This repository has been archived on 2026-03-14. You can view files and clone it, but cannot push or open issues or pull requests.

Peter Zijlstra facc43071c perf: Optimize event scheduling locking ...

Currently we only hold one ctx->lock at a time, which results in us
flipping back and forth between cpuctx->ctx.lock and task_ctx->lock.

Avoid this and gain large atomic regions by holding both locks. We
nest the task lock inside the cpu lock, since with task scheduling we
might have to change task ctx while holding the cpu ctx lock.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20110409192141.769881865@chello.nl
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2011-05-28 18:01:12 +02:00

..

debug

Fix common misspellings

2011-03-31 11:26:23 -03:00

events

perf: Optimize event scheduling locking

2011-05-28 18:01:12 +02:00

gcov

Merge branch 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6

2011-03-20 18:14:55 -07:00

irq

bitmap, irq: add smp_affinity_list interface to /proc/irq

2011-05-25 08:39:45 -07:00

power

PM: Allow drivers to allocate memory from .prepare() callbacks safely

2011-05-17 23:26:00 +02:00

time

hrtimers: Avoid touching inactive timer bases

2011-05-23 13:59:54 +02:00

trace

ftrace: Add internal recursive checks

2011-05-25 22:13:49 -04:00

.gitignore

…

acct.c

…

async.c

…

audit_tree.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

audit_watch.c

kill path_lookup()

2011-03-14 09:15:23 -04:00

audit.c

netlink: kill loginuid/sessionid/sid members from struct netlink_skb_parms

2011-03-03 10:55:40 -08:00

audit.h

audit: make functions static

2010-10-30 01:42:19 -04:00

auditfilter.c

netlink: kill loginuid/sessionid/sid members from struct netlink_skb_parms

2011-03-03 10:55:40 -08:00

auditsc.c

audit: acquire creds selectively to reduce atomic op overhead

2011-04-27 15:11:03 +02:00

backtracetest.c

…

bounds.c

memcg: remove direct page_cgroup-to-page pointer

2011-03-23 19:46:28 -07:00

capability.c

Merge branch 'master' into next

2011-05-19 18:51:57 +10:00

cgroup_freezer.c

cgroup_freezer: update_freezer_state() does incorrect state transitions

2010-10-27 18:03:08 -07:00

cgroup.c

cgroup,rcu: convert call_rcu(__free_css_id_cb) to kfree_rcu()

2011-05-07 22:50:47 -07:00

compat.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile

2011-05-25 15:35:32 -07:00

configs.c

llseek: automatically add .llseek fop

2010-10-15 15:53:27 +02:00

cpu.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

cpuset.c

sched: Dynamic sched_domain::level

2011-04-11 14:09:32 +02:00

crash_dump.c

crash_dump: export is_kdump_kernel to modules, consolidate elfcorehdr_addr, setup_elfcorehdr and saved_max_pfn

2011-03-23 19:47:19 -07:00

cred.c

Merge branch 'master' into next

2011-05-19 18:51:57 +10:00

delayacct.c

…

dma.c

…

elfcore.c

…

exec_domain.c

…

exit.c

Merge branch 'ptrace' of git://git.kernel.org/pub/scm/linux/kernel/git/oleg/misc

2011-05-20 13:33:21 -07:00

extable.c

extable, core_kernel_data(): Make sure all archs define _sdata

2011-05-20 08:56:56 +02:00

fork.c

mm: convert mm->cpu_vm_cpumask into cpumask_var_t

2011-05-25 08:39:21 -07:00

freezer.c

Freezer: Use SMP barriers

2011-05-17 23:19:17 +02:00

futex_compat.c

userns: user namespaces: convert several capable() calls

2011-03-23 19:47:08 -07:00

futex.c

futex: Set FLAGS_HAS_TIMEOUT during futex_wait restart setup

2011-04-15 16:34:32 +02:00

groups.c

userns: user namespaces: convert several capable() calls

2011-03-23 19:47:08 -07:00

hrtimer.c

hrtimers: Fix typo causing erratic timers

2011-05-25 15:31:58 -07:00

hung_task.c

watchdog, hung_task_timeout: Add Kconfig configurable default

2011-04-28 09:13:17 +02:00

irq_work.c

irq_work: Use per cpu atomics instead of regular atomics

2010-12-18 15:54:48 +01:00

itimer.c

…

jump_label.c

jump_label: Check entries limit in __jump_label_update

2011-05-25 19:56:36 -04:00

kallsyms.c

Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2011-03-25 17:52:22 -07:00

Kconfig.freezer

…

Kconfig.hz

…

Kconfig.locks

arch:Kconfig.locks Remove unused config option.

2011-04-10 17:01:05 +02:00

Kconfig.preempt

…

kexec.c

PM: Remove sysdev suspend, resume and shutdown operations

2011-05-11 21:37:15 +02:00

kfifo.c

kfifo: fix scatterlist usage

2010-10-01 10:50:58 -07:00

kmod.c

Merge branch 'next' into for-linus

2011-05-24 22:55:24 +10:00

kprobes.c

Merge branch 'for-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

2011-01-07 17:02:58 -08:00

ksysfs.c

kernel/ksysfs.c: expose file_caps_enabled in sysfs

2011-04-19 16:45:51 -07:00

kthread.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

latencytop.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

lockdep_internals.h

…

lockdep_proc.c

lockdep: Remove unused 'factor' variable from lockdep_stats_show()

2011-03-23 13:54:47 +01:00

lockdep_states.h

…

lockdep.c

lockdep: Remove cmpxchg to update nr_chain_hlocks

2011-04-22 11:06:59 +02:00

Makefile

hw breakpoints: Move to kernel/events/

2011-05-03 15:26:43 +02:00

module.c

Merge branch 'staging-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6

2011-05-23 12:49:28 -07:00

mutex-debug.c

mutex: Use p->on_cpu for the adaptive spin

2011-04-14 08:52:33 +02:00

mutex-debug.h

mutex: Use p->on_cpu for the adaptive spin

2011-04-14 08:52:33 +02:00

mutex.c

lockdep, mutex: provide mutex_lock_nest_lock

2011-05-25 08:39:17 -07:00

mutex.h

mutex: Use p->on_cpu for the adaptive spin

2011-04-14 08:52:33 +02:00

notifier.c

…

ns_cgroup.c

cgroup: notify ns_cgroup deprecated

2010-10-27 18:03:09 -07:00

nsproxy.c

ns: Introduce the setns syscall

2011-05-10 14:32:56 -07:00

padata.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

panic.c

move x86 specific oops=panic to generic code

2011-03-22 17:44:11 -07:00

params.c

params.c: Use new strtobool function to process boolean inputs

2011-05-19 16:55:28 +09:30

pid_namespace.c

pidns: call pid_ns_prepare_proc() from create_pid_namespace()

2011-03-23 19:46:58 -07:00

pid.c

next_pidmap: fix overflow condition

2011-04-18 10:35:30 -07:00

pm_qos_params.c

treewide: remove extra semicolons

2011-04-10 17:01:05 +02:00

posix-cpu-timers.c

hrtimers: Avoid touching inactive timer bases

2011-05-23 13:59:54 +02:00

posix-timers.c

posix-timers: RCU conversion

2011-05-24 12:10:51 +02:00

printk.c

printk: allocate kernel log buffer earlier

2011-05-25 08:39:48 -07:00

profile.c

profile: Use vzalloc() rather than vmalloc() & memset()

2010-10-31 09:47:26 +01:00

ptrace.c

ptrace: ptrace_resume() shouldn't wake up !TASK_TRACED thread

2011-05-25 19:20:21 +02:00

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

rcu: Use WARN_ON_ONCE for DEBUG_OBJECTS_RCU_HEAD warnings

2011-05-05 23:16:57 -07:00

rcutiny_plugin.h

rcu: Converge TINY_RCU expedited and normal boosting

2011-05-05 23:16:58 -07:00

rcutiny.c

sanitize <linux/prefetch.h> usage

2011-05-20 12:50:29 -07:00

rcutorture.c

rcu: mark rcutorture boosting callback as being on-stack

2011-05-05 23:16:57 -07:00

rcutree_plugin.h

Revert "rcu: Decrease memory-barrier usage based on semi-formal proof"

2011-05-19 23:25:29 +02:00

rcutree_trace.c

Revert "rcu: Decrease memory-barrier usage based on semi-formal proof"

2011-05-19 23:25:29 +02:00

rcutree.c

sanitize <linux/prefetch.h> usage

2011-05-20 12:50:29 -07:00

rcutree.h

Revert "rcu: Decrease memory-barrier usage based on semi-formal proof"

2011-05-19 23:25:29 +02:00

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

memcg: res_counter_read_u64(): fix potential races on 32-bit machines

2011-03-23 19:46:22 -07:00

resource.c

resources: add arch hook for preventing allocation in reserved areas

2010-12-17 10:01:09 -08:00

rtmutex_common.h

rtmutex: Simplify PI algorithm and make highest prio task get lock

2011-01-27 21:13:51 -05:00

rtmutex-debug.c

rtmutex: Simplify PI algorithm and make highest prio task get lock

2011-01-27 21:13:51 -05:00

rtmutex-debug.h

…

rtmutex-tester.c

rtmutex: tester: Remove the remaining BKL leftovers

2011-02-22 22:07:22 +01:00

rtmutex.c

rtmutex: Simplify PI algorithm and make highest prio task get lock

2011-01-27 21:13:51 -05:00

rtmutex.h

…

rwsem.c

…

sched_autogroup.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

sched_autogroup.h

sched, autogroup: Stop going ahead if autogroup is disabled

2011-02-23 11:33:59 +01:00

sched_clock.c

sched: Add some clock info to sched_debug

2010-11-23 10:29:08 +01:00

sched_cpupri.c

…

sched_cpupri.h

…

sched_debug.c

sched: Get rid of lock_depth

2011-04-24 13:18:38 +02:00

sched_fair.c

sched: Introduce SCHED_POWER_SCALE to scale cpu_power calculations

2011-05-20 14:16:50 +02:00

sched_features.h

sched: Move the second half of ttwu() to the remote cpu

2011-04-14 08:52:41 +02:00

sched_idletask.c

sched: Drop the rq argument to sched_class::select_task_rq()

2011-04-14 08:52:36 +02:00

sched_rt.c

Merge branches 'sched-core-for-linus' and 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2011-05-19 17:41:22 -07:00

sched_stats.h

sched_stat: Update sched_info_queue/dequeue() code comments

2010-10-24 13:29:01 +02:00

sched_stoptask.c

sched: Drop the rq argument to sched_class::select_task_rq()

2011-04-14 08:52:36 +02:00

sched.c

Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2011-05-23 12:53:48 -07:00

seccomp.c

…

semaphore.c

…

signal.c

signal: sys_pause() should check signal_pending()

2011-05-25 19:22:27 +02:00

smp.c

smp: move smp setup functions to kernel/smp.c

2011-03-22 17:44:11 -07:00

softirq.c

rcu: move TREE_RCU from softirq to kthread

2011-05-05 23:16:54 -07:00

spinlock.c

…

srcu.c

rcu: demote SRCU_SYNCHRONIZE_DELAY from kernel-parameter status

2011-01-14 04:56:49 -08:00

stacktrace.c

…

stop_machine.c

kthread: use kthread_create_on_node()

2011-03-22 17:44:01 -07:00

sys_ni.c

ipc: Add missing sys_ni entries for ipc/compat.c functions

2011-05-20 13:53:02 -07:00

sys.c

Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6

2011-05-19 18:24:11 -07:00

sysctl_binary.c

open-style analog of vfs_path_lookup()

2011-03-14 09:15:28 -04:00

sysctl_check.c

sysctl_check: drop dead code

2011-03-23 19:46:51 -07:00

sysctl.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile

2011-05-25 15:35:32 -07:00

taskstats.c

taskstats: use appropriate printk priority level

2011-03-23 19:47:14 -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

Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2011-03-15 18:53:35 -07:00

timeconst.pl

…

timer.c

Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2011-03-15 18:53:35 -07:00

tracepoint.c

jump label: Introduce static_branch() interface

2011-04-04 12:48:08 -04:00

tsacct.c

taskstats: use real microsecond granularity for CPU times

2010-10-27 18:03:17 -07:00

uid16.c

userns: user namespaces: convert several capable() calls

2011-03-23 19:47:08 -07:00

up.c

…

user_namespace.c

user_ns: improve the user_ns on-the-slab packaging

2011-01-13 08:03:18 -08:00

user-return-notifier.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

user.c

userns: add a user_namespace as creator/owner of uts_namespace

2011-03-23 19:46:59 -07:00

utsname_sysctl.c

…

utsname.c

ns proc: Add support for the uts namespace

2011-05-10 14:35:35 -07:00

wait.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

watchdog.c

kernel/watchdog.c: Use proper ANSI C prototypes

2011-05-23 21:07:40 -07:00

workqueue_sched.h

…

workqueue.c

Merge branch 'for-2.6.40' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

2011-05-24 11:53:42 -07:00