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2009-01-30cgroup: fix root_count when mount fails due to busy subsystemPaul Menage1-2/+4
root_count was being incremented in cgroup_get_sb() after all error checking was complete, but decremented in cgroup_kill_sb(), which can be called on a superblock that we gave up on due to an error. This patch changes cgroup_kill_sb() to only decrement root_count if the root was previously linked into the list of roots. Signed-off-by: Paul Menage <menage@google.com> Tested-by: Serge Hallyn <serue@us.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-30cgroups: add cpu_relax() calls in css_tryget() and cgroup_clear_css_refs()Paul Menage1-2/+5
css_tryget() and cgroup_clear_css_refs() contain polling loops; these loops should have cpu_relax calls in them to reduce cross-cache traffic. Signed-off-by: Paul Menage <menage@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-30cgroups: fix lock inconsistency in cgroup_clone()Li Zefan1-6/+7
I fixed a bug in cgroup_clone() in Linus' tree in commit 7b574b7 ("cgroups: fix a race between cgroup_clone and umount") without noticing there was a cleanup patch in -mm tree that should be rebased (now commit 104cbd5, "cgroups: use task_lock() for access tsk->cgroups safe in cgroup_clone()"), thus resulted in lock inconsistency. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Paul Menage <menage@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-30cgroups: use hierarchy mutex in creation failure pathKAMEZAWA Hiroyuki1-0/+2
Now, cgrp->sibling is handled under hierarchy mutex. error route should do so, too. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Acked-by Paul Menage <menage@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-28cpumask fallout: Initialize irq_default_affinity earlierDavid Daney2-8/+16
Move the initialization of irq_default_affinity to early_irq_init as core_initcall is too late. irq_default_affinity can be used in init_IRQ and potentially timer and SMP init as well. All of these happen before core_initcall. Moving the initialization to early_irq_init ensures that it is initialized before it is used. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Acked-by: Mike Travis <travis@sgi.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-28Make irq_*_affinity depend on CONFIG_GENERIC_HARDIRQS too.David Daney1-1/+1
In interrupt.h these functions are declared only if CONFIG_GENERIC_HARDIRQS is set. We should define them under identical conditions. Signed-off-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-27Merge branch 'hibern_fixes' of ↵Linus Torvalds1-0/+10
git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'hibern_fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: SATA PIIX: Blacklist system that spins off disks during ACPI power off SATA Sil: Blacklist system that spins off disks during ACPI power off SATA AHCI: Blacklist system that spins off disks during ACPI power off SATA: Blacklisting of systems that spin off disks during ACPI power off DMI: Introduce dmi_first_match to make the interface more flexible Hibernation: Introduce system_entering_hibernation
2009-01-27Hibernation: Introduce system_entering_hibernationRafael J. Wysocki1-0/+10
Introduce boolean function system_entering_hibernation() returning 'true' during the last phase of hibernation, in which devices are being put into low power states and the sleep state (for example, ACPI S4) is finally entered. Some device drivers need such a function to check if the system is in the final phase of hibernation. In particular, some SATA drivers are going to use it for blacklisting systems in which the disks should not be spun down during the last phase of hibernation (the BIOS will do that anyway). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2009-01-27Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixesLinus Torvalds1-6/+10
* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes: kbuild: fix kbuild.txt typos kbuild: print usage with no arguments in scripts/config Revert "kbuild: strip generated symbols from *.ko"
2009-01-26Merge branch 'sh/for-2.6.29' of ↵Linus Torvalds1-23/+24
git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 * 'sh/for-2.6.29' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (22 commits) dma-coherent: Restore dma_alloc_from_coherent() large alloc fall back policy. dma-coherent: per-device coherent area is in pages, not bytes. sh: fix unaligned and nonexistent address handling nommu: Stub in vm_map_ram()/vm_unmap_ram()/vm_unmap_aliases(). sh: fix sh-sci / early printk build on sh7723 sh: export the sh7343 JPU to user space sh: update defconfigs. serial: sh-sci: Fix up SH7720/SH7721 SCI build. sh: Kill off obsolete busses from arch/sh/Kconfig. sh: sh7785lcr/highlander/hp6xx need linux/irq.h. sh: Migo-R MMC support using spi_gpio and mmc_spi. sh: ap325rxa MMC support using spi_gpio and mmc_spi sh: mach-x3proto: needs linux/irq.h. sh: Drop the BKL from sys_execve() on SH-5. sh: convert rsk7203 to use smsc911x. sh: convert magicpanelr2 platform to use smsc911x. sh: convert ap325rxa platform to use smsc911x. sh: mach-migor: Add tw9910 support. sh: mach-migor: Delete soc_camera_platform setup. sh: mach-migor: Add ov772x support. ...
2009-01-26Merge branch 'core-fixes-for-linus' of ↵Linus Torvalds5-4/+15
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: debugobjects: add and use INIT_WORK_ON_STACK rcu: remove duplicate CONFIG_RCU_CPU_STALL_DETECTOR relay: fix lock imbalance in relay_late_setup_files oprofile: fix uninitialized use of struct op_entry rcu: move Kconfig menu softlock: fix false panic which can occur if softlockup_thresh is reduced rcu: add __cpuinit to rcu_init_percpu_data()
2009-01-26Merge branch 'timers-fixes-for-linus' of ↵Linus Torvalds5-99/+26
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: hrtimers: fix inconsistent lock state on resume in hres_timers_resume time-sched.c: tick_nohz_update_jiffies should be static locking, hpet: annotate false positive warning kernel/fork.c: unused variable 'ret' itimers: remove the per-cpu-ish-ness
2009-01-26Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds1-10/+10
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (29 commits) xen: unitialised return value in xenbus_write_transaction x86: fix section mismatch warning x86: unmask CPUID levels on Intel CPUs, fix x86: work around PAGE_KERNEL_WC not getting WC in iomap_atomic_prot_pfn. x86: use standard PIT frequency xen: handle highmem pages correctly when shrinking a domain x86, mm: fix pte_free() xen: actually release memory when shrinking domain x86: unmask CPUID levels on Intel CPUs x86: add MSR_IA32_MISC_ENABLE bits to <asm/msr-index.h> x86: fix PTE corruption issue while mapping RAM using /dev/mem x86: mtrr fix debug boot parameter x86: fix page attribute corruption with cpa() Revert "x86: signal: change type of paramter for sys_rt_sigreturn()" x86: use early clobbers in usercopy*.c x86: remove kernel_physical_mapping_init() from init section fix: crash: IP: __bitmap_intersects+0x48/0x73 cpufreq: use work_on_cpu in acpi-cpufreq.c for drv_read and drv_write work_on_cpu: Use our own workqueue. work_on_cpu: don't try to get_online_cpus() in work_on_cpu. ...
2009-01-22Merge branch 'core/debugobjects' into core/urgentThomas Gleixner27-210/+222
2009-01-21dma-coherent: Restore dma_alloc_from_coherent() large alloc fall back policy.Paul Mundt1-22/+23
When doing large allocations (larger than the per-device coherent area) the generic memory allocators are silently fallen back on regardless of consideration for the per-device constraints. In the DMA_MEMORY_EXCLUSIVE case falling back on generic memory is not an option, as it tends not to be addressable by the DMA hardware in question. This issue showed up with the 8139too breakage on the Dreamcast, where non-addressable buffers were silently allocated due to the size mismatch calculation -- while it should have simply errored out upon being unable to satisfy the allocation with the given device constraints. This restores fall back behaviour to what it was before the oversized request change caused multiple regressions. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-01-21dma-coherent: per-device coherent area is in pages, not bytes.Adrian McMenamin1-2/+2
Commit 58c6d3dfe436eb8cfb451981d8fdc9044eaf42da ("dma-coherent: catch oversized requests to dma_alloc_from_coherent()") attempted to add a sanity check to bail out on allocations larger than the coherent area. Unfortunately when this was implemented, the fact the coherent area is tracked in pages rather than bytes was overlooked, which subsequently broke every single dma_alloc_from_coherent() user, forcing the allocation silently through generic memory instead. Signed-off-by: Adrian McMenamin <adrian@mcmen.demon.co.uk > Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-01-20work_on_cpu: Use our own workqueue.Rusty Russell1-1/+7
Impact: remove potential clashes with generic kevent workqueue Annoyingly, some places we want to use work_on_cpu are already in workqueues. As per Ingo's suggestion, we create a different workqueue for work_on_cpu. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-20work_on_cpu: don't try to get_online_cpus() in work_on_cpu.Rusty Russell1-10/+4
Impact: remove potential circular lock dependency with cpu hotplug lock This has caused more problems than it solved, with a pile of cpu hotplug locking issues. Followup patches will get_online_cpus() in callers that need it, but if they don't do it they're no worse than before when they were using set_cpus_allowed without locking. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-18hrtimers: fix inconsistent lock state on resume in hres_timers_resumePeter Zijlstra1-1/+3
Andrey Borzenkov reported this lockdep assert: > [17854.688347] ================================= > [17854.688347] [ INFO: inconsistent lock state ] > [17854.688347] 2.6.29-rc2-1avb #1 > [17854.688347] --------------------------------- > [17854.688347] inconsistent {in-hardirq-W} -> {hardirq-on-W} usage. > [17854.688347] pm-suspend/18240 [HC0[0]:SC0[0]:HE1:SE1] takes: > [17854.688347] (&cpu_base->lock){++..}, at: [<c0136fcc>] retrigger_next_event+0x5c/0xa0 > [17854.688347] {in-hardirq-W} state was registered at: > [17854.688347] [<c01443cd>] __lock_acquire+0x79d/0x1930 > [17854.688347] [<c01455bc>] lock_acquire+0x5c/0x80 > [17854.688347] [<c03092e5>] _spin_lock+0x35/0x70 > [17854.688347] [<c0136e61>] hrtimer_run_queues+0x31/0x140 > [17854.688347] [<c0128d98>] run_local_timers+0x8/0x20 > [17854.688347] [<c0128dd3>] update_process_times+0x23/0x60 > [17854.688347] [<c013e274>] tick_periodic+0x24/0x80 > [17854.688347] [<c013e2e2>] tick_handle_periodic+0x12/0x70 > [17854.688347] [<c0104e24>] timer_interrupt+0x14/0x20 > [17854.688347] [<c01607b9>] handle_IRQ_event+0x29/0x60 > [17854.688347] [<c0161c59>] handle_level_irq+0x69/0xe0 > [17854.688347] [<ffffffff>] 0xffffffff > [17854.688347] irq event stamp: 55771 > [17854.688347] hardirqs last enabled at (55771): [<c0309125>] _spin_unlock_irqrestore+0x35/0x60 > [17854.688347] hardirqs last disabled at (55770): [<c0309419>] _spin_lock_irqsave+0x19/0x80 > [17854.688347] softirqs last enabled at (54836): [<c0124f54>] __do_softirq+0xc4/0x110 > [17854.688347] softirqs last disabled at (54831): [<c01049ae>] do_softirq+0x8e/0xe0 > [17854.688347] > [17854.688347] other info that might help us debug this: > [17854.688347] 3 locks held by pm-suspend/18240: > [17854.688347] #0: (&buffer->mutex){--..}, at: [<c01dd4c5>] sysfs_write_file+0x25/0x100 > [17854.688347] #1: (pm_mutex){--..}, at: [<c015056f>] enter_state+0x4f/0x140 > [17854.688347] #2: (dpm_list_mtx){--..}, at: [<c027880f>] device_pm_lock+0xf/0x20 > [17854.688347] > [17854.688347] stack backtrace: > [17854.688347] Pid: 18240, comm: pm-suspend Not tainted 2.6.29-rc2-1avb #1 > [17854.688347] Call Trace: > [17854.688347] [<c0306248>] ? printk+0x18/0x20 > [17854.688347] [<c0141fac>] print_usage_bug+0x16c/0x1d0 > [17854.688347] [<c0142bcf>] mark_lock+0x8bf/0xc90 > [17854.688347] [<c0106b8f>] ? pit_next_event+0x2f/0x40 > [17854.688347] [<c01441b0>] __lock_acquire+0x580/0x1930 > [17854.688347] [<c030916d>] ? _spin_unlock+0x1d/0x20 > [17854.688347] [<c0106b8f>] ? pit_next_event+0x2f/0x40 > [17854.688347] [<c013dd38>] ? clockevents_program_event+0x98/0x160 > [17854.688347] [<c0142fe8>] ? mark_held_locks+0x48/0x90 > [17854.688347] [<c0309125>] ? _spin_unlock_irqrestore+0x35/0x60 > [17854.688347] [<c0143229>] ? trace_hardirqs_on_caller+0x139/0x190 > [17854.688347] [<c014328b>] ? trace_hardirqs_on+0xb/0x10 > [17854.688347] [<c01455bc>] lock_acquire+0x5c/0x80 > [17854.688347] [<c0136fcc>] ? retrigger_next_event+0x5c/0xa0 > [17854.688347] [<c03092e5>] _spin_lock+0x35/0x70 > [17854.688347] [<c0136fcc>] ? retrigger_next_event+0x5c/0xa0 > [17854.688347] [<c0136fcc>] retrigger_next_event+0x5c/0xa0 > [17854.688347] [<c013711a>] hres_timers_resume+0xa/0x10 > [17854.688347] [<c013aa8e>] timekeeping_resume+0xee/0x150 > [17854.688347] [<c0273384>] __sysdev_resume+0x14/0x50 > [17854.688347] [<c0273407>] sysdev_resume+0x47/0x80 > [17854.688347] [<c02791ab>] device_power_up+0xb/0x20 > [17854.688347] [<c015043f>] suspend_devices_and_enter+0xcf/0x150 > [17854.688347] [<c0150c2f>] ? freeze_processes+0x3f/0x90 > [17854.688347] [<c0150614>] enter_state+0xf4/0x140 > [17854.688347] [<c01506dd>] state_store+0x7d/0xc0 > [17854.688347] [<c0150660>] ? state_store+0x0/0xc0 > [17854.688347] [<c0202da4>] kobj_attr_store+0x24/0x30 > [17854.688347] [<c01dd53c>] sysfs_write_file+0x9c/0x100 > [17854.688347] [<c019916c>] vfs_write+0x9c/0x160 > [17854.688347] [<c0103494>] ? restore_nocheck_notrace+0x0/0xe > [17854.688347] [<c01dd4a0>] ? sysfs_write_file+0x0/0x100 > [17854.688347] [<c01992ed>] sys_write+0x3d/0x70 > [17854.688347] [<c0103371>] sysenter_do_call+0x12/0x31 Andrey's analysis: > timekeeping_resume() is called via class ->resume > method; and according to comments in sysdev_resume() and > device_power_up(), they are called with interrupts disabled. > > Looking at suspend_enter, irqs *are* disabled at this point. > > So it actually looks like something (may be some driver) > unconditionally enabled irqs in resume path. Add a debug check to test this theory. If it triggers then it triggers because the resume code calls it with irqs enabled, which is a no-no not just for timekeeping_resume(), but also bad for a number of other resume handlers. Reported-by: Andrey Borzenkov <arvidjaar@mail.ru> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-18relay: fix lock imbalance in relay_late_setup_filesJiri Slaby1-1/+3
One fail path in relay_late_setup_files() omits mutex_unlock(&relay_channels_mutex); Add it. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-16Merge branch 'misc' into releaseLen Brown2-2/+3
2009-01-16kprobes: check CONFIG_FREEZER instead of CONFIG_PMMasami Hiramatsu1-1/+1
Check CONFIG_FREEZER instead of CONFIG_PM because kprobe booster depends on freeze_processes() and thaw_processes() when CONFIG_PREEMPT=y. This fixes a linkage error which occurs when CONFIG_PREEMPT=y, CONFIG_PM=y and CONFIG_FREEZER=n. Reported-by: Cheng Renquan <crquan@gmail.com> Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Len Brown <len.brown@intel.com>
2009-01-16PM: Fix freezer compilation if PM_SLEEP is unsetRafael J. Wysocki1-1/+2
Freezer fails to compile if with the following configuration settings: CONFIG_CGROUPS=y CONFIG_CGROUP_FREEZER=y CONFIG_MODULES=y CONFIG_FREEZER=y CONFIG_PM=y CONFIG_PM_SLEEP=n Fix this by making process.o compilation depend on CONFIG_FREEZER. Reported-by: Cheng Renquan <crquan@gmail.com> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Len Brown <len.brown@intel.com>
2009-01-16Merge branch 'sched-fixes-for-linus' of ↵Linus Torvalds2-13/+37
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sched: sched_slice() fixlet sched: fix update_min_vruntime sched: SCHED_OTHER vs SCHED_IDLE isolation sched: SCHED_IDLE weight change sched: fix bandwidth validation for UID grouping Revert "sched: improve preempt debugging"
2009-01-16resources: fix parameter name and kernel-docRandy Dunlap1-0/+1
Fix __request_region() parameter kernel-doc notation and parameter name: Warning(linux-2.6.28-git10//kernel/resource.c:627): No description found for parameter 'flags' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-16cgroups: consolidate cgroup documentsLi Zefan1-1/+1
Move Documentation/cpusets.txt and Documentation/controllers/* to Documentation/cgroups/ Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com> Acked-by: Paul Menage <menage@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-15sched: sched_slice() fixletLin Ming1-1/+4
Mike's change: 0a582440f "sched: fix sched_slice())" broke group scheduling by forgetting to reload cfs_rq on each loop. This patch fixes aim7 regression and specjbb2005 regression becomes less than 1.5% on 8-core stokley. Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Tested-by: Jayson King <dev@jaysonking.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-15[IA64] dump stack on kernel unaligned warningsDoug Chapman1-0/+9
Often the cause of kernel unaligned access warnings is not obvious from just the ip displayed in the warning. This adds the option via proc to dump the stack in addition to the warning. The default is off (just display the 1 line warning). To enable the stack to be shown: echo 1 > /proc/sys/kernel/unaligned-dump-stack Signed-off-by: Doug Chapman <doug.chapman@hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2009-01-15sched: fix update_min_vruntimePeter Zijlstra1-1/+1
Impact: fix SCHED_IDLE latency problems OK, so we have 1 running task A (which is obviously curr and the tree is equally obviously empty). 'A' nicely chugs along, doing its thing, carrying min_vruntime along as it goes. Then some whacko speed freak SCHED_IDLE task gets inserted due to SMP balancing, which is very likely far right, in that case update_curr update_min_vruntime cfs_rq->rb_leftmost := true (the crazy task sitting in a tree) vruntime = se->vruntime and voila, min_vruntime is waaay right of where it ought to be. OK, so why did I write it like that to begin with... Aah, yes. Say we've just dequeued current schedule deactivate_task(prev) dequeue_entity update_min_vruntime Then we'll set vruntime = cfs_rq->min_vruntime; we find !cfs_rq->curr, but do find someone in the tree. Then we _must_ do vruntime = se->vruntime, because vruntime = min_vruntime(vruntime := cfs_rq->min_vruntime, se->vruntime) will not advance vruntime, and cause lags the other way around (which we fixed with that initial patch: 1af5f730fc1bf7c62ec9fb2d307206e18bf40a69 (sched: more accurate min_vruntime accounting). Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Tested-by: Mike Galbraith <efault@gmx.de> Acked-by: Mike Galbraith <efault@gmx.de> Cc: <stable@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-15sched: SCHED_OTHER vs SCHED_IDLE isolationPeter Zijlstra1-8/+22
Stronger SCHED_IDLE isolation: - no SCHED_IDLE buddies - never let SCHED_IDLE preempt on wakeup - always preempt SCHED_IDLE on wakeup - limit SLEEPER fairness for SCHED_IDLE. Signed-off-by: Mike Galbraith <efault@gmx.de> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-15sched: SCHED_IDLE weight changePeter Zijlstra1-2/+2
Increase the SCHED_IDLE weight from 2 to 3, this gives much more stable vruntime numbers. time advanced in 100ms: weight=2 64765.988352 67012.881408 88501.412352 weight=3 35496.181411 34130.971298 35497.411573 Signed-off-by: Mike Galbraith <efault@gmx.de> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-15sched: fix bandwidth validation for UID groupingPeter Zijlstra1-0/+7
Impact: make rt-limit tunables work again Mark Glines reported: > I've got an issue on x86-64 where I can't configure the system to allow > RT tasks for a non-root user. > > In 2.6.26.5, I was able to do the following to set things up nicely: > echo 450000 >/sys/kernel/uids/0/cpu_rt_runtime > echo 450000 >/sys/kernel/uids/1000/cpu_rt_runtime > > Seems like every value I try to echo into the /sys files returns EINVAL. For UID grouping we initialize the root group with infinite bandwidth which by default is actually more than the global limit, therefore the bandwidth check always fails. Because the root group is a phantom group (for UID grouping) we cannot runtime adjust it, therefore we let it reflect the global bandwidth settings. Reported-by: Mark Glines <mark@glines.org> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-15time-sched.c: tick_nohz_update_jiffies should be staticJaswinder Singh Rajput1-1/+1
Impact: cleanup, reduce kernel size a bit, avoid sparse warning Fixes sparse warning: kernel/time/tick-sched.c:137:6: warning: symbol 'tick_nohz_update_jiffies' was not declared. Should it be static? Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-01-15Merge branch 'syscalls' of git://git390.osdl.marist.edu/pub/scm/linux-2.6Linus Torvalds21-191/+169
* 'syscalls' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: (44 commits) [CVE-2009-0029] s390 specific system call wrappers [CVE-2009-0029] System call wrappers part 33 [CVE-2009-0029] System call wrappers part 32 [CVE-2009-0029] System call wrappers part 31 [CVE-2009-0029] System call wrappers part 30 [CVE-2009-0029] System call wrappers part 29 [CVE-2009-0029] System call wrappers part 28 [CVE-2009-0029] System call wrappers part 27 [CVE-2009-0029] System call wrappers part 26 [CVE-2009-0029] System call wrappers part 25 [CVE-2009-0029] System call wrappers part 24 [CVE-2009-0029] System call wrappers part 23 [CVE-2009-0029] System call wrappers part 22 [CVE-2009-0029] System call wrappers part 21 [CVE-2009-0029] System call wrappers part 20 [CVE-2009-0029] System call wrappers part 19 [CVE-2009-0029] System call wrappers part 18 [CVE-2009-0029] System call wrappers part 17 [CVE-2009-0029] System call wrappers part 16 [CVE-2009-0029] System call wrappers part 15 ...
2009-01-14Revert "kbuild: strip generated symbols from *.ko"Sam Ravnborg1-6/+10
This reverts commit ad7a953c522ceb496611d127e51e278bfe0ff483. And commit: ("allow stripping of generated symbols under CONFIG_KALLSYMS_ALL") 9bb482476c6c9d1ae033306440c51ceac93ea80c These stripping patches has caused a set of issues: 1) People have reported compatibility issues with binutils due to lack of support for `--strip-unneeded-symbols' with objcopy 2.15.92.0.2 Reported by: Wenji 2) ccache and distcc no longer works as expeced Reported by: Ted, Roland, + others 3) The installed modules increased a lot in size Reported by: Ted, Davej + others Reported-by: Wenji Huang <wenji.huang@oracle.com> Reported-by: "Theodore Ts'o" <tytso@mit.edu> Reported-by: Dave Jones <davej@redhat.com> Reported-by: Roland McGrath <roland@redhat.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2009-01-14kernel/up.c: omit it if SMP=y, USE_GENERIC_SMP_HELPERS=nAndrew Morton1-3/+2
Fix the sparc build - we were including `up.o' on SMP builds, when CONFIG_USE_GENERIC_SMP_HELPERS=n. Tested-by: Robert Reif <reif@earthlink.net> Fixed-by: Robert Reif <reif@earthlink.net> Cc: David Miller <davem@davemloft.net> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-01-14[CVE-2009-0029] System call wrappers part 32Heiko Carstens1-6/+5
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 31Heiko Carstens2-8/+7
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 30Heiko Carstens1-1/+1
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 27Heiko Carstens4-5/+5
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 26Heiko Carstens1-2/+2
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 24Heiko Carstens1-6/+7
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 23Heiko Carstens1-3/+3
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 19Heiko Carstens1-6/+6
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 18Heiko Carstens1-10/+11
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 17Heiko Carstens1-3/+3
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 09Heiko Carstens1-13/+8
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 08Heiko Carstens6-26/+19
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 07Heiko Carstens5-13/+13
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2009-01-14[CVE-2009-0029] System call wrappers part 06Heiko Carstens1-13/+13
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-29 01:53:33 +0300