- 05 May, 2008 32 commits
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Peter Zijlstra authored
Gautham R Shenoy reported: > While running the usual CPU-Hotplug stress tests on linux-2.6.25, > I noticed the following in the console logs. > > This is a wee bit difficult to reproduce. In the past 10 runs I hit this > only once. > > ------------[ cut here ]------------ > > WARNING: at kernel/sched.c:962 hrtick+0x2e/0x65() > > Just wondering if we are doing a good job at handling the cancellation > of any per-cpu scheduler timers during CPU-Hotplug. This looks like its indeed not cancelled at all and migrates the it to another cpu. Fix it via a proper hotplug notifier mechanism. Reported-by:
Gautham R Shenoy <ego@in.ibm.com> Signed-off-by:
Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: stable@kernel.org Signed-off-by:
Ingo Molnar <mingo@elte.hu>
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Gregory Haskins authored
We currently use an optimization to skip the overhead of wake-idle processing if more than one task is assigned to a run-queue. The assumption is that the system must already be load-balanced or we wouldnt be overloaded to begin with. The problem is that we are looking at rq->nr_running, which may include RT tasks in addition to CFS tasks. Since the presence of RT tasks really has no bearing on the balance status of CFS tasks, this throws the calculation off. This patch changes the logic to only consider the number of CFS tasks when making the decision to optimze the wake-idle. Signed-off-by:
Gregory Haskins <ghaskins@novell.com> CC: Peter Zijlstra <peterz@infradead.org> Signed-off-by:
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Gregory Haskins authored
Dmitry Adamushko pointed out a logic error in task_wake_up_rt() where we will always evaluate to "true". You can find the thread here: http://lkml.org/lkml/2008/4/22/296 In reality, we only want to try to push tasks away when a wake up request is not going to preempt the current task. So lets fix it. Note: We introduce test_tsk_need_resched() instead of open-coding the flag check so that the merge-conflict with -rt should help remind us that we may need to support NEEDS_RESCHED_DELAYED in the future, too. Signed-off-by:
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Harvey Harrison authored
Noticed by sparse: kernel/sched.c:760:20: warning: symbol 'sched_feat_names' was not declared. Should it be static? kernel/sched.c:767:5: warning: symbol 'sched_feat_open' was not declared. Should it be static? kernel/sched_fair.c:845:3: warning: returning void-valued expression kernel/sched.c:4386:3: warning: returning void-valued expression Signed-off-by:
Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by:
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Andrew Morton authored
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: "Justin Mattock" <justinmattock@gmail.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Ingo Molnar authored
Fabio Checconi noticed that Documentation/scheduler/sched-design.txt was a stale copy of the old scheduler. Remove it. Reported-by:
Fabio Checconi <fabio@gandalf.sssup.it> Signed-off-by:
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Harvey Harrison authored
The C files are included directly in sched.c, so they are effectively static. Signed-off-by:
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Peter Zijlstra authored
Joel noticed that the !lw->inv_weight contition isn't unlikely anymore so remove the unlikely annotation. Also, remove the two div64_u64() inv_weight calculations, which makes them rely on the calc_delta_mine() path as well. Signed-off-by:
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Peter Zijlstra authored
Normalized sleeper uses calc_delta*() which requires that the rq load is already updated, so move account_entity_enqueue() before place_entity() Tested-by:
Frans Pop <elendil@planet.nl> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdbLinus Torvalds authored
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb: kgdb: kconfig fix xconfig/menuconfig element kgdb: fix signedness mixmatches, add statics, add declaration to header kgdb: 1000 loops for the single step test in kgdbts kgdb: trivial sparse fixes in kgdb test-suite kgdb: minor documentation fixes
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: [ALSA] soc - fix S3C2410 i2s programming error [ALSA] soc - fix s3c2410 PCM breakage [ALSA] ac97 - Add a workaround for broken quirk for VT1617A codec [ALSA] Revert migration to alc_set_pin_output() in alc861_auto_set_output_and_unmute() [ALSA] fm801 - Fix kconfig dependency mess of fm801-tea575x [ALSA] hda - Support IDT 92HD206 codec [ALSA] pcsp: Fix build with CONFIG_PM=n
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Eric Sesterhenn authored
Since FUTEX_FD was scheduled for removal in June 2007 lets remove it. Google Code search found no users for it and NGPT was abandoned in 2003 according to IBM. futex.h is left untouched to make sure the id does not get reassigned. Since queue_me() has no users left it is commented out to avoid a warning, i didnt remove it completely since it is part of the internal api (matching unqueue_me()) Signed-off-by:
Eric Sesterhenn <snakebyte@gmx.de> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (removed rest) Acked-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Jan Engelhardt authored
Kconfig.kgdb: fix menuconfig element Signed-off-by:
Jan Engelhardt <jengelh@computergmbh.de> Signed-off-by:
Jason Wessel <jason.wessel@windriver.com>
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Harvey Harrison authored
Noticed by sparse: arch/x86/kernel/kgdb.c:556:15: warning: symbol 'kgdb_arch_pc' was not declared. Should it be static? kernel/kgdb.c:149:8: warning: symbol 'kgdb_do_roundup' was not declared. Should it be static? kernel/kgdb.c:193:22: warning: symbol 'kgdb_arch_pc' was not declared. Should it be static? kernel/kgdb.c:712:5: warning: symbol 'remove_all_break' was not declared. Should it be static? Related to kgdb_hex2long: arch/x86/kernel/kgdb.c:371:28: warning: incorrect type in argument 2 (different signedness) arch/x86/kernel/kgdb.c:371:28: expected long *long_val arch/x86/kernel/kgdb.c:371:28: got unsigned long *<noident> kernel/kgdb.c:469:27: warning: incorrect type in argument 2 (different signedness) kernel/kgdb.c:469:27: expected long *long_val kernel/kgdb.c:469:27: got unsigned long *<noident> kernel/kgdb.c:470:27: warning: incorrect type in argument 2 (different signedness) kernel/kgdb.c:470:27: expected long *long_val kernel/kgdb.c:470:27: got unsigned long *<noident> kernel/kgdb.c:894:27: warning: incorrect type in argument 2 (different signedness) kernel/kgdb.c:894:27: expected long *long_val kernel/kgdb.c:894:27: got unsigned long *<noident> kernel/kgdb.c:895:27: warning: incorrect type in argument 2 (different signedness) kernel/kgdb.c:895:27: expected long *long_val kernel/kgdb.c:895:27: got unsigned long *<noident> kernel/kgdb.c:1127:28: warning: incorrect type in argument 2 (different signedness) kernel/kgdb.c:1127:28: expected long *long_val kernel/kgdb.c:1127:28: got unsigned long *<noident> kernel/kgdb.c:1132:25: warning: incorrect type in argument 2 (different signedness) kernel/kgdb.c:1132:25: expected long *long_val kernel/kgdb.c:1132:25: got unsigned long *<noident> Signed-off-by:
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Jason Wessel authored
The single step test is not terribly costly and it should be able to pass at 1000 loops successfully in under 1 second. A non-kgdb timing regression was found using this test, but it did not occur frequently because by default the test was only executed a single time. This patch changes the default for the single step test to 1000 iterations and allows for individual configuration of the single step test to further exercise the kgdb subsystem when needed. Signed-off-by: -
Harvey Harrison authored
Shadowed variable and integer as NULL pointer fixes: drivers/misc/kgdbts.c:877:6: warning: symbol 'sys_open_test' shadows an earlier one drivers/misc/kgdbts.c:537:27: originally declared here drivers/misc/kgdbts.c:378:22: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:386:22: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:468:30: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:472:15: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:502:30: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:506:30: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:509:30: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:523:20: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:527:20: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:530:15: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:541:21: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:545:21: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:548:15: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:559:30: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:563:15: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:573:16: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:574:19: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:578:15: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:588:16: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:589:19: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:593:15: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:602:16: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:604:15: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:925:3: warning: Using plain integer as NULL pointer drivers/misc/kgdbts.c:938:3: warning: Using plain integer as NULL pointer Signed-off-by:
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grzegorz.chwesewicz@chilan.com authored
Two minor fixes to the kgdb documentation. Signed-off-by:
Grzegorz Chwesewicz, Chilan <grzegorz.chwesewicz@chilan.com> Signed-off-by:
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Davide Rizzo authored
S3C2410 i2s driver currently manages only i2s protocol (and not left justified one) and slave mode. With this small patch, other modes are possible. Signed-off-by:
Davide Rizzo <davide@elpa.it> Acked-by:
Liam Girdwood <lg@opensource.wolfsonmicro.com> Signed-off-by:
Takashi Iwai <tiwai@suse.de>
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Davide Rizzo authored
S3C2410 pcm doesn't work. s3c2410_dma_request() now returns the channel number and not 0 if OK. Signed-off-by:
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Takashi Iwai authored
On boards with VT1617A codec, the sound disappears suddenly. This looks like a problem with HPE-bit control that is supposed to be set in patch_vt1617a(). However, on such problematic hardwares, the bit is actually reset mysteriously. The patch adds a workaround for the wrong quirk. Signed-off-by: -
Jacek Luczak authored
Change done by: commit f6c7e546 [ALSA] hda-codec - Fix auto-configuration of Realtek codecs broke sound on ALC861 Analog. Signed-off-by:Jacek Luczak <luczak.jacek@gmail.com> Signed-off-by:
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Takashi Iwai authored
FM801-tea575x tuner has a reverse selection to V4L1 and this causes nasty dependency problems. The patch simplifies the dependency with a normal "depends on VIDEO_V4L1". This decreases the usability but fixes bugs, yeah. If any better feature like "requires" is introduced to kbuild in future, we'll be able to switch it... Signed-off-by: -
Takashi Iwai authored
Added the support for IDT 92HD206 codec chip. It's compatible with STAC927x. Signed-off-by: -
Johann Felix Soden authored
sound/drivers/pcsp/pcsp.c: In function 'pcsp_suspend': sound/drivers/pcsp/pcsp.c:201: error: implicit declaration of function 'snd_pcm_suspend_all' Signed-off-by:
Johann Felix Soden <johfel@users.sourceforge.net> CC: Stas Sergeev <stsp@aknet.ru> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/hpa/linux-2.6-inttypesLinus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/hpa/linux-2.6-inttypes: fix asm-mips/types.h syntax error fix asm-alpha/types.h breakage
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git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86-fixesLinus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86-fixes: x86: fix setup printk format warning x86: olpc build fix x86: video/fbdev.c: add MODULE_LICENSE x86: fix up bootparam.h for userspace inclusion x86: relocs ELF handling - use SELFMAG instead of numeric constant x86: vdso ELF handling - use SELFMAG instead of numeric constant x86: remove dell reboot dmi quirk board name match x86: es7000 build fix x86: make additional_cpus static x86: make start_secondary() static kbuild, suspend, x86: fix rebuild of wakeup.bin uml: fix gcc problem x86: undo visws/numaq build changes
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git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixesLinus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes: kconfig-language.txt: remove bogus hint kconfig: fix MAC OS X warnings in menuconfig modpost: i2c aliases need no trailing wildcard
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Bryan Wu authored
CC fs/proc/task_nommu.o fs/proc/task_nommu.c: In function ‘task_mem’: fs/proc/task_nommu.c:55: error: dereferencing pointer to incomplete type make[2]: *** [fs/proc/task_nommu.o] Error 1 make[1]: *** [fs/proc] Error 2 make: *** [fs] Error 2 Signed-off-by:
Bryan Wu <cooloney@kernel.org> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: ide: IDE_HFLAG_SERIALIZE_DMA bugfix
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git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvmLinus Torvalds authored
* 'kvm-updates-2.6.26' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm: x86: KVM geust: make setup_secondary_clock definition dependent on local apic KVM: MMU: Allow more than PAGES_PER_HPAGE write protections per large page KVM: avoid fx_init() schedule in atomic KVM: Avoid spurious execeptions after setting registers KVM: PIT: support mode 4 KVM: x86 emulator: disable writeback on lmsw KVM: ppc: deliver INTERRUPT_FP_UNAVAIL to the guest KVM: ppc: Handle guest idle by emulating MSR[WE] writes KVM: x86: task switch: fix wrong bit setting for the busy flag KVM: VMX: Enable EPT feature for KVM KVM: VMX: Prepare an identity page table for EPT in real mode KVM: Export necessary function for EPT KVM: MMU: Remove #ifdef CONFIG_X86_64 to support 4 level EPT KVM: MMU: Add EPT support KVM: Add kvm_x86_ops get_tdp_level() KVM: MMU: Move some definitions to a header file KVM: VMX: EPT Feature Detection
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Ingo Molnar authored
x86.git testing found the following build failure on v2.6.26-rc1: In file included from include/linux/kobject.h:22, from include/linux/module.h:17, from include/linux/crypto.h:22, from arch/x86/kernel/asm-offsets_32.c:8, from arch/x86/kernel/asm-offsets.c:3: include/linux/sysfs.h:201: error: redefinition of 'sysfs_update_group' include/linux/sysfs.h:195: error: previous definition of 'sysfs_update_group' was here make[1]: *** [arch/x86/kernel/asm-offsets.s] Error 1 make: *** [prepare0] Error 2 with the following config: http://redhat.com/~mingo/misc/config-Sun_May__4_07_09_30_CEST_2008.bad the reason for the build failure is the duplicate definition of the sysfs_update_group() inline function in include/linux/sysfs.h. The duplication was a merge error: it was added via -mm by commit v2.6.25-7262-g2850699c, "sysfs: sysfs_update_group stub for CONFIG_SYSFS=n" a day before v2.6.26-rc1, but a day before that the same commit was already merged upstream via the sysfs tree, with commit v2.6.25-7211-g1cbfb7a5. Signed-off-by: -
Linus Torvalds authored
The kernel module loader used to be much too happy to allow loading of modules for the wrong kernel version by default. For example, if you had MODVERSIONS enabled, but tried to load a module with no version info, it would happily load it and taint the kernel - whether it was likely to actually work or not! Generally, such forced module loading should be considered a really really bad idea, so make it conditional on a new config option (MODULE_FORCE_LOAD), and make it default to off. If somebody really wants to force module loads, that's their problem, but we should not encourage it. Especially as it happened to me by mistake (ie regular unversioned Fedora modules getting loaded) causing lots of strange behavior. Signed-off-by:
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- 04 May, 2008 8 commits
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Adrian Bunk authored
This patch fixes the following compile error caused by commit 23cf11dd (mips: types: use <asm-generic/int-*.h> for the mips architecture): <-- snip --> ... CC kernel/bounds.s In file included from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/types.h:12, from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/page-flags.h:8, from /home/bunk/linux/kernel-2.6/git/linux-2.6/kernel/bounds.c:9: include2/asm/types.h:56:2: error: #endif without #if make[2]: *** [kernel/bounds.s] Error 1 <-- snip --> Signed-off-by:
Adrian Bunk <bunk@kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by:
H. Peter Anvin <hpa@zytor.com>
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Adrian Bunk authored
This patch fixes the following compile error on alpha caused by commit 3726c23d (alpha: types: use <asm-generic/int-*.h> for the alpha architecture): <-- snip --> ... CC arch/alpha/kernel/asm-offsets.s In file included from include2/asm/topology.h:6, from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/topology.h:34, from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/mmzone.h:683, from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/gfp.h:4, from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/slab.h:12, from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/percpu.h:5, from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/rcupdate.h:39, from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/pid.h:4, from /home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/sched.h:74, from /home/bunk/linux/kernel-2.6/git/linux-2.6/arch/alpha/kernel/asm-offsets.c:9: include2/asm/machvec.h:44: error: expected declaration specifiers or '...' before 'dma_addr_t' include2/asm/machvec.h:44: error: expected declaration specifiers or '...' before 'dma_addr_t' In file included from /home/bunk/linux/kernel-2.6/git/linux-2.6/arch/alpha/kernel/asm-offsets.c:12: include2/asm/io.h:94: warning: type defaults to 'int' in declaration of 'dma_addr_t' include2/asm/io.h:94: warning: variable 'dma_addr_t' declared 'inline' include2/asm/io.h:94: error: expected ',' or ';' before 'isa_page_to_bus' make[2]: *** [arch/alpha/kernel/asm-offsets.s] Error 1 <-- snip --> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Signed-off-by:
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Adrian Bunk authored
For the use case the hint describe a simple dependency is enough. Signed-off-by:
Randy Dunlap <randy.dunlap@oracle.com>
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Sam Ravnborg authored
Signed-off-by:
Sam Ravnborg <sam@ravnborg.org> Acked-by:
Timur Tabi <timur@freescale.com>
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Randy Dunlap authored
Fix x86 setup printk format warming: next-20080430/arch/x86/kernel/setup.c:172: warning: format '%lu' expects type 'long unsigned int', but argument 2 has type 'ssize_t' Signed-off-by:
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Thomas Gleixner authored
CONFIG_OLPC needs to depend on MGEODE_LX Signed-off-by:
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Adrian Bunk authored
Add the missing MODULE_LICENSE("GPL"). Signed-off-by: -
Rusty Russell authored
commit 8b664aa6 (x86, boot: add linked list of struct setup_data) put a new struct in bootparam.h, but didn't use the userspace-safe types. Signed-off-by:
Rusty Russell <rusty@rustcorp.com.au> Cc: Huang Ying <ying.huang@intel.com> Acked-by:
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