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WSL2-Linux-Kernel
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Merge branch 'hw-breakpoint' of git://repo.or.cz/linux-2.6/linux-wd into devel-stable

This commit is contained in:
Russell King 2010-12-18 14:27:55 +00:00
Родитель 961ec6daa7 8fbf397c33
Коммит 2f841ed13b
163 изменённых файлов: 2273 добавлений и 1081 удалений
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8
Documentation/edac.txt
Просмотреть файл

@ -196,7 +196,7 @@ csrow3.
The representation of the above is reflected in the directory tree
in EDAC's sysfs interface. Starting in directory
/sys/devices/system/edac/mc each memory controller will be represented
by its own 'mcX' directory, where 'X" is the index of the MC.
by its own 'mcX' directory, where 'X' is the index of the MC.
..../edac/mc/
@ -207,7 +207,7 @@ by its own 'mcX' directory, where 'X" is the index of the MC.
....
Under each 'mcX' directory each 'csrowX' is again represented by a
'csrowX', where 'X" is the csrow index:
'csrowX', where 'X' is the csrow index:
.../mc/mc0/
@ -232,7 +232,7 @@ EDAC control and attribute files.
In 'mcX' directories are EDAC control and attribute files for
this 'X" instance of the memory controllers:
this 'X' instance of the memory controllers:
Counter reset control file:
@ -343,7 +343,7 @@ Sdram memory scrubbing rate:
'csrowX' DIRECTORIES
In the 'csrowX' directories are EDAC control and attribute files for
this 'X" instance of csrow:
this 'X' instance of csrow:
Total Uncorrectable Errors count attribute file:

1
Documentation/networking/ip-sysctl.txt
Просмотреть файл

@ -144,6 +144,7 @@ tcp_adv_win_scale - INTEGER
Count buffering overhead as bytes/2^tcp_adv_win_scale
(if tcp_adv_win_scale > 0) or bytes-bytes/2^(-tcp_adv_win_scale),
if it is <= 0.
Possible values are [-31, 31], inclusive.
Default: 2
tcp_allowed_congestion_control - STRING

2
Makefile
Просмотреть файл

@ -1,7 +1,7 @@
VERSION = 2
PATCHLEVEL = 6
SUBLEVEL = 37
EXTRAVERSION = -rc3
EXTRAVERSION = -rc4
NAME = Flesh-Eating Bats with Fangs
# *DOCUMENTATION*

4
arch/arm/include/asm/hw_breakpoint.h
Просмотреть файл

@ -20,8 +20,8 @@ struct arch_hw_breakpoint_ctrl {
struct arch_hw_breakpoint {
u32 address;
u32 trigger;
struct perf_event *suspended_wp;
struct arch_hw_breakpoint_ctrl ctrl;
struct arch_hw_breakpoint_ctrl step_ctrl;
struct arch_hw_breakpoint_ctrl ctrl;
};
static inline u32 encode_ctrl_reg(struct arch_hw_breakpoint_ctrl ctrl)

4
arch/arm/kernel/entry-armv.S
Просмотреть файл

@ -198,6 +198,7 @@ __dabt_svc:
@
@ set desired IRQ state, then call main handler
@
debug_entry r1
msr cpsr_c, r9
mov r2, sp
bl do_DataAbort
@ -324,6 +325,7 @@ __pabt_svc:
#else
bl CPU_PABORT_HANDLER
#endif
debug_entry r1
msr cpsr_c, r9 @ Maybe enable interrupts
mov r2, sp @ regs
bl do_PrefetchAbort @ call abort handler
@ -439,6 +441,7 @@ __dabt_usr:
@
@ IRQs on, then call the main handler
@
debug_entry r1
enable_irq
mov r2, sp
adr lr, BSYM(ret_from_exception)
@ -703,6 +706,7 @@ __pabt_usr:
#else
bl CPU_PABORT_HANDLER
#endif
debug_entry r1
enable_irq @ Enable interrupts
mov r2, sp @ regs
bl do_PrefetchAbort @ call abort handler

19
arch/arm/kernel/entry-header.S
Просмотреть файл

@ -165,6 +165,25 @@
.endm
#endif /* !CONFIG_THUMB2_KERNEL */
@
@ Debug exceptions are taken as prefetch or data aborts.
@ We must disable preemption during the handler so that
@ we can access the debug registers safely.
@
.macro debug_entry, fsr
#if defined(CONFIG_HAVE_HW_BREAKPOINT) && defined(CONFIG_PREEMPT)
ldr r4, =0x40f @ mask out fsr.fs
and r5, r4, \fsr
cmp r5, #2 @ debug exception
bne 1f
get_thread_info r10
ldr r6, [r10, #TI_PREEMPT] @ get preempt count
add r11, r6, #1 @ increment it
str r11, [r10, #TI_PREEMPT]
1:
#endif
.endm
/*
* These are the registers used in the syscall handler, and allow us to
* have in theory up to 7 arguments to a function - r0 to r6.

543
arch/arm/kernel/hw_breakpoint.c
Просмотреть файл

@ -24,6 +24,7 @@
#define pr_fmt(fmt) "hw-breakpoint: " fmt
#include <linux/errno.h>
#include <linux/hardirq.h>
#include <linux/perf_event.h>
#include <linux/hw_breakpoint.h>
#include <linux/smp.h>
@ -44,6 +45,7 @@ static DEFINE_PER_CPU(struct perf_event *, wp_on_reg[ARM_MAX_WRP]);
/* Number of BRP/WRP registers on this CPU. */
static int core_num_brps;
static int core_num_reserved_brps;
static int core_num_wrps;
/* Debug architecture version. */
@ -52,87 +54,6 @@ static u8 debug_arch;
/* Maximum supported watchpoint length. */
static u8 max_watchpoint_len;
/* Determine number of BRP registers available. */
static int get_num_brps(void)
{
u32 didr;
ARM_DBG_READ(c0, 0, didr);
return ((didr >> 24) & 0xf) + 1;
}
/* Determine number of WRP registers available. */
static int get_num_wrps(void)
{
/*
* FIXME: When a watchpoint fires, the only way to work out which
* watchpoint it was is by disassembling the faulting instruction
* and working out the address of the memory access.
*
* Furthermore, we can only do this if the watchpoint was precise
* since imprecise watchpoints prevent us from calculating register
* based addresses.
*
* For the time being, we only report 1 watchpoint register so we
* always know which watchpoint fired. In the future we can either
* add a disassembler and address generation emulator, or we can
* insert a check to see if the DFAR is set on watchpoint exception
* entry [the ARM ARM states that the DFAR is UNKNOWN, but
* experience shows that it is set on some implementations].
*/
#if 0
u32 didr, wrps;
ARM_DBG_READ(c0, 0, didr);
return ((didr >> 28) & 0xf) + 1;
#endif
return 1;
}
int hw_breakpoint_slots(int type)
{
/*
* We can be called early, so don't rely on
* our static variables being initialised.
*/
switch (type) {
case TYPE_INST:
return get_num_brps();
case TYPE_DATA:
return get_num_wrps();
default:
pr_warning("unknown slot type: %d\n", type);
return 0;
}
}
/* Determine debug architecture. */
static u8 get_debug_arch(void)
{
u32 didr;
/* Do we implement the extended CPUID interface? */
if (((read_cpuid_id() >> 16) & 0xf) != 0xf) {
pr_warning("CPUID feature registers not supported. "
"Assuming v6 debug is present.\n");
return ARM_DEBUG_ARCH_V6;
}
ARM_DBG_READ(c0, 0, didr);
return (didr >> 16) & 0xf;
}
/* Does this core support mismatch breakpoints? */
static int core_has_mismatch_bps(void)
{
return debug_arch >= ARM_DEBUG_ARCH_V7_ECP14 && core_num_brps > 1;
}
u8 arch_get_debug_arch(void)
{
return debug_arch;
}
#define READ_WB_REG_CASE(OP2, M, VAL) \
case ((OP2 << 4) + M): \
ARM_DBG_READ(c ## M, OP2, VAL); \
@ -210,6 +131,94 @@ static void write_wb_reg(int n, u32 val)
isb();
}
/* Determine debug architecture. */
static u8 get_debug_arch(void)
{
u32 didr;
/* Do we implement the extended CPUID interface? */
if (((read_cpuid_id() >> 16) & 0xf) != 0xf) {
pr_warning("CPUID feature registers not supported. "
"Assuming v6 debug is present.\n");
return ARM_DEBUG_ARCH_V6;
}
ARM_DBG_READ(c0, 0, didr);
return (didr >> 16) & 0xf;
}
u8 arch_get_debug_arch(void)
{
return debug_arch;
}
/* Determine number of BRP register available. */
static int get_num_brp_resources(void)
{
u32 didr;
ARM_DBG_READ(c0, 0, didr);
return ((didr >> 24) & 0xf) + 1;
}
/* Does this core support mismatch breakpoints? */
static int core_has_mismatch_brps(void)
{
return (get_debug_arch() >= ARM_DEBUG_ARCH_V7_ECP14 &&
get_num_brp_resources() > 1);
}
/* Determine number of usable WRPs available. */
static int get_num_wrps(void)
{
/*
* FIXME: When a watchpoint fires, the only way to work out which
* watchpoint it was is by disassembling the faulting instruction
* and working out the address of the memory access.
*
* Furthermore, we can only do this if the watchpoint was precise
* since imprecise watchpoints prevent us from calculating register
* based addresses.
*
* Providing we have more than 1 breakpoint register, we only report
* a single watchpoint register for the time being. This way, we always
* know which watchpoint fired. In the future we can either add a
* disassembler and address generation emulator, or we can insert a
* check to see if the DFAR is set on watchpoint exception entry
* [the ARM ARM states that the DFAR is UNKNOWN, but experience shows
* that it is set on some implementations].
*/
#if 0
int wrps;
u32 didr;
ARM_DBG_READ(c0, 0, didr);
wrps = ((didr >> 28) & 0xf) + 1;
#endif
int wrps = 1;
if (core_has_mismatch_brps() && wrps >= get_num_brp_resources())
wrps = get_num_brp_resources() - 1;
return wrps;
}
/* We reserve one breakpoint for each watchpoint. */
static int get_num_reserved_brps(void)
{
if (core_has_mismatch_brps())
return get_num_wrps();
return 0;
}
/* Determine number of usable BRPs available. */
static int get_num_brps(void)
{
int brps = get_num_brp_resources();
if (core_has_mismatch_brps())
brps -= get_num_reserved_brps();
return brps;
}
/*
* In order to access the breakpoint/watchpoint control registers,
* we must be running in debug monitor mode. Unfortunately, we can
@ -230,8 +239,12 @@ static int enable_monitor_mode(void)
goto out;
}
/* If monitor mode is already enabled, just return. */
if (dscr & ARM_DSCR_MDBGEN)
goto out;
/* Write to the corresponding DSCR. */
switch (debug_arch) {
switch (get_debug_arch()) {
case ARM_DEBUG_ARCH_V6:
case ARM_DEBUG_ARCH_V6_1:
ARM_DBG_WRITE(c1, 0, (dscr | ARM_DSCR_MDBGEN));
@ -246,15 +259,30 @@ static int enable_monitor_mode(void)
/* Check that the write made it through. */
ARM_DBG_READ(c1, 0, dscr);
if (WARN_ONCE(!(dscr & ARM_DSCR_MDBGEN),
"failed to enable monitor mode.")) {
if (!(dscr & ARM_DSCR_MDBGEN))
ret = -EPERM;
}
out:
return ret;
}
int hw_breakpoint_slots(int type)
{
/*
* We can be called early, so don't rely on
* our static variables being initialised.
*/
switch (type) {
case TYPE_INST:
return get_num_brps();
case TYPE_DATA:
return get_num_wrps();
default:
pr_warning("unknown slot type: %d\n", type);
return 0;
}
}
/*
* Check if 8-bit byte-address select is available.
* This clobbers WRP 0.
@ -268,9 +296,6 @@ static u8 get_max_wp_len(void)
if (debug_arch < ARM_DEBUG_ARCH_V7_ECP14)
goto out;
if (enable_monitor_mode())
goto out;
memset(&ctrl, 0, sizeof(ctrl));
ctrl.len = ARM_BREAKPOINT_LEN_8;
ctrl_reg = encode_ctrl_reg(ctrl);
@ -289,23 +314,6 @@ u8 arch_get_max_wp_len(void)
return max_watchpoint_len;
}
/*
* Handler for reactivating a suspended watchpoint when the single
* step `mismatch' breakpoint is triggered.
*/
static void wp_single_step_handler(struct perf_event *bp, int unused,
struct perf_sample_data *data,
struct pt_regs *regs)
{
perf_event_enable(counter_arch_bp(bp)->suspended_wp);
unregister_hw_breakpoint(bp);
}
static int bp_is_single_step(struct perf_event *bp)
{
return bp->overflow_handler == wp_single_step_handler;
}
/*
* Install a perf counter breakpoint.
*/
@ -314,30 +322,41 @@ int arch_install_hw_breakpoint(struct perf_event *bp)
struct arch_hw_breakpoint *info = counter_arch_bp(bp);
struct perf_event **slot, **slots;
int i, max_slots, ctrl_base, val_base, ret = 0;
u32 addr, ctrl;
/* Ensure that we are in monitor mode and halting mode is disabled. */
ret = enable_monitor_mode();
if (ret)
goto out;
addr = info->address;
ctrl = encode_ctrl_reg(info->ctrl) | 0x1;
if (info->ctrl.type == ARM_BREAKPOINT_EXECUTE) {
/* Breakpoint */
ctrl_base = ARM_BASE_BCR;
val_base = ARM_BASE_BVR;
slots = __get_cpu_var(bp_on_reg);
max_slots = core_num_brps - 1;
if (bp_is_single_step(bp)) {
info->ctrl.mismatch = 1;
i = max_slots;
slots[i] = bp;
goto setup;
slots = (struct perf_event **)__get_cpu_var(bp_on_reg);
max_slots = core_num_brps;
if (info->step_ctrl.enabled) {
/* Override the breakpoint data with the step data. */
addr = info->trigger & ~0x3;
ctrl = encode_ctrl_reg(info->step_ctrl);
}
} else {
/* Watchpoint */
ctrl_base = ARM_BASE_WCR;
val_base = ARM_BASE_WVR;
slots = __get_cpu_var(wp_on_reg);
if (info->step_ctrl.enabled) {
/* Install into the reserved breakpoint region. */
ctrl_base = ARM_BASE_BCR + core_num_brps;
val_base = ARM_BASE_BVR + core_num_brps;
/* Override the watchpoint data with the step data. */
addr = info->trigger & ~0x3;
ctrl = encode_ctrl_reg(info->step_ctrl);
} else {
ctrl_base = ARM_BASE_WCR;
val_base = ARM_BASE_WVR;
}
slots = (struct perf_event **)__get_cpu_var(wp_on_reg);
max_slots = core_num_wrps;
}
@ -355,12 +374,11 @@ int arch_install_hw_breakpoint(struct perf_event *bp)
goto out;
}
setup:
/* Setup the address register. */
write_wb_reg(val_base + i, info->address);
write_wb_reg(val_base + i, addr);
/* Setup the control register. */
write_wb_reg(ctrl_base + i, encode_ctrl_reg(info->ctrl) | 0x1);
write_wb_reg(ctrl_base + i, ctrl);
out:
return ret;
@ -375,18 +393,15 @@ void arch_uninstall_hw_breakpoint(struct perf_event *bp)
if (info->ctrl.type == ARM_BREAKPOINT_EXECUTE) {
/* Breakpoint */
base = ARM_BASE_BCR;
slots = __get_cpu_var(bp_on_reg);
max_slots = core_num_brps - 1;
if (bp_is_single_step(bp)) {
i = max_slots;
slots[i] = NULL;
goto reset;
}
slots = (struct perf_event **)__get_cpu_var(bp_on_reg);
max_slots = core_num_brps;
} else {
/* Watchpoint */
base = ARM_BASE_WCR;
slots = __get_cpu_var(wp_on_reg);
if (info->step_ctrl.enabled)
base = ARM_BASE_BCR + core_num_brps;
else
base = ARM_BASE_WCR;
slots = (struct perf_event **)__get_cpu_var(wp_on_reg);
max_slots = core_num_wrps;
}
@ -403,7 +418,6 @@ void arch_uninstall_hw_breakpoint(struct perf_event *bp)
if (WARN_ONCE(i == max_slots, "Can't find any breakpoint slot"))
return;
reset:
/* Reset the control register. */
write_wb_reg(base + i, 0);
}
@ -537,12 +551,23 @@ static int arch_build_bp_info(struct perf_event *bp)
return -EINVAL;
}
/*
* Breakpoints must be of length 2 (thumb) or 4 (ARM) bytes.
* Watchpoints can be of length 1, 2, 4 or 8 bytes if supported
* by the hardware and must be aligned to the appropriate number of
* bytes.
*/
if (info->ctrl.type == ARM_BREAKPOINT_EXECUTE &&
info->ctrl.len != ARM_BREAKPOINT_LEN_2 &&
info->ctrl.len != ARM_BREAKPOINT_LEN_4)
return -EINVAL;
/* Address */
info->address = bp->attr.bp_addr;
/* Privilege */
info->ctrl.privilege = ARM_BREAKPOINT_USER;
if (arch_check_bp_in_kernelspace(bp) && !bp_is_single_step(bp))
if (arch_check_bp_in_kernelspace(bp))
info->ctrl.privilege |= ARM_BREAKPOINT_PRIV;
/* Enabled? */
@ -561,7 +586,7 @@ int arch_validate_hwbkpt_settings(struct perf_event *bp)
{
struct arch_hw_breakpoint *info = counter_arch_bp(bp);
int ret = 0;
u32 bytelen, max_len, offset, alignment_mask = 0x3;
u32 offset, alignment_mask = 0x3;
/* Build the arch_hw_breakpoint. */
ret = arch_build_bp_info(bp);
@ -571,84 +596,85 @@ int arch_validate_hwbkpt_settings(struct perf_event *bp)
/* Check address alignment. */
if (info->ctrl.len == ARM_BREAKPOINT_LEN_8)
alignment_mask = 0x7;
if (info->address & alignment_mask) {
/*
* Try to fix the alignment. This may result in a length
* that is too large, so we must check for that.
*/
bytelen = get_hbp_len(info->ctrl.len);
max_len = info->ctrl.type == ARM_BREAKPOINT_EXECUTE ? 4 :
max_watchpoint_len;
if (max_len >= 8)
offset = info->address & 0x7;
else
offset = info->address & 0x3;
if (bytelen > (1 << ((max_len - (offset + 1)) >> 1))) {
ret = -EFBIG;
goto out;
}
info->ctrl.len <<= offset;
info->address &= ~offset;
pr_debug("breakpoint alignment fixup: length = 0x%x, "
"address = 0x%x\n", info->ctrl.len, info->address);
offset = info->address & alignment_mask;
switch (offset) {
case 0:
/* Aligned */
break;
case 1:
/* Allow single byte watchpoint. */
if (info->ctrl.len == ARM_BREAKPOINT_LEN_1)
break;
case 2:
/* Allow halfword watchpoints and breakpoints. */
if (info->ctrl.len == ARM_BREAKPOINT_LEN_2)
break;
default:
ret = -EINVAL;
goto out;
}
info->address &= ~alignment_mask;
info->ctrl.len <<= offset;
/*
* Currently we rely on an overflow handler to take
* care of single-stepping the breakpoint when it fires.
* In the case of userspace breakpoints on a core with V7 debug,
* we can use the mismatch feature as a poor-man's hardware single-step.
* we can use the mismatch feature as a poor-man's hardware
* single-step, but this only works for per-task breakpoints.
*/
if (WARN_ONCE(!bp->overflow_handler &&
(arch_check_bp_in_kernelspace(bp) || !core_has_mismatch_bps()),
(arch_check_bp_in_kernelspace(bp) || !core_has_mismatch_brps()
|| !bp->hw.bp_target),
"overflow handler required but none found")) {
ret = -EINVAL;
goto out;
}
out:
return ret;
}
static void update_mismatch_flag(int idx, int flag)
/*
* Enable/disable single-stepping over the breakpoint bp at address addr.
*/
static void enable_single_step(struct perf_event *bp, u32 addr)
{
struct perf_event *bp = __get_cpu_var(bp_on_reg[idx]);
struct arch_hw_breakpoint *info;
struct arch_hw_breakpoint *info = counter_arch_bp(bp);
if (bp == NULL)
return;
arch_uninstall_hw_breakpoint(bp);
info->step_ctrl.mismatch = 1;
info->step_ctrl.len = ARM_BREAKPOINT_LEN_4;
info->step_ctrl.type = ARM_BREAKPOINT_EXECUTE;
info->step_ctrl.privilege = info->ctrl.privilege;
info->step_ctrl.enabled = 1;
info->trigger = addr;
arch_install_hw_breakpoint(bp);
}
info = counter_arch_bp(bp);
/* Update the mismatch field to enter/exit `single-step' mode */
if (!bp->overflow_handler && info->ctrl.mismatch != flag) {
info->ctrl.mismatch = flag;
write_wb_reg(ARM_BASE_BCR + idx, encode_ctrl_reg(info->ctrl) | 0x1);
}
static void disable_single_step(struct perf_event *bp)
{
arch_uninstall_hw_breakpoint(bp);
counter_arch_bp(bp)->step_ctrl.enabled = 0;
arch_install_hw_breakpoint(bp);
}
static void watchpoint_handler(unsigned long unknown, struct pt_regs *regs)
{
int i;
struct perf_event *bp, **slots = __get_cpu_var(wp_on_reg);
struct perf_event *wp, **slots;
struct arch_hw_breakpoint *info;
struct perf_event_attr attr;
slots = (struct perf_event **)__get_cpu_var(wp_on_reg);
/* Without a disassembler, we can only handle 1 watchpoint. */
BUG_ON(core_num_wrps > 1);
hw_breakpoint_init(&attr);
attr.bp_addr = regs->ARM_pc & ~0x3;
attr.bp_len = HW_BREAKPOINT_LEN_4;
attr.bp_type = HW_BREAKPOINT_X;
for (i = 0; i < core_num_wrps; ++i) {
rcu_read_lock();
if (slots[i] == NULL) {
wp = slots[i];
if (wp == NULL) {
rcu_read_unlock();
continue;
}
@ -658,87 +684,121 @@ static void watchpoint_handler(unsigned long unknown, struct pt_regs *regs)
* single watchpoint, we can set the trigger to the lowest
* possible faulting address.
*/
info = counter_arch_bp(slots[i]);
info->trigger = slots[i]->attr.bp_addr;
info = counter_arch_bp(wp);
info->trigger = wp->attr.bp_addr;
pr_debug("watchpoint fired: address = 0x%x\n", info->trigger);
perf_bp_event(slots[i], regs);
perf_bp_event(wp, regs);
/*
* If no overflow handler is present, insert a temporary
* mismatch breakpoint so we can single-step over the
* watchpoint trigger.
*/
if (!slots[i]->overflow_handler) {
bp = register_user_hw_breakpoint(&attr,
wp_single_step_handler,
current);
counter_arch_bp(bp)->suspended_wp = slots[i];
perf_event_disable(slots[i]);
}
if (!wp->overflow_handler)
enable_single_step(wp, instruction_pointer(regs));
rcu_read_unlock();
}
}
static void watchpoint_single_step_handler(unsigned long pc)
{
int i;
struct perf_event *wp, **slots;
struct arch_hw_breakpoint *info;
slots = (struct perf_event **)__get_cpu_var(wp_on_reg);
for (i = 0; i < core_num_reserved_brps; ++i) {
rcu_read_lock();
wp = slots[i];
if (wp == NULL)
goto unlock;
info = counter_arch_bp(wp);
if (!info->step_ctrl.enabled)
goto unlock;
/*
* Restore the original watchpoint if we've completed the
* single-step.
*/
if (info->trigger != pc)
disable_single_step(wp);
unlock:
rcu_read_unlock();
}
}
static void breakpoint_handler(unsigned long unknown, struct pt_regs *regs)
{
int i;
int mismatch;
u32 ctrl_reg, val, addr;
struct perf_event *bp, **slots = __get_cpu_var(bp_on_reg);
struct perf_event *bp, **slots;
struct arch_hw_breakpoint *info;
struct arch_hw_breakpoint_ctrl ctrl;
slots = (struct perf_event **)__get_cpu_var(bp_on_reg);
/* The exception entry code places the amended lr in the PC. */
addr = regs->ARM_pc;
/* Check the currently installed breakpoints first. */
for (i = 0; i < core_num_brps; ++i) {
rcu_read_lock();
bp = slots[i];
if (bp == NULL) {
rcu_read_unlock();
continue;
}
if (bp == NULL)
goto unlock;
mismatch = 0;
info = counter_arch_bp(bp);
/* Check if the breakpoint value matches. */
val = read_wb_reg(ARM_BASE_BVR + i);
if (val != (addr & ~0x3))
goto unlock;
goto mismatch;
/* Possible match, check the byte address select to confirm. */
ctrl_reg = read_wb_reg(ARM_BASE_BCR + i);
decode_ctrl_reg(ctrl_reg, &ctrl);
if ((1 << (addr & 0x3)) & ctrl.len) {
mismatch = 1;
info = counter_arch_bp(bp);
info->trigger = addr;
}
unlock:
if ((mismatch && !info->ctrl.mismatch) || bp_is_single_step(bp)) {
pr_debug("breakpoint fired: address = 0x%x\n", addr);
perf_bp_event(bp, regs);
if (!bp->overflow_handler)
enable_single_step(bp, addr);
goto unlock;
}
update_mismatch_flag(i, mismatch);
mismatch:
/* If we're stepping a breakpoint, it can now be restored. */
if (info->step_ctrl.enabled)
disable_single_step(bp);
unlock:
rcu_read_unlock();
}
/* Handle any pending watchpoint single-step breakpoints. */
watchpoint_single_step_handler(addr);
}
/*
* Called from either the Data Abort Handler [watchpoint] or the
* Prefetch Abort Handler [breakpoint].
* Prefetch Abort Handler [breakpoint] with preemption disabled.
*/
static int hw_breakpoint_pending(unsigned long addr, unsigned int fsr,
struct pt_regs *regs)
{
int ret = 1; /* Unhandled fault. */
int ret = 0;
u32 dscr;
/* We must be called with preemption disabled. */
WARN_ON(preemptible());
/* We only handle watchpoints and hardware breakpoints. */
ARM_DBG_READ(c1, 0, dscr);
@ -753,25 +813,47 @@ static int hw_breakpoint_pending(unsigned long addr, unsigned int fsr,
watchpoint_handler(addr, regs);
break;
default:
goto out;
ret = 1; /* Unhandled fault. */
}
ret = 0;
out:
/*
* Re-enable preemption after it was disabled in the
* low-level exception handling code.
*/
preempt_enable();
return ret;
}
/*
* One-time initialisation.
*/
static void __init reset_ctrl_regs(void *unused)
static void reset_ctrl_regs(void *unused)
{
int i;
/*
* v7 debug contains save and restore registers so that debug state
* can be maintained across low-power modes without leaving
* the debug logic powered up. It is IMPLEMENTATION DEFINED whether
* we can write to the debug registers out of reset, so we must
* unlock the OS Lock Access Register to avoid taking undefined
* instruction exceptions later on.
*/
if (debug_arch >= ARM_DEBUG_ARCH_V7_ECP14) {
/*
* Unconditionally clear the lock by writing a value
* other than 0xC5ACCE55 to the access register.
*/
asm volatile("mcr p14, 0, %0, c1, c0, 4" : : "r" (0));
isb();
}
if (enable_monitor_mode())
return;
for (i = 0; i < core_num_brps; ++i) {
/* We must also reset any reserved registers. */
for (i = 0; i < core_num_brps + core_num_reserved_brps; ++i) {
write_wb_reg(ARM_BASE_BCR + i, 0UL);
write_wb_reg(ARM_BASE_BVR + i, 0UL);
}
@ -782,45 +864,57 @@ static void __init reset_ctrl_regs(void *unused)
}
}
static int __cpuinit dbg_reset_notify(struct notifier_block *self,
unsigned long action, void *cpu)
{
if (action == CPU_ONLINE)
smp_call_function_single((int)cpu, reset_ctrl_regs, NULL, 1);
return NOTIFY_OK;
}
static struct notifier_block __cpuinitdata dbg_reset_nb = {
.notifier_call = dbg_reset_notify,
};
static int __init arch_hw_breakpoint_init(void)
{
int ret = 0;
u32 dscr;
debug_arch = get_debug_arch();
if (debug_arch > ARM_DEBUG_ARCH_V7_ECP14) {
pr_info("debug architecture 0x%x unsupported.\n", debug_arch);
ret = -ENODEV;
goto out;
return 0;
}
/* Determine how many BRPs/WRPs are available. */
core_num_brps = get_num_brps();
core_num_reserved_brps = get_num_reserved_brps();
core_num_wrps = get_num_wrps();
pr_info("found %d breakpoint and %d watchpoint registers.\n",
core_num_brps, core_num_wrps);
core_num_brps + core_num_reserved_brps, core_num_wrps);
if (core_has_mismatch_bps())
pr_info("1 breakpoint reserved for watchpoint single-step.\n");
if (core_num_reserved_brps)
pr_info("%d breakpoint(s) reserved for watchpoint "
"single-step.\n", core_num_reserved_brps);
ARM_DBG_READ(c1, 0, dscr);
if (dscr & ARM_DSCR_HDBGEN) {
pr_warning("halting debug mode enabled. Assuming maximum "
"watchpoint size of 4 bytes.");
} else {
/* Work out the maximum supported watchpoint length. */
max_watchpoint_len = get_max_wp_len();
pr_info("maximum watchpoint size is %u bytes.\n",
max_watchpoint_len);
/*
* Reset the breakpoint resources. We assume that a halting
* debugger will leave the world in a nice state for us.
*/
smp_call_function(reset_ctrl_regs, NULL, 1);
reset_ctrl_regs(NULL);
/* Work out the maximum supported watchpoint length. */
max_watchpoint_len = get_max_wp_len();
pr_info("maximum watchpoint size is %u bytes.\n",
max_watchpoint_len);
}
/* Register debug fault handler. */
@ -829,8 +923,9 @@ static int __init arch_hw_breakpoint_init(void)
hook_ifault_code(2, hw_breakpoint_pending, SIGTRAP, TRAP_HWBKPT,
"breakpoint debug exception");
out:
return ret;
/* Register hotplug notifier. */
register_cpu_notifier(&dbg_reset_nb);
return 0;
}
arch_initcall(arch_hw_breakpoint_init);

4
arch/arm/kernel/ptrace.c
Просмотреть файл

@ -1060,8 +1060,8 @@ static int ptrace_sethbpregs(struct task_struct *tsk, long num,
goto out;
if ((gen_type & implied_type) != gen_type) {
ret = -EINVAL;
goto out;
ret = -EINVAL;
goto out;
}
attr.bp_len = gen_len;

7
arch/arm/mach-omap2/pm24xx.c
Просмотреть файл

@ -30,6 +30,7 @@
#include <linux/irq.h>
#include <linux/time.h>
#include <linux/gpio.h>
#include <linux/console.h>
#include <asm/mach/time.h>
#include <asm/mach/irq.h>
@ -118,6 +119,10 @@ static void omap2_enter_full_retention(void)
if (omap_irq_pending())
goto no_sleep;
/* Block console output in case it is on one of the OMAP UARTs */
if (try_acquire_console_sem())
goto no_sleep;
omap_uart_prepare_idle(0);
omap_uart_prepare_idle(1);
omap_uart_prepare_idle(2);
@ -131,6 +136,8 @@ static void omap2_enter_full_retention(void)
omap_uart_resume_idle(1);
omap_uart_resume_idle(0);
release_console_sem();
no_sleep:
if (omap2_pm_debug) {
unsigned long long tmp;

10
arch/arm/mach-omap2/pm34xx.c
Просмотреть файл

@ -28,6 +28,7 @@
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/console.h>
#include <plat/sram.h>
#include <plat/clockdomain.h>
@ -385,6 +386,12 @@ void omap_sram_idle(void)
omap3_enable_io_chain();
}
/* Block console output in case it is on one of the OMAP UARTs */
if (per_next_state < PWRDM_POWER_ON ||
core_next_state < PWRDM_POWER_ON)
if (try_acquire_console_sem())
goto console_still_active;
/* PER */
if (per_next_state < PWRDM_POWER_ON) {
omap_uart_prepare_idle(2);
@ -463,6 +470,9 @@ void omap_sram_idle(void)
omap_uart_resume_idle(3);
}
release_console_sem();
console_still_active:
/* Disable IO-PAD and IO-CHAIN wakeup */
if (omap3_has_io_wakeup() &&
(per_next_state < PWRDM_POWER_ON ||

7
arch/arm/mach-omap2/serial.c
Просмотреть файл

@ -27,6 +27,7 @@
#include <linux/slab.h>
#include <linux/serial_8250.h>
#include <linux/pm_runtime.h>
#include <linux/console.h>
#ifdef CONFIG_SERIAL_OMAP
#include <plat/omap-serial.h>
@ -406,7 +407,7 @@ void omap_uart_resume_idle(int num)
struct omap_uart_state *uart;
list_for_each_entry(uart, &uart_list, node) {
if (num == uart->num) {
if (num == uart->num && uart->can_sleep) {
omap_uart_enable_clocks(uart);
/* Check for IO pad wakeup */
@ -807,6 +808,8 @@ void __init omap_serial_init_port(int port)
oh->dev_attr = uart;
acquire_console_sem(); /* in case the earlycon is on the UART */
/*
* Because of early UART probing, UART did not get idled
* on init. Now that omap_device is ready, ensure full idle
@ -831,6 +834,8 @@ void __init omap_serial_init_port(int port)
omap_uart_block_sleep(uart);
uart->timeout = DEFAULT_TIMEOUT;
release_console_sem();
if ((cpu_is_omap34xx() && uart->padconf) ||
(uart->wk_en && uart->wk_mask)) {
device_init_wakeup(&od->pdev.dev, true);

8
arch/arm/mach-s3c2410/h1940-bluetooth.c
Просмотреть файл

@ -77,13 +77,13 @@ static int __devinit h1940bt_probe(struct platform_device *pdev)
/* Configures BT serial port GPIOs */
s3c_gpio_cfgpin(S3C2410_GPH(0), S3C2410_GPH0_nCTS0);
s3c_gpio_cfgpull(S3C2410_GPH(0), S3C_GPIO_PULL_NONE);
s3c_gpio_setpull(S3C2410_GPH(0), S3C_GPIO_PULL_NONE);
s3c_gpio_cfgpin(S3C2410_GPH(1), S3C2410_GPIO_OUTPUT);
s3c_gpio_cfgpull(S3C2410_GPH(1), S3C_GPIO_PULL_NONE);
s3c_gpio_setpull(S3C2410_GPH(1), S3C_GPIO_PULL_NONE);
s3c_gpio_cfgpin(S3C2410_GPH(2), S3C2410_GPH2_TXD0);
s3c_gpio_cfgpull(S3C2410_GPH(2), S3C_GPIO_PULL_NONE);
s3c_gpio_setpull(S3C2410_GPH(2), S3C_GPIO_PULL_NONE);
s3c_gpio_cfgpin(S3C2410_GPH(3), S3C2410_GPH3_RXD0);
s3c_gpio_cfgpull(S3C2410_GPH(3), S3C_GPIO_PULL_NONE);
s3c_gpio_setpull(S3C2410_GPH(3), S3C_GPIO_PULL_NONE);
rfk = rfkill_alloc(DRV_NAME, &pdev->dev, RFKILL_TYPE_BLUETOOTH,

5
arch/arm/mach-s3c2416/irq.c
Просмотреть файл

@ -168,12 +168,11 @@ static struct irq_chip s3c2416_irq_dma = {
static void s3c2416_irq_demux_uart3(unsigned int irq, struct irq_desc *desc)
{
s3c2416_irq_demux(IRQ_S3C2443_UART3, 3);
s3c2416_irq_demux(IRQ_S3C2443_RX3, 3);
}
#define INTMSK_UART3 (1UL << (IRQ_S3C2443_UART3 - IRQ_EINT0))
#define SUBMSK_UART3 (0xf << (IRQ_S3C2443_RX3 - S3C2410_IRQSUB(0)))
#define SUBMSK_UART3 (0x7 << (IRQ_S3C2443_RX3 - S3C2410_IRQSUB(0)))
static void s3c2416_irq_uart3_mask(unsigned int irqno)
{

5
arch/arm/mach-s3c2443/irq.c
Просмотреть файл

@ -166,12 +166,11 @@ static struct irq_chip s3c2443_irq_dma = {
static void s3c2443_irq_demux_uart3(unsigned int irq, struct irq_desc *desc)
{
s3c2443_irq_demux(IRQ_S3C2443_UART3, 3);
s3c2443_irq_demux(IRQ_S3C2443_RX3, 3);
}
#define INTMSK_UART3 (1UL << (IRQ_S3C2443_UART3 - IRQ_EINT0))
#define SUBMSK_UART3 (0xf << (IRQ_S3C2443_RX3 - S3C2410_IRQSUB(0)))
#define SUBMSK_UART3 (0x7 << (IRQ_S3C2443_RX3 - S3C2410_IRQSUB(0)))
static void s3c2443_irq_uart3_mask(unsigned int irqno)
{

2
arch/arm/mach-s3c64xx/mach-mini6410.c
Просмотреть файл

@ -45,7 +45,7 @@
#include <video/platform_lcd.h>
#define UCON (S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK)
#define UCON S3C2410_UCON_DEFAULT
#define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB)
#define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)

2
arch/arm/mach-s3c64xx/mach-real6410.c
Просмотреть файл

@ -46,7 +46,7 @@
#include <video/platform_lcd.h>
#define UCON (S3C2410_UCON_DEFAULT | S3C2410_UCON_UCLK)
#define UCON S3C2410_UCON_DEFAULT
#define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB)
#define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)

1
arch/arm/mach-s5pv210/mach-smdkc110.c
Просмотреть файл

@ -13,6 +13,7 @@
#include <linux/init.h>
#include <linux/serial_core.h>
#include <linux/i2c.h>
#include <linux/sysdev.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>

1
arch/arm/mach-s5pv210/mach-smdkv210.c
Просмотреть файл

@ -13,6 +13,7 @@
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/serial_core.h>
#include <linux/sysdev.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>

147
arch/arm/mach-shmobile/board-ap4evb.c
Просмотреть файл

@ -567,38 +567,127 @@ static struct platform_device *qhd_devices[] __initdata = {
/* FSI */
#define IRQ_FSI evt2irq(0x1840)
static int __fsi_set_rate(struct clk *clk, long rate, int enable)
{
int ret = 0;
static int fsi_set_rate(int is_porta, int rate)
if (rate <= 0)
return ret;
if (enable) {
ret = clk_set_rate(clk, rate);
if (0 == ret)
ret = clk_enable(clk);
} else {
clk_disable(clk);
}
return ret;
}
static int __fsi_set_round_rate(struct clk *clk, long rate, int enable)
{
return __fsi_set_rate(clk, clk_round_rate(clk, rate), enable);
}
static int fsi_ak4642_set_rate(struct device *dev, int rate, int enable)
{
struct clk *fsia_ick;
struct clk *fsiack;
int ret = -EIO;
fsia_ick = clk_get(dev, "icka");
if (IS_ERR(fsia_ick))
return PTR_ERR(fsia_ick);
/*
* FSIACK is connected to AK4642,
* and use external clock pin from it.
* it is parent of fsia_ick now.
*/
fsiack = clk_get_parent(fsia_ick);
if (!fsiack)
goto fsia_ick_out;
/*
* we get 1/1 divided clock by setting same rate to fsiack and fsia_ick
*
** FIXME **
* Because the freq_table of external clk (fsiack) are all 0,
* the return value of clk_round_rate became 0.
* So, it use __fsi_set_rate here.
*/
ret = __fsi_set_rate(fsiack, rate, enable);
if (ret < 0)
goto fsiack_out;
ret = __fsi_set_round_rate(fsia_ick, rate, enable);
if ((ret < 0) && enable)
__fsi_set_round_rate(fsiack, rate, 0); /* disable FSI ACK */
fsiack_out:
clk_put(fsiack);
fsia_ick_out:
clk_put(fsia_ick);
return 0;
}
static int fsi_hdmi_set_rate(struct device *dev, int rate, int enable)
{
struct clk *fsib_clk;
struct clk *fdiv_clk = &sh7372_fsidivb_clk;
long fsib_rate = 0;
long fdiv_rate = 0;
int ackmd_bpfmd;
int ret;
/* set_rate is not needed if port A */
if (is_porta)
return 0;
fsib_clk = clk_get(NULL, "fsib_clk");
if (IS_ERR(fsib_clk))
return -EINVAL;
switch (rate) {
case 44100:
clk_set_rate(fsib_clk, clk_round_rate(fsib_clk, 11283000));
ret = SH_FSI_ACKMD_256 | SH_FSI_BPFMD_64;
fsib_rate = rate * 256;
ackmd_bpfmd = SH_FSI_ACKMD_256 | SH_FSI_BPFMD_64;
break;
case 48000:
clk_set_rate(fsib_clk, clk_round_rate(fsib_clk, 85428000));
clk_set_rate(fdiv_clk, clk_round_rate(fdiv_clk, 12204000));
ret = SH_FSI_ACKMD_256 | SH_FSI_BPFMD_64;
fsib_rate = 85428000; /* around 48kHz x 256 x 7 */
fdiv_rate = rate * 256;
ackmd_bpfmd = SH_FSI_ACKMD_256 | SH_FSI_BPFMD_64;
break;
default:
pr_err("unsupported rate in FSI2 port B\n");
ret = -EINVAL;
break;
return -EINVAL;
}
/* FSI B setting */
fsib_clk = clk_get(dev, "ickb");
if (IS_ERR(fsib_clk))
return -EIO;
ret = __fsi_set_round_rate(fsib_clk, fsib_rate, enable);
clk_put(fsib_clk);
if (ret < 0)
return ret;
/* FSI DIV setting */
ret = __fsi_set_round_rate(fdiv_clk, fdiv_rate, enable);
if (ret < 0) {
/* disable FSI B */
if (enable)
__fsi_set_round_rate(fsib_clk, fsib_rate, 0);
return ret;
}
return ackmd_bpfmd;
}
static int fsi_set_rate(struct device *dev, int is_porta, int rate, int enable)
{
int ret;
if (is_porta)
ret = fsi_ak4642_set_rate(dev, rate, enable);
else
ret = fsi_hdmi_set_rate(dev, rate, enable);
return ret;
}
@ -880,6 +969,11 @@ static int __init hdmi_init_pm_clock(void)
goto out;
}
ret = clk_enable(&sh7372_pllc2_clk);
if (ret < 0) {
pr_err("Cannot enable pllc2 clock\n");
goto out;
}
pr_debug("PLLC2 set frequency %lu\n", rate);
ret = clk_set_parent(hdmi_ick, &sh7372_pllc2_clk);
@ -896,23 +990,11 @@ out:
device_initcall(hdmi_init_pm_clock);
#define FSIACK_DUMMY_RATE 48000
static int __init fsi_init_pm_clock(void)
{
struct clk *fsia_ick;
int ret;
/*
* FSIACK is connected to AK4642,
* and the rate is depend on playing sound rate.
* So, set dummy rate (= 48k) here
*/
ret = clk_set_rate(&sh7372_fsiack_clk, FSIACK_DUMMY_RATE);
if (ret < 0) {
pr_err("Cannot set FSIACK dummy rate: %d\n", ret);
return ret;
}
fsia_ick = clk_get(&fsi_device.dev, "icka");
if (IS_ERR(fsia_ick)) {
ret = PTR_ERR(fsia_ick);
@ -921,16 +1003,9 @@ static int __init fsi_init_pm_clock(void)
}
ret = clk_set_parent(fsia_ick, &sh7372_fsiack_clk);
if (ret < 0) {
pr_err("Cannot set FSI-A parent: %d\n", ret);
goto out;
}
ret = clk_set_rate(fsia_ick, FSIACK_DUMMY_RATE);
if (ret < 0)
pr_err("Cannot set FSI-A rate: %d\n", ret);
pr_err("Cannot set FSI-A parent: %d\n", ret);
out:
clk_put(fsia_ick);
return ret;

33
arch/arm/mach-shmobile/clock-sh7372.c
Просмотреть файл

@ -229,21 +229,13 @@ static int pllc2_set_rate(struct clk *clk, unsigned long rate)
if (idx < 0)
return idx;
if (rate == clk->parent->rate) {
pllc2_disable(clk);
return 0;
}
if (rate == clk->parent->rate)
return -EINVAL;
value = __raw_readl(PLLC2CR) & ~(0x3f << 24);
if (value & 0x80000000)
pllc2_disable(clk);
__raw_writel((value & ~0x80000000) | ((idx + 19) << 24), PLLC2CR);
if (value & 0x80000000)
return pllc2_enable(clk);
return 0;
}
@ -452,10 +444,8 @@ static int fsidiv_enable(struct clk *clk)
unsigned long value;
value = __raw_readl(clk->mapping->base) >> 16;
if (value < 2) {
fsidiv_disable(clk);
return -ENOENT;
}
if (value < 2)
return -EIO;
__raw_writel((value << 16) | 0x3, clk->mapping->base);
@ -466,17 +456,12 @@ static int fsidiv_set_rate(struct clk *clk, unsigned long rate)
{
int idx;
if (clk->parent->rate == rate) {
fsidiv_disable(clk);
return 0;
}
idx = (clk->parent->rate / rate) & 0xffff;
if (idx < 2)
return -ENOENT;
return -EINVAL;
__raw_writel(idx << 16, clk->mapping->base);
return fsidiv_enable(clk);
return 0;
}
static struct clk_ops fsidiv_clk_ops = {
@ -607,8 +592,6 @@ static struct clk_lookup lookups[] = {
CLKDEV_CON_ID("vck3_clk", &div6_clks[DIV6_VCK3]),
CLKDEV_CON_ID("fmsi_clk", &div6_clks[DIV6_FMSI]),
CLKDEV_CON_ID("fmso_clk", &div6_clks[DIV6_FMSO]),
CLKDEV_CON_ID("fsia_clk", &div6_reparent_clks[DIV6_FSIA]),
CLKDEV_CON_ID("fsib_clk", &div6_reparent_clks[DIV6_FSIB]),
CLKDEV_CON_ID("sub_clk", &div6_clks[DIV6_SUB]),
CLKDEV_CON_ID("spu_clk", &div6_clks[DIV6_SPU]),
CLKDEV_CON_ID("vou_clk", &div6_clks[DIV6_VOU]),
@ -645,8 +628,8 @@ static struct clk_lookup lookups[] = {
CLKDEV_DEV_ID("sh_cmt.10", &mstp_clks[MSTP329]), /* CMT10 */
CLKDEV_DEV_ID("sh_fsi2", &mstp_clks[MSTP328]), /* FSI2 */
CLKDEV_DEV_ID("i2c-sh_mobile.1", &mstp_clks[MSTP323]), /* IIC1 */
CLKDEV_DEV_ID("r8a66597_hcd.0", &mstp_clks[MSTP323]), /* USB0 */
CLKDEV_DEV_ID("r8a66597_udc.0", &mstp_clks[MSTP323]), /* USB0 */
CLKDEV_DEV_ID("r8a66597_hcd.0", &mstp_clks[MSTP322]), /* USB0 */
CLKDEV_DEV_ID("r8a66597_udc.0", &mstp_clks[MSTP322]), /* USB0 */
CLKDEV_DEV_ID("sh_mobile_sdhi.0", &mstp_clks[MSTP314]), /* SDHI0 */
CLKDEV_DEV_ID("sh_mobile_sdhi.1", &mstp_clks[MSTP313]), /* SDHI1 */
CLKDEV_DEV_ID("sh_mmcif.0", &mstp_clks[MSTP312]), /* MMC */

3
arch/arm/plat-pxa/include/plat/sdhci.h
Просмотреть файл

@ -17,6 +17,9 @@
/* Require clock free running */
#define PXA_FLAG_DISABLE_CLOCK_GATING (1<<0)
/* Board design supports 8-bit data on SD/SDIO BUS */
#define PXA_FLAG_SD_8_BIT_CAPABLE_SLOT (1<<2)
/*
* struct pxa_sdhci_platdata() - Platform device data for PXA SDHCI
* @max_speed: the maximum speed supported

6
arch/arm/plat-s3c24xx/spi-bus0-gpe11_12_13.c
Просмотреть файл

@ -29,8 +29,8 @@ void s3c24xx_spi_gpiocfg_bus0_gpe11_12_13(struct s3c2410_spi_info *spi,
} else {
s3c_gpio_cfgpin(S3C2410_GPE(13), S3C2410_GPIO_INPUT);
s3c_gpio_cfgpin(S3C2410_GPE(11), S3C2410_GPIO_INPUT);
s3c_gpio_cfgpull(S3C2410_GPE(11), S3C_GPIO_PULL_NONE);
s3c_gpio_cfgpull(S3C2410_GPE(12), S3C_GPIO_PULL_NONE);
s3c_gpio_cfgpull(S3C2410_GPE(13), S3C_GPIO_PULL_NONE);
s3c_gpio_setpull(S3C2410_GPE(11), S3C_GPIO_PULL_NONE);
s3c_gpio_setpull(S3C2410_GPE(12), S3C_GPIO_PULL_NONE);
s3c_gpio_setpull(S3C2410_GPE(13), S3C_GPIO_PULL_NONE);
}
}

6
arch/arm/plat-s3c24xx/spi-bus1-gpd8_9_10.c
Просмотреть файл

@ -31,8 +31,8 @@ void s3c24xx_spi_gpiocfg_bus1_gpd8_9_10(struct s3c2410_spi_info *spi,
} else {
s3c_gpio_cfgpin(S3C2410_GPD(8), S3C2410_GPIO_INPUT);
s3c_gpio_cfgpin(S3C2410_GPD(9), S3C2410_GPIO_INPUT);
s3c_gpio_cfgpull(S3C2410_GPD(10), S3C_GPIO_PULL_NONE);
s3c_gpio_cfgpull(S3C2410_GPD(9), S3C_GPIO_PULL_NONE);
s3c_gpio_cfgpull(S3C2410_GPD(8), S3C_GPIO_PULL_NONE);
s3c_gpio_setpull(S3C2410_GPD(10), S3C_GPIO_PULL_NONE);
s3c_gpio_setpull(S3C2410_GPD(9), S3C_GPIO_PULL_NONE);
s3c_gpio_setpull(S3C2410_GPD(8), S3C_GPIO_PULL_NONE);
}
}

6
arch/arm/plat-s3c24xx/spi-bus1-gpg5_6_7.c
Просмотреть файл

@ -29,8 +29,8 @@ void s3c24xx_spi_gpiocfg_bus1_gpg5_6_7(struct s3c2410_spi_info *spi,
} else {
s3c_gpio_cfgpin(S3C2410_GPG(7), S3C2410_GPIO_INPUT);
s3c_gpio_cfgpin(S3C2410_GPG(5), S3C2410_GPIO_INPUT);
s3c_gpio_cfgpull(S3C2410_GPG(5), S3C_GPIO_PULL_NONE);
s3c_gpio_cfgpull(S3C2410_GPG(6), S3C_GPIO_PULL_NONE);
s3c_gpio_cfgpull(S3C2410_GPG(7), S3C_GPIO_PULL_NONE);
s3c_gpio_setpull(S3C2410_GPG(5), S3C_GPIO_PULL_NONE);
s3c_gpio_setpull(S3C2410_GPG(6), S3C_GPIO_PULL_NONE);
s3c_gpio_setpull(S3C2410_GPG(7), S3C_GPIO_PULL_NONE);
}
}

2
arch/powerpc/mm/pgtable.c
Просмотреть файл

@ -92,7 +92,7 @@ static void pte_free_rcu_callback(struct rcu_head *head)
static void pte_free_submit(struct pte_freelist_batch *batch)
{
call_rcu(&batch->rcu, pte_free_rcu_callback);
call_rcu_sched(&batch->rcu, pte_free_rcu_callback);
}
void pgtable_free_tlb(struct mmu_gather *tlb, void *table, unsigned shift)

10
arch/s390/kernel/nmi.c
Просмотреть файл

@ -95,7 +95,6 @@ EXPORT_SYMBOL_GPL(s390_handle_mcck);
static int notrace s390_revalidate_registers(struct mci *mci)
{
int kill_task;
u64 tmpclock;
u64 zero;
void *fpt_save_area, *fpt_creg_save_area;
@ -214,11 +213,10 @@ static int notrace s390_revalidate_registers(struct mci *mci)
: "0", "cc");
#endif
/* Revalidate clock comparator register */
asm volatile(
" stck 0(%1)\n"
" sckc 0(%1)"
: "=m" (tmpclock) : "a" (&(tmpclock)) : "cc", "memory");
if (S390_lowcore.clock_comparator == -1)
set_clock_comparator(S390_lowcore.mcck_clock);
else
set_clock_comparator(S390_lowcore.clock_comparator);
/* Check if old PSW is valid */
if (!mci->wp)
/*

14
arch/s390/lib/delay.c
Просмотреть файл

@ -29,17 +29,21 @@ static void __udelay_disabled(unsigned long long usecs)
{
unsigned long mask, cr0, cr0_saved;
u64 clock_saved;
u64 end;
mask = psw_kernel_bits | PSW_MASK_WAIT | PSW_MASK_EXT;
end = get_clock() + (usecs << 12);
clock_saved = local_tick_disable();
set_clock_comparator(get_clock() + (usecs << 12));
__ctl_store(cr0_saved, 0, 0);
cr0 = (cr0_saved & 0xffff00e0) | 0x00000800;
__ctl_load(cr0 , 0, 0);
mask = psw_kernel_bits | PSW_MASK_WAIT | PSW_MASK_EXT;
lockdep_off();
trace_hardirqs_on();
__load_psw_mask(mask);
local_irq_disable();
do {
set_clock_comparator(end);
trace_hardirqs_on();
__load_psw_mask(mask);
local_irq_disable();
} while (get_clock() < end);
lockdep_on();
__ctl_load(cr0_saved, 0, 0);
local_tick_enable(clock_saved);

2
arch/x86/Kconfig
Просмотреть файл

@ -21,7 +21,7 @@ config X86
select HAVE_UNSTABLE_SCHED_CLOCK
select HAVE_IDE
select HAVE_OPROFILE
select HAVE_PERF_EVENTS if (!M386 && !M486)
select HAVE_PERF_EVENTS
select HAVE_IRQ_WORK
select HAVE_IOREMAP_PROT
select HAVE_KPROBES

2
arch/x86/include/asm/msr-index.h
Просмотреть файл

@ -128,7 +128,7 @@
#define FAM10H_MMIO_CONF_ENABLE (1<<0)
#define FAM10H_MMIO_CONF_BUSRANGE_MASK 0xf
#define FAM10H_MMIO_CONF_BUSRANGE_SHIFT 2
#define FAM10H_MMIO_CONF_BASE_MASK 0xfffffff
#define FAM10H_MMIO_CONF_BASE_MASK 0xfffffffULL
#define FAM10H_MMIO_CONF_BASE_SHIFT 20
#define MSR_FAM10H_NODE_ID 0xc001100c

10
arch/x86/include/asm/paravirt.h
Просмотреть файл

@ -824,27 +824,27 @@ static __always_inline void arch_spin_unlock(struct arch_spinlock *lock)
#define __PV_IS_CALLEE_SAVE(func) \
((struct paravirt_callee_save) { func })
static inline unsigned long arch_local_save_flags(void)
static inline notrace unsigned long arch_local_save_flags(void)
{
return PVOP_CALLEE0(unsigned long, pv_irq_ops.save_fl);
}
static inline void arch_local_irq_restore(unsigned long f)
static inline notrace void arch_local_irq_restore(unsigned long f)
{
PVOP_VCALLEE1(pv_irq_ops.restore_fl, f);
}
static inline void arch_local_irq_disable(void)
static inline notrace void arch_local_irq_disable(void)
{
PVOP_VCALLEE0(pv_irq_ops.irq_disable);
}
static inline void arch_local_irq_enable(void)
static inline notrace void arch_local_irq_enable(void)
{
PVOP_VCALLEE0(pv_irq_ops.irq_enable);
}
static inline unsigned long arch_local_irq_save(void)
static inline notrace unsigned long arch_local_irq_save(void)
{
unsigned long f;

4
arch/x86/include/asm/uv/uv_hub.h
Просмотреть файл

@ -199,6 +199,8 @@ union uvh_apicid {
#define UVH_APICID 0x002D0E00L
#define UV_APIC_PNODE_SHIFT 6
#define UV_APICID_HIBIT_MASK 0xffff0000
/* Local Bus from cpu's perspective */
#define LOCAL_BUS_BASE 0x1c00000
#define LOCAL_BUS_SIZE (4 * 1024 * 1024)
@ -491,8 +493,10 @@ static inline void uv_set_cpu_scir_bits(int cpu, unsigned char value)
}
}
extern unsigned int uv_apicid_hibits;
static unsigned long uv_hub_ipi_value(int apicid, int vector, int mode)
{
apicid |= uv_apicid_hibits;
return (1UL << UVH_IPI_INT_SEND_SHFT) |
((apicid) << UVH_IPI_INT_APIC_ID_SHFT) |
(mode << UVH_IPI_INT_DELIVERY_MODE_SHFT) |

19
arch/x86/include/asm/uv/uv_mmrs.h
Просмотреть файл

@ -5,7 +5,7 @@
*
* SGI UV MMR definitions
*
* Copyright (C) 2007-2008 Silicon Graphics, Inc. All rights reserved.
* Copyright (C) 2007-2010 Silicon Graphics, Inc. All rights reserved.
*/
#ifndef _ASM_X86_UV_UV_MMRS_H
@ -753,6 +753,23 @@ union uvh_lb_bau_sb_descriptor_base_u {
} s;
};
/* ========================================================================= */
/* UVH_LB_TARGET_PHYSICAL_APIC_ID_MASK */
/* ========================================================================= */
#define UVH_LB_TARGET_PHYSICAL_APIC_ID_MASK 0x320130UL
#define UVH_LB_TARGET_PHYSICAL_APIC_ID_MASK_32 0x009f0
#define UVH_LB_TARGET_PHYSICAL_APIC_ID_MASK_BIT_ENABLES_SHFT 0
#define UVH_LB_TARGET_PHYSICAL_APIC_ID_MASK_BIT_ENABLES_MASK 0x00000000ffffffffUL
union uvh_lb_target_physical_apic_id_mask_u {
unsigned long v;
struct uvh_lb_target_physical_apic_id_mask_s {
unsigned long bit_enables : 32; /* RW */
unsigned long rsvd_32_63 : 32; /* */
} s;
};
/* ========================================================================= */
/* UVH_NODE_ID */
/* ========================================================================= */

7
arch/x86/kernel/apic/hw_nmi.c
Просмотреть файл

@ -17,15 +17,16 @@
#include <linux/nmi.h>
#include <linux/module.h>
/* For reliability, we're prepared to waste bits here. */
static DECLARE_BITMAP(backtrace_mask, NR_CPUS) __read_mostly;
u64 hw_nmi_get_sample_period(void)
{
return (u64)(cpu_khz) * 1000 * 60;
}
#ifdef ARCH_HAS_NMI_WATCHDOG
/* For reliability, we're prepared to waste bits here. */
static DECLARE_BITMAP(backtrace_mask, NR_CPUS) __read_mostly;
void arch_trigger_all_cpu_backtrace(void)
{
int i;

25
arch/x86/kernel/apic/x2apic_uv_x.c
Просмотреть файл

@ -44,6 +44,8 @@ static u64 gru_start_paddr, gru_end_paddr;
static union uvh_apicid uvh_apicid;
int uv_min_hub_revision_id;
EXPORT_SYMBOL_GPL(uv_min_hub_revision_id);
unsigned int uv_apicid_hibits;
EXPORT_SYMBOL_GPL(uv_apicid_hibits);
static DEFINE_SPINLOCK(uv_nmi_lock);
static inline bool is_GRU_range(u64 start, u64 end)
@ -85,6 +87,23 @@ static void __init early_get_apic_pnode_shift(void)
uvh_apicid.s.pnode_shift = UV_APIC_PNODE_SHIFT;
}
/*
* Add an extra bit as dictated by bios to the destination apicid of
* interrupts potentially passing through the UV HUB. This prevents
* a deadlock between interrupts and IO port operations.
*/
static void __init uv_set_apicid_hibit(void)
{
union uvh_lb_target_physical_apic_id_mask_u apicid_mask;
unsigned long *mmr;
mmr = early_ioremap(UV_LOCAL_MMR_BASE |
UVH_LB_TARGET_PHYSICAL_APIC_ID_MASK, sizeof(*mmr));
apicid_mask.v = *mmr;
early_iounmap(mmr, sizeof(*mmr));
uv_apicid_hibits = apicid_mask.s.bit_enables & UV_APICID_HIBIT_MASK;
}
static int __init uv_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
{
int nodeid;
@ -102,6 +121,7 @@ static int __init uv_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
__get_cpu_var(x2apic_extra_bits) =
nodeid << (uvh_apicid.s.pnode_shift - 1);
uv_system_type = UV_NON_UNIQUE_APIC;
uv_set_apicid_hibit();
return 1;
}
}
@ -155,6 +175,7 @@ static int __cpuinit uv_wakeup_secondary(int phys_apicid, unsigned long start_ri
int pnode;
pnode = uv_apicid_to_pnode(phys_apicid);
phys_apicid |= uv_apicid_hibits;
val = (1UL << UVH_IPI_INT_SEND_SHFT) |
(phys_apicid << UVH_IPI_INT_APIC_ID_SHFT) |
((start_rip << UVH_IPI_INT_VECTOR_SHFT) >> 12) |
@ -236,7 +257,7 @@ static unsigned int uv_cpu_mask_to_apicid(const struct cpumask *cpumask)
int cpu = cpumask_first(cpumask);
if ((unsigned)cpu < nr_cpu_ids)
return per_cpu(x86_cpu_to_apicid, cpu);
return per_cpu(x86_cpu_to_apicid, cpu) | uv_apicid_hibits;
else
return BAD_APICID;
}
@ -255,7 +276,7 @@ uv_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
if (cpumask_test_cpu(cpu, cpu_online_mask))
break;
}
return per_cpu(x86_cpu_to_apicid, cpu);
return per_cpu(x86_cpu_to_apicid, cpu) | uv_apicid_hibits;
}
static unsigned int x2apic_get_apic_id(unsigned long x)

20
arch/x86/kernel/cpu/perf_event.c
Просмотреть файл

@ -381,6 +381,20 @@ static void release_pmc_hardware(void) {}
#endif
static bool check_hw_exists(void)
{
u64 val, val_new = 0;
int ret = 0;
val = 0xabcdUL;
ret |= checking_wrmsrl(x86_pmu.perfctr, val);
ret |= rdmsrl_safe(x86_pmu.perfctr, &val_new);
if (ret || val != val_new)
return false;
return true;
}
static void reserve_ds_buffers(void);
static void release_ds_buffers(void);
@ -1372,6 +1386,12 @@ void __init init_hw_perf_events(void)
pmu_check_apic();
/* sanity check that the hardware exists or is emulated */
if (!check_hw_exists()) {
pr_cont("Broken PMU hardware detected, software events only.\n");
return;
}
pr_cont("%s PMU driver.\n", x86_pmu.name);
if (x86_pmu.quirks)

2
arch/x86/kernel/entry_32.S
Просмотреть файл

@ -395,7 +395,7 @@ sysenter_past_esp:
* A tiny bit of offset fixup is necessary - 4*4 means the 4 words
* pushed above; +8 corresponds to copy_thread's esp0 setting.
*/
pushl_cfi (TI_sysenter_return-THREAD_SIZE_asm+8+4*4)(%esp)
pushl_cfi ((TI_sysenter_return)-THREAD_SIZE_asm+8+4*4)(%esp)
CFI_REL_OFFSET eip, 0
pushl_cfi %eax

2
arch/x86/kernel/entry_64.S
Просмотреть файл

@ -295,6 +295,7 @@ ENDPROC(native_usergs_sysret64)
.endm
/* save partial stack frame */
.pushsection .kprobes.text, "ax"
ENTRY(save_args)
XCPT_FRAME
cld
@ -334,6 +335,7 @@ ENTRY(save_args)
ret
CFI_ENDPROC
END(save_args)
.popsection
ENTRY(save_rest)
PARTIAL_FRAME 1 REST_SKIP+8

4
arch/x86/kernel/hw_breakpoint.c
Просмотреть файл

@ -433,6 +433,10 @@ static int __kprobes hw_breakpoint_handler(struct die_args *args)
dr6_p = (unsigned long *)ERR_PTR(args->err);
dr6 = *dr6_p;
/* If it's a single step, TRAP bits are random */
if (dr6 & DR_STEP)
return NOTIFY_DONE;
/* Do an early return if no trap bits are set in DR6 */
if ((dr6 & DR_TRAP_BITS) == 0)
return NOTIFY_DONE;

64
arch/x86/kernel/mmconf-fam10h_64.c
Просмотреть файл

@ -25,7 +25,6 @@ struct pci_hostbridge_probe {
};
static u64 __cpuinitdata fam10h_pci_mmconf_base;
static int __cpuinitdata fam10h_pci_mmconf_base_status;
static struct pci_hostbridge_probe pci_probes[] __cpuinitdata = {
{ 0, 0x18, PCI_VENDOR_ID_AMD, 0x1200 },
@ -44,10 +43,12 @@ static int __cpuinit cmp_range(const void *x1, const void *x2)
return start1 - start2;
}
/*[47:0] */
/* need to avoid (0xfd<<32) and (0xfe<<32), ht used space */
#define MMCONF_UNIT (1ULL << FAM10H_MMIO_CONF_BASE_SHIFT)
#define MMCONF_MASK (~(MMCONF_UNIT - 1))
#define MMCONF_SIZE (MMCONF_UNIT << 8)
/* need to avoid (0xfd<<32), (0xfe<<32), and (0xff<<32), ht used space */
#define FAM10H_PCI_MMCONF_BASE (0xfcULL<<32)
#define BASE_VALID(b) ((b != (0xfdULL << 32)) && (b != (0xfeULL << 32)))
#define BASE_VALID(b) ((b) + MMCONF_SIZE <= (0xfdULL<<32) || (b) >= (1ULL<<40))
static void __cpuinit get_fam10h_pci_mmconf_base(void)
{
int i;
@ -64,12 +65,11 @@ static void __cpuinit get_fam10h_pci_mmconf_base(void)
struct range range[8];
/* only try to get setting from BSP */
/* -1 or 1 */
if (fam10h_pci_mmconf_base_status)
if (fam10h_pci_mmconf_base)
return;
if (!early_pci_allowed())
goto fail;
return;
found = 0;
for (i = 0; i < ARRAY_SIZE(pci_probes); i++) {
@ -91,7 +91,7 @@ static void __cpuinit get_fam10h_pci_mmconf_base(void)
}
if (!found)
goto fail;
return;
/* SYS_CFG */
address = MSR_K8_SYSCFG;
@ -99,16 +99,16 @@ static void __cpuinit get_fam10h_pci_mmconf_base(void)
/* TOP_MEM2 is not enabled? */
if (!(val & (1<<21))) {
tom2 = 0;
tom2 = 1ULL << 32;
} else {
/* TOP_MEM2 */
address = MSR_K8_TOP_MEM2;
rdmsrl(address, val);
tom2 = val & (0xffffULL<<32);
tom2 = max(val & 0xffffff800000ULL, 1ULL << 32);
}
if (base <= tom2)
base = tom2 + (1ULL<<32);
base = (tom2 + 2 * MMCONF_UNIT - 1) & MMCONF_MASK;
/*
* need to check if the range is in the high mmio range that is
@ -123,11 +123,11 @@ static void __cpuinit get_fam10h_pci_mmconf_base(void)
if (!(reg & 3))
continue;
start = (((u64)reg) << 8) & (0xffULL << 32); /* 39:16 on 31:8*/
start = (u64)(reg & 0xffffff00) << 8; /* 39:16 on 31:8*/
reg = read_pci_config(bus, slot, 1, 0x84 + (i << 3));
end = (((u64)reg) << 8) & (0xffULL << 32); /* 39:16 on 31:8*/
end = ((u64)(reg & 0xffffff00) << 8) | 0xffff; /* 39:16 on 31:8*/
if (!end)
if (end < tom2)
continue;
range[hi_mmio_num].start = start;
@ -143,32 +143,27 @@ static void __cpuinit get_fam10h_pci_mmconf_base(void)
if (range[hi_mmio_num - 1].end < base)
goto out;
if (range[0].start > base)
if (range[0].start > base + MMCONF_SIZE)
goto out;
/* need to find one window */
base = range[0].start - (1ULL << 32);
base = (range[0].start & MMCONF_MASK) - MMCONF_UNIT;
if ((base > tom2) && BASE_VALID(base))
goto out;
base = range[hi_mmio_num - 1].end + (1ULL << 32);
if ((base > tom2) && BASE_VALID(base))
base = (range[hi_mmio_num - 1].end + MMCONF_UNIT) & MMCONF_MASK;
if (BASE_VALID(base))
goto out;
/* need to find window between ranges */
if (hi_mmio_num > 1)
for (i = 0; i < hi_mmio_num - 1; i++) {
if (range[i + 1].start > (range[i].end + (1ULL << 32))) {
base = range[i].end + (1ULL << 32);
if ((base > tom2) && BASE_VALID(base))
goto out;
}
for (i = 1; i < hi_mmio_num; i++) {
base = (range[i - 1].end + MMCONF_UNIT) & MMCONF_MASK;
val = range[i].start & MMCONF_MASK;
if (val >= base + MMCONF_SIZE && BASE_VALID(base))
goto out;
}
fail:
fam10h_pci_mmconf_base_status = -1;
return;
out:
fam10h_pci_mmconf_base = base;
fam10h_pci_mmconf_base_status = 1;
}
void __cpuinit fam10h_check_enable_mmcfg(void)
@ -190,11 +185,10 @@ void __cpuinit fam10h_check_enable_mmcfg(void)
/* only trust the one handle 256 buses, if acpi=off */
if (!acpi_pci_disabled || busnbits >= 8) {
u64 base;
base = val & (0xffffULL << 32);
if (fam10h_pci_mmconf_base_status <= 0) {
u64 base = val & MMCONF_MASK;
if (!fam10h_pci_mmconf_base) {
fam10h_pci_mmconf_base = base;
fam10h_pci_mmconf_base_status = 1;
return;
} else if (fam10h_pci_mmconf_base == base)
return;
@ -206,8 +200,10 @@ void __cpuinit fam10h_check_enable_mmcfg(void)
* with 256 buses
*/
get_fam10h_pci_mmconf_base();
if (fam10h_pci_mmconf_base_status <= 0)
if (!fam10h_pci_mmconf_base) {
pci_probe &= ~PCI_CHECK_ENABLE_AMD_MMCONF;
return;
}
printk(KERN_INFO "Enable MMCONFIG on AMD Family 10h\n");
val &= ~((FAM10H_MMIO_CONF_BASE_MASK<<FAM10H_MMIO_CONF_BASE_SHIFT) |

5
arch/x86/mm/tlb.c
Просмотреть файл

@ -223,7 +223,7 @@ void native_flush_tlb_others(const struct cpumask *cpumask,
static void __cpuinit calculate_tlb_offset(void)
{
int cpu, node, nr_node_vecs;
int cpu, node, nr_node_vecs, idx = 0;
/*
* we are changing tlb_vector_offset for each CPU in runtime, but this
* will not cause inconsistency, as the write is atomic under X86. we
@ -239,7 +239,7 @@ static void __cpuinit calculate_tlb_offset(void)
nr_node_vecs = NUM_INVALIDATE_TLB_VECTORS/nr_online_nodes;
for_each_online_node(node) {
int node_offset = (node % NUM_INVALIDATE_TLB_VECTORS) *
int node_offset = (idx % NUM_INVALIDATE_TLB_VECTORS) *
nr_node_vecs;
int cpu_offset = 0;
for_each_cpu(cpu, cpumask_of_node(node)) {
@ -248,6 +248,7 @@ static void __cpuinit calculate_tlb_offset(void)
cpu_offset++;
cpu_offset = cpu_offset % nr_node_vecs;
}
idx++;
}
}

2
arch/x86/platform/uv/tlb_uv.c
Просмотреть файл

@ -1455,7 +1455,7 @@ static void __init uv_init_uvhub(int uvhub, int vector)
* the below initialization can't be in firmware because the
* messaging IRQ will be determined by the OS
*/
apicid = uvhub_to_first_apicid(uvhub);
apicid = uvhub_to_first_apicid(uvhub) | uv_apicid_hibits;
uv_write_global_mmr64(pnode, UVH_BAU_DATA_CONFIG,
((apicid << 32) | vector));
}

4
arch/x86/platform/uv/uv_time.c
Просмотреть файл

@ -89,6 +89,7 @@ static void uv_rtc_send_IPI(int cpu)
apicid = cpu_physical_id(cpu);
pnode = uv_apicid_to_pnode(apicid);
apicid |= uv_apicid_hibits;
val = (1UL << UVH_IPI_INT_SEND_SHFT) |
(apicid << UVH_IPI_INT_APIC_ID_SHFT) |
(X86_PLATFORM_IPI_VECTOR << UVH_IPI_INT_VECTOR_SHFT);
@ -107,6 +108,7 @@ static int uv_intr_pending(int pnode)
static int uv_setup_intr(int cpu, u64 expires)
{
u64 val;
unsigned long apicid = cpu_physical_id(cpu) | uv_apicid_hibits;
int pnode = uv_cpu_to_pnode(cpu);
uv_write_global_mmr64(pnode, UVH_RTC1_INT_CONFIG,
@ -117,7 +119,7 @@ static int uv_setup_intr(int cpu, u64 expires)
UVH_EVENT_OCCURRED0_RTC1_MASK);
val = (X86_PLATFORM_IPI_VECTOR << UVH_RTC1_INT_CONFIG_VECTOR_SHFT) |
((u64)cpu_physical_id(cpu) << UVH_RTC1_INT_CONFIG_APIC_ID_SHFT);
((u64)apicid << UVH_RTC1_INT_CONFIG_APIC_ID_SHFT);
/* Set configuration */
uv_write_global_mmr64(pnode, UVH_RTC1_INT_CONFIG, val);

2
block/blk-throttle.c
Просмотреть файл

@ -645,7 +645,7 @@ static int throtl_dispatch_tg(struct throtl_data *td, struct throtl_grp *tg,
{
unsigned int nr_reads = 0, nr_writes = 0;
unsigned int max_nr_reads = throtl_grp_quantum*3/4;
unsigned int max_nr_writes = throtl_grp_quantum - nr_reads;
unsigned int max_nr_writes = throtl_grp_quantum - max_nr_reads;
struct bio *bio;
/* Try to dispatch 75% READS and 25% WRITES */

2
drivers/block/amiflop.c
Просмотреть файл

@ -1341,7 +1341,7 @@ static struct request *set_next_request(void)
{
struct request_queue *q;
int cnt = FD_MAX_UNITS;
struct request *rq;
struct request *rq = NULL;
/* Find next queue we can dispatch from */
fdc_queue = fdc_queue + 1;

2
drivers/block/ataflop.c
Просмотреть файл

@ -1399,7 +1399,7 @@ static struct request *set_next_request(void)
{
struct request_queue *q;
int old_pos = fdc_queue;
struct request *rq;
struct request *rq = NULL;
do {
q = unit[fdc_queue].disk->queue;

3
drivers/block/cciss.c
Просмотреть файл

@ -66,6 +66,7 @@ MODULE_VERSION("3.6.26");
MODULE_LICENSE("GPL");
static DEFINE_MUTEX(cciss_mutex);
static struct proc_dir_entry *proc_cciss;
#include "cciss_cmd.h"
#include "cciss.h"
@ -363,8 +364,6 @@ static const char *raid_label[] = { "0", "4", "1(1+0)", "5", "5+1", "ADG",
#define ENG_GIG_FACTOR (ENG_GIG/512)
#define ENGAGE_SCSI "engage scsi"
static struct proc_dir_entry *proc_cciss;
static void cciss_seq_show_header(struct seq_file *seq)
{
ctlr_info_t *h = seq->private;

55
drivers/block/xen-blkfront.c
Просмотреть файл

@ -65,7 +65,7 @@ enum blkif_state {
struct blk_shadow {
struct blkif_request req;
unsigned long request;
struct request *request;
unsigned long frame[BLKIF_MAX_SEGMENTS_PER_REQUEST];
};
@ -136,7 +136,7 @@ static void add_id_to_freelist(struct blkfront_info *info,
unsigned long id)
{
info->shadow[id].req.id = info->shadow_free;
info->shadow[id].request = 0;
info->shadow[id].request = NULL;
info->shadow_free = id;
}
@ -245,14 +245,11 @@ static int blkif_ioctl(struct block_device *bdev, fmode_t mode,
}
/*
* blkif_queue_request
* Generate a Xen blkfront IO request from a blk layer request. Reads
* and writes are handled as expected. Since we lack a loose flush
* request, we map flushes into a full ordered barrier.
*
* request block io
*
* id: for guest use only.
* operation: BLKIF_OP_{READ,WRITE,PROBE}
* buffer: buffer to read/write into. this should be a
* virtual address in the guest os.
* @req: a request struct
*/
static int blkif_queue_request(struct request *req)
{
@ -281,7 +278,7 @@ static int blkif_queue_request(struct request *req)
/* Fill out a communications ring structure. */
ring_req = RING_GET_REQUEST(&info->ring, info->ring.req_prod_pvt);
id = get_id_from_freelist(info);
info->shadow[id].request = (unsigned long)req;
info->shadow[id].request = req;
ring_req->id = id;
ring_req->sector_number = (blkif_sector_t)blk_rq_pos(req);
@ -290,6 +287,18 @@ static int blkif_queue_request(struct request *req)
ring_req->operation = rq_data_dir(req) ?
BLKIF_OP_WRITE : BLKIF_OP_READ;
if (req->cmd_flags & (REQ_FLUSH | REQ_FUA)) {
/*
* Ideally we could just do an unordered
* flush-to-disk, but all we have is a full write
* barrier at the moment. However, a barrier write is
* a superset of FUA, so we can implement it the same
* way. (It's also a FLUSH+FUA, since it is
* guaranteed ordered WRT previous writes.)
*/
ring_req->operation = BLKIF_OP_WRITE_BARRIER;
}
ring_req->nr_segments = blk_rq_map_sg(req->q, req, info->sg);
BUG_ON(ring_req->nr_segments > BLKIF_MAX_SEGMENTS_PER_REQUEST);
@ -634,7 +643,7 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
bret = RING_GET_RESPONSE(&info->ring, i);
id = bret->id;
req = (struct request *)info->shadow[id].request;
req = info->shadow[id].request;
blkif_completion(&info->shadow[id]);
@ -647,6 +656,16 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
printk(KERN_WARNING "blkfront: %s: write barrier op failed\n",
info->gd->disk_name);
error = -EOPNOTSUPP;
}
if (unlikely(bret->status == BLKIF_RSP_ERROR &&
info->shadow[id].req.nr_segments == 0)) {
printk(KERN_WARNING "blkfront: %s: empty write barrier op failed\n",
info->gd->disk_name);
error = -EOPNOTSUPP;
}
if (unlikely(error)) {
if (error == -EOPNOTSUPP)
error = 0;
info->feature_flush = 0;
xlvbd_flush(info);
}
@ -899,7 +918,7 @@ static int blkif_recover(struct blkfront_info *info)
/* Stage 3: Find pending requests and requeue them. */
for (i = 0; i < BLK_RING_SIZE; i++) {
/* Not in use? */
if (copy[i].request == 0)
if (!copy[i].request)
continue;
/* Grab a request slot and copy shadow state into it. */
@ -916,9 +935,7 @@ static int blkif_recover(struct blkfront_info *info)
req->seg[j].gref,
info->xbdev->otherend_id,
pfn_to_mfn(info->shadow[req->id].frame[j]),
rq_data_dir(
(struct request *)
info->shadow[req->id].request));
rq_data_dir(info->shadow[req->id].request));
info->shadow[req->id].req = *req;
info->ring.req_prod_pvt++;
@ -1067,14 +1084,8 @@ static void blkfront_connect(struct blkfront_info *info)
*/
info->feature_flush = 0;
/*
* The driver doesn't properly handled empty flushes, so
* lets disable barrier support for now.
*/
#if 0
if (!err && barrier)
info->feature_flush = REQ_FLUSH;
#endif
info->feature_flush = REQ_FLUSH | REQ_FUA;
err = xlvbd_alloc_gendisk(sectors, info, binfo, sector_size);
if (err) {

24
drivers/char/tpm/tpm_tis.c
Просмотреть файл

@ -25,6 +25,7 @@
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/wait.h>
#include <linux/acpi.h>
#include "tpm.h"
#define TPM_HEADER_SIZE 10
@ -78,6 +79,26 @@ enum tis_defaults {
static LIST_HEAD(tis_chips);
static DEFINE_SPINLOCK(tis_lock);
#ifdef CONFIG_ACPI
static int is_itpm(struct pnp_dev *dev)
{
struct acpi_device *acpi = pnp_acpi_device(dev);
struct acpi_hardware_id *id;
list_for_each_entry(id, &acpi->pnp.ids, list) {
if (!strcmp("INTC0102", id->id))
return 1;
}
return 0;
}
#else
static int is_itpm(struct pnp_dev *dev)
{
return 0;
}
#endif
static int check_locality(struct tpm_chip *chip, int l)
{
if ((ioread8(chip->vendor.iobase + TPM_ACCESS(l)) &
@ -472,6 +493,9 @@ static int tpm_tis_init(struct device *dev, resource_size_t start,
"1.2 TPM (device-id 0x%X, rev-id %d)\n",
vendor >> 16, ioread8(chip->vendor.iobase + TPM_RID(0)));
if (is_itpm(to_pnp_dev(dev)))
itpm = 1;
if (itpm)
dev_info(dev, "Intel iTPM workaround enabled\n");

8
drivers/edac/Makefile
Просмотреть файл

@ -10,16 +10,16 @@ obj-$(CONFIG_EDAC) := edac_stub.o
obj-$(CONFIG_EDAC_MM_EDAC) += edac_core.o
obj-$(CONFIG_EDAC_MCE) += edac_mce.o
edac_core-objs := edac_mc.o edac_device.o edac_mc_sysfs.o edac_pci_sysfs.o
edac_core-objs += edac_module.o edac_device_sysfs.o
edac_core-y := edac_mc.o edac_device.o edac_mc_sysfs.o edac_pci_sysfs.o
edac_core-y += edac_module.o edac_device_sysfs.o
ifdef CONFIG_PCI
edac_core-objs += edac_pci.o edac_pci_sysfs.o
edac_core-y += edac_pci.o edac_pci_sysfs.o
endif
obj-$(CONFIG_EDAC_MCE_INJ) += mce_amd_inj.o
edac_mce_amd-objs := mce_amd.o
edac_mce_amd-y := mce_amd.o
obj-$(CONFIG_EDAC_DECODE_MCE) += edac_mce_amd.o
obj-$(CONFIG_EDAC_AMD76X) += amd76x_edac.o

2
drivers/edac/mce_amd_inj.c
Просмотреть файл

@ -139,7 +139,7 @@ static int __init edac_init_mce_inject(void)
return 0;
err_sysfs_create:
while (i-- >= 0)
while (--i >= 0)
sysfs_remove_file(mce_kobj, &sysfs_attrs[i]->attr);
kobject_del(mce_kobj);

160
drivers/firewire/net.c
Просмотреть файл

@ -7,6 +7,7 @@
*/
#include <linux/bug.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/firewire.h>
#include <linux/firewire-constants.h>
@ -26,8 +27,14 @@
#include <asm/unaligned.h>
#include <net/arp.h>
#define FWNET_MAX_FRAGMENTS 25 /* arbitrary limit */
#define FWNET_ISO_PAGE_COUNT (PAGE_SIZE < 16 * 1024 ? 4 : 2)
/* rx limits */
#define FWNET_MAX_FRAGMENTS 30 /* arbitrary, > TX queue depth */
#define FWNET_ISO_PAGE_COUNT (PAGE_SIZE < 16*1024 ? 4 : 2)
/* tx limits */
#define FWNET_MAX_QUEUED_DATAGRAMS 20 /* < 64 = number of tlabels */
#define FWNET_MIN_QUEUED_DATAGRAMS 10 /* should keep AT DMA busy enough */
#define FWNET_TX_QUEUE_LEN FWNET_MAX_QUEUED_DATAGRAMS /* ? */
#define IEEE1394_BROADCAST_CHANNEL 31
#define IEEE1394_ALL_NODES (0xffc0 | 0x003f)
@ -169,15 +176,8 @@ struct fwnet_device {
struct fw_address_handler handler;
u64 local_fifo;
/* List of packets to be sent */
struct list_head packet_list;
/*
* List of packets that were broadcasted. When we get an ISO interrupt
* one of them has been sent
*/
struct list_head broadcasted_list;
/* List of packets that have been sent but not yet acked */
struct list_head sent_list;
/* Number of tx datagrams that have been queued but not yet acked */
int queued_datagrams;
struct list_head peer_list;
struct fw_card *card;
@ -195,7 +195,7 @@ struct fwnet_peer {
unsigned pdg_size; /* pd_list size */
u16 datagram_label; /* outgoing datagram label */
unsigned max_payload; /* includes RFC2374_FRAG_HDR_SIZE overhead */
u16 max_payload; /* includes RFC2374_FRAG_HDR_SIZE overhead */
int node_id;
int generation;
unsigned speed;
@ -203,22 +203,18 @@ struct fwnet_peer {
/* This is our task struct. It's used for the packet complete callback. */
struct fwnet_packet_task {
/*
* ptask can actually be on dev->packet_list, dev->broadcasted_list,
* or dev->sent_list depending on its current state.
*/
struct list_head pt_link;
struct fw_transaction transaction;
struct rfc2734_header hdr;
struct sk_buff *skb;
struct fwnet_device *dev;
int outstanding_pkts;
unsigned max_payload;
u64 fifo_addr;
u16 dest_node;
u16 max_payload;
u8 generation;
u8 speed;
u8 enqueued;
};
/*
@ -650,8 +646,6 @@ static int fwnet_finish_incoming_packet(struct net_device *net,
net->stats.rx_packets++;
net->stats.rx_bytes += skb->len;
}
if (netif_queue_stopped(net))
netif_wake_queue(net);
return 0;
@ -660,8 +654,6 @@ static int fwnet_finish_incoming_packet(struct net_device *net,
net->stats.rx_dropped++;
dev_kfree_skb_any(skb);
if (netif_queue_stopped(net))
netif_wake_queue(net);
return -ENOENT;
}
@ -793,15 +785,10 @@ static int fwnet_incoming_packet(struct fwnet_device *dev, __be32 *buf, int len,
* Datagram is not complete, we're done for the
* moment.
*/
spin_unlock_irqrestore(&dev->lock, flags);
return 0;
retval = 0;
fail:
spin_unlock_irqrestore(&dev->lock, flags);
if (netif_queue_stopped(net))
netif_wake_queue(net);
return retval;
}
@ -901,11 +888,19 @@ static void fwnet_free_ptask(struct fwnet_packet_task *ptask)
kmem_cache_free(fwnet_packet_task_cache, ptask);
}
/* Caller must hold dev->lock. */
static void dec_queued_datagrams(struct fwnet_device *dev)
{
if (--dev->queued_datagrams == FWNET_MIN_QUEUED_DATAGRAMS)
netif_wake_queue(dev->netdev);
}
static int fwnet_send_packet(struct fwnet_packet_task *ptask);
static void fwnet_transmit_packet_done(struct fwnet_packet_task *ptask)
{
struct fwnet_device *dev = ptask->dev;
struct sk_buff *skb = ptask->skb;
unsigned long flags;
bool free;
@ -914,10 +909,14 @@ static void fwnet_transmit_packet_done(struct fwnet_packet_task *ptask)
ptask->outstanding_pkts--;
/* Check whether we or the networking TX soft-IRQ is last user. */
free = (ptask->outstanding_pkts == 0 && !list_empty(&ptask->pt_link));
free = (ptask->outstanding_pkts == 0 && ptask->enqueued);
if (free)
dec_queued_datagrams(dev);
if (ptask->outstanding_pkts == 0)
list_del(&ptask->pt_link);
if (ptask->outstanding_pkts == 0) {
dev->netdev->stats.tx_packets++;
dev->netdev->stats.tx_bytes += skb->len;
}
spin_unlock_irqrestore(&dev->lock, flags);
@ -926,7 +925,6 @@ static void fwnet_transmit_packet_done(struct fwnet_packet_task *ptask)
u16 fg_off;
u16 datagram_label;
u16 lf;
struct sk_buff *skb;
/* Update the ptask to point to the next fragment and send it */
lf = fwnet_get_hdr_lf(&ptask->hdr);
@ -953,7 +951,7 @@ static void fwnet_transmit_packet_done(struct fwnet_packet_task *ptask)
datagram_label = fwnet_get_hdr_dgl(&ptask->hdr);
break;
}
skb = ptask->skb;
skb_pull(skb, ptask->max_payload);
if (ptask->outstanding_pkts > 1) {
fwnet_make_sf_hdr(&ptask->hdr, RFC2374_HDR_INTFRAG,
@ -970,6 +968,31 @@ static void fwnet_transmit_packet_done(struct fwnet_packet_task *ptask)
fwnet_free_ptask(ptask);
}
static void fwnet_transmit_packet_failed(struct fwnet_packet_task *ptask)
{
struct fwnet_device *dev = ptask->dev;
unsigned long flags;
bool free;
spin_lock_irqsave(&dev->lock, flags);
/* One fragment failed; don't try to send remaining fragments. */
ptask->outstanding_pkts = 0;
/* Check whether we or the networking TX soft-IRQ is last user. */
free = ptask->enqueued;
if (free)
dec_queued_datagrams(dev);
dev->netdev->stats.tx_dropped++;
dev->netdev->stats.tx_errors++;
spin_unlock_irqrestore(&dev->lock, flags);
if (free)
fwnet_free_ptask(ptask);
}
static void fwnet_write_complete(struct fw_card *card, int rcode,
void *payload, size_t length, void *data)
{
@ -977,11 +1000,12 @@ static void fwnet_write_complete(struct fw_card *card, int rcode,
ptask = data;
if (rcode == RCODE_COMPLETE)
if (rcode == RCODE_COMPLETE) {
fwnet_transmit_packet_done(ptask);
else
} else {
fw_error("fwnet_write_complete: failed: %x\n", rcode);
/* ??? error recovery */
fwnet_transmit_packet_failed(ptask);
}
}
static int fwnet_send_packet(struct fwnet_packet_task *ptask)
@ -1039,9 +1063,11 @@ static int fwnet_send_packet(struct fwnet_packet_task *ptask)
spin_lock_irqsave(&dev->lock, flags);
/* If the AT tasklet already ran, we may be last user. */
free = (ptask->outstanding_pkts == 0 && list_empty(&ptask->pt_link));
free = (ptask->outstanding_pkts == 0 && !ptask->enqueued);
if (!free)
list_add_tail(&ptask->pt_link, &dev->broadcasted_list);
ptask->enqueued = true;
else
dec_queued_datagrams(dev);
spin_unlock_irqrestore(&dev->lock, flags);
@ -1056,9 +1082,11 @@ static int fwnet_send_packet(struct fwnet_packet_task *ptask)
spin_lock_irqsave(&dev->lock, flags);
/* If the AT tasklet already ran, we may be last user. */
free = (ptask->outstanding_pkts == 0 && list_empty(&ptask->pt_link));
free = (ptask->outstanding_pkts == 0 && !ptask->enqueued);
if (!free)
list_add_tail(&ptask->pt_link, &dev->sent_list);
ptask->enqueued = true;
else
dec_queued_datagrams(dev);
spin_unlock_irqrestore(&dev->lock, flags);
@ -1224,6 +1252,15 @@ static netdev_tx_t fwnet_tx(struct sk_buff *skb, struct net_device *net)
struct fwnet_peer *peer;
unsigned long flags;
spin_lock_irqsave(&dev->lock, flags);
/* Can this happen? */
if (netif_queue_stopped(dev->netdev)) {
spin_unlock_irqrestore(&dev->lock, flags);
return NETDEV_TX_BUSY;
}
ptask = kmem_cache_alloc(fwnet_packet_task_cache, GFP_ATOMIC);
if (ptask == NULL)
goto fail;
@ -1242,9 +1279,6 @@ static netdev_tx_t fwnet_tx(struct sk_buff *skb, struct net_device *net)
proto = hdr_buf.h_proto;
dg_size = skb->len;
/* serialize access to peer, including peer->datagram_label */
spin_lock_irqsave(&dev->lock, flags);
/*
* Set the transmission type for the packet. ARP packets and IP
* broadcast packets are sent via GASP.
@ -1266,7 +1300,7 @@ static netdev_tx_t fwnet_tx(struct sk_buff *skb, struct net_device *net)
peer = fwnet_peer_find_by_guid(dev, be64_to_cpu(guid));
if (!peer || peer->fifo == FWNET_NO_FIFO_ADDR)
goto fail_unlock;
goto fail;
generation = peer->generation;
dest_node = peer->node_id;
@ -1320,18 +1354,21 @@ static netdev_tx_t fwnet_tx(struct sk_buff *skb, struct net_device *net)
max_payload += RFC2374_FRAG_HDR_SIZE;
}
if (++dev->queued_datagrams == FWNET_MAX_QUEUED_DATAGRAMS)
netif_stop_queue(dev->netdev);
spin_unlock_irqrestore(&dev->lock, flags);
ptask->max_payload = max_payload;
INIT_LIST_HEAD(&ptask->pt_link);
ptask->enqueued = 0;
fwnet_send_packet(ptask);
return NETDEV_TX_OK;
fail_unlock:
spin_unlock_irqrestore(&dev->lock, flags);
fail:
spin_unlock_irqrestore(&dev->lock, flags);
if (ptask)
kmem_cache_free(fwnet_packet_task_cache, ptask);
@ -1377,7 +1414,7 @@ static void fwnet_init_dev(struct net_device *net)
net->addr_len = FWNET_ALEN;
net->hard_header_len = FWNET_HLEN;
net->type = ARPHRD_IEEE1394;
net->tx_queue_len = 10;
net->tx_queue_len = FWNET_TX_QUEUE_LEN;
}
/* caller must hold fwnet_device_mutex */
@ -1457,14 +1494,9 @@ static int fwnet_probe(struct device *_dev)
dev->broadcast_rcv_context = NULL;
dev->broadcast_xmt_max_payload = 0;
dev->broadcast_xmt_datagramlabel = 0;
dev->local_fifo = FWNET_NO_FIFO_ADDR;
INIT_LIST_HEAD(&dev->packet_list);
INIT_LIST_HEAD(&dev->broadcasted_list);
INIT_LIST_HEAD(&dev->sent_list);
dev->queued_datagrams = 0;
INIT_LIST_HEAD(&dev->peer_list);
dev->card = card;
dev->netdev = net;
@ -1522,7 +1554,7 @@ static int fwnet_remove(struct device *_dev)
struct fwnet_peer *peer = dev_get_drvdata(_dev);
struct fwnet_device *dev = peer->dev;
struct net_device *net;
struct fwnet_packet_task *ptask, *pt_next;
int i;
mutex_lock(&fwnet_device_mutex);
@ -1540,21 +1572,9 @@ static int fwnet_remove(struct device *_dev)
dev->card);
fw_iso_context_destroy(dev->broadcast_rcv_context);
}
list_for_each_entry_safe(ptask, pt_next,
&dev->packet_list, pt_link) {
dev_kfree_skb_any(ptask->skb);
kmem_cache_free(fwnet_packet_task_cache, ptask);
}
list_for_each_entry_safe(ptask, pt_next,
&dev->broadcasted_list, pt_link) {
dev_kfree_skb_any(ptask->skb);
kmem_cache_free(fwnet_packet_task_cache, ptask);
}
list_for_each_entry_safe(ptask, pt_next,
&dev->sent_list, pt_link) {
dev_kfree_skb_any(ptask->skb);
kmem_cache_free(fwnet_packet_task_cache, ptask);
}
for (i = 0; dev->queued_datagrams && i < 5; i++)
ssleep(1);
WARN_ON(dev->queued_datagrams);
list_del(&dev->dev_link);
free_netdev(net);

7
drivers/isdn/icn/icn.c
Просмотреть файл

@ -1627,7 +1627,7 @@ __setup("icn=", icn_setup);
static int __init icn_init(void)
{
char *p;
char rev[10];
char rev[20];
memset(&dev, 0, sizeof(icn_dev));
dev.memaddr = (membase & 0x0ffc000);
@ -1637,9 +1637,10 @@ static int __init icn_init(void)
spin_lock_init(&dev.devlock);
if ((p = strchr(revision, ':'))) {
strcpy(rev, p + 1);
strncpy(rev, p + 1, 20);
p = strchr(rev, '$');
*p = 0;
if (p)
*p = 0;
} else
strcpy(rev, " ??? ");
printk(KERN_NOTICE "ICN-ISDN-driver Rev%smem=0x%08lx\n", rev,

2
drivers/mmc/core/core.c
Просмотреть файл

@ -1559,7 +1559,7 @@ void mmc_stop_host(struct mmc_host *host)
if (host->caps & MMC_CAP_DISABLE)
cancel_delayed_work(&host->disable);
cancel_delayed_work(&host->detect);
cancel_delayed_work_sync(&host->detect);
mmc_flush_scheduled_work();
/* clear pm flags now and let card drivers set them as needed */

8
drivers/mmc/core/mmc.c
Просмотреть файл

@ -375,7 +375,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
struct mmc_card *oldcard)
{
struct mmc_card *card;
int err, ddr = MMC_SDR_MODE;
int err, ddr = 0;
u32 cid[4];
unsigned int max_dtr;
@ -562,7 +562,11 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
1 << bus_width, ddr);
err = 0;
} else {
mmc_card_set_ddr_mode(card);
if (ddr)
mmc_card_set_ddr_mode(card);
else
ddr = MMC_SDR_MODE;
mmc_set_bus_width_ddr(card->host, bus_width, ddr);
}
}

51
drivers/mmc/core/sdio.c
Просмотреть файл

@ -547,9 +547,11 @@ static void mmc_sdio_detect(struct mmc_host *host)
BUG_ON(!host->card);
/* Make sure card is powered before detecting it */
err = pm_runtime_get_sync(&host->card->dev);
if (err < 0)
goto out;
if (host->caps & MMC_CAP_POWER_OFF_CARD) {
err = pm_runtime_get_sync(&host->card->dev);
if (err < 0)
goto out;
}
mmc_claim_host(host);
@ -560,6 +562,20 @@ static void mmc_sdio_detect(struct mmc_host *host)
mmc_release_host(host);
/*
* Tell PM core it's OK to power off the card now.
*
* The _sync variant is used in order to ensure that the card
* is left powered off in case an error occurred, and the card
* is going to be removed.
*
* Since there is no specific reason to believe a new user
* is about to show up at this point, the _sync variant is
* desirable anyway.
*/
if (host->caps & MMC_CAP_POWER_OFF_CARD)
pm_runtime_put_sync(&host->card->dev);
out:
if (err) {
mmc_sdio_remove(host);
@ -568,9 +584,6 @@ out:
mmc_detach_bus(host);
mmc_release_host(host);
}
/* Tell PM core that we're done */
pm_runtime_put(&host->card->dev);
}
/*
@ -718,16 +731,21 @@ int mmc_attach_sdio(struct mmc_host *host, u32 ocr)
card = host->card;
/*
* Let runtime PM core know our card is active
* Enable runtime PM only if supported by host+card+board
*/
err = pm_runtime_set_active(&card->dev);
if (err)
goto remove;
if (host->caps & MMC_CAP_POWER_OFF_CARD) {
/*
* Let runtime PM core know our card is active
*/
err = pm_runtime_set_active(&card->dev);
if (err)
goto remove;
/*
* Enable runtime PM for this card
*/
pm_runtime_enable(&card->dev);
/*
* Enable runtime PM for this card
*/
pm_runtime_enable(&card->dev);
}
/*
* The number of functions on the card is encoded inside
@ -745,9 +763,10 @@ int mmc_attach_sdio(struct mmc_host *host, u32 ocr)
goto remove;
/*
* Enable Runtime PM for this func
* Enable Runtime PM for this func (if supported)
*/
pm_runtime_enable(&card->sdio_func[i]->dev);
if (host->caps & MMC_CAP_POWER_OFF_CARD)
pm_runtime_enable(&card->sdio_func[i]->dev);
}
mmc_release_host(host);

33
drivers/mmc/core/sdio_bus.c
Просмотреть файл

@ -17,6 +17,7 @@
#include <linux/pm_runtime.h>
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
#include <linux/mmc/sdio_func.h>
#include "sdio_cis.h"
@ -132,9 +133,11 @@ static int sdio_bus_probe(struct device *dev)
* it should call pm_runtime_put_noidle() in its probe routine and
* pm_runtime_get_noresume() in its remove routine.
*/
ret = pm_runtime_get_sync(dev);
if (ret < 0)
goto out;
if (func->card->host->caps & MMC_CAP_POWER_OFF_CARD) {
ret = pm_runtime_get_sync(dev);
if (ret < 0)
goto out;
}
/* Set the default block size so the driver is sure it's something
* sensible. */
@ -151,7 +154,8 @@ static int sdio_bus_probe(struct device *dev)
return 0;
disable_runtimepm:
pm_runtime_put_noidle(dev);
if (func->card->host->caps & MMC_CAP_POWER_OFF_CARD)
pm_runtime_put_noidle(dev);
out:
return ret;
}
@ -160,12 +164,14 @@ static int sdio_bus_remove(struct device *dev)
{
struct sdio_driver *drv = to_sdio_driver(dev->driver);
struct sdio_func *func = dev_to_sdio_func(dev);
int ret;
int ret = 0;
/* Make sure card is powered before invoking ->remove() */
ret = pm_runtime_get_sync(dev);
if (ret < 0)
goto out;
if (func->card->host->caps & MMC_CAP_POWER_OFF_CARD) {
ret = pm_runtime_get_sync(dev);
if (ret < 0)
goto out;
}
drv->remove(func);
@ -178,10 +184,12 @@ static int sdio_bus_remove(struct device *dev)
}
/* First, undo the increment made directly above */
pm_runtime_put_noidle(dev);
if (func->card->host->caps & MMC_CAP_POWER_OFF_CARD)
pm_runtime_put_noidle(dev);
/* Then undo the runtime PM settings in sdio_bus_probe() */
pm_runtime_put_noidle(dev);
if (func->card->host->caps & MMC_CAP_POWER_OFF_CARD)
pm_runtime_put_noidle(dev);
out:
return ret;
@ -191,6 +199,8 @@ out:
static int sdio_bus_pm_prepare(struct device *dev)
{
struct sdio_func *func = dev_to_sdio_func(dev);
/*
* Resume an SDIO device which was suspended at run time at this
* point, in order to allow standard SDIO suspend/resume paths
@ -212,7 +222,8 @@ static int sdio_bus_pm_prepare(struct device *dev)
* since there is little point in failing system suspend if a
* device can't be resumed.
*/
pm_runtime_resume(dev);
if (func->card->host->caps & MMC_CAP_POWER_OFF_CARD)
pm_runtime_resume(dev);
return 0;
}

2
drivers/mmc/host/omap_hsmmc.c
Просмотреть файл

@ -1002,7 +1002,7 @@ static inline void omap_hsmmc_reset_controller_fsm(struct omap_hsmmc_host *host,
* Monitor a 0->1 transition first
*/
if (mmc_slot(host).features & HSMMC_HAS_UPDATED_RESET) {
while ((!(OMAP_HSMMC_READ(host, SYSCTL) & bit))
while ((!(OMAP_HSMMC_READ(host->base, SYSCTL) & bit))
&& (i++ < limit))
cpu_relax();
}

12
drivers/mmc/host/sdhci-esdhc-imx.c
Просмотреть файл

@ -17,6 +17,7 @@
#include <linux/clk.h>
#include <linux/mmc/host.h>
#include <linux/mmc/sdhci-pltfm.h>
#include <mach/hardware.h>
#include "sdhci.h"
#include "sdhci-pltfm.h"
#include "sdhci-esdhc.h"
@ -112,6 +113,13 @@ static int esdhc_pltfm_init(struct sdhci_host *host, struct sdhci_pltfm_data *pd
clk_enable(clk);
pltfm_host->clk = clk;
if (cpu_is_mx35() || cpu_is_mx51())
host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL;
/* Fix errata ENGcm07207 which is present on i.MX25 and i.MX35 */
if (cpu_is_mx25() || cpu_is_mx35())
host->quirks |= SDHCI_QUIRK_NO_MULTIBLOCK;
return 0;
}
@ -133,10 +141,8 @@ static struct sdhci_ops sdhci_esdhc_ops = {
};
struct sdhci_pltfm_data sdhci_esdhc_imx_pdata = {
.quirks = ESDHC_DEFAULT_QUIRKS | SDHCI_QUIRK_NO_MULTIBLOCK
| SDHCI_QUIRK_BROKEN_ADMA,
.quirks = ESDHC_DEFAULT_QUIRKS | SDHCI_QUIRK_BROKEN_ADMA,
/* ADMA has issues. Might be fixable */
/* NO_MULTIBLOCK might be MX35 only (Errata: ENGcm07207) */
.ops = &sdhci_esdhc_ops,
.init = esdhc_pltfm_init,
.exit = esdhc_pltfm_exit,

31
drivers/mmc/host/sdhci-pci.c
Просмотреть файл

@ -149,11 +149,11 @@ static const struct sdhci_pci_fixes sdhci_cafe = {
* ADMA operation is disabled for Moorestown platform due to
* hardware bugs.
*/
static int mrst_hc1_probe(struct sdhci_pci_chip *chip)
static int mrst_hc_probe(struct sdhci_pci_chip *chip)
{
/*
* slots number is fixed here for MRST as SDIO3 is never used and has
* hardware bugs.
* slots number is fixed here for MRST as SDIO3/5 are never used and
* have hardware bugs.
*/
chip->num_slots = 1;
return 0;
@ -163,9 +163,9 @@ static const struct sdhci_pci_fixes sdhci_intel_mrst_hc0 = {
.quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
};
static const struct sdhci_pci_fixes sdhci_intel_mrst_hc1 = {
static const struct sdhci_pci_fixes sdhci_intel_mrst_hc1_hc2 = {
.quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
.probe = mrst_hc1_probe,
.probe = mrst_hc_probe,
};
static const struct sdhci_pci_fixes sdhci_intel_mfd_sd = {
@ -538,7 +538,15 @@ static const struct pci_device_id pci_ids[] __devinitdata = {
.device = PCI_DEVICE_ID_INTEL_MRST_SD1,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.driver_data = (kernel_ulong_t)&sdhci_intel_mrst_hc1,
.driver_data = (kernel_ulong_t)&sdhci_intel_mrst_hc1_hc2,
},
{
.vendor = PCI_VENDOR_ID_INTEL,
.device = PCI_DEVICE_ID_INTEL_MRST_SD2,
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.driver_data = (kernel_ulong_t)&sdhci_intel_mrst_hc1_hc2,
},
{
@ -637,6 +645,7 @@ static int sdhci_pci_suspend (struct pci_dev *pdev, pm_message_t state)
{
struct sdhci_pci_chip *chip;
struct sdhci_pci_slot *slot;
mmc_pm_flag_t slot_pm_flags;
mmc_pm_flag_t pm_flags = 0;
int i, ret;
@ -657,7 +666,11 @@ static int sdhci_pci_suspend (struct pci_dev *pdev, pm_message_t state)
return ret;
}
pm_flags |= slot->host->mmc->pm_flags;
slot_pm_flags = slot->host->mmc->pm_flags;
if (slot_pm_flags & MMC_PM_WAKE_SDIO_IRQ)
sdhci_enable_irq_wakeups(slot->host);
pm_flags |= slot_pm_flags;
}
if (chip->fixes && chip->fixes->suspend) {
@ -671,8 +684,10 @@ static int sdhci_pci_suspend (struct pci_dev *pdev, pm_message_t state)
pci_save_state(pdev);
if (pm_flags & MMC_PM_KEEP_POWER) {
if (pm_flags & MMC_PM_WAKE_SDIO_IRQ)
if (pm_flags & MMC_PM_WAKE_SDIO_IRQ) {
pci_pme_active(pdev, true);
pci_enable_wake(pdev, PCI_D3hot, 1);
}
pci_set_power_state(pdev, PCI_D3hot);
} else {
pci_enable_wake(pdev, pci_choose_state(pdev, state), 0);

4
drivers/mmc/host/sdhci-pxa.c
Просмотреть файл

@ -141,6 +141,10 @@ static int __devinit sdhci_pxa_probe(struct platform_device *pdev)
if (pdata->quirks)
host->quirks |= pdata->quirks;
/* If slot design supports 8 bit data, indicate this to MMC. */
if (pdata->flags & PXA_FLAG_SD_8_BIT_CAPABLE_SLOT)
host->mmc->caps |= MMC_CAP_8_BIT_DATA;
ret = sdhci_add_host(host);
if (ret) {
dev_err(&pdev->dev, "failed to add host\n");

54
drivers/mmc/host/sdhci.c
Просмотреть файл

@ -1185,18 +1185,32 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
if (host->ops->platform_send_init_74_clocks)
host->ops->platform_send_init_74_clocks(host, ios->power_mode);
/*
* If your platform has 8-bit width support but is not a v3 controller,
* or if it requires special setup code, you should implement that in
* platform_8bit_width().
*/
if (host->ops->platform_8bit_width)
host->ops->platform_8bit_width(host, ios->bus_width);
else {
ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
if (ios->bus_width == MMC_BUS_WIDTH_8) {
ctrl &= ~SDHCI_CTRL_4BITBUS;
if (host->version >= SDHCI_SPEC_300)
ctrl |= SDHCI_CTRL_8BITBUS;
} else {
if (host->version >= SDHCI_SPEC_300)
ctrl &= ~SDHCI_CTRL_8BITBUS;
if (ios->bus_width == MMC_BUS_WIDTH_4)
ctrl |= SDHCI_CTRL_4BITBUS;
else
ctrl &= ~SDHCI_CTRL_4BITBUS;
}
sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
}
ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
if (ios->bus_width == MMC_BUS_WIDTH_8)
ctrl |= SDHCI_CTRL_8BITBUS;
else
ctrl &= ~SDHCI_CTRL_8BITBUS;
if (ios->bus_width == MMC_BUS_WIDTH_4)
ctrl |= SDHCI_CTRL_4BITBUS;
else
ctrl &= ~SDHCI_CTRL_4BITBUS;
if ((ios->timing == MMC_TIMING_SD_HS ||
ios->timing == MMC_TIMING_MMC_HS)
&& !(host->quirks & SDHCI_QUIRK_NO_HISPD_BIT))
@ -1681,6 +1695,16 @@ int sdhci_resume_host(struct sdhci_host *host)
EXPORT_SYMBOL_GPL(sdhci_resume_host);
void sdhci_enable_irq_wakeups(struct sdhci_host *host)
{
u8 val;
val = sdhci_readb(host, SDHCI_WAKE_UP_CONTROL);
val |= SDHCI_WAKE_ON_INT;
sdhci_writeb(host, val, SDHCI_WAKE_UP_CONTROL);
}
EXPORT_SYMBOL_GPL(sdhci_enable_irq_wakeups);
#endif /* CONFIG_PM */
/*****************************************************************************\
@ -1845,11 +1869,19 @@ int sdhci_add_host(struct sdhci_host *host)
mmc->f_min = host->max_clk / SDHCI_MAX_DIV_SPEC_300;
else
mmc->f_min = host->max_clk / SDHCI_MAX_DIV_SPEC_200;
mmc->f_max = host->max_clk;
mmc->caps |= MMC_CAP_SDIO_IRQ;
/*
* A controller may support 8-bit width, but the board itself
* might not have the pins brought out. Boards that support
* 8-bit width must set "mmc->caps |= MMC_CAP_8_BIT_DATA;" in
* their platform code before calling sdhci_add_host(), and we
* won't assume 8-bit width for hosts without that CAP.
*/
if (!(host->quirks & SDHCI_QUIRK_FORCE_1_BIT_DATA))
mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA;
mmc->caps |= MMC_CAP_4_BIT_DATA;
if (caps & SDHCI_CAN_DO_HISPD)
mmc->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED;

9
drivers/mmc/host/sdhci.h
Просмотреть файл

@ -76,7 +76,7 @@
#define SDHCI_CTRL_ADMA1 0x08
#define SDHCI_CTRL_ADMA32 0x10
#define SDHCI_CTRL_ADMA64 0x18
#define SDHCI_CTRL_8BITBUS 0x20
#define SDHCI_CTRL_8BITBUS 0x20
#define SDHCI_POWER_CONTROL 0x29
#define SDHCI_POWER_ON 0x01
@ -87,6 +87,9 @@
#define SDHCI_BLOCK_GAP_CONTROL 0x2A
#define SDHCI_WAKE_UP_CONTROL 0x2B
#define SDHCI_WAKE_ON_INT 0x01
#define SDHCI_WAKE_ON_INSERT 0x02
#define SDHCI_WAKE_ON_REMOVE 0x04
#define SDHCI_CLOCK_CONTROL 0x2C
#define SDHCI_DIVIDER_SHIFT 8
@ -152,6 +155,7 @@
#define SDHCI_CLOCK_BASE_SHIFT 8
#define SDHCI_MAX_BLOCK_MASK 0x00030000
#define SDHCI_MAX_BLOCK_SHIFT 16
#define SDHCI_CAN_DO_8BIT 0x00040000
#define SDHCI_CAN_DO_ADMA2 0x00080000
#define SDHCI_CAN_DO_ADMA1 0x00100000
#define SDHCI_CAN_DO_HISPD 0x00200000
@ -212,6 +216,8 @@ struct sdhci_ops {
unsigned int (*get_max_clock)(struct sdhci_host *host);
unsigned int (*get_min_clock)(struct sdhci_host *host);
unsigned int (*get_timeout_clock)(struct sdhci_host *host);
int (*platform_8bit_width)(struct sdhci_host *host,
int width);
void (*platform_send_init_74_clocks)(struct sdhci_host *host,
u8 power_mode);
unsigned int (*get_ro)(struct sdhci_host *host);
@ -317,6 +323,7 @@ extern void sdhci_remove_host(struct sdhci_host *host, int dead);
#ifdef CONFIG_PM
extern int sdhci_suspend_host(struct sdhci_host *host, pm_message_t state);
extern int sdhci_resume_host(struct sdhci_host *host);
extern void sdhci_enable_irq_wakeups(struct sdhci_host *host);
#endif
#endif /* __SDHCI_HW_H */

30
drivers/mmc/host/ushc.c
Просмотреть файл

@ -425,7 +425,7 @@ static int ushc_probe(struct usb_interface *intf, const struct usb_device_id *id
struct usb_device *usb_dev = interface_to_usbdev(intf);
struct mmc_host *mmc;
struct ushc_data *ushc;
int ret = -ENOMEM;
int ret;
mmc = mmc_alloc_host(sizeof(struct ushc_data), &intf->dev);
if (mmc == NULL)
@ -462,11 +462,15 @@ static int ushc_probe(struct usb_interface *intf, const struct usb_device_id *id
mmc->max_blk_count = 511;
ushc->int_urb = usb_alloc_urb(0, GFP_KERNEL);
if (ushc->int_urb == NULL)
if (ushc->int_urb == NULL) {
ret = -ENOMEM;
goto err;
}
ushc->int_data = kzalloc(sizeof(struct ushc_int_data), GFP_KERNEL);
if (ushc->int_data == NULL)
if (ushc->int_data == NULL) {
ret = -ENOMEM;
goto err;
}
usb_fill_int_urb(ushc->int_urb, ushc->usb_dev,
usb_rcvintpipe(usb_dev,
intf->cur_altsetting->endpoint[0].desc.bEndpointAddress),
@ -475,11 +479,15 @@ static int ushc_probe(struct usb_interface *intf, const struct usb_device_id *id
intf->cur_altsetting->endpoint[0].desc.bInterval);
ushc->cbw_urb = usb_alloc_urb(0, GFP_KERNEL);
if (ushc->cbw_urb == NULL)
if (ushc->cbw_urb == NULL) {
ret = -ENOMEM;
goto err;
}
ushc->cbw = kzalloc(sizeof(struct ushc_cbw), GFP_KERNEL);
if (ushc->cbw == NULL)
if (ushc->cbw == NULL) {
ret = -ENOMEM;
goto err;
}
ushc->cbw->signature = USHC_CBW_SIGNATURE;
usb_fill_bulk_urb(ushc->cbw_urb, ushc->usb_dev, usb_sndbulkpipe(usb_dev, 2),
@ -487,15 +495,21 @@ static int ushc_probe(struct usb_interface *intf, const struct usb_device_id *id
cbw_callback, ushc);
ushc->data_urb = usb_alloc_urb(0, GFP_KERNEL);
if (ushc->data_urb == NULL)
if (ushc->data_urb == NULL) {
ret = -ENOMEM;
goto err;
}
ushc->csw_urb = usb_alloc_urb(0, GFP_KERNEL);
if (ushc->csw_urb == NULL)
if (ushc->csw_urb == NULL) {
ret = -ENOMEM;
goto err;
}
ushc->csw = kzalloc(sizeof(struct ushc_cbw), GFP_KERNEL);
if (ushc->csw == NULL)
if (ushc->csw == NULL) {
ret = -ENOMEM;
goto err;
}
usb_fill_bulk_urb(ushc->csw_urb, ushc->usb_dev, usb_rcvbulkpipe(usb_dev, 6),
ushc->csw, sizeof(struct ushc_csw),
csw_callback, ushc);

16
drivers/mtd/ubi/scan.c
Просмотреть файл

@ -787,16 +787,15 @@ static int check_corruption(struct ubi_device *ubi, struct ubi_vid_hdr *vid_hdr,
* erased, so it became unstable and corrupted, and should be
* erased.
*/
return 0;
err = 0;
goto out_unlock;
}
if (err)
return err;
goto out_unlock;
if (ubi_check_pattern(ubi->peb_buf1, 0xFF, ubi->leb_size)) {
mutex_unlock(&ubi->buf_mutex);
return 0;
}
if (ubi_check_pattern(ubi->peb_buf1, 0xFF, ubi->leb_size))
goto out_unlock;
ubi_err("PEB %d contains corrupted VID header, and the data does not "
"contain all 0xFF, this may be a non-UBI PEB or a severe VID "
@ -806,8 +805,11 @@ static int check_corruption(struct ubi_device *ubi, struct ubi_vid_hdr *vid_hdr,
pnum, ubi->leb_start, ubi->leb_size);
ubi_dbg_print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,
ubi->peb_buf1, ubi->leb_size, 1);
err = 1;
out_unlock:
mutex_unlock(&ubi->buf_mutex);
return 1;
return err;
}
/**

6
drivers/net/Kconfig
Просмотреть файл

@ -2543,10 +2543,10 @@ config PCH_GBE
depends on PCI
select MII
---help---
This is a gigabit ethernet driver for Topcliff PCH.
Topcliff PCH is the platform controller hub that is used in Intel's
This is a gigabit ethernet driver for EG20T PCH.
EG20T PCH is the platform controller hub that is used in Intel's
general embedded platform.
Topcliff PCH has Gigabit Ethernet interface.
EG20T PCH has Gigabit Ethernet interface.
Using this interface, it is able to access system devices connected
to Gigabit Ethernet.
This driver enables Gigabit Ethernet function.

10
drivers/net/au1000_eth.c
Просмотреть файл

@ -155,10 +155,10 @@ static void au1000_enable_mac(struct net_device *dev, int force_reset)
spin_lock_irqsave(&aup->lock, flags);
if (force_reset || (!aup->mac_enabled)) {
writel(MAC_EN_CLOCK_ENABLE, &aup->enable);
writel(MAC_EN_CLOCK_ENABLE, aup->enable);
au_sync_delay(2);
writel((MAC_EN_RESET0 | MAC_EN_RESET1 | MAC_EN_RESET2
| MAC_EN_CLOCK_ENABLE), &aup->enable);
| MAC_EN_CLOCK_ENABLE), aup->enable);
au_sync_delay(2);
aup->mac_enabled = 1;
@ -503,9 +503,9 @@ static void au1000_reset_mac_unlocked(struct net_device *dev)
au1000_hard_stop(dev);
writel(MAC_EN_CLOCK_ENABLE, &aup->enable);
writel(MAC_EN_CLOCK_ENABLE, aup->enable);
au_sync_delay(2);
writel(0, &aup->enable);
writel(0, aup->enable);
au_sync_delay(2);
aup->tx_full = 0;
@ -1119,7 +1119,7 @@ static int __devinit au1000_probe(struct platform_device *pdev)
/* set a random MAC now in case platform_data doesn't provide one */
random_ether_addr(dev->dev_addr);
writel(0, &aup->enable);
writel(0, aup->enable);
aup->mac_enabled = 0;
pd = pdev->dev.platform_data;

73
drivers/net/cxgb4vf/cxgb4vf_main.c
Просмотреть файл

@ -816,40 +816,48 @@ static struct net_device_stats *cxgb4vf_get_stats(struct net_device *dev)
}
/*
* Collect up to maxaddrs worth of a netdevice's unicast addresses into an
* array of addrss pointers and return the number collected.
* Collect up to maxaddrs worth of a netdevice's unicast addresses, starting
* at a specified offset within the list, into an array of addrss pointers and
* return the number collected.
*/
static inline int collect_netdev_uc_list_addrs(const struct net_device *dev,
const u8 **addr,
unsigned int maxaddrs)
static inline unsigned int collect_netdev_uc_list_addrs(const struct net_device *dev,
const u8 **addr,
unsigned int offset,
unsigned int maxaddrs)
{
unsigned int index = 0;
unsigned int naddr = 0;
const struct netdev_hw_addr *ha;
for_each_dev_addr(dev, ha) {
addr[naddr++] = ha->addr;
if (naddr >= maxaddrs)
break;
}
for_each_dev_addr(dev, ha)
if (index++ >= offset) {
addr[naddr++] = ha->addr;
if (naddr >= maxaddrs)
break;
}
return naddr;
}
/*
* Collect up to maxaddrs worth of a netdevice's multicast addresses into an
* array of addrss pointers and return the number collected.
* Collect up to maxaddrs worth of a netdevice's multicast addresses, starting
* at a specified offset within the list, into an array of addrss pointers and
* return the number collected.
*/
static inline int collect_netdev_mc_list_addrs(const struct net_device *dev,
const u8 **addr,
unsigned int maxaddrs)
static inline unsigned int collect_netdev_mc_list_addrs(const struct net_device *dev,
const u8 **addr,
unsigned int offset,
unsigned int maxaddrs)
{
unsigned int index = 0;
unsigned int naddr = 0;
const struct netdev_hw_addr *ha;
netdev_for_each_mc_addr(ha, dev) {
addr[naddr++] = ha->addr;
if (naddr >= maxaddrs)
break;
}
netdev_for_each_mc_addr(ha, dev)
if (index++ >= offset) {
addr[naddr++] = ha->addr;
if (naddr >= maxaddrs)
break;
}
return naddr;
}
@ -862,16 +870,20 @@ static int set_addr_filters(const struct net_device *dev, bool sleep)
u64 mhash = 0;
u64 uhash = 0;
bool free = true;
u16 filt_idx[7];
unsigned int offset, naddr;
const u8 *addr[7];
int ret, naddr = 0;
int ret;
const struct port_info *pi = netdev_priv(dev);
/* first do the secondary unicast addresses */
naddr = collect_netdev_uc_list_addrs(dev, addr, ARRAY_SIZE(addr));
if (naddr > 0) {
for (offset = 0; ; offset += naddr) {
naddr = collect_netdev_uc_list_addrs(dev, addr, offset,
ARRAY_SIZE(addr));
if (naddr == 0)
break;
ret = t4vf_alloc_mac_filt(pi->adapter, pi->viid, free,
naddr, addr, filt_idx, &uhash, sleep);
naddr, addr, NULL, &uhash, sleep);
if (ret < 0)
return ret;
@ -879,12 +891,17 @@ static int set_addr_filters(const struct net_device *dev, bool sleep)
}
/* next set up the multicast addresses */
naddr = collect_netdev_mc_list_addrs(dev, addr, ARRAY_SIZE(addr));
if (naddr > 0) {
for (offset = 0; ; offset += naddr) {
naddr = collect_netdev_mc_list_addrs(dev, addr, offset,
ARRAY_SIZE(addr));
if (naddr == 0)
break;
ret = t4vf_alloc_mac_filt(pi->adapter, pi->viid, free,
naddr, addr, filt_idx, &mhash, sleep);
naddr, addr, NULL, &mhash, sleep);
if (ret < 0)
return ret;
free = false;
}
return t4vf_set_addr_hash(pi->adapter, pi->viid, uhash != 0,

94
drivers/net/cxgb4vf/t4vf_hw.c
Просмотреть файл

@ -1014,48 +1014,72 @@ int t4vf_alloc_mac_filt(struct adapter *adapter, unsigned int viid, bool free,
unsigned int naddr, const u8 **addr, u16 *idx,
u64 *hash, bool sleep_ok)
{
int i, ret;
int offset, ret = 0;
unsigned nfilters = 0;
unsigned int rem = naddr;
struct fw_vi_mac_cmd cmd, rpl;
struct fw_vi_mac_exact *p;
size_t len16;
if (naddr > ARRAY_SIZE(cmd.u.exact))
if (naddr > FW_CLS_TCAM_NUM_ENTRIES)
return -EINVAL;
len16 = DIV_ROUND_UP(offsetof(struct fw_vi_mac_cmd,
u.exact[naddr]), 16);
memset(&cmd, 0, sizeof(cmd));
cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_VI_MAC_CMD) |
FW_CMD_REQUEST |
FW_CMD_WRITE |
(free ? FW_CMD_EXEC : 0) |
FW_VI_MAC_CMD_VIID(viid));
cmd.freemacs_to_len16 = cpu_to_be32(FW_VI_MAC_CMD_FREEMACS(free) |
FW_CMD_LEN16(len16));
for (offset = 0; offset < naddr; /**/) {
unsigned int fw_naddr = (rem < ARRAY_SIZE(cmd.u.exact)
? rem
: ARRAY_SIZE(cmd.u.exact));
size_t len16 = DIV_ROUND_UP(offsetof(struct fw_vi_mac_cmd,
u.exact[fw_naddr]), 16);
struct fw_vi_mac_exact *p;
int i;
for (i = 0, p = cmd.u.exact; i < naddr; i++, p++) {
p->valid_to_idx =
cpu_to_be16(FW_VI_MAC_CMD_VALID |
FW_VI_MAC_CMD_IDX(FW_VI_MAC_ADD_MAC));
memcpy(p->macaddr, addr[i], sizeof(p->macaddr));
memset(&cmd, 0, sizeof(cmd));
cmd.op_to_viid = cpu_to_be32(FW_CMD_OP(FW_VI_MAC_CMD) |
FW_CMD_REQUEST |
FW_CMD_WRITE |
(free ? FW_CMD_EXEC : 0) |
FW_VI_MAC_CMD_VIID(viid));
cmd.freemacs_to_len16 =
cpu_to_be32(FW_VI_MAC_CMD_FREEMACS(free) |
FW_CMD_LEN16(len16));
for (i = 0, p = cmd.u.exact; i < fw_naddr; i++, p++) {
p->valid_to_idx = cpu_to_be16(
FW_VI_MAC_CMD_VALID |
FW_VI_MAC_CMD_IDX(FW_VI_MAC_ADD_MAC));
memcpy(p->macaddr, addr[offset+i], sizeof(p->macaddr));
}
ret = t4vf_wr_mbox_core(adapter, &cmd, sizeof(cmd), &rpl,
sleep_ok);
if (ret && ret != -ENOMEM)
break;
for (i = 0, p = rpl.u.exact; i < fw_naddr; i++, p++) {
u16 index = FW_VI_MAC_CMD_IDX_GET(
be16_to_cpu(p->valid_to_idx));
if (idx)
idx[offset+i] =
(index >= FW_CLS_TCAM_NUM_ENTRIES
? 0xffff
: index);
if (index < FW_CLS_TCAM_NUM_ENTRIES)
nfilters++;
else if (hash)
*hash |= (1ULL << hash_mac_addr(addr[offset+i]));
}
free = false;
offset += fw_naddr;
rem -= fw_naddr;
}
ret = t4vf_wr_mbox_core(adapter, &cmd, sizeof(cmd), &rpl, sleep_ok);
if (ret)
return ret;
for (i = 0, p = rpl.u.exact; i < naddr; i++, p++) {
u16 index = FW_VI_MAC_CMD_IDX_GET(be16_to_cpu(p->valid_to_idx));
if (idx)
idx[i] = (index >= FW_CLS_TCAM_NUM_ENTRIES
? 0xffff
: index);
if (index < FW_CLS_TCAM_NUM_ENTRIES)
ret++;
else if (hash)
*hash |= (1 << hash_mac_addr(addr[i]));
}
/*
* If there were no errors or we merely ran out of room in our MAC
* address arena, return the number of filters actually written.
*/
if (ret == 0 || ret == -ENOMEM)
ret = nfilters;
return ret;
}

18
drivers/net/ehea/ehea_main.c
Просмотреть файл

@ -400,6 +400,7 @@ static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
skb_arr_rq1[index] = netdev_alloc_skb(dev,
EHEA_L_PKT_SIZE);
if (!skb_arr_rq1[index]) {
ehea_info("Unable to allocate enough skb in the array\n");
pr->rq1_skba.os_skbs = fill_wqes - i;
break;
}
@ -422,13 +423,20 @@ static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
struct net_device *dev = pr->port->netdev;
int i;
for (i = 0; i < pr->rq1_skba.len; i++) {
if (nr_rq1a > pr->rq1_skba.len) {
ehea_error("NR_RQ1A bigger than skb array len\n");
return;
}
for (i = 0; i < nr_rq1a; i++) {
skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
if (!skb_arr_rq1[i])
if (!skb_arr_rq1[i]) {
ehea_info("No enough memory to allocate skb array\n");
break;
}
}
/* Ring doorbell */
ehea_update_rq1a(pr->qp, nr_rq1a);
ehea_update_rq1a(pr->qp, i);
}
static int ehea_refill_rq_def(struct ehea_port_res *pr,
@ -735,8 +743,10 @@ static int ehea_proc_rwqes(struct net_device *dev,
skb = netdev_alloc_skb(dev,
EHEA_L_PKT_SIZE);
if (!skb)
if (!skb) {
ehea_info("Not enough memory to allocate skb\n");
break;
}
}
skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
cqe->num_bytes_transfered - 4);

6
drivers/net/pch_gbe/pch_gbe_main.c
Просмотреть файл

@ -1,6 +1,6 @@
/*
* Copyright (C) 1999 - 2010 Intel Corporation.
* Copyright (C) 2010 OKI SEMICONDUCTOR Co., LTD.
* Copyright (C) 2010 OKI SEMICONDUCTOR CO., LTD.
*
* This code was derived from the Intel e1000e Linux driver.
*
@ -2464,8 +2464,8 @@ static void __exit pch_gbe_exit_module(void)
module_init(pch_gbe_init_module);
module_exit(pch_gbe_exit_module);
MODULE_DESCRIPTION("OKI semiconductor PCH Gigabit ethernet Driver");
MODULE_AUTHOR("OKI semiconductor, <masa-korg@dsn.okisemi.com>");
MODULE_DESCRIPTION("EG20T PCH Gigabit ethernet Driver");
MODULE_AUTHOR("OKI SEMICONDUCTOR, <toshiharu-linux@dsn.okisemi.com>");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_VERSION);
MODULE_DEVICE_TABLE(pci, pch_gbe_pcidev_id);

8
drivers/net/pch_gbe/pch_gbe_param.c
Просмотреть файл

@ -434,8 +434,8 @@ void pch_gbe_check_options(struct pch_gbe_adapter *adapter)
.err = "using default of "
__MODULE_STRING(PCH_GBE_DEFAULT_TXD),
.def = PCH_GBE_DEFAULT_TXD,
.arg = { .r = { .min = PCH_GBE_MIN_TXD } },
.arg = { .r = { .max = PCH_GBE_MAX_TXD } }
.arg = { .r = { .min = PCH_GBE_MIN_TXD,
.max = PCH_GBE_MAX_TXD } }
};
struct pch_gbe_tx_ring *tx_ring = adapter->tx_ring;
tx_ring->count = TxDescriptors;
@ -450,8 +450,8 @@ void pch_gbe_check_options(struct pch_gbe_adapter *adapter)
.err = "using default of "
__MODULE_STRING(PCH_GBE_DEFAULT_RXD),
.def = PCH_GBE_DEFAULT_RXD,
.arg = { .r = { .min = PCH_GBE_MIN_RXD } },
.arg = { .r = { .max = PCH_GBE_MAX_RXD } }
.arg = { .r = { .min = PCH_GBE_MIN_RXD,
.max = PCH_GBE_MAX_RXD } }
};
struct pch_gbe_rx_ring *rx_ring = adapter->rx_ring;
rx_ring->count = RxDescriptors;

43
drivers/net/ppp_generic.c
Просмотреть файл

@ -2584,16 +2584,16 @@ ppp_create_interface(struct net *net, int unit, int *retp)
*/
dev_net_set(dev, net);
ret = -EEXIST;
mutex_lock(&pn->all_ppp_mutex);
if (unit < 0) {
unit = unit_get(&pn->units_idr, ppp);
if (unit < 0) {
*retp = unit;
ret = unit;
goto out2;
}
} else {
ret = -EEXIST;
if (unit_find(&pn->units_idr, unit))
goto out2; /* unit already exists */
/*
@ -2668,10 +2668,10 @@ static void ppp_shutdown_interface(struct ppp *ppp)
ppp->closing = 1;
ppp_unlock(ppp);
unregister_netdev(ppp->dev);
unit_put(&pn->units_idr, ppp->file.index);
} else
ppp_unlock(ppp);
unit_put(&pn->units_idr, ppp->file.index);
ppp->file.dead = 1;
ppp->owner = NULL;
wake_up_interruptible(&ppp->file.rwait);
@ -2859,8 +2859,7 @@ static void __exit ppp_cleanup(void)
* by holding all_ppp_mutex
*/
/* associate pointer with specified number */
static int unit_set(struct idr *p, void *ptr, int n)
static int __unit_alloc(struct idr *p, void *ptr, int n)
{
int unit, err;
@ -2871,10 +2870,24 @@ again:
}
err = idr_get_new_above(p, ptr, n, &unit);
if (err == -EAGAIN)
goto again;
if (err < 0) {
if (err == -EAGAIN)
goto again;
return err;
}
if (unit != n) {
return unit;
}
/* associate pointer with specified number */
static int unit_set(struct idr *p, void *ptr, int n)
{
int unit;
unit = __unit_alloc(p, ptr, n);
if (unit < 0)
return unit;
else if (unit != n) {
idr_remove(p, unit);
return -EINVAL;
}
@ -2885,19 +2898,7 @@ again:
/* get new free unit number and associate pointer with it */
static int unit_get(struct idr *p, void *ptr)
{
int unit, err;
again:
if (!idr_pre_get(p, GFP_KERNEL)) {
printk(KERN_ERR "PPP: No free memory for idr\n");
return -ENOMEM;
}
err = idr_get_new_above(p, ptr, 0, &unit);
if (err == -EAGAIN)
goto again;
return unit;
return __unit_alloc(p, ptr, 0);
}
/* put unit number back to a pool */

3
drivers/net/ucc_geth.h
Просмотреть файл

@ -899,7 +899,8 @@ struct ucc_geth_hardware_statistics {
#define UCC_GETH_UTFS_INIT 512 /* Tx virtual FIFO size
*/
#define UCC_GETH_UTFET_INIT 256 /* 1/2 utfs */
#define UCC_GETH_UTFTT_INIT 512
#define UCC_GETH_UTFTT_INIT 256 /* 1/2 utfs
due to errata */
/* Gigabit Ethernet (1000 Mbps) */
#define UCC_GETH_URFS_GIGA_INIT 4096/*2048*/ /* Rx virtual
FIFO size */

10
drivers/net/usb/hso.c
Просмотреть файл

@ -2994,12 +2994,14 @@ static int hso_probe(struct usb_interface *interface,
case HSO_INTF_BULK:
/* It's a regular bulk interface */
if (((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) &&
!disable_net)
hso_dev = hso_create_net_device(interface, port_spec);
else
if ((port_spec & HSO_PORT_MASK) == HSO_PORT_NETWORK) {
if (!disable_net)
hso_dev =
hso_create_net_device(interface, port_spec);
} else {
hso_dev =
hso_create_bulk_serial_device(interface, port_spec);
}
if (!hso_dev)
goto exit;
break;

11
drivers/net/wan/x25_asy.c
Просмотреть файл

@ -498,7 +498,6 @@ norbuff:
static int x25_asy_close(struct net_device *dev)
{
struct x25_asy *sl = netdev_priv(dev);
int err;
spin_lock(&sl->lock);
if (sl->tty)
@ -507,10 +506,6 @@ static int x25_asy_close(struct net_device *dev)
netif_stop_queue(dev);
sl->rcount = 0;
sl->xleft = 0;
err = lapb_unregister(dev);
if (err != LAPB_OK)
printk(KERN_ERR "x25_asy_close: lapb_unregister error -%d\n",
err);
spin_unlock(&sl->lock);
return 0;
}
@ -595,6 +590,7 @@ static int x25_asy_open_tty(struct tty_struct *tty)
static void x25_asy_close_tty(struct tty_struct *tty)
{
struct x25_asy *sl = tty->disc_data;
int err;
/* First make sure we're connected. */
if (!sl || sl->magic != X25_ASY_MAGIC)
@ -605,6 +601,11 @@ static void x25_asy_close_tty(struct tty_struct *tty)
dev_close(sl->dev);
rtnl_unlock();
err = lapb_unregister(sl->dev);
if (err != LAPB_OK)
printk(KERN_ERR "x25_asy_close: lapb_unregister error -%d\n",
err);
tty->disc_data = NULL;
sl->tty = NULL;
x25_asy_free(sl);

2
drivers/net/wireless/ath/ath9k/recv.c
Просмотреть файл

@ -518,7 +518,7 @@ bool ath_stoprecv(struct ath_softc *sc)
bool stopped;
spin_lock_bh(&sc->rx.rxbuflock);
ath9k_hw_stoppcurecv(ah);
ath9k_hw_abortpcurecv(ah);
ath9k_hw_setrxfilter(ah, 0);
stopped = ath9k_hw_stopdmarecv(ah);

2
drivers/net/wireless/ath/carl9170/main.c
Просмотреть файл

@ -647,7 +647,7 @@ init:
}
unlock:
if (err && (vif_id != -1)) {
if (err && (vif_id >= 0)) {
vif_priv->active = false;
bitmap_release_region(&ar->vif_bitmap, vif_id, 0);
ar->vifs--;

1
drivers/net/wireless/b43/sdio.c
Просмотреть файл

@ -163,6 +163,7 @@ static int b43_sdio_probe(struct sdio_func *func,
err_free_ssb:
kfree(sdio);
err_disable_func:
sdio_claim_host(func);
sdio_disable_func(func);
err_release_host:
sdio_release_host(func);

2
drivers/s390/cio/qdio_thinint.c
Просмотреть файл

@ -292,8 +292,8 @@ void qdio_shutdown_thinint(struct qdio_irq *irq_ptr)
return;
/* reset adapter interrupt indicators */
put_indicator(irq_ptr->dsci);
set_subchannel_ind(irq_ptr, 1);
put_indicator(irq_ptr->dsci);
}
void __exit tiqdio_unregister_thinints(void)

1
drivers/ssb/b43_pci_bridge.c
Просмотреть файл

@ -24,6 +24,7 @@ static const struct pci_device_id b43_pci_bridge_tbl[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4312) },
{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4315) },
{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4318) },
{ PCI_DEVICE(PCI_VENDOR_ID_BCM_GVC, 0x4318) },
{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4319) },
{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4320) },
{ PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, 0x4321) },

5
drivers/vhost/net.c
Просмотреть файл

@ -129,8 +129,9 @@ static void handle_tx(struct vhost_net *net)
size_t hdr_size;
struct socket *sock;
sock = rcu_dereference_check(vq->private_data,
lockdep_is_held(&vq->mutex));
/* TODO: check that we are running from vhost_worker?
* Not sure it's worth it, it's straight-forward enough. */
sock = rcu_dereference_check(vq->private_data, 1);
if (!sock)
return;

15
fs/btrfs/compression.c
Просмотреть файл

@ -91,23 +91,10 @@ static inline int compressed_bio_size(struct btrfs_root *root,
static struct bio *compressed_bio_alloc(struct block_device *bdev,
u64 first_byte, gfp_t gfp_flags)
{
struct bio *bio;
int nr_vecs;
nr_vecs = bio_get_nr_vecs(bdev);
bio = bio_alloc(gfp_flags, nr_vecs);
if (bio == NULL && (current->flags & PF_MEMALLOC)) {
while (!bio && (nr_vecs /= 2))
bio = bio_alloc(gfp_flags, nr_vecs);
}
if (bio) {
bio->bi_size = 0;
bio->bi_bdev = bdev;
bio->bi_sector = first_byte >> 9;
}
return bio;
return btrfs_bio_alloc(bdev, first_byte >> 9, nr_vecs, gfp_flags);
}
static int check_compressed_csum(struct inode *inode,

6
fs/btrfs/ctree.h
Просмотреть файл

@ -808,9 +808,9 @@ struct btrfs_block_group_cache {
int extents_thresh;
int free_extents;
int total_bitmaps;
int ro:1;
int dirty:1;
int iref:1;
unsigned int ro:1;
unsigned int dirty:1;
unsigned int iref:1;
int disk_cache_state;

38
fs/btrfs/disk-io.c
Просмотреть файл

@ -28,6 +28,7 @@
#include <linux/freezer.h>
#include <linux/crc32c.h>
#include <linux/slab.h>
#include <linux/migrate.h>
#include "compat.h"
#include "ctree.h"
#include "disk-io.h"
@ -355,6 +356,8 @@ static int csum_dirty_buffer(struct btrfs_root *root, struct page *page)
ret = btree_read_extent_buffer_pages(root, eb, start + PAGE_CACHE_SIZE,
btrfs_header_generation(eb));
BUG_ON(ret);
WARN_ON(!btrfs_header_flag(eb, BTRFS_HEADER_FLAG_WRITTEN));
found_start = btrfs_header_bytenr(eb);
if (found_start != start) {
WARN_ON(1);
@ -693,6 +696,29 @@ static int btree_submit_bio_hook(struct inode *inode, int rw, struct bio *bio,
__btree_submit_bio_done);
}
static int btree_migratepage(struct address_space *mapping,
struct page *newpage, struct page *page)
{
/*
* we can't safely write a btree page from here,
* we haven't done the locking hook
*/
if (PageDirty(page))
return -EAGAIN;
/*
* Buffers may be managed in a filesystem specific way.
* We must have no buffers or drop them.
*/
if (page_has_private(page) &&
!try_to_release_page(page, GFP_KERNEL))
return -EAGAIN;
#ifdef CONFIG_MIGRATION
return migrate_page(mapping, newpage, page);
#else
return -ENOSYS;
#endif
}
static int btree_writepage(struct page *page, struct writeback_control *wbc)
{
struct extent_io_tree *tree;
@ -707,8 +733,7 @@ static int btree_writepage(struct page *page, struct writeback_control *wbc)
}
redirty_page_for_writepage(wbc, page);
eb = btrfs_find_tree_block(root, page_offset(page),
PAGE_CACHE_SIZE);
eb = btrfs_find_tree_block(root, page_offset(page), PAGE_CACHE_SIZE);
WARN_ON(!eb);
was_dirty = test_and_set_bit(EXTENT_BUFFER_DIRTY, &eb->bflags);
@ -799,6 +824,9 @@ static const struct address_space_operations btree_aops = {
.releasepage = btree_releasepage,
.invalidatepage = btree_invalidatepage,
.sync_page = block_sync_page,
#ifdef CONFIG_MIGRATION
.migratepage = btree_migratepage,
#endif
};
int readahead_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize,
@ -1538,10 +1566,8 @@ struct btrfs_root *open_ctree(struct super_block *sb,
GFP_NOFS);
struct btrfs_root *csum_root = kzalloc(sizeof(struct btrfs_root),
GFP_NOFS);
struct btrfs_root *tree_root = kzalloc(sizeof(struct btrfs_root),
GFP_NOFS);
struct btrfs_fs_info *fs_info = kzalloc(sizeof(*fs_info),
GFP_NOFS);
struct btrfs_root *tree_root = btrfs_sb(sb);
struct btrfs_fs_info *fs_info = tree_root->fs_info;
struct btrfs_root *chunk_root = kzalloc(sizeof(struct btrfs_root),
GFP_NOFS);
struct btrfs_root *dev_root = kzalloc(sizeof(struct btrfs_root),

76
fs/btrfs/export.c
Просмотреть файл

@ -232,9 +232,85 @@ fail:
return ERR_PTR(ret);
}
static int btrfs_get_name(struct dentry *parent, char *name,
struct dentry *child)
{
struct inode *inode = child->d_inode;
struct inode *dir = parent->d_inode;
struct btrfs_path *path;
struct btrfs_root *root = BTRFS_I(dir)->root;
struct btrfs_inode_ref *iref;
struct btrfs_root_ref *rref;
struct extent_buffer *leaf;
unsigned long name_ptr;
struct btrfs_key key;
int name_len;
int ret;
if (!dir || !inode)
return -EINVAL;
if (!S_ISDIR(dir->i_mode))
return -EINVAL;
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
path->leave_spinning = 1;
if (inode->i_ino == BTRFS_FIRST_FREE_OBJECTID) {
key.objectid = BTRFS_I(inode)->root->root_key.objectid;
key.type = BTRFS_ROOT_BACKREF_KEY;
key.offset = (u64)-1;
root = root->fs_info->tree_root;
} else {
key.objectid = inode->i_ino;
key.offset = dir->i_ino;
key.type = BTRFS_INODE_REF_KEY;
}
ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
if (ret < 0) {
btrfs_free_path(path);
return ret;
} else if (ret > 0) {
if (inode->i_ino == BTRFS_FIRST_FREE_OBJECTID) {
path->slots[0]--;
} else {
btrfs_free_path(path);
return -ENOENT;
}
}
leaf = path->nodes[0];
if (inode->i_ino == BTRFS_FIRST_FREE_OBJECTID) {
rref = btrfs_item_ptr(leaf, path->slots[0],
struct btrfs_root_ref);
name_ptr = (unsigned long)(rref + 1);
name_len = btrfs_root_ref_name_len(leaf, rref);
} else {
iref = btrfs_item_ptr(leaf, path->slots[0],
struct btrfs_inode_ref);
name_ptr = (unsigned long)(iref + 1);
name_len = btrfs_inode_ref_name_len(leaf, iref);
}
read_extent_buffer(leaf, name, name_ptr, name_len);
btrfs_free_path(path);
/*
* have to add the null termination to make sure that reconnect_path
* gets the right len for strlen
*/
name[name_len] = '\0';
return 0;
}
const struct export_operations btrfs_export_ops = {
.encode_fh = btrfs_encode_fh,
.fh_to_dentry = btrfs_fh_to_dentry,
.fh_to_parent = btrfs_fh_to_parent,
.get_parent = btrfs_get_parent,
.get_name = btrfs_get_name,
};

2
fs/btrfs/extent-tree.c
Просмотреть файл

@ -3412,7 +3412,7 @@ again:
* our reservation.
*/
if (unused <= space_info->total_bytes) {
unused -= space_info->total_bytes;
unused = space_info->total_bytes - unused;
if (unused >= num_bytes) {
if (!reserved)
space_info->bytes_reserved += orig_bytes;

77
fs/btrfs/extent_io.c
Просмотреть файл

@ -1828,9 +1828,9 @@ static void end_bio_extent_preparewrite(struct bio *bio, int err)
bio_put(bio);
}
static struct bio *
extent_bio_alloc(struct block_device *bdev, u64 first_sector, int nr_vecs,
gfp_t gfp_flags)
struct bio *
btrfs_bio_alloc(struct block_device *bdev, u64 first_sector, int nr_vecs,
gfp_t gfp_flags)
{
struct bio *bio;
@ -1919,7 +1919,7 @@ static int submit_extent_page(int rw, struct extent_io_tree *tree,
else
nr = bio_get_nr_vecs(bdev);
bio = extent_bio_alloc(bdev, sector, nr, GFP_NOFS | __GFP_HIGH);
bio = btrfs_bio_alloc(bdev, sector, nr, GFP_NOFS | __GFP_HIGH);
bio_add_page(bio, page, page_size, offset);
bio->bi_end_io = end_io_func;
@ -2901,21 +2901,53 @@ out:
int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
__u64 start, __u64 len, get_extent_t *get_extent)
{
int ret;
int ret = 0;
u64 off = start;
u64 max = start + len;
u32 flags = 0;
u32 found_type;
u64 last;
u64 disko = 0;
struct btrfs_key found_key;
struct extent_map *em = NULL;
struct extent_state *cached_state = NULL;
struct btrfs_path *path;
struct btrfs_file_extent_item *item;
int end = 0;
u64 em_start = 0, em_len = 0;
unsigned long emflags;
ret = 0;
int hole = 0;
if (len == 0)
return -EINVAL;
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
path->leave_spinning = 1;
ret = btrfs_lookup_file_extent(NULL, BTRFS_I(inode)->root,
path, inode->i_ino, -1, 0);
if (ret < 0) {
btrfs_free_path(path);
return ret;
}
WARN_ON(!ret);
path->slots[0]--;
item = btrfs_item_ptr(path->nodes[0], path->slots[0],
struct btrfs_file_extent_item);
btrfs_item_key_to_cpu(path->nodes[0], &found_key, path->slots[0]);
found_type = btrfs_key_type(&found_key);
/* No extents, just return */
if (found_key.objectid != inode->i_ino ||
found_type != BTRFS_EXTENT_DATA_KEY) {
btrfs_free_path(path);
return 0;
}
last = found_key.offset;
btrfs_free_path(path);
lock_extent_bits(&BTRFS_I(inode)->io_tree, start, start + len, 0,
&cached_state, GFP_NOFS);
em = get_extent(inode, NULL, 0, off, max - off, 0);
@ -2925,11 +2957,18 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
ret = PTR_ERR(em);
goto out;
}
while (!end) {
hole = 0;
off = em->start + em->len;
if (off >= max)
end = 1;
if (em->block_start == EXTENT_MAP_HOLE) {
hole = 1;
goto next;
}
em_start = em->start;
em_len = em->len;
@ -2939,8 +2978,6 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
if (em->block_start == EXTENT_MAP_LAST_BYTE) {
end = 1;
flags |= FIEMAP_EXTENT_LAST;
} else if (em->block_start == EXTENT_MAP_HOLE) {
flags |= FIEMAP_EXTENT_UNWRITTEN;
} else if (em->block_start == EXTENT_MAP_INLINE) {
flags |= (FIEMAP_EXTENT_DATA_INLINE |
FIEMAP_EXTENT_NOT_ALIGNED);
@ -2953,10 +2990,10 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
if (test_bit(EXTENT_FLAG_COMPRESSED, &em->flags))
flags |= FIEMAP_EXTENT_ENCODED;
next:
emflags = em->flags;
free_extent_map(em);
em = NULL;
if (!end) {
em = get_extent(inode, NULL, 0, off, max - off, 0);
if (!em)
@ -2967,15 +3004,23 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
}
emflags = em->flags;
}
if (test_bit(EXTENT_FLAG_VACANCY, &emflags)) {
flags |= FIEMAP_EXTENT_LAST;
end = 1;
}
ret = fiemap_fill_next_extent(fieinfo, em_start, disko,
em_len, flags);
if (ret)
goto out_free;
if (em_start == last) {
flags |= FIEMAP_EXTENT_LAST;
end = 1;
}
if (!hole) {
ret = fiemap_fill_next_extent(fieinfo, em_start, disko,
em_len, flags);
if (ret)
goto out_free;
}
}
out_free:
free_extent_map(em);
@ -3836,8 +3881,10 @@ int try_release_extent_buffer(struct extent_io_tree *tree, struct page *page)
spin_lock(&tree->buffer_lock);
eb = radix_tree_lookup(&tree->buffer, start >> PAGE_CACHE_SHIFT);
if (!eb)
goto out;
if (!eb) {
spin_unlock(&tree->buffer_lock);
return ret;
}
if (test_bit(EXTENT_BUFFER_DIRTY, &eb->bflags)) {
ret = 0;

3
fs/btrfs/extent_io.h
Просмотреть файл

@ -310,4 +310,7 @@ int extent_clear_unlock_delalloc(struct inode *inode,
struct extent_io_tree *tree,
u64 start, u64 end, struct page *locked_page,
unsigned long op);
struct bio *
btrfs_bio_alloc(struct block_device *bdev, u64 first_sector, int nr_vecs,
gfp_t gfp_flags);
#endif

7
fs/btrfs/file.c
Просмотреть файл

@ -1047,8 +1047,14 @@ out:
if ((file->f_flags & O_DSYNC) || IS_SYNC(inode)) {
trans = btrfs_start_transaction(root, 0);
if (IS_ERR(trans)) {
num_written = PTR_ERR(trans);
goto done;
}
mutex_lock(&inode->i_mutex);
ret = btrfs_log_dentry_safe(trans, root,
file->f_dentry);
mutex_unlock(&inode->i_mutex);
if (ret == 0) {
ret = btrfs_sync_log(trans, root);
if (ret == 0)
@ -1067,6 +1073,7 @@ out:
(start_pos + num_written - 1) >> PAGE_CACHE_SHIFT);
}
}
done:
current->backing_dev_info = NULL;
return num_written ? num_written : err;
}

294
fs/btrfs/inode.c
Просмотреть файл

@ -4501,6 +4501,7 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans,
BTRFS_I(inode)->index_cnt = 2;
BTRFS_I(inode)->root = root;
BTRFS_I(inode)->generation = trans->transid;
inode->i_generation = BTRFS_I(inode)->generation;
btrfs_set_inode_space_info(root, inode);
if (mode & S_IFDIR)
@ -4622,12 +4623,12 @@ int btrfs_add_link(struct btrfs_trans_handle *trans,
}
static int btrfs_add_nondir(struct btrfs_trans_handle *trans,
struct dentry *dentry, struct inode *inode,
int backref, u64 index)
struct inode *dir, struct dentry *dentry,
struct inode *inode, int backref, u64 index)
{
int err = btrfs_add_link(trans, dentry->d_parent->d_inode,
inode, dentry->d_name.name,
dentry->d_name.len, backref, index);
int err = btrfs_add_link(trans, dir, inode,
dentry->d_name.name, dentry->d_name.len,
backref, index);
if (!err) {
d_instantiate(dentry, inode);
return 0;
@ -4668,8 +4669,7 @@ static int btrfs_mknod(struct inode *dir, struct dentry *dentry,
btrfs_set_trans_block_group(trans, dir);
inode = btrfs_new_inode(trans, root, dir, dentry->d_name.name,
dentry->d_name.len,
dentry->d_parent->d_inode->i_ino, objectid,
dentry->d_name.len, dir->i_ino, objectid,
BTRFS_I(dir)->block_group, mode, &index);
err = PTR_ERR(inode);
if (IS_ERR(inode))
@ -4682,7 +4682,7 @@ static int btrfs_mknod(struct inode *dir, struct dentry *dentry,
}
btrfs_set_trans_block_group(trans, inode);
err = btrfs_add_nondir(trans, dentry, inode, 0, index);
err = btrfs_add_nondir(trans, dir, dentry, inode, 0, index);
if (err)
drop_inode = 1;
else {
@ -4730,10 +4730,8 @@ static int btrfs_create(struct inode *dir, struct dentry *dentry,
btrfs_set_trans_block_group(trans, dir);
inode = btrfs_new_inode(trans, root, dir, dentry->d_name.name,
dentry->d_name.len,
dentry->d_parent->d_inode->i_ino,
objectid, BTRFS_I(dir)->block_group, mode,
&index);
dentry->d_name.len, dir->i_ino, objectid,
BTRFS_I(dir)->block_group, mode, &index);
err = PTR_ERR(inode);
if (IS_ERR(inode))
goto out_unlock;
@ -4745,7 +4743,7 @@ static int btrfs_create(struct inode *dir, struct dentry *dentry,
}
btrfs_set_trans_block_group(trans, inode);
err = btrfs_add_nondir(trans, dentry, inode, 0, index);
err = btrfs_add_nondir(trans, dir, dentry, inode, 0, index);
if (err)
drop_inode = 1;
else {
@ -4787,6 +4785,7 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir,
return -EPERM;
btrfs_inc_nlink(inode);
inode->i_ctime = CURRENT_TIME;
err = btrfs_set_inode_index(dir, &index);
if (err)
@ -4805,15 +4804,17 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir,
btrfs_set_trans_block_group(trans, dir);
ihold(inode);
err = btrfs_add_nondir(trans, dentry, inode, 1, index);
err = btrfs_add_nondir(trans, dir, dentry, inode, 1, index);
if (err) {
drop_inode = 1;
} else {
struct dentry *parent = dget_parent(dentry);
btrfs_update_inode_block_group(trans, dir);
err = btrfs_update_inode(trans, root, inode);
BUG_ON(err);
btrfs_log_new_name(trans, inode, NULL, dentry->d_parent);
btrfs_log_new_name(trans, inode, NULL, parent);
dput(parent);
}
nr = trans->blocks_used;
@ -4853,8 +4854,7 @@ static int btrfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
btrfs_set_trans_block_group(trans, dir);
inode = btrfs_new_inode(trans, root, dir, dentry->d_name.name,
dentry->d_name.len,
dentry->d_parent->d_inode->i_ino, objectid,
dentry->d_name.len, dir->i_ino, objectid,
BTRFS_I(dir)->block_group, S_IFDIR | mode,
&index);
if (IS_ERR(inode)) {
@ -4877,9 +4877,8 @@ static int btrfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
if (err)
goto out_fail;
err = btrfs_add_link(trans, dentry->d_parent->d_inode,
inode, dentry->d_name.name,
dentry->d_name.len, 0, index);
err = btrfs_add_link(trans, dir, inode, dentry->d_name.name,
dentry->d_name.len, 0, index);
if (err)
goto out_fail;
@ -5535,13 +5534,21 @@ struct btrfs_dio_private {
u64 bytes;
u32 *csums;
void *private;
/* number of bios pending for this dio */
atomic_t pending_bios;
/* IO errors */
int errors;
struct bio *orig_bio;
};
static void btrfs_endio_direct_read(struct bio *bio, int err)
{
struct btrfs_dio_private *dip = bio->bi_private;
struct bio_vec *bvec_end = bio->bi_io_vec + bio->bi_vcnt - 1;
struct bio_vec *bvec = bio->bi_io_vec;
struct btrfs_dio_private *dip = bio->bi_private;
struct inode *inode = dip->inode;
struct btrfs_root *root = BTRFS_I(inode)->root;
u64 start;
@ -5595,15 +5602,18 @@ static void btrfs_endio_direct_write(struct bio *bio, int err)
struct btrfs_trans_handle *trans;
struct btrfs_ordered_extent *ordered = NULL;
struct extent_state *cached_state = NULL;
u64 ordered_offset = dip->logical_offset;
u64 ordered_bytes = dip->bytes;
int ret;
if (err)
goto out_done;
ret = btrfs_dec_test_ordered_pending(inode, &ordered,
dip->logical_offset, dip->bytes);
again:
ret = btrfs_dec_test_first_ordered_pending(inode, &ordered,
&ordered_offset,
ordered_bytes);
if (!ret)
goto out_done;
goto out_test;
BUG_ON(!ordered);
@ -5663,8 +5673,20 @@ out_unlock:
out:
btrfs_delalloc_release_metadata(inode, ordered->len);
btrfs_end_transaction(trans, root);
ordered_offset = ordered->file_offset + ordered->len;
btrfs_put_ordered_extent(ordered);
btrfs_put_ordered_extent(ordered);
out_test:
/*
* our bio might span multiple ordered extents. If we haven't
* completed the accounting for the whole dio, go back and try again
*/
if (ordered_offset < dip->logical_offset + dip->bytes) {
ordered_bytes = dip->logical_offset + dip->bytes -
ordered_offset;
goto again;
}
out_done:
bio->bi_private = dip->private;
@ -5684,6 +5706,176 @@ static int __btrfs_submit_bio_start_direct_io(struct inode *inode, int rw,
return 0;
}
static void btrfs_end_dio_bio(struct bio *bio, int err)
{
struct btrfs_dio_private *dip = bio->bi_private;
if (err) {
printk(KERN_ERR "btrfs direct IO failed ino %lu rw %lu "
"disk_bytenr %lu len %u err no %d\n",
dip->inode->i_ino, bio->bi_rw, bio->bi_sector,
bio->bi_size, err);
dip->errors = 1;
/*
* before atomic variable goto zero, we must make sure
* dip->errors is perceived to be set.
*/
smp_mb__before_atomic_dec();
}
/* if there are more bios still pending for this dio, just exit */
if (!atomic_dec_and_test(&dip->pending_bios))
goto out;
if (dip->errors)
bio_io_error(dip->orig_bio);
else {
set_bit(BIO_UPTODATE, &dip->orig_bio->bi_flags);
bio_endio(dip->orig_bio, 0);
}
out:
bio_put(bio);
}
static struct bio *btrfs_dio_bio_alloc(struct block_device *bdev,
u64 first_sector, gfp_t gfp_flags)
{
int nr_vecs = bio_get_nr_vecs(bdev);
return btrfs_bio_alloc(bdev, first_sector, nr_vecs, gfp_flags);
}
static inline int __btrfs_submit_dio_bio(struct bio *bio, struct inode *inode,
int rw, u64 file_offset, int skip_sum,
u32 *csums)
{
int write = rw & REQ_WRITE;
struct btrfs_root *root = BTRFS_I(inode)->root;
int ret;
bio_get(bio);
ret = btrfs_bio_wq_end_io(root->fs_info, bio, 0);
if (ret)
goto err;
if (write && !skip_sum) {
ret = btrfs_wq_submit_bio(root->fs_info,
inode, rw, bio, 0, 0,
file_offset,
__btrfs_submit_bio_start_direct_io,
__btrfs_submit_bio_done);
goto err;
} else if (!skip_sum)
btrfs_lookup_bio_sums_dio(root, inode, bio,
file_offset, csums);
ret = btrfs_map_bio(root, rw, bio, 0, 1);
err:
bio_put(bio);
return ret;
}
static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip,
int skip_sum)
{
struct inode *inode = dip->inode;
struct btrfs_root *root = BTRFS_I(inode)->root;
struct btrfs_mapping_tree *map_tree = &root->fs_info->mapping_tree;
struct bio *bio;
struct bio *orig_bio = dip->orig_bio;
struct bio_vec *bvec = orig_bio->bi_io_vec;
u64 start_sector = orig_bio->bi_sector;
u64 file_offset = dip->logical_offset;
u64 submit_len = 0;
u64 map_length;
int nr_pages = 0;
u32 *csums = dip->csums;
int ret = 0;
bio = btrfs_dio_bio_alloc(orig_bio->bi_bdev, start_sector, GFP_NOFS);
if (!bio)
return -ENOMEM;
bio->bi_private = dip;
bio->bi_end_io = btrfs_end_dio_bio;
atomic_inc(&dip->pending_bios);
map_length = orig_bio->bi_size;
ret = btrfs_map_block(map_tree, READ, start_sector << 9,
&map_length, NULL, 0);
if (ret) {
bio_put(bio);
return -EIO;
}
while (bvec <= (orig_bio->bi_io_vec + orig_bio->bi_vcnt - 1)) {
if (unlikely(map_length < submit_len + bvec->bv_len ||
bio_add_page(bio, bvec->bv_page, bvec->bv_len,
bvec->bv_offset) < bvec->bv_len)) {
/*
* inc the count before we submit the bio so
* we know the end IO handler won't happen before
* we inc the count. Otherwise, the dip might get freed
* before we're done setting it up
*/
atomic_inc(&dip->pending_bios);
ret = __btrfs_submit_dio_bio(bio, inode, rw,
file_offset, skip_sum,
csums);
if (ret) {
bio_put(bio);
atomic_dec(&dip->pending_bios);
goto out_err;
}
if (!skip_sum)
csums = csums + nr_pages;
start_sector += submit_len >> 9;
file_offset += submit_len;
submit_len = 0;
nr_pages = 0;
bio = btrfs_dio_bio_alloc(orig_bio->bi_bdev,
start_sector, GFP_NOFS);
if (!bio)
goto out_err;
bio->bi_private = dip;
bio->bi_end_io = btrfs_end_dio_bio;
map_length = orig_bio->bi_size;
ret = btrfs_map_block(map_tree, READ, start_sector << 9,
&map_length, NULL, 0);
if (ret) {
bio_put(bio);
goto out_err;
}
} else {
submit_len += bvec->bv_len;
nr_pages ++;
bvec++;
}
}
ret = __btrfs_submit_dio_bio(bio, inode, rw, file_offset, skip_sum,
csums);
if (!ret)
return 0;
bio_put(bio);
out_err:
dip->errors = 1;
/*
* before atomic variable goto zero, we must
* make sure dip->errors is perceived to be set.
*/
smp_mb__before_atomic_dec();
if (atomic_dec_and_test(&dip->pending_bios))
bio_io_error(dip->orig_bio);
/* bio_end_io() will handle error, so we needn't return it */
return 0;
}
static void btrfs_submit_direct(int rw, struct bio *bio, struct inode *inode,
loff_t file_offset)
{
@ -5723,36 +5915,18 @@ static void btrfs_submit_direct(int rw, struct bio *bio, struct inode *inode,
dip->disk_bytenr = (u64)bio->bi_sector << 9;
bio->bi_private = dip;
dip->errors = 0;
dip->orig_bio = bio;
atomic_set(&dip->pending_bios, 0);
if (write)
bio->bi_end_io = btrfs_endio_direct_write;
else
bio->bi_end_io = btrfs_endio_direct_read;
ret = btrfs_bio_wq_end_io(root->fs_info, bio, 0);
if (ret)
goto out_err;
if (write && !skip_sum) {
ret = btrfs_wq_submit_bio(BTRFS_I(inode)->root->fs_info,
inode, rw, bio, 0, 0,
dip->logical_offset,
__btrfs_submit_bio_start_direct_io,
__btrfs_submit_bio_done);
if (ret)
goto out_err;
ret = btrfs_submit_direct_hook(rw, dip, skip_sum);
if (!ret)
return;
} else if (!skip_sum)
btrfs_lookup_bio_sums_dio(root, inode, bio,
dip->logical_offset, dip->csums);
ret = btrfs_map_bio(root, rw, bio, 0, 1);
if (ret)
goto out_err;
return;
out_err:
kfree(dip->csums);
kfree(dip);
free_ordered:
/*
* If this is a write, we need to clean up the reserved space and kill
@ -6607,8 +6781,9 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry,
BUG_ON(ret);
if (old_inode->i_ino != BTRFS_FIRST_FREE_OBJECTID) {
btrfs_log_new_name(trans, old_inode, old_dir,
new_dentry->d_parent);
struct dentry *parent = dget_parent(new_dentry);
btrfs_log_new_name(trans, old_inode, old_dir, parent);
dput(parent);
btrfs_end_log_trans(root);
}
out_fail:
@ -6758,8 +6933,7 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry,
btrfs_set_trans_block_group(trans, dir);
inode = btrfs_new_inode(trans, root, dir, dentry->d_name.name,
dentry->d_name.len,
dentry->d_parent->d_inode->i_ino, objectid,
dentry->d_name.len, dir->i_ino, objectid,
BTRFS_I(dir)->block_group, S_IFLNK|S_IRWXUGO,
&index);
err = PTR_ERR(inode);
@ -6773,7 +6947,7 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry,
}
btrfs_set_trans_block_group(trans, inode);
err = btrfs_add_nondir(trans, dentry, inode, 0, index);
err = btrfs_add_nondir(trans, dir, dentry, inode, 0, index);
if (err)
drop_inode = 1;
else {
@ -6844,6 +7018,7 @@ static int __btrfs_prealloc_file_range(struct inode *inode, int mode,
struct btrfs_root *root = BTRFS_I(inode)->root;
struct btrfs_key ins;
u64 cur_offset = start;
u64 i_size;
int ret = 0;
bool own_trans = true;
@ -6885,11 +7060,11 @@ static int __btrfs_prealloc_file_range(struct inode *inode, int mode,
(actual_len > inode->i_size) &&
(cur_offset > inode->i_size)) {
if (cur_offset > actual_len)
i_size_write(inode, actual_len);
i_size = actual_len;
else
i_size_write(inode, cur_offset);
i_size_write(inode, cur_offset);
btrfs_ordered_update_i_size(inode, cur_offset, NULL);
i_size = cur_offset;
i_size_write(inode, i_size);
btrfs_ordered_update_i_size(inode, i_size, NULL);
}
ret = btrfs_update_inode(trans, root, inode);
@ -6943,6 +7118,10 @@ static long btrfs_fallocate(struct inode *inode, int mode,
btrfs_wait_ordered_range(inode, alloc_start, alloc_end - alloc_start);
mutex_lock(&inode->i_mutex);
ret = inode_newsize_ok(inode, alloc_end);
if (ret)
goto out;
if (alloc_start > inode->i_size) {
ret = btrfs_cont_expand(inode, alloc_start);
if (ret)
@ -7139,6 +7318,7 @@ static const struct inode_operations btrfs_symlink_inode_operations = {
.readlink = generic_readlink,
.follow_link = page_follow_link_light,
.put_link = page_put_link,
.getattr = btrfs_getattr,
.permission = btrfs_permission,
.setxattr = btrfs_setxattr,
.getxattr = btrfs_getxattr,

31
fs/btrfs/ioctl.c
Просмотреть файл

@ -233,7 +233,8 @@ static noinline int create_subvol(struct btrfs_root *root,
struct btrfs_inode_item *inode_item;
struct extent_buffer *leaf;
struct btrfs_root *new_root;
struct inode *dir = dentry->d_parent->d_inode;
struct dentry *parent = dget_parent(dentry);
struct inode *dir;
int ret;
int err;
u64 objectid;
@ -242,8 +243,13 @@ static noinline int create_subvol(struct btrfs_root *root,
ret = btrfs_find_free_objectid(NULL, root->fs_info->tree_root,
0, &objectid);
if (ret)
if (ret) {
dput(parent);
return ret;
}
dir = parent->d_inode;
/*
* 1 - inode item
* 2 - refs
@ -251,8 +257,10 @@ static noinline int create_subvol(struct btrfs_root *root,
* 2 - dir items
*/
trans = btrfs_start_transaction(root, 6);
if (IS_ERR(trans))
if (IS_ERR(trans)) {
dput(parent);
return PTR_ERR(trans);
}
leaf = btrfs_alloc_free_block(trans, root, root->leafsize,
0, objectid, NULL, 0, 0, 0);
@ -339,6 +347,7 @@ static noinline int create_subvol(struct btrfs_root *root,
d_instantiate(dentry, btrfs_lookup_dentry(dir, dentry));
fail:
dput(parent);
if (async_transid) {
*async_transid = trans->transid;
err = btrfs_commit_transaction_async(trans, root, 1);
@ -354,6 +363,7 @@ static int create_snapshot(struct btrfs_root *root, struct dentry *dentry,
char *name, int namelen, u64 *async_transid)
{
struct inode *inode;
struct dentry *parent;
struct btrfs_pending_snapshot *pending_snapshot;
struct btrfs_trans_handle *trans;
int ret;
@ -396,7 +406,9 @@ static int create_snapshot(struct btrfs_root *root, struct dentry *dentry,
btrfs_orphan_cleanup(pending_snapshot->snap);
inode = btrfs_lookup_dentry(dentry->d_parent->d_inode, dentry);
parent = dget_parent(dentry);
inode = btrfs_lookup_dentry(parent->d_inode, dentry);
dput(parent);
if (IS_ERR(inode)) {
ret = PTR_ERR(inode);
goto fail;
@ -1669,12 +1681,11 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd,
olen = len = src->i_size - off;
/* if we extend to eof, continue to block boundary */
if (off + len == src->i_size)
len = ((src->i_size + bs-1) & ~(bs-1))
- off;
len = ALIGN(src->i_size, bs) - off;
/* verify the end result is block aligned */
if ((off & (bs-1)) ||
((off + len) & (bs-1)))
if (!IS_ALIGNED(off, bs) || !IS_ALIGNED(off + len, bs) ||
!IS_ALIGNED(destoff, bs))
goto out_unlock;
/* do any pending delalloc/csum calc on src, one way or
@ -1874,8 +1885,8 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd,
* but shouldn't round up the file size
*/
endoff = new_key.offset + datal;
if (endoff > off+olen)
endoff = off+olen;
if (endoff > destoff+olen)
endoff = destoff+olen;
if (endoff > inode->i_size)
btrfs_i_size_write(inode, endoff);

67
fs/btrfs/ordered-data.c
Просмотреть файл

@ -248,6 +248,73 @@ int btrfs_add_ordered_sum(struct inode *inode,
return 0;
}
/*
* this is used to account for finished IO across a given range
* of the file. The IO may span ordered extents. If
* a given ordered_extent is completely done, 1 is returned, otherwise
* 0.
*
* test_and_set_bit on a flag in the struct btrfs_ordered_extent is used
* to make sure this function only returns 1 once for a given ordered extent.
*
* file_offset is updated to one byte past the range that is recorded as
* complete. This allows you to walk forward in the file.
*/
int btrfs_dec_test_first_ordered_pending(struct inode *inode,
struct btrfs_ordered_extent **cached,
u64 *file_offset, u64 io_size)
{
struct btrfs_ordered_inode_tree *tree;
struct rb_node *node;
struct btrfs_ordered_extent *entry = NULL;
int ret;
u64 dec_end;
u64 dec_start;
u64 to_dec;
tree = &BTRFS_I(inode)->ordered_tree;
spin_lock(&tree->lock);
node = tree_search(tree, *file_offset);
if (!node) {
ret = 1;
goto out;
}
entry = rb_entry(node, struct btrfs_ordered_extent, rb_node);
if (!offset_in_entry(entry, *file_offset)) {
ret = 1;
goto out;
}
dec_start = max(*file_offset, entry->file_offset);
dec_end = min(*file_offset + io_size, entry->file_offset +
entry->len);
*file_offset = dec_end;
if (dec_start > dec_end) {
printk(KERN_CRIT "bad ordering dec_start %llu end %llu\n",
(unsigned long long)dec_start,
(unsigned long long)dec_end);
}
to_dec = dec_end - dec_start;
if (to_dec > entry->bytes_left) {
printk(KERN_CRIT "bad ordered accounting left %llu size %llu\n",
(unsigned long long)entry->bytes_left,
(unsigned long long)to_dec);
}
entry->bytes_left -= to_dec;
if (entry->bytes_left == 0)
ret = test_and_set_bit(BTRFS_ORDERED_IO_DONE, &entry->flags);
else
ret = 1;
out:
if (!ret && cached && entry) {
*cached = entry;
atomic_inc(&entry->refs);
}
spin_unlock(&tree->lock);
return ret == 0;
}
/*
* this is used to account for finished IO across a given range
* of the file. The IO should not span ordered extents. If

3
fs/btrfs/ordered-data.h
Просмотреть файл

@ -141,6 +141,9 @@ int btrfs_remove_ordered_extent(struct inode *inode,
int btrfs_dec_test_ordered_pending(struct inode *inode,
struct btrfs_ordered_extent **cached,
u64 file_offset, u64 io_size);
int btrfs_dec_test_first_ordered_pending(struct inode *inode,
struct btrfs_ordered_extent **cached,
u64 *file_offset, u64 io_size);
int btrfs_add_ordered_extent(struct inode *inode, u64 file_offset,
u64 start, u64 len, u64 disk_len, int type);
int btrfs_add_ordered_extent_dio(struct inode *inode, u64 file_offset,

41
fs/btrfs/super.c
Просмотреть файл

@ -244,6 +244,7 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
case Opt_space_cache:
printk(KERN_INFO "btrfs: enabling disk space caching\n");
btrfs_set_opt(info->mount_opt, SPACE_CACHE);
break;
case Opt_clear_cache:
printk(KERN_INFO "btrfs: force clearing of disk cache\n");
btrfs_set_opt(info->mount_opt, CLEAR_CACHE);
@ -562,12 +563,26 @@ static int btrfs_show_options(struct seq_file *seq, struct vfsmount *vfs)
static int btrfs_test_super(struct super_block *s, void *data)
{
struct btrfs_fs_devices *test_fs_devices = data;
struct btrfs_root *test_root = data;
struct btrfs_root *root = btrfs_sb(s);
return root->fs_info->fs_devices == test_fs_devices;
/*
* If this super block is going away, return false as it
* can't match as an existing super block.
*/
if (!atomic_read(&s->s_active))
return 0;
return root->fs_info->fs_devices == test_root->fs_info->fs_devices;
}
static int btrfs_set_super(struct super_block *s, void *data)
{
s->s_fs_info = data;
return set_anon_super(s, data);
}
/*
* Find a superblock for the given device / mount point.
*
@ -581,6 +596,8 @@ static struct dentry *btrfs_mount(struct file_system_type *fs_type, int flags,
struct super_block *s;
struct dentry *root;
struct btrfs_fs_devices *fs_devices = NULL;
struct btrfs_root *tree_root = NULL;
struct btrfs_fs_info *fs_info = NULL;
fmode_t mode = FMODE_READ;
char *subvol_name = NULL;
u64 subvol_objectid = 0;
@ -608,8 +625,24 @@ static struct dentry *btrfs_mount(struct file_system_type *fs_type, int flags,
goto error_close_devices;
}
/*
* Setup a dummy root and fs_info for test/set super. This is because
* we don't actually fill this stuff out until open_ctree, but we need
* it for searching for existing supers, so this lets us do that and
* then open_ctree will properly initialize everything later.
*/
fs_info = kzalloc(sizeof(struct btrfs_fs_info), GFP_NOFS);
tree_root = kzalloc(sizeof(struct btrfs_root), GFP_NOFS);
if (!fs_info || !tree_root) {
error = -ENOMEM;
goto error_close_devices;
}
fs_info->tree_root = tree_root;
fs_info->fs_devices = fs_devices;
tree_root->fs_info = fs_info;
bdev = fs_devices->latest_bdev;
s = sget(fs_type, btrfs_test_super, set_anon_super, fs_devices);
s = sget(fs_type, btrfs_test_super, btrfs_set_super, tree_root);
if (IS_ERR(s))
goto error_s;
@ -675,6 +708,8 @@ error_s:
error = PTR_ERR(s);
error_close_devices:
btrfs_close_devices(fs_devices);
kfree(fs_info);
kfree(tree_root);
error_free_subvol_name:
kfree(subvol_name);
return ERR_PTR(error);

5
fs/btrfs/transaction.c
Просмотреть файл

@ -902,6 +902,7 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
struct btrfs_root *root = pending->root;
struct btrfs_root *parent_root;
struct inode *parent_inode;
struct dentry *parent;
struct dentry *dentry;
struct extent_buffer *tmp;
struct extent_buffer *old;
@ -941,7 +942,8 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
trans->block_rsv = &pending->block_rsv;
dentry = pending->dentry;
parent_inode = dentry->d_parent->d_inode;
parent = dget_parent(dentry);
parent_inode = parent->d_inode;
parent_root = BTRFS_I(parent_inode)->root;
record_root_in_trans(trans, parent_root);
@ -989,6 +991,7 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
parent_inode->i_ino, index,
dentry->d_name.name, dentry->d_name.len);
BUG_ON(ret);
dput(parent);
key.offset = (u64)-1;
pending->snap = btrfs_read_fs_root_no_name(root->fs_info, &key);

21
fs/btrfs/tree-log.c
Просмотреть файл

@ -2869,6 +2869,7 @@ static noinline int check_parent_dirs_for_sync(struct btrfs_trans_handle *trans,
{
int ret = 0;
struct btrfs_root *root;
struct dentry *old_parent = NULL;
/*
* for regular files, if its inode is already on disk, we don't
@ -2910,10 +2911,13 @@ static noinline int check_parent_dirs_for_sync(struct btrfs_trans_handle *trans,
if (IS_ROOT(parent))
break;
parent = parent->d_parent;
parent = dget_parent(parent);
dput(old_parent);
old_parent = parent;
inode = parent->d_inode;
}
dput(old_parent);
out:
return ret;
}
@ -2945,6 +2949,7 @@ int btrfs_log_inode_parent(struct btrfs_trans_handle *trans,
{
int inode_only = exists_only ? LOG_INODE_EXISTS : LOG_INODE_ALL;
struct super_block *sb;
struct dentry *old_parent = NULL;
int ret = 0;
u64 last_committed = root->fs_info->last_trans_committed;
@ -3016,10 +3021,13 @@ int btrfs_log_inode_parent(struct btrfs_trans_handle *trans,
if (IS_ROOT(parent))
break;
parent = parent->d_parent;
parent = dget_parent(parent);
dput(old_parent);
old_parent = parent;
}
ret = 0;
end_trans:
dput(old_parent);
if (ret < 0) {
BUG_ON(ret != -ENOSPC);
root->fs_info->last_trans_log_full_commit = trans->transid;
@ -3039,8 +3047,13 @@ end_no_trans:
int btrfs_log_dentry_safe(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct dentry *dentry)
{
return btrfs_log_inode_parent(trans, root, dentry->d_inode,
dentry->d_parent, 0);
struct dentry *parent = dget_parent(dentry);
int ret;
ret = btrfs_log_inode_parent(trans, root, dentry->d_inode, parent, 0);
dput(parent);
return ret;
}
/*

15
fs/gfs2/quota.c
Просмотреть файл

@ -631,6 +631,7 @@ static int gfs2_adjust_quota(struct gfs2_inode *ip, loff_t loc,
struct fs_disk_quota *fdq)
{
struct inode *inode = &ip->i_inode;
struct gfs2_sbd *sdp = GFS2_SB(inode);
struct address_space *mapping = inode->i_mapping;
unsigned long index = loc >> PAGE_CACHE_SHIFT;
unsigned offset = loc & (PAGE_CACHE_SIZE - 1);
@ -658,11 +659,11 @@ static int gfs2_adjust_quota(struct gfs2_inode *ip, loff_t loc,
qd->qd_qb.qb_value = qp->qu_value;
if (fdq) {
if (fdq->d_fieldmask & FS_DQ_BSOFT) {
qp->qu_warn = cpu_to_be64(fdq->d_blk_softlimit);
qp->qu_warn = cpu_to_be64(fdq->d_blk_softlimit >> sdp->sd_fsb2bb_shift);
qd->qd_qb.qb_warn = qp->qu_warn;
}
if (fdq->d_fieldmask & FS_DQ_BHARD) {
qp->qu_limit = cpu_to_be64(fdq->d_blk_hardlimit);
qp->qu_limit = cpu_to_be64(fdq->d_blk_hardlimit >> sdp->sd_fsb2bb_shift);
qd->qd_qb.qb_limit = qp->qu_limit;
}
}
@ -1497,9 +1498,9 @@ static int gfs2_get_dqblk(struct super_block *sb, int type, qid_t id,
fdq->d_version = FS_DQUOT_VERSION;
fdq->d_flags = (type == QUOTA_USER) ? FS_USER_QUOTA : FS_GROUP_QUOTA;
fdq->d_id = id;
fdq->d_blk_hardlimit = be64_to_cpu(qlvb->qb_limit);
fdq->d_blk_softlimit = be64_to_cpu(qlvb->qb_warn);
fdq->d_bcount = be64_to_cpu(qlvb->qb_value);
fdq->d_blk_hardlimit = be64_to_cpu(qlvb->qb_limit) << sdp->sd_fsb2bb_shift;
fdq->d_blk_softlimit = be64_to_cpu(qlvb->qb_warn) << sdp->sd_fsb2bb_shift;
fdq->d_bcount = be64_to_cpu(qlvb->qb_value) << sdp->sd_fsb2bb_shift;
gfs2_glock_dq_uninit(&q_gh);
out:
@ -1566,10 +1567,10 @@ static int gfs2_set_dqblk(struct super_block *sb, int type, qid_t id,
/* If nothing has changed, this is a no-op */
if ((fdq->d_fieldmask & FS_DQ_BSOFT) &&
(fdq->d_blk_softlimit == be64_to_cpu(qd->qd_qb.qb_warn)))
((fdq->d_blk_softlimit >> sdp->sd_fsb2bb_shift) == be64_to_cpu(qd->qd_qb.qb_warn)))
fdq->d_fieldmask ^= FS_DQ_BSOFT;
if ((fdq->d_fieldmask & FS_DQ_BHARD) &&
(fdq->d_blk_hardlimit == be64_to_cpu(qd->qd_qb.qb_limit)))
((fdq->d_blk_hardlimit >> sdp->sd_fsb2bb_shift) == be64_to_cpu(qd->qd_qb.qb_limit)))
fdq->d_fieldmask ^= FS_DQ_BHARD;
if (fdq->d_fieldmask == 0)
goto out_i;

31
fs/ioprio.c
Просмотреть файл

@ -103,22 +103,15 @@ SYSCALL_DEFINE3(ioprio_set, int, which, int, who, int, ioprio)
}
ret = -ESRCH;
/*
* We want IOPRIO_WHO_PGRP/IOPRIO_WHO_USER to be "atomic",
* so we can't use rcu_read_lock(). See re-copy of ->ioprio
* in copy_process().
*/
read_lock(&tasklist_lock);
rcu_read_lock();
switch (which) {
case IOPRIO_WHO_PROCESS:
rcu_read_lock();
if (!who)
p = current;
else
p = find_task_by_vpid(who);
if (p)
ret = set_task_ioprio(p, ioprio);
rcu_read_unlock();
break;
case IOPRIO_WHO_PGRP:
if (!who)
@ -141,12 +134,7 @@ SYSCALL_DEFINE3(ioprio_set, int, which, int, who, int, ioprio)
break;
do_each_thread(g, p) {
int match;
rcu_read_lock();
match = __task_cred(p)->uid == who;
rcu_read_unlock();
if (!match)
if (__task_cred(p)->uid != who)
continue;
ret = set_task_ioprio(p, ioprio);
if (ret)
@ -160,7 +148,7 @@ free_uid:
ret = -EINVAL;
}
read_unlock(&tasklist_lock);
rcu_read_unlock();
return ret;
}
@ -204,17 +192,15 @@ SYSCALL_DEFINE2(ioprio_get, int, which, int, who)
int ret = -ESRCH;
int tmpio;
read_lock(&tasklist_lock);
rcu_read_lock();
switch (which) {
case IOPRIO_WHO_PROCESS:
rcu_read_lock();
if (!who)
p = current;
else
p = find_task_by_vpid(who);
if (p)
ret = get_task_ioprio(p);
rcu_read_unlock();
break;
case IOPRIO_WHO_PGRP:
if (!who)
@ -241,12 +227,7 @@ SYSCALL_DEFINE2(ioprio_get, int, which, int, who)
break;
do_each_thread(g, p) {
int match;
rcu_read_lock();
match = __task_cred(p)->uid == user->uid;
rcu_read_unlock();
if (!match)
if (__task_cred(p)->uid != user->uid)
continue;
tmpio = get_task_ioprio(p);
if (tmpio < 0)
@ -264,6 +245,6 @@ SYSCALL_DEFINE2(ioprio_get, int, which, int, who)
ret = -EINVAL;
}
read_unlock(&tasklist_lock);
rcu_read_unlock();
return ret;
}

64
fs/nfs/dir.c
Просмотреть файл

@ -162,6 +162,7 @@ struct nfs_cache_array_entry {
u64 cookie;
u64 ino;
struct qstr string;
unsigned char d_type;
};
struct nfs_cache_array {
@ -171,8 +172,6 @@ struct nfs_cache_array {
struct nfs_cache_array_entry array[0];
};
#define MAX_READDIR_ARRAY ((PAGE_SIZE - sizeof(struct nfs_cache_array)) / sizeof(struct nfs_cache_array_entry))
typedef __be32 * (*decode_dirent_t)(struct xdr_stream *, struct nfs_entry *, struct nfs_server *, int);
typedef struct {
struct file *file;
@ -257,13 +256,17 @@ int nfs_readdir_add_to_array(struct nfs_entry *entry, struct page *page)
if (IS_ERR(array))
return PTR_ERR(array);
ret = -ENOSPC;
if (array->size >= MAX_READDIR_ARRAY)
goto out;
cache_entry = &array->array[array->size];
/* Check that this entry lies within the page bounds */
ret = -ENOSPC;
if ((char *)&cache_entry[1] - (char *)page_address(page) > PAGE_SIZE)
goto out;
cache_entry->cookie = entry->prev_cookie;
cache_entry->ino = entry->ino;
cache_entry->d_type = entry->d_type;
ret = nfs_readdir_make_qstr(&cache_entry->string, entry->name, entry->len);
if (ret)
goto out;
@ -466,8 +469,9 @@ int nfs_readdir_page_filler(nfs_readdir_descriptor_t *desc, struct nfs_entry *en
struct xdr_stream stream;
struct xdr_buf buf;
__be32 *ptr = xdr_page;
int status;
struct nfs_cache_array *array;
unsigned int count = 0;
int status;
buf.head->iov_base = xdr_page;
buf.head->iov_len = buflen;
@ -488,6 +492,8 @@ int nfs_readdir_page_filler(nfs_readdir_descriptor_t *desc, struct nfs_entry *en
break;
}
count++;
if (desc->plus == 1)
nfs_prime_dcache(desc->file->f_path.dentry, entry);
@ -496,13 +502,14 @@ int nfs_readdir_page_filler(nfs_readdir_descriptor_t *desc, struct nfs_entry *en
break;
} while (!entry->eof);
if (status == -EBADCOOKIE && entry->eof) {
if (count == 0 || (status == -EBADCOOKIE && entry->eof == 1)) {
array = nfs_readdir_get_array(page);
if (!IS_ERR(array)) {
array->eof_index = array->size;
status = 0;
nfs_readdir_release_array(page);
}
} else
status = PTR_ERR(array);
}
return status;
}
@ -696,21 +703,23 @@ int nfs_do_filldir(nfs_readdir_descriptor_t *desc, void *dirent,
int i = 0;
int res = 0;
struct nfs_cache_array *array = NULL;
unsigned int d_type = DT_UNKNOWN;
struct dentry *dentry = NULL;
array = nfs_readdir_get_array(desc->page);
if (IS_ERR(array))
return PTR_ERR(array);
if (IS_ERR(array)) {
res = PTR_ERR(array);
goto out;
}
for (i = desc->cache_entry_index; i < array->size; i++) {
d_type = DT_UNKNOWN;
struct nfs_cache_array_entry *ent;
res = filldir(dirent, array->array[i].string.name,
array->array[i].string.len, file->f_pos,
nfs_compat_user_ino64(array->array[i].ino), d_type);
if (res < 0)
ent = &array->array[i];
if (filldir(dirent, ent->string.name, ent->string.len,
file->f_pos, nfs_compat_user_ino64(ent->ino),
ent->d_type) < 0) {
desc->eof = 1;
break;
}
file->f_pos++;
desc->cache_entry_index = i;
if (i < (array->size-1))
@ -722,9 +731,8 @@ int nfs_do_filldir(nfs_readdir_descriptor_t *desc, void *dirent,
desc->eof = 1;
nfs_readdir_release_array(desc->page);
out:
cache_page_release(desc);
if (dentry != NULL)
dput(dentry);
dfprintk(DIRCACHE, "NFS: nfs_do_filldir() filling ended @ cookie %Lu; returning = %d\n",
(unsigned long long)*desc->dir_cookie, res);
return res;
@ -759,13 +767,13 @@ int uncached_readdir(nfs_readdir_descriptor_t *desc, void *dirent,
goto out;
}
if (nfs_readdir_xdr_to_array(desc, page, inode) == -1) {
status = -EIO;
goto out_release;
}
desc->page_index = 0;
desc->page = page;
status = nfs_readdir_xdr_to_array(desc, page, inode);
if (status < 0)
goto out_release;
status = nfs_do_filldir(desc, dirent, filldir);
out:
@ -816,14 +824,14 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
res = readdir_search_pagecache(desc);
if (res == -EBADCOOKIE) {
res = 0;
/* This means either end of directory */
if (*desc->dir_cookie && desc->eof == 0) {
/* Or that the server has 'lost' a cookie */
res = uncached_readdir(desc, dirent, filldir);
if (res >= 0)
if (res == 0)
continue;
}
res = 0;
break;
}
if (res == -ETOOSMALL && desc->plus) {
@ -838,10 +846,8 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
break;
res = nfs_do_filldir(desc, dirent, filldir);
if (res < 0) {
res = 0;
if (res < 0)
break;
}
}
out:
nfs_unblock_sillyrename(dentry);

2
fs/nfs/direct.c
Просмотреть файл

@ -867,7 +867,7 @@ static ssize_t nfs_direct_write(struct kiocb *iocb, const struct iovec *iov,
goto out;
nfs_alloc_commit_data(dreq);
if (dreq->commit_data == NULL || count < wsize)
if (dreq->commit_data == NULL || count <= wsize)
sync = NFS_FILE_SYNC;
dreq->inode = inode;

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