A non-periodic clock_event_device and the "jiffies" clock don't mix well:
tick_handle_periodic() can go into an infinite loop.
Currently lguest guests use the jiffies clock when the TSC is
unusable. Instead, make the Host write the current time into the lguest
page on every interrupt. This doesn't cost much but is more precise
and at least as accurate as the jiffies clock. It also gets rid of
the GET_WALLCLOCK hypercall.
Also, delay setting sched_clock until our clock is set up, otherwise
the early printk timestamps can go backwards (not harmful, just ugly).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jason Yeh sent his crashing .config: bzImages made with
CONFIG_RELOCATABLE=y put the relocs where the BSS is expected, and we
crash with unusual results such as:
lguest: unhandled trap 14 at 0xc0122ae1 (0xa9)
Relying on BSS being zero was merely laziness on my part, and
unfortunately, lguest doesn't go through the normal startup path (which
does this in asm).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Make declaration of mach_sched_init match definition
(which is in arch/m68knommu/kernel/setup.c).
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
It is important to only provide the compat_ioctl method
if the downstream de->proc_fops does too, otherwise this
utterly confuses the logic in fs/compat_ioctl.c and we
end up doing the wrong thing.
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Alexey Dobriyan <adobriyan@sw.ru>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
copy_from_user() returns the number of bytes not copied, hence 0 is the
expected output.
axi->mm might not be valid anymore when not equal to current->mm, do not
dereference before checking that - thanks to Al for spotting that.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Tested-by: Steve Grubb <sgrubb@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
#x blocks expansion of macro argument, but it won't do you any
good if it's already been expanded... As it is, RFALSE(cond, ....)
ended up with stringified _expanded_ cond. Real fun when cond contains
something like le32_to_cpu() and you are on a big-endian box...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
... because somebody had added preempt.h -> list.h, resulting in
asm/system.h -> hardirq.h -> preempt.h -> list.h -> asm/system.h on m68k,
with smp_wmb() used in list.h and defined in asm/system.h below the include
of hardirq.h.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6:
[S390] Fix sclp_vt220 error handling.
[S390] cio: Reorganize initialization.
[S390] cio: Make CIO_* macros safe if dbfs are not available.
[S390] cio: Clean up messages.
[S390] Fix IRQ tracing.
[S390] vmur: fix diag14_read.
[S390] Wire up sys_fallocate.
[S390] add types.h include to s390_ext.h
[S390] cio: Remove deprecated rdc/rcd.
[S390] Get rid of new section mismatch warnings.
[S390] sclp: kill unused SCLP config option.
[S390] cio: Remove remains of _ccw_device_get_device_number().
[S390] cio: css_sch_device_register() can be made static.
[S390] Improve __smp_call_function_map.
[S390] Convert to smp_call_function_single.
* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/cooloney/blackfin-2.6:
Input Serio: Blackfin doesnt support I8042 - make sure it doesnt get selected
Blackfin arch: add BF54x I2C/TWI TWI0 driver support
Blackfin On-Chip RTC driver update for supporting BF54x
Blackfin Ethernet MAC driver: fix bug Report returned -ENOMEM upwards (in case L1/uncached memory alloc fails)
Blackfin arch: add error message when IRQ no available
Blackfin arch: Initialize the exception vectors early in the boot process
Blackfin arch: fix a compiling warning about dma-mapping
Blackfin arch: switch to using proper defines this time THREAD_SIZE and PAGE_SIZE instead of just PAGE_SIZE everywhere
Blackfin arch: fix bug which unaligns the init thread's stack and causes the current macro to fail.
Blackfin arch: Load P0 before storing through it
Blackfin arch: fix KGDB bug, dont forget last parameter.
Blackfin arch: add selections for BF544 and BF542
Blackfin arch: use bfin_read_SWRST() now that BF561 provides it
Blackfin arch: setup aliases for some core Core A MMRs
* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
docbook: add pipes, other fixes
blktrace: use cpu_clock() instead of sched_clock()
bsg: Fix build for CONFIG_BLOCK=n
[patch] QUEUE_FLAG_READFULL QUEUE_FLAG_WRITEFULL comment fix
due to CKEN_xxx definition and pxa_set_cken() change, the pxa27x
ac97 cold reset is broken in ASoC, fixed to use bit index instead
of bit mask
Signed-off-by: eric miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
MXC needs the same change as IOP. See [ARM] 4494/1
or commit 7dea1b2006
An undefined reference to elf_hwcap prevents linkage, due
to changes made by f884b1cf57
and d1cbbd6b41
Removing processor.h removes the extern definition of
elf_hwcap, which fixes the link issue, but forgets cpu_relax().
So, instead, we'll call barrier() directly.
Cc: Lennert Buytenhek <kernel@wantstofly.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Ross Wille <wille@freescale.com>
Signed-off-by: Quinn Jensen <quinn.jensen@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This fixes the jornada720.c file :
* ifdef for CONFIG_SA1100_JORNADA720_SSP since we dont want to include anything not selected in menyconfig.
* add documentation for init for future reference
* change platform driver name from jornada720_mcu ->
jornada_ssp.
* change maintainer in file.
Signed-off-by: Kristoffer Ericson <Kristoffer.Ericson@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Include <rdma/...> headers after <asm/...> headers.
Signed-off-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This patch contains changes in mptctl.c to support logging in MPT fusion drivers
The changes are majorly in debug printks, the existing debugprintk are
modified accroding to new debug macros defined in the file mptbdebug.h
signed-off-by: Sathya Prakash <sathya.prakash@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This patch contains changes in mptfc.c, mptlan.c, mptsas.c and mptspi.c to
support logging in MPT fusion drivers.
The changes are majorly in debug printks, the existing debugprintk are
modified accroding to new debug macros defined in the file mptbdebug.h
signed-off-by: Sathya Prakash <sathya.prakash@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
mlx4_mr_alloc() doesn't actually allocate mr (it just initializes the
pointer that the caller passes in), so it shouldn't free it if an
error occurs.
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This patch contains changes in mptscsih.c to support logging in MPT fusion
drivers.
The changes are majorly in debug printks, the existing debugprintk are
modified accroding to new debug macros defined in the file mptbdebug.h
A new sysfs attribute is added to retrieve and modify the debug level.
signed-off-by: Sathya Prakash <sathya.prakash@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This patch contains changes in mptbase.c to support logging in MPT fusion
drivers.
The changes are majorly in debug printks, the existing debugprintk are
modified accroding to new debug macros defined in the file mptbdebug.h
A new module parameter mpt_debug_level is added to pass the debug level as
module parameter.
signed-off-by: Sathya Prakash <sathya.prakash@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This patch adds a new file mptdebug.h in the fusion source directory,
which contains different debug macros. The existing debug macros and
flags are removed from the mptbase.h and Makefile In Kconfig a new
configuration parameter FUSION_LOGGING is added to enable/disable the
logging support during compile time.
signed-off-by: Sathya Prakash <sathya.prakash@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Fix a crash if the driver has to wait for a QP reference to be dropped
when destroying the QP.
Signed-off-by: Ethan Burns <eaburns@iol.unh.edu>
Acked-by: Tom Tucker <tom@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
In sas_smp_get_phy_events() we never test if the call to
alloc_smp_req(RPEL_REQ_SIZE) succeeds or fails. That means we run
the risk of dereferencing a NULL pointer if it does fail. Far
better to test if we got NULL back and in that case return -ENOMEM
just as we already do for the other memory allocation in that
function.
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
BLK_DEV_BSG was added outside of the if BLOCK check, which allows it to
be enabled when CONFIG_BLOCK=n. This leads to many screenlengths of
errors, starting with a parse error on the request_queue_t definition.
Obviously this wasn't intended for CONFIG_BLOCK=n usage, so just move the
option back in to the block.
Caught with a randconfig on sh.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Jens Axboe <jens.axboe@oracle.com>
Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
The patch is *much* smaller than the description. I am attempting to
answer to those that want to understand an issue that was reported in
May this year.
If a Sunrise Lake based card that requires an alternate reset mechanism
is set up to ignore the commanded IOP_RESET it reports 0x00000010
(IOP_RESET ignored) instead of 0x3803000F (use alternate reset mechanism
to reset all cores), and thus the reset platform function decides to
switch to IOP_RESET_ALWAYS because the reset platform function
parameters indicate that we *need* to reset the card. IOP_RESET_ALWAYS
then responds with the 0x3803000F return code, but alas we treat this as
an error instead of using the alternate reset mechanism (put a 0x03 into
the register offset 0x38). The reset fails, but the fact that the
IOP_RESET_ALWAYS command was issued has put the card in a purposeful
shutdown state in preparation for the alternate hardware reset to be
applied. Yuck.
IOP_RESET is ignored in internal production cards, typically to ensure
that we catch all adapter lockup issues without the driver progressing
further, so this would not appear to be a field issue and thus this
patch was destined to be only in the internal Adaptec source tree.
IOP_RESET_ALWAYS is reserved for
kexec/kdump/FirmwareUpdate/AutomatedTestFrames so we did not function as
expected in any case. Also in the past we have had OEMs specifically
request that cards not be resetable after a BlinkLED/FirmwareAssert for
one reason or another and To head off the possibility that the Sunrise
Lake based cards would suffer a similar fate, we propose the enclosed
fix.
Yinghai Lu of SUN had a pre-production card with IOP_RESET disabled when
he reported an issue to the linux kernel list back in May regarding a
kexec problem resulting from this reset being ignore. His fix was to
update the Firmware to one that did not ignore the IOP_RESET. Previous
kernels did not attempt to reset the adapter and that is why it surfaced
as a regression in his hands.
The current list of aacraid based cards that use Sunrise Lake:
9005:0285:9005:02b5 Adaptec 5445
9005:0285:9005:02b6 Adaptec 5805
9005:0285:9005:02b7 Adaptec 5085
9005:0285:9005:02c3 Adaptec 51205
9005:0285:9005:02c4 Adaptec 51605
9005:0285:9005:02ce Adaptec 51245
9005:0285:9005:02cf Adaptec 51645
9005:0285:9005:02d0 Adaptec 52445
9005:0285:9005:02d1 Adaptec 5405
9005:0285:9005:02b8 ICP ICP5445SL
9005:0285:9005:02b9 ICP ICP5085SL
9005:0285:9005:02ba ICP ICP5805SL
9005:0285:9005:02c5 ICP ICP5125SL
9005:0285:9005:02c6 ICP ICP5165SL
9005:0285:108e:7aac SUN STK RAID REM
9005:0285:108e:0286 SUN STK RAID INT
9005:0285:108e:0287 SUN STK RAID EXT
9005:0285:108e:7aae SUN STK RAID EM
All of these are publicly released with IOP_RESET enabled. So there is
no immediate need for this patch.
Signed-off-by: Mark Salyzyn <aacraid@adaptec.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Customer running an application that issues SYNCHRONIZE_CACHE calls
directly noticed the broad stroke of the current implementation in the
aacraid driver resulting in multiple applications feeding I/O to the
storage causing the issuing application to stall for long periods of
time. By only waiting for the current WRITE commands, rather than all
commands, to complete; and those that are in range of the
SYNCHRONIZE_CACHE call that would associate more tightly with the
issuing application before telling the Firmware to flush it's dirty
cache, we managed to reduce the stalling. The Firmware itself still
flushes all the dirty cache associated with the array ignoring the
range, it just does so in a more timely manner.
Signed-off-by: Mark Salyzyn <aacraid@adaptec.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
According to http://bugzilla.kernel.org/show_bug.cgi?id=5953, the
easyRAID returns rubbish to REPORT LUNS.
Cc: Natalie Protasevich <protasnb@gmail.com>
Cc: Hans-Christian Armingeon <mog.johnny@gmx.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
When comparing a pointer, it's clearer to compare it to NULL than to 0.
Signed-off-by: Yoann Padioleau <padator@wanadoo.fr>
Signed-off-by: Tony Luck <tony.luck@intel.com>
b716395e2b added code to handle
a compatability issue with 32bit quota tools, but the new compat
routines are only needed when CONFIG_COMPAT=y (and with this set
to 'n' there are compilation problems since some new typedefs are
not visible).
Reported by Doug Chapman. Fix tuned by a cast of thousands (Andi,
Andreas, Arthur, HPA, Willy)
Signed-off-by: Tony Luck <tony.luck@intel.com>
Forgot to adjust this one with the acpi autoloading patches
in commit 8c8eb78f67
Acked-by: Myron Stowe <myron.stowe@hp.com>
Acked-by: Len Brown <len.brown@intel.com>
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
- Run Lindent
- Move advansys_detect and advansys_release to the end of the file
- Split advansys_board_found out of advansys_detect
- Rename a few variables, such as shp to shost and pci_devp to pdev
- Turn STATIC into static
Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Wide transfers are required for every setting of PPR apart from QAS.
It seems the DV code starts at the minimum, which turns on DT and Wide
regardless of the setting of max_width. Redo the PPR and period
setting routines to respect max_width (i.e. start at period = 10 if it
is zero).
This fixes bugzilla 8366
Acked-by: "Freels, James D." <freelsjd@ornl.gov>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This is a patch to fix 'segmentation fault' issue which was initiated
by Richard Lary <rlary@us.ibm.com>. Thanks again Richard.
- on following sysfs attritute function, changes have made so that both
count and offset input parameters are honored by the functions.
= qla2x00_sysfs_read_nvram()
= qla2x00_sysfs_read_vpd()
- made changes so that NVRAM data to be cached to minimize H/W accesses
during agent querying of the driver's.
Signed-off-by: Seokmann Ju <seokmann.ju@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Minor unimportant cuttings from the floor bundled in with a version
stamp update. Only controversial change is the dropping of Alan Cox
copyright on the nark.c module since that file has no code written by
him in it.
Signed-off-by: Mark Salyzyn <aacraid@adaptec.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
It was found by LSI that on setups with large amounts of memory
we were bouncing buffers when we did not need to. If the iscsi tcp
code touches the data buffer (or a helper does),
it will kmap the buffer. iscsi_tcp also does not interact with hardware,
so it does not have any hw dma restrictions. This patch sets the bounce
buffer settings for our device queue so buffers should not be bounced
because of a driver limit.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
We should not be checking the cmd windown for just handling r2t responses.
And if the window closes in on us, always have scsi-ml requeue the command
from our queuecommand function.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This prevents the iscsi modules from being unloaded while
there are active mounts from an iscsi target.
Signed-off-by: Olaf Kirch <olaf.kirch@oracle.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
When we logout we block the session since we are not taking any more
commands, but when we call remove host we want to make sure any
IO that got queued up and blocked gets failed upwards quickly, so
we unblock the session and fail it.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Also convert to slab_is_available() as an indicator if
get_zeroed_page() will work or not.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
- Localize more of the init calls in init_channel_subsystem().
- Print a warning if init_channel_subsystem() failed.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
- Remove unneeded messages.
- Move some messages into the debug feature.
- Use dev_* where appropriate.
- Use "cio: " prefix consistently.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
If a machine check is pending and the external or I/O interrupt handler
returns to userspace io_mcck_pending is going to call s390_handle_mcck.
Before this happens a call to TRACE_IRQS_ON was already made since we
know that we are going back to userspace and hence interrupts will be
enabled. So there was an indication that interrupts are enabled while
in reality they are still disabled.
s390_handle_mcck will do a local_irq_save/restore pair and confuse
lockdep which later complains about inconsistent irq tracing.
To solve this just call trace_hardirqs_off before calling
s390_handle_mcck and trace_hardirqs_on afterwards.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Record length of spool file must be only stored in 1st SPLINK record
Signed-off-by: Frank Munzert <munzert@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This patch implements support of fallocate system call on s390(x)
platform. A wrapper is added to address the issue which s390 ABI has with
the arguments of this system call.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
The header file for external interrupts uses the _u16 type. Make sure
that _u16 is defined by including linux/types.h. This prevents compile
failures, if asm/s390_ext.h is the first include file.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Roland Dreier
Rusty Russell
Greg Ungerer
David Miller
Peter Zijlstra
Al Viro
Linus Torvalds
Eric Miao
Quinn Jensen
Kristoffer Ericson
Hoang-Nam Nguyen
Prakash, Sathya
Jack Morgenstein
Tom Tucker
Jesper Juhl
Paul Mundt
Salyzyn, Mark
akpm@linux-foundation.org
Yoann Padioleau
Tony Luck
Thomas Renninger
Matthew Wilcox
James Bottomley
Seokmann Ju
Mike Christie
Heiko Carstens
Cornelia Huck
Frank Munzert
Martin Schwidefsky
Christian Borntraeger