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* sched: Ensure the migration task doesn't go away during usePeter Zijlstra2009-08-02
| | | | | | | | Like sched_migrate_task(), set_cpus_allowed_ptr() should hold onto the migration thread too. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: Add debug check to task_of()Peter Zijlstra2009-08-02
| | | | | | | | | | | | | A frequent mistake appears to be to call task_of() on a scheduler entity that is not actually a task, which can result in a wild pointer. Add a check to catch these mistakes. Suggested-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: Fully integrate cpus_active_map and root-domain codeGregory Haskins2009-08-02
| | | | | | | | | | | | | | | | | | | | | Reflect "active" cpus in the rq->rd->online field, instead of the online_map. The motivation is that things that use the root-domain code (such as cpupri) only care about cpus classified as "active" anyway. By synchronizing the root-domain state with the active map, we allow several optimizations. For instance, we can remove an extra cpumask_and from the scheduler hotpath by utilizing rq->rd->online (since it is now a cached version of cpu_active_map & rq->rd->span). Signed-off-by: Gregory Haskins <ghaskins@novell.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: Max Krasnyansky <maxk@qualcomm.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20090730145723.25226.24493.stgit@dev.haskins.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: Enhance the pre/post scheduling logicGregory Haskins2009-08-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We currently have an explicit "needs_post" vtable method which returns a stack variable for whether we should later run post-schedule. This leads to an awkward exchange of the variable as it bubbles back up out of the context switch. Peter Zijlstra observed that this information could be stored in the run-queue itself instead of handled on the stack. Therefore, we revert to the method of having context_switch return void, and update an internal rq->post_schedule variable when we require further processing. In addition, we fix a race condition where we try to access current->sched_class without holding the rq->lock. This is technically racy, as the sched-class could change out from under us. Instead, we reference the per-rq post_schedule variable with the runqueue unlocked, but with preemption disabled to see if we need to reacquire the rq->lock. Finally, we clean the code up slightly by removing the #ifdef CONFIG_SMP conditionals from the schedule() call, and implement some inline helper functions instead. This patch passes checkpatch, and rt-migrate. Signed-off-by: Gregory Haskins <ghaskins@novell.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20090729150422.17691.55590.stgit@dev.haskins.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: Add new prio to cpupri before removing old prioSteven Rostedt2009-08-02
| | | | | | | | | | | | | | | | | We need to add the new prio to the cpupri accounting before removing the old prio. This is because removing the old prio first will open a race window where the cpu will be removed from pri_active. In this case the cpu will not be visible for RT push and pulls. This could cause a RT task to not migrate appropriately, and create a very large latency. This bug was found with the use of ftrace sched events and trace_printk. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20090729042526.438281019@goodmis.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: Check for pushing rt tasks after all schedulingSteven Rostedt2009-08-02
| | | | | | | | | | | | | | | | The current method for pushing RT tasks after scheduling only happens after a context switch. But we found cases where a task is set up on a run queue to be pushed but the push never happens because the schedule chooses the same task. This bug was found with the help of Gregory Haskins and the use of ftrace (trace_printk). It tooks several days for both of us analyzing the code and the trace output to find this. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20090729042526.205923666@goodmis.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: Optimize unused cgroup configurationPeter Zijlstra2009-08-02
| | | | | | | | When cgroup group scheduling is built in, skip some code paths if we don't have any (but the root) cgroups configured. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* sched: Fix cgroup smp fairnessPeter Zijlstra2009-08-02
| | | | | | | | | | | | | | | | | | | | | | Commit ec4e0e2fe018992d980910db901637c814575914 ("fix inconsistency when redistribute per-cpu tg->cfs_rq shares") broke cgroup smp fairness. In order to avoid starvation of newly placed tasks, we never quite set the share of an empty cpu group-task to 0, but instead we set it as if there's a single NICE-0 task present. If however we actually set this in cfs_rq[cpu]->shares, that means the total shares for that group will be slightly inflated every time we balance, causing the observed unfairness. Fix this by setting cfs_rq[cpu]->shares to 0 but actually setting the effective weight of the related se to the inflated number. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <1248696557.6987.1615.camel@twins> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* Merge branch 'sched/urgent' into sched/coreIngo Molnar2009-08-02
|\ | | | | | | | | | | Merge reason: avoid upcoming patch conflict. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: Fix race in cpupri introduced by cpumask_var changesGregory Haskins2009-08-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Background: Several race conditions in the scheduler have cropped up recently, which Steven and I have tracked down using ftrace. The most recent one turns out to be a race in how the scheduler determines a suitable migration target for RT tasks, introduced recently with commit: commit 68e74568fbe5854952355e942acca51f138096d9 Date: Tue Nov 25 02:35:13 2008 +1030 sched: convert struct cpupri_vec cpumask_var_t. The original design of cpupri allowed lockless readers to quickly determine a best-estimate target. Races between the pri_active bitmap and the vec->mask were handled in the original code because we would detect and return "0" when this occured. The design was predicated on the *effective* atomicity (*) of caching the result of cpus_and() between the cpus_allowed and the vec->mask. Commit 68e74568 changed the behavior such that vec->mask is accessed multiple times. This introduces a subtle race, the result of which means we can have a result that returns "1", but with an empty bitmap. *) yes, we know cpus_and() is not a locked operator across the entire composite array, but it is implicitly atomic on a per-word basis which is all the design required to work. Implementation: Rather than forgoing the lockless design, or reverting to a stack-based cpumask_t, we simply check for when the race has been encountered and continue processing in the event that the race is hit. This renders the removal race as if the priority bit had been atomically cleared as well, and allows the algorithm to execute correctly. Signed-off-by: Gregory Haskins <ghaskins@novell.com> CC: Rusty Russell <rusty@rustcorp.com.au> CC: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20090730145728.25226.92769.stgit@dev.haskins.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * sched: Fix latencytop and sleep profiling vs group schedulingPeter Zijlstra2009-08-02
| | | | | | | | | | | | | | | | | | The latencytop and sleep accounting code assumes that any scheduler entity represents a task, this is not so. Cc: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * Linux 2.6.31-rc5v2.6.31-rc5Linus Torvalds2009-07-31
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| * Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfsLinus Torvalds2009-07-31
| |\ | | | | | | | | | | | | | | | * 'for-linus' of git://oss.sgi.com/xfs/xfs: xfs: bump up nr_to_write in xfs_vm_writepage xfs: reduce bmv_count in xfs_vn_fiemap
| | * xfs: bump up nr_to_write in xfs_vm_writepageEric Sandeen2009-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | VM calculation for nr_to_write seems off. Bump it way up, this gets simple streaming writes zippy again. To be reviewed again after Jens' writeback changes. Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Cc: Chris Mason <chris.mason@oracle.com> Reviewed-by: Felix Blyakher <felixb@sgi.com> Signed-off-by: Felix Blyakher <felixb@sgi.com>
| | * xfs: reduce bmv_count in xfs_vn_fiemapEric Sandeen2009-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 6321e3ed2acf3ee9643cdd403e1c88605d7944ba caused the full bmv_count's worth of getbmapx structures to get allocated; telling it to do MAXEXTNUM was a bit insane, resulting in ENOMEM every time. Chop it down to something reasonable, the number of slots in the caller's input buffer. If this is too large the caller may get ENOMEM but the reason should not be a mystery, and they can try again with something smaller. We add 1 to the value because in the normal getbmap world, bmv_count includes the header and xfs_getbmap does: nex = bmv->bmv_count - 1; if (nex <= 0) return XFS_ERROR(EINVAL); Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Reviewed-by: Olaf Weber <olaf@sgi.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Felix Blyakher <felixb@sgi.com>
| * | Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds2009-07-31
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git.kernel.dk/linux-2.6-block: io context: fix ref counting block: make the end_io functions be non-GPL exports block: fix improper kobject release in blk_integrity_unregister block: always assign default lock to queues mg_disk: Add missing ready status check on mg_write() mg_disk: fix issue with data integrity on error in mg_write() mg_disk: fix reading invalid status when use polling driver mg_disk: remove prohibited sleep operation
| | * | io context: fix ref countingLi Zefan2009-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit d9c7d394a8ebacb60097b192939ae9f15235225e ("block: prevent possible io_context->refcount overflow") mistakenly changed atomic_inc(&ioc->nr_tasks) to atomic_long_inc(&ioc->refcount). Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Nikanth Karthikesan <knikanth@suse.de> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| | * | block: make the end_io functions be non-GPL exportsJens Axboe2009-07-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Prior to the change for more sane end_io functions, we exported the helpers with the normal EXPORT_SYMBOL(). That got changed to _GPL() for the new interface. Revert that particular change, on the basis that this is basic functionality and doesn't dip into internal structures. If these exports can't be non-GPL, then we may as well make EXPORT_SYMBOL() imply GPL for everything. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| | * | block: fix improper kobject release in blk_integrity_unregisterXiaotian Feng2009-07-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | blk_integrity_unregister should use kobject_put to release the kobject, otherwise after bi is freed, memory of bi->kobj->name is leaked. Signed-off-by: Xiaotian Feng <dfeng@redhat.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| | * | block: always assign default lock to queuesJens Axboe2009-07-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the assignment of a default lock below blk_init_queue() to blk_queue_make_request(), so we also get to set the default lock for ->make_request_fn() based drivers. This is important since the queue flag locking requires a lock to be in place. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| | * | mg_disk: Add missing ready status check on mg_write()unsik Kim2009-07-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When last sector is written, ready bit of status register should be checked. Signed-off-by: unsik Kim <donari75@gmail.com> Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| | * | mg_disk: fix issue with data integrity on error in mg_write()Bartlomiej Zolnierkiewicz2009-07-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We cannot acknowledge the sector write before checking its status (which is done on the next loop iteration) and we also need to do the final status register check after writing the last sector. Fix mg_write() to match mg_write_intr() in this regard. While at it: - add mg_read_one() and mg_write_one() helpers - always use MG_SECTOR_SIZE and remove MG_STORAGE_BUFFER_SIZE [bart: thanks to Tejun for porting the patch over recent block changes] Cc: unsik Kim <donari75@gmail.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> =================================================================== Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| | * | mg_disk: fix reading invalid status when use polling driverunsik Kim2009-07-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When using polling driver, little delay is required to access status register. Without this, host might read invalid status. Signed-off-by: unsik Kim <donari75@gmail.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| | * | mg_disk: remove prohibited sleep operationunsik Kim2009-07-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | mflash's polling driver operate in standard request_fn_proc's context, sleep in this isn't permitted. Signed-off-by: unsik Kim <donari75@gmail.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * | | Merge branch 'timers-fixes-for-linus' of ↵Linus Torvalds2009-07-31
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: clocksource: Save mult_orig in clocksource_disable()
| | * | | clocksource: Save mult_orig in clocksource_disable()Magnus Damm2009-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To fix the common case where ->enable() does not set up mult, make sure mult_orig is saved in mult on disable. Also add comments to explain why we do this. Signed-off-by: Magnus Damm <damm@igel.co.jp> Cc: johnstul@us.ibm.com Cc: lethal@linux-sh.org Cc: akpm@linux-foundation.org LKML-Reference: <20090618152432.10136.9932.sendpatchset@rx1.opensource.se> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | | | Merge branch 'for-linus' of ↵Linus Torvalds2009-07-31
| |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc: mmc: orphan subsystem imxmmc: Remove unnecessary semicolons cb710: use SG_MITER_TO_SG/SG_MITER_FROM_SG sdhci: use SG_MITER_TO_SG/SG_MITER_FROM_SG lib/scatterlist: add a flags to signalize mapping direction
| | * | | | mmc: orphan subsystemPierre Ossman2009-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I do not have the time to take care of this, so remove myself as maintainer. Signed-off-by: Pierre Ossman <pierre@ossman.eu>
| | * | | | imxmmc: Remove unnecessary semicolonsJoe Perches2009-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Pavel Pisa <pisa@cmp.felk.cvut.cz> Signed-off-by: Pierre Ossman <pierre@ossman.eu>
| | * | | | cb710: use SG_MITER_TO_SG/SG_MITER_FROM_SGSebastian Andrzej Siewior2009-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | the code allready uses flush_kernel_dcache_page(). This patch updates the driver to the recent sg API changes which require that either SG_MITER_TO_SG or SG_MITER_FROM_SG is set. SG_MITER_TO_SG calls flush_kernel_dcache_page() in sg_mitter_stop() Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Acked-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by: Pierre Ossman <pierre@ossman.eu>
| | * | | | sdhci: use SG_MITER_TO_SG/SG_MITER_FROM_SGSebastian Andrzej Siewior2009-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | so the page will be flushed on unmap on ARCH which need it. Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Signed-off-by: Pierre Ossman <pierre@ossman.eu>
| | * | | | lib/scatterlist: add a flags to signalize mapping directionSebastian Andrzej Siewior2009-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sg_miter_start() is currently unaware of the direction of the copy process (to or from the scatter list). It is important to know the direction because the page has to be flushed in case the data written is seen on a different mapping in user land on cache incoherent architectures. Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Pierre Ossman <pierre@ossman.eu>
| * | | | | Merge branch 'for-linus' of ↵Linus Torvalds2009-07-31
| |\ \ \ \ \ | | |/ / / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: ALSA: sound/aoa: Add kmalloc NULL tests ALSA: hda - Increase PCM stream name buf in patch_realtek.c sound: mpu401.c: Buffer overflow sound: aedsp16: Buffer overflow ALSA: hda: fix out-of-bound hdmi_eld.sad[] write ALSA: hda - Add quirk for Dell Studio 1555
| | * | | | Merge branch 'fix/oss' into for-linusTakashi Iwai2009-07-31
| | |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * fix/oss: sound: mpu401.c: Buffer overflow sound: aedsp16: Buffer overflow
| | | * | | | sound: mpu401.c: Buffer overflowRoel Kluin2009-07-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | mpu_synth_info[m].name is a char[30], and the minimum length of the data written by sprintf is 31 bytes including terminating null. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
| | | * | | | sound: aedsp16: Buffer overflowRoel Kluin2009-07-29
| | | |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | DSPVersion is declared as char[3], but the sprintf writes at least 4 bytes including terminating null. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
| | * | | | Merge branch 'fix/misc' into for-linusTakashi Iwai2009-07-31
| | |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | * fix/misc: ALSA: sound/aoa: Add kmalloc NULL tests
| | | * | | | ALSA: sound/aoa: Add kmalloc NULL testsJulia Lawall2009-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Check that the result of kzalloc is not NULL before a dereference. The semantic match that finds this problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ 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 ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Takashi Iwai <tiwai@suse.de>
| | * | | | | Merge branch 'fix/hda' into for-linusTakashi Iwai2009-07-31
| | |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * fix/hda: ALSA: hda - Increase PCM stream name buf in patch_realtek.c ALSA: hda: fix out-of-bound hdmi_eld.sad[] write ALSA: hda - Add quirk for Dell Studio 1555
| | | * | | | | ALSA: hda - Increase PCM stream name buf in patch_realtek.cTakashi Iwai2009-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The name buf with size 16 is too short for some codec names, e.g. truncated like "ALC861-VD Analo". Now the size is doubled. Signed-off-by: Takashi Iwai <tiwai@suse.de>
| | | * | | | | ALSA: hda: fix out-of-bound hdmi_eld.sad[] writeRoel Kluin2009-07-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | e->sad[] is declared with size ELD_MAX_SAD=16, but the guard allows range 0-31. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
| | | * | | | | ALSA: hda - Add quirk for Dell Studio 1555Takashi Iwai2009-07-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Added a quirk entry for Dell Studio 1555. Reference: Novell bnc#525244 https://bugzilla.novell.com/show_bug.cgi?id=525244 Signed-off-by: Takashi Iwai <tiwai@suse.de>
| * | | | | | | Merge branch 'tracing-fixes-for-linus' of ↵Linus Torvalds2009-07-30
| |\ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: tracing/stat: Fix seqfile memory leak function-graph: Fix seqfile memory leak trace_stack: Fix seqfile memory leak profile: Suppress warning about large allocations when profile=1 is specified
| | * | | | | | | tracing/stat: Fix seqfile memory leakLi Zefan2009-07-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Every time we cat a trace_stat file, we leak memory allocated by seq_open(). Also fix memory leak in a failure path in tracing_stat_open(). Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> LKML-Reference: <4A67D92B.4060704@cn.fujitsu.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| | * | | | | | | function-graph: Fix seqfile memory leakLi Zefan2009-07-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Every time we cat set_graph_function, we leak memory allocated by seq_open(). Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> LKML-Reference: <4A67D907.2010500@cn.fujitsu.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| | * | | | | | | trace_stack: Fix seqfile memory leakLi Zefan2009-07-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Every time we cat stack_trace, we leak memory allocated by seq_open(). Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> LKML-Reference: <4A67D8E8.3020500@cn.fujitsu.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| | * | | | | | | profile: Suppress warning about large allocations when profile=1 is specifiedMel Gorman2009-07-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When profile= is used, a large buffer is allocated early at boot. This can be larger than what the page allocator can provide so it prints a warning. However, the caller is able to handle the situation so this patch suppresses the warning. Signed-off-by: Mel Gorman <mel@csn.ul.ie> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Linux Memory Management List <linux-mm@kvack.org> Cc: Heinz Diehl <htd@fancy-poultry.org> Cc: David Miller <davem@davemloft.net> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Andrew Morton <akpm@linux-foundation.org> LKML-Reference: <1247656992-19846-3-git-send-email-mel@csn.ul.ie> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstableLinus Torvalds2009-07-30
| |\ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable: Btrfs: be more polite in the async caching threads Btrfs: preserve commit_root for async caching
| | * | | | | | | | Btrfs: be more polite in the async caching threadsChris Mason2009-07-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The semaphore used by the async caching threads can prevent a transaction commit, which can make the FS appear to stall. This releases the semaphore more often when a transaction commit is in progress. Signed-off-by: Chris Mason <chris.mason@oracle.com>
| | * | | | | | | | Btrfs: preserve commit_root for async cachingYan Zheng2009-07-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The async block group caching code uses the commit_root pointer to get a stable version of the extent allocation tree for scanning. This copy of the tree root isn't going to change and it significantly reduces the complexity of the scanning code. During a commit, we have a loop where we update the extent allocation tree root. We need to loop because updating the root pointer in the tree of tree roots may allocate blocks which may change the extent allocation tree. Right now the commit_root pointer is changed inside this loop. It is more correct to change the commit_root pointer only after all the looping is done. Signed-off-by: Yan Zheng <zheng.yan@oracle.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-21 06:30:14 -0500