From 04d8a9db89f00dee78d792d094dc573784ead643 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Mon, 30 Nov 2009 15:37:25 -0500 Subject: [PATCH 1/4] arch/alpha/kernel/sys_ruffian.c: Use DIV_ROUND_CLOSEST The kernel.h macro DIV_ROUND_CLOSEST performs the computation (x + d/2)/d but is perhaps more readable. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // @haskernel@ @@ @depends on haskernel@ expression x,__divisor; @@ - (((x) + ((__divisor) / 2)) / (__divisor)) + DIV_ROUND_CLOSEST(x,__divisor) // Signed-off-by: Julia Lawall Cc: Ivan Kokshaysky Cc: Richard Henderson Signed-off-by: Matt Turner --- arch/alpha/kernel/sys_ruffian.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/alpha/kernel/sys_ruffian.c b/arch/alpha/kernel/sys_ruffian.c index d9f9cfeb9931..8de1046fe91e 100644 --- a/arch/alpha/kernel/sys_ruffian.c +++ b/arch/alpha/kernel/sys_ruffian.c @@ -66,7 +66,7 @@ ruffian_init_irq(void) common_init_isa_dma(); } -#define RUFFIAN_LATCH ((PIT_TICK_RATE + HZ / 2) / HZ) +#define RUFFIAN_LATCH DIV_ROUND_CLOSEST(PIT_TICK_RATE, HZ) static void __init ruffian_init_rtc(void) From cc9a2c8301683f73b7e0d1fc2cb5159110f3469f Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Mon, 30 Nov 2009 15:38:19 -0500 Subject: [PATCH 2/4] arch/alpha/kernel: Add kmalloc NULL tests Check that the result of kmalloc is not NULL before passing it to other functions. The semantic match that finds this problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // @@ expression *x; identifier f; constant char *C; @@ x = \(kmalloc\|kcalloc\|kzalloc\)(...); ... when != x == NULL when != x != NULL when != (x || ...) ( kfree(x) f(...,C,...,x,...) | *f(...,x,...) | *x->f ) // Signed-off-by: Julia Lawall Cc: Ivan Kokshaysky Cc: Richard Henderson Signed-off-by: Matt Turner --- arch/alpha/kernel/core_marvel.c | 2 ++ arch/alpha/kernel/core_titan.c | 2 ++ 2 files changed, 4 insertions(+) diff --git a/arch/alpha/kernel/core_marvel.c b/arch/alpha/kernel/core_marvel.c index 8e059e58b0ac..53dd2f1a53aa 100644 --- a/arch/alpha/kernel/core_marvel.c +++ b/arch/alpha/kernel/core_marvel.c @@ -1103,6 +1103,8 @@ marvel_agp_info(void) * Allocate the info structure. */ agp = kmalloc(sizeof(*agp), GFP_KERNEL); + if (!agp) + return NULL; /* * Fill it in. diff --git a/arch/alpha/kernel/core_titan.c b/arch/alpha/kernel/core_titan.c index 76686497b1e2..219bf271c0ba 100644 --- a/arch/alpha/kernel/core_titan.c +++ b/arch/alpha/kernel/core_titan.c @@ -757,6 +757,8 @@ titan_agp_info(void) * Allocate the info structure. */ agp = kmalloc(sizeof(*agp), GFP_KERNEL); + if (!agp) + return NULL; /* * Fill it in. From 745dd2405e281d96c0a449103bdf6a895048f28c Mon Sep 17 00:00:00 2001 From: Michael Cree Date: Mon, 30 Nov 2009 22:44:40 -0500 Subject: [PATCH 3/4] Alpha: Rearrange thread info flags fixing two regressions The removal of the TIF_NOTIFY_RESUME flag, commit a583f1b54249b "remove unused TIF_NOTIFY_RESUME flag," resulted in incorrect setting of the unaligned access control flags by the prctl syscall. The re-addition of the TIF_NOTIFY_RESUME flag, commit d0420c83f39f "KEYS: Extend TIF_NOTIFY_RESUME to (almost) all architectures [try #6]" further caused problems, namely incorrect operands to assembler code as evidenced by: AS arch/alpha/kernel/entry.o arch/alpha/kernel/entry.S: Assembler messages: arch/alpha/kernel/entry.S:326: Warning: operand out of range (0x0000000000000406 is not between 0x0000000000000000 and 0x00000000000000ff) Both regressions fixed by (1) rearranging TIF_NOTIFY_RESUME flag to be in lower 8 bits of the thread info flags, and (2) making sure that ALPHA_UAC_SHIFT matches the rearrangement of the thread info flags. Signed-off-by: Michael Cree Cc: Richard Henderson Cc: Ivan Kokshaysky Cc: David Howells , Signed-off-by: Matt Turner --- arch/alpha/include/asm/thread_info.h | 27 +++++++++++++++------------ 1 file changed, 15 insertions(+), 12 deletions(-) diff --git a/arch/alpha/include/asm/thread_info.h b/arch/alpha/include/asm/thread_info.h index 815680b585ed..b3e888638bb7 100644 --- a/arch/alpha/include/asm/thread_info.h +++ b/arch/alpha/include/asm/thread_info.h @@ -61,21 +61,24 @@ register struct thread_info *__current_thread_info __asm__("$8"); /* * Thread information flags: * - these are process state flags and used from assembly - * - pending work-to-be-done flags come first to fit in and immediate operand. + * - pending work-to-be-done flags come first and must be assigned to be + * within bits 0 to 7 to fit in and immediate operand. + * - ALPHA_UAC_SHIFT below must be kept consistent with the unaligned + * control flags. * * TIF_SYSCALL_TRACE is known to be 0 via blbs. */ #define TIF_SYSCALL_TRACE 0 /* syscall trace active */ -#define TIF_SIGPENDING 1 /* signal pending */ -#define TIF_NEED_RESCHED 2 /* rescheduling necessary */ -#define TIF_POLLING_NRFLAG 3 /* poll_idle is polling NEED_RESCHED */ -#define TIF_DIE_IF_KERNEL 4 /* dik recursion lock */ -#define TIF_UAC_NOPRINT 5 /* see sysinfo.h */ -#define TIF_UAC_NOFIX 6 -#define TIF_UAC_SIGBUS 7 -#define TIF_MEMDIE 8 -#define TIF_RESTORE_SIGMASK 9 /* restore signal mask in do_signal */ -#define TIF_NOTIFY_RESUME 10 /* callback before returning to user */ +#define TIF_NOTIFY_RESUME 1 /* callback before returning to user */ +#define TIF_SIGPENDING 2 /* signal pending */ +#define TIF_NEED_RESCHED 3 /* rescheduling necessary */ +#define TIF_POLLING_NRFLAG 8 /* poll_idle is polling NEED_RESCHED */ +#define TIF_DIE_IF_KERNEL 9 /* dik recursion lock */ +#define TIF_UAC_NOPRINT 10 /* see sysinfo.h */ +#define TIF_UAC_NOFIX 11 +#define TIF_UAC_SIGBUS 12 +#define TIF_MEMDIE 13 +#define TIF_RESTORE_SIGMASK 14 /* restore signal mask in do_signal */ #define TIF_FREEZE 16 /* is freezing for suspend */ #define _TIF_SYSCALL_TRACE (1< Date: Mon, 30 Nov 2009 22:51:31 -0500 Subject: [PATCH 4/4] alpha: Fixup last users of irq_chip->typename The typename member of struct irq_chip was kept for migration purposes and is obsolete since more than 2 years. Fix up the leftovers. Signed-off-by: Thomas Gleixner Cc: Richard Henderson Cc: linux-alpha@vger.kernel.org Signed-off-by: Matt Turner --- arch/alpha/kernel/irq.c | 2 +- arch/alpha/kernel/irq_alpha.c | 2 +- arch/alpha/kernel/irq_i8259.c | 2 +- arch/alpha/kernel/irq_pyxis.c | 2 +- arch/alpha/kernel/irq_srm.c | 2 +- arch/alpha/kernel/sys_alcor.c | 2 +- arch/alpha/kernel/sys_cabriolet.c | 2 +- arch/alpha/kernel/sys_dp264.c | 4 ++-- arch/alpha/kernel/sys_eb64p.c | 2 +- arch/alpha/kernel/sys_eiger.c | 2 +- arch/alpha/kernel/sys_jensen.c | 2 +- arch/alpha/kernel/sys_marvel.c | 6 +++--- arch/alpha/kernel/sys_mikasa.c | 2 +- arch/alpha/kernel/sys_noritake.c | 2 +- arch/alpha/kernel/sys_rawhide.c | 2 +- arch/alpha/kernel/sys_rx164.c | 2 +- arch/alpha/kernel/sys_sable.c | 2 +- arch/alpha/kernel/sys_takara.c | 2 +- arch/alpha/kernel/sys_titan.c | 2 +- arch/alpha/kernel/sys_wildfire.c | 2 +- 20 files changed, 23 insertions(+), 23 deletions(-) diff --git a/arch/alpha/kernel/irq.c b/arch/alpha/kernel/irq.c index cc7834661427..c0de072b8305 100644 --- a/arch/alpha/kernel/irq.c +++ b/arch/alpha/kernel/irq.c @@ -92,7 +92,7 @@ show_interrupts(struct seq_file *p, void *v) for_each_online_cpu(j) seq_printf(p, "%10u ", kstat_irqs_cpu(irq, j)); #endif - seq_printf(p, " %14s", irq_desc[irq].chip->typename); + seq_printf(p, " %14s", irq_desc[irq].chip->name); seq_printf(p, " %c%s", (action->flags & IRQF_DISABLED)?'+':' ', action->name); diff --git a/arch/alpha/kernel/irq_alpha.c b/arch/alpha/kernel/irq_alpha.c index 38c805dfc544..cfde865b78e0 100644 --- a/arch/alpha/kernel/irq_alpha.c +++ b/arch/alpha/kernel/irq_alpha.c @@ -228,7 +228,7 @@ struct irqaction timer_irqaction = { }; static struct irq_chip rtc_irq_type = { - .typename = "RTC", + .name = "RTC", .startup = rtc_startup, .shutdown = rtc_enable_disable, .enable = rtc_enable_disable, diff --git a/arch/alpha/kernel/irq_i8259.c b/arch/alpha/kernel/irq_i8259.c index 50bfec9b588f..83a9ac280890 100644 --- a/arch/alpha/kernel/irq_i8259.c +++ b/arch/alpha/kernel/irq_i8259.c @@ -84,7 +84,7 @@ i8259a_end_irq(unsigned int irq) } struct irq_chip i8259a_irq_type = { - .typename = "XT-PIC", + .name = "XT-PIC", .startup = i8259a_startup_irq, .shutdown = i8259a_disable_irq, .enable = i8259a_enable_irq, diff --git a/arch/alpha/kernel/irq_pyxis.c b/arch/alpha/kernel/irq_pyxis.c index 69199a76ec4a..989ce46a0cf3 100644 --- a/arch/alpha/kernel/irq_pyxis.c +++ b/arch/alpha/kernel/irq_pyxis.c @@ -71,7 +71,7 @@ pyxis_mask_and_ack_irq(unsigned int irq) } static struct irq_chip pyxis_irq_type = { - .typename = "PYXIS", + .name = "PYXIS", .startup = pyxis_startup_irq, .shutdown = pyxis_disable_irq, .enable = pyxis_enable_irq, diff --git a/arch/alpha/kernel/irq_srm.c b/arch/alpha/kernel/irq_srm.c index 85229369a1f8..d63e93e1e8bf 100644 --- a/arch/alpha/kernel/irq_srm.c +++ b/arch/alpha/kernel/irq_srm.c @@ -49,7 +49,7 @@ srm_end_irq(unsigned int irq) /* Handle interrupts from the SRM, assuming no additional weirdness. */ static struct irq_chip srm_irq_type = { - .typename = "SRM", + .name = "SRM", .startup = srm_startup_irq, .shutdown = srm_disable_irq, .enable = srm_enable_irq, diff --git a/arch/alpha/kernel/sys_alcor.c b/arch/alpha/kernel/sys_alcor.c index 382035ef7394..20a30b8b9655 100644 --- a/arch/alpha/kernel/sys_alcor.c +++ b/arch/alpha/kernel/sys_alcor.c @@ -90,7 +90,7 @@ alcor_end_irq(unsigned int irq) } static struct irq_chip alcor_irq_type = { - .typename = "ALCOR", + .name = "ALCOR", .startup = alcor_startup_irq, .shutdown = alcor_disable_irq, .enable = alcor_enable_irq, diff --git a/arch/alpha/kernel/sys_cabriolet.c b/arch/alpha/kernel/sys_cabriolet.c index ed349436732b..affd0f3f25df 100644 --- a/arch/alpha/kernel/sys_cabriolet.c +++ b/arch/alpha/kernel/sys_cabriolet.c @@ -72,7 +72,7 @@ cabriolet_end_irq(unsigned int irq) } static struct irq_chip cabriolet_irq_type = { - .typename = "CABRIOLET", + .name = "CABRIOLET", .startup = cabriolet_startup_irq, .shutdown = cabriolet_disable_irq, .enable = cabriolet_enable_irq, diff --git a/arch/alpha/kernel/sys_dp264.c b/arch/alpha/kernel/sys_dp264.c index 46e70ece5176..d64e1e497e76 100644 --- a/arch/alpha/kernel/sys_dp264.c +++ b/arch/alpha/kernel/sys_dp264.c @@ -199,7 +199,7 @@ clipper_set_affinity(unsigned int irq, const struct cpumask *affinity) } static struct irq_chip dp264_irq_type = { - .typename = "DP264", + .name = "DP264", .startup = dp264_startup_irq, .shutdown = dp264_disable_irq, .enable = dp264_enable_irq, @@ -210,7 +210,7 @@ static struct irq_chip dp264_irq_type = { }; static struct irq_chip clipper_irq_type = { - .typename = "CLIPPER", + .name = "CLIPPER", .startup = clipper_startup_irq, .shutdown = clipper_disable_irq, .enable = clipper_enable_irq, diff --git a/arch/alpha/kernel/sys_eb64p.c b/arch/alpha/kernel/sys_eb64p.c index 660c23ef661f..df2090ce5e7f 100644 --- a/arch/alpha/kernel/sys_eb64p.c +++ b/arch/alpha/kernel/sys_eb64p.c @@ -70,7 +70,7 @@ eb64p_end_irq(unsigned int irq) } static struct irq_chip eb64p_irq_type = { - .typename = "EB64P", + .name = "EB64P", .startup = eb64p_startup_irq, .shutdown = eb64p_disable_irq, .enable = eb64p_enable_irq, diff --git a/arch/alpha/kernel/sys_eiger.c b/arch/alpha/kernel/sys_eiger.c index b99ea488d844..3ca1dbcf4044 100644 --- a/arch/alpha/kernel/sys_eiger.c +++ b/arch/alpha/kernel/sys_eiger.c @@ -81,7 +81,7 @@ eiger_end_irq(unsigned int irq) } static struct irq_chip eiger_irq_type = { - .typename = "EIGER", + .name = "EIGER", .startup = eiger_startup_irq, .shutdown = eiger_disable_irq, .enable = eiger_enable_irq, diff --git a/arch/alpha/kernel/sys_jensen.c b/arch/alpha/kernel/sys_jensen.c index ef0b83a070ac..7a7ae36fff91 100644 --- a/arch/alpha/kernel/sys_jensen.c +++ b/arch/alpha/kernel/sys_jensen.c @@ -119,7 +119,7 @@ jensen_local_end(unsigned int irq) } static struct irq_chip jensen_local_irq_type = { - .typename = "LOCAL", + .name = "LOCAL", .startup = jensen_local_startup, .shutdown = jensen_local_shutdown, .enable = jensen_local_enable, diff --git a/arch/alpha/kernel/sys_marvel.c b/arch/alpha/kernel/sys_marvel.c index bbfc4f20ca72..0bb3b5c4f693 100644 --- a/arch/alpha/kernel/sys_marvel.c +++ b/arch/alpha/kernel/sys_marvel.c @@ -170,7 +170,7 @@ marvel_irq_noop_return(unsigned int irq) } static struct irq_chip marvel_legacy_irq_type = { - .typename = "LEGACY", + .name = "LEGACY", .startup = marvel_irq_noop_return, .shutdown = marvel_irq_noop, .enable = marvel_irq_noop, @@ -180,7 +180,7 @@ static struct irq_chip marvel_legacy_irq_type = { }; static struct irq_chip io7_lsi_irq_type = { - .typename = "LSI", + .name = "LSI", .startup = io7_startup_irq, .shutdown = io7_disable_irq, .enable = io7_enable_irq, @@ -190,7 +190,7 @@ static struct irq_chip io7_lsi_irq_type = { }; static struct irq_chip io7_msi_irq_type = { - .typename = "MSI", + .name = "MSI", .startup = io7_startup_irq, .shutdown = io7_disable_irq, .enable = io7_enable_irq, diff --git a/arch/alpha/kernel/sys_mikasa.c b/arch/alpha/kernel/sys_mikasa.c index 4e366641a08e..ee8865169811 100644 --- a/arch/alpha/kernel/sys_mikasa.c +++ b/arch/alpha/kernel/sys_mikasa.c @@ -69,7 +69,7 @@ mikasa_end_irq(unsigned int irq) } static struct irq_chip mikasa_irq_type = { - .typename = "MIKASA", + .name = "MIKASA", .startup = mikasa_startup_irq, .shutdown = mikasa_disable_irq, .enable = mikasa_enable_irq, diff --git a/arch/alpha/kernel/sys_noritake.c b/arch/alpha/kernel/sys_noritake.c index 35753a173bac..86503fe73a88 100644 --- a/arch/alpha/kernel/sys_noritake.c +++ b/arch/alpha/kernel/sys_noritake.c @@ -74,7 +74,7 @@ noritake_end_irq(unsigned int irq) } static struct irq_chip noritake_irq_type = { - .typename = "NORITAKE", + .name = "NORITAKE", .startup = noritake_startup_irq, .shutdown = noritake_disable_irq, .enable = noritake_enable_irq, diff --git a/arch/alpha/kernel/sys_rawhide.c b/arch/alpha/kernel/sys_rawhide.c index f3aec7e085c8..26c322bf89ee 100644 --- a/arch/alpha/kernel/sys_rawhide.c +++ b/arch/alpha/kernel/sys_rawhide.c @@ -136,7 +136,7 @@ rawhide_end_irq(unsigned int irq) } static struct irq_chip rawhide_irq_type = { - .typename = "RAWHIDE", + .name = "RAWHIDE", .startup = rawhide_startup_irq, .shutdown = rawhide_disable_irq, .enable = rawhide_enable_irq, diff --git a/arch/alpha/kernel/sys_rx164.c b/arch/alpha/kernel/sys_rx164.c index fc9246373452..be161129eab9 100644 --- a/arch/alpha/kernel/sys_rx164.c +++ b/arch/alpha/kernel/sys_rx164.c @@ -73,7 +73,7 @@ rx164_end_irq(unsigned int irq) } static struct irq_chip rx164_irq_type = { - .typename = "RX164", + .name = "RX164", .startup = rx164_startup_irq, .shutdown = rx164_disable_irq, .enable = rx164_enable_irq, diff --git a/arch/alpha/kernel/sys_sable.c b/arch/alpha/kernel/sys_sable.c index 426eb6906d01..b2abe27a23cf 100644 --- a/arch/alpha/kernel/sys_sable.c +++ b/arch/alpha/kernel/sys_sable.c @@ -502,7 +502,7 @@ sable_lynx_mask_and_ack_irq(unsigned int irq) } static struct irq_chip sable_lynx_irq_type = { - .typename = "SABLE/LYNX", + .name = "SABLE/LYNX", .startup = sable_lynx_startup_irq, .shutdown = sable_lynx_disable_irq, .enable = sable_lynx_enable_irq, diff --git a/arch/alpha/kernel/sys_takara.c b/arch/alpha/kernel/sys_takara.c index 830318c21661..230464885b5c 100644 --- a/arch/alpha/kernel/sys_takara.c +++ b/arch/alpha/kernel/sys_takara.c @@ -75,7 +75,7 @@ takara_end_irq(unsigned int irq) } static struct irq_chip takara_irq_type = { - .typename = "TAKARA", + .name = "TAKARA", .startup = takara_startup_irq, .shutdown = takara_disable_irq, .enable = takara_enable_irq, diff --git a/arch/alpha/kernel/sys_titan.c b/arch/alpha/kernel/sys_titan.c index 88978fc60f83..288053342c83 100644 --- a/arch/alpha/kernel/sys_titan.c +++ b/arch/alpha/kernel/sys_titan.c @@ -195,7 +195,7 @@ init_titan_irqs(struct irq_chip * ops, int imin, int imax) } static struct irq_chip titan_irq_type = { - .typename = "TITAN", + .name = "TITAN", .startup = titan_startup_irq, .shutdown = titan_disable_irq, .enable = titan_enable_irq, diff --git a/arch/alpha/kernel/sys_wildfire.c b/arch/alpha/kernel/sys_wildfire.c index e91b4c3838a8..62fd972e18ef 100644 --- a/arch/alpha/kernel/sys_wildfire.c +++ b/arch/alpha/kernel/sys_wildfire.c @@ -158,7 +158,7 @@ wildfire_end_irq(unsigned int irq) } static struct irq_chip wildfire_irq_type = { - .typename = "WILDFIRE", + .name = "WILDFIRE", .startup = wildfire_startup_irq, .shutdown = wildfire_disable_irq, .enable = wildfire_enable_irq,