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e33078baa4
kernel_optimize_test/kernel
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Paul Turner e33078baa4 sched: Fix update_cfs_load() synchronization 
Using cfs_rq->nr_running is not sufficient to synchronize update_cfs_load with
the put path since nr_running accounting occurs at deactivation.

It's also not safe to make the removal decision based on load_avg as this fails
with both high periods and low shares.  Resolve this by clipping history after
4 periods without activity.

Note: the above will always occur from update_shares() since in the
last-task-sleep-case that task will still be cfs_rq->curr when update_cfs_load
is called.

Signed-off-by: Paul Turner <pjt@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20101115234937.933428187@google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-11-18 13:27:48 +01:00
..
debug debug_core,x86,blackfin: Clean up hw debug disable API 2010-10-29 13:14:41 -05:00
gcov llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
irq Merge commit 'v2.6.37-rc2' into sched/core 2010-11-18 13:22:26 +01:00
power use clear_page()/copy_page() in favor of memset()/memcpy() on whole pages 2010-10-26 16:52:13 -07:00
time ntp: Clamp PLL update interval 2010-09-09 20:48:37 +02:00
trace Merge commit 'v2.6.37-rc2' into sched/core 2010-11-18 13:22:26 +01:00
.gitignore
acct.c pass a struct path to vfs_statfs 2010-08-09 16:48:42 -04:00
async.c
audit_tree.c in untag_chunk() we need to do alloc_chunk() a bit earlier 2010-10-30 02:18:32 -04:00
audit_watch.c audit: make functions static 2010-10-30 01:42:19 -04:00
audit.c audit: Use rcu for task lookup protection 2010-10-30 08:45:42 -04:00
audit.h audit: make functions static 2010-10-30 01:42:19 -04:00
auditfilter.c Audit: add support to match lsm labels on user audit messages 2010-10-30 01:41:57 -04:00
auditsc.c audit mmap 2010-10-30 08:45:43 -04:00
backtracetest.c
bounds.c
capability.c
cgroup_freezer.c cgroup_freezer: update_freezer_state() does incorrect state transitions 2010-10-27 18:03:08 -07:00
cgroup.c convert cgroup and cpuset 2010-10-29 04:17:06 -04:00
compat.c compat: Make compat_alloc_user_space() incorporate the access_ok() 2010-09-14 16:08:45 -07:00
configs.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
cpu.c sched: Simplify cpu-hot-unplug task migration 2010-11-18 13:27:46 +01:00
cpuset.c convert cgroup and cpuset 2010-10-29 04:17:06 -04:00
cred.c signals: move cred_guard_mutex from task_struct to signal_struct 2010-10-27 18:03:12 -07:00
delayacct.c
dma.c
elfcore.c
exec_domain.c sys_personality: remove the bogus checks in sys_personality()->__set_personality() path 2010-08-09 20:45:05 -07:00
exit.c posix-cpu-timers: workaround to suppress the problems with mt exec 2010-11-05 14:16:03 -07:00
extable.c
fork.c signals: move cred_guard_mutex from task_struct to signal_struct 2010-10-27 18:03:12 -07:00
freezer.c
futex_compat.c futex: Change 3rd arg of fetch_robust_entry() to unsigned int* 2010-09-18 12:19:21 +02:00
futex.c new helper: ihold() 2010-10-25 21:26:11 -04:00
groups.c kernel/groups.c: fix integer overflow in groups_search 2010-09-09 18:57:24 -07:00
hrtimer.c hrtimer: Preserve timer state in remove_hrtimer() 2010-10-14 13:29:59 +02:00
hung_task.c lockup detector: Fix grammar by adding a missing "to" in the comments 2010-08-17 09:11:52 +02:00
hw_breakpoint.c perf, hw_breakpoint: Fix crash in hw_breakpoint creation 2010-10-18 19:58:55 +02:00
irq_work.c irq_work: Add generic hardirq context callbacks 2010-10-18 19:58:50 +02:00
itimer.c
jump_label.c jump label: Make arch_jump_label_text_poke_early() optional 2010-10-29 12:56:13 -04:00
kallsyms.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kexec.c use clear_page()/copy_page() in favor of memset()/memcpy() on whole pages 2010-10-26 16:52:13 -07:00
kfifo.c kfifo: fix scatterlist usage 2010-10-01 10:50:58 -07:00
kmod.c Make do_execve() take a const filename pointer 2010-08-17 18:07:43 -07:00
kprobes.c jump label: Fix error with preempt disable holding mutex 2010-10-29 12:55:55 -04:00
ksysfs.c
kthread.c sched: Make sched_param argument static in sched_setscheduler() callers 2010-10-23 17:56:48 +02:00
latencytop.c latencytop: fix per task accumulator 2010-11-12 07:55:31 -08:00
lockdep_internals.h
lockdep_proc.c
lockdep_states.h
lockdep.c lockdep: Check the depth of subclass 2010-10-18 18:44:26 +02:00
Makefile Merge branch 'core-memblock-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-10-21 18:52:11 -07:00
module.c (trivial) Fix compiler warning in kernel/modules.c 2010-10-27 20:33:05 +10:30
mutex-debug.c
mutex-debug.h
mutex.c mutex: Fix annotations to include it in kernel-locking docbook 2010-09-03 08:19:51 +02:00
mutex.h
notifier.c
ns_cgroup.c cgroup: notify ns_cgroup deprecated 2010-10-27 18:03:09 -07:00
nsproxy.c
padata.c
panic.c lib/bug.c: add oops end marker to WARN implementation 2010-08-11 08:59:22 -07:00
params.c param: locking for kernel parameters 2010-08-11 23:04:20 +09:30
perf_event.c perf_events: Fix time tracking in samples 2010-11-10 22:58:39 +01:00
pid_namespace.c
pid.c Add RCU check for find_task_by_vpid(). 2010-08-19 17:18:02 -07:00
pm_qos_params.c Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-10-24 13:41:39 -07:00
posix-cpu-timers.c Merge branch 'writable_limits' of git://decibel.fi.muni.cz/~xslaby/linux 2010-08-10 12:07:51 -07:00
posix-timers.c
printk.c capabilities/syslog: open code cap_syslog logic to fix build failure 2010-11-15 15:40:01 -08:00
profile.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
ptrace.c signals: move cred_guard_mutex from task_struct to signal_struct 2010-10-27 18:03:12 -07:00
range.c kernel/range.c: fix clean_sort_range() for the case of full array 2010-11-12 07:55:31 -08:00
rcupdate.c Merge branch 'rcu/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-2.6-rcu into core/rcu 2010-10-07 09:43:11 +02:00
rcutiny_plugin.h rcu: performance fixes to TINY_PREEMPT_RCU callback checking 2010-08-27 10:51:17 -07:00
rcutiny.c rcu: Add a TINY_PREEMPT_RCU 2010-08-20 08:55:00 -07:00
rcutorture.c rcu: fix sparse errors in rcutorture.c 2010-09-23 09:16:42 -07:00
rcutree_plugin.h rcu: fix _oddness handling of verbose stall warnings 2010-09-02 16:15:30 -07:00
rcutree_trace.c rcu: Add tracing data to support queueing models 2010-09-23 09:16:53 -07:00
rcutree.c rcu: using ACCESS_ONCE() to observe the jiffies_stall/rnp->qsmask value 2010-10-07 10:41:06 -07:00
rcutree.h rcu: Add tracing data to support queueing models 2010-09-23 09:16:53 -07:00
relay.c Clean up relay_alloc_page_array() slightly by using vzalloc rather than vmalloc and memset 2010-11-05 08:21:34 -07:00
res_counter.c
resource.c Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 2010-10-28 11:59:52 -07:00
rtmutex_common.h
rtmutex-debug.c
rtmutex-debug.h
rtmutex-tester.c rtmutex-tester: make it build without BKL 2010-10-19 11:29:56 +02:00
rtmutex.c
rtmutex.h
rwsem.c
sched_clock.c
sched_cpupri.c
sched_cpupri.h
sched_debug.c sched: Rewrite tg_shares_up) 2010-11-18 13:27:46 +01:00
sched_fair.c sched: Fix update_cfs_load() synchronization 2010-11-18 13:27:48 +01:00
sched_features.h sched: Rewrite tg_shares_up) 2010-11-18 13:27:46 +01:00
sched_idletask.c
sched_rt.c sched: Implement on-demand (active) cfs_rq list 2010-11-18 13:27:47 +01:00
sched_stats.h sched_stat: Update sched_info_queue/dequeue() code comments 2010-10-24 13:29:01 +02:00
sched_stoptask.c sched: Create special class for stop/migrate work 2010-10-18 18:41:58 +02:00
sched.c sched: Fix update_cfs_load() synchronization 2010-11-18 13:27:48 +01:00
seccomp.c
semaphore.c
signal.c signals: annotate lock context change on ptrace_stop() 2010-10-27 18:03:12 -07:00
smp.c Typedef SMP call function pointer 2010-10-27 17:28:36 +01:00
softirq.c Merge commit 'v2.6.37-rc2' into sched/core 2010-11-18 13:22:26 +01:00
spinlock.c
srcu.c kernel: Remove undead ifdef CONFIG_DEBUG_LOCK_ALLOC 2010-09-23 09:14:51 -07:00
stacktrace.c
stop_machine.c stop_machine: convert cpu notifier to return encapsulate errno value 2010-10-26 16:52:15 -07:00
sys_ni.c powerpc: define a compat_sys_recv cond_syscall 2010-09-23 17:03:55 +10:00
sys.c pid: make setpgid() system call use RCU read-side critical section 2010-08-31 17:00:18 -07:00
sysctl_binary.c
sysctl_check.c sysctl: min/max bounds are optional 2010-10-15 14:42:24 -07:00
sysctl.c sched: Rewrite tg_shares_up) 2010-11-18 13:27:46 +01:00
taskstats.c taskstats: split fill_pid function 2010-10-27 18:03:17 -07:00
test_kprobes.c kprobes: Fix selftest to clear flags field for reusing probes 2010-10-14 08:55:27 +02:00
time.c
timeconst.pl
timer.c irq_work: Add generic hardirq context callbacks 2010-10-18 19:58:50 +02:00
tracepoint.c jump_label: Use more consistent naming 2010-10-18 19:58:56 +02:00
tsacct.c taskstats: use real microsecond granularity for CPU times 2010-10-27 18:03:17 -07:00
uid16.c
up.c
user_namespace.c
user-return-notifier.c
user.c kernel/user.c: add lock release annotation on free_user() 2010-10-26 16:52:15 -07:00
utsname_sysctl.c
utsname.c
wait.c docbook: add more wait/wake/completion to device-drivers docbook 2010-10-26 17:32:41 -07:00
watchdog.c Merge commit 'v2.6.37-rc2' into sched/core 2010-11-18 13:22:26 +01:00
workqueue_sched.h
workqueue.c workqueues: s/ON_STACK/ONSTACK/ 2010-10-26 16:52:14 -07:00