Paul E. McKenney b4be093fee rcu: Allow RCU quiescent-state forcing to be preempted ...

RCU quiescent-state forcing is currently carried out without preemption
points, which can result in excessive latency spikes on large systems
(many hundreds or thousands of CPUs).  This patch therefore inserts
a voluntary preemption point into force_qs_rnp(), which should greatly
reduce the magnitude of these spikes.

Reported-by: Mike Galbraith <mgalbraith@suse.de>
Reported-by: Dimitri Sivanich <sivanich@sgi.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>

2012-09-23 07:41:54 -07:00

..

debug

kernel/debug: Make use of KGDB_REASON_NMI

2012-07-31 08:16:43 -05:00

events

perf/trace: Add ability to set a target task for events

2012-07-31 17:02:05 +02:00

gcov

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irq

Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2012-08-03 10:56:44 -07:00

power

Revert "NMI watchdog: fix for lockup detector breakage on resume"

2012-08-08 20:49:45 +02:00

sched

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

2012-08-20 10:35:05 -07:00

time

time: Move ktime_t overflow checking into timespec_valid_strict

2012-09-01 10:24:48 -07:00

trace

tracing/syscalls: Fix perf syscall tracing when syscall_nr == -1

2012-08-17 15:19:46 -04:00

.gitignore

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acct.c

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async.c

[SCSI] async: make async_synchronize_full() flush all work regardless of domain

2012-07-20 09:07:37 +01:00

audit_tree.c

audit: clean up refcounting in audit-tree

2012-08-15 12:55:22 +02:00

audit_watch.c

get rid of kern_path_parent()

2012-07-14 16:35:02 +04:00

audit.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2012-08-01 10:26:23 -07:00

audit.h

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auditfilter.c

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auditsc.c

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backtracetest.c

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bounds.c

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capability.c

userns: Teach inode_capable to understand inodes whose uids map to other namespaces.

2012-05-15 14:59:24 -07:00

cgroup_freezer.c

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cgroup.c

Merge branch 'for-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup

2012-07-24 17:47:44 -07:00

compat.c

new helper: sigsuspend()

2012-05-21 23:52:30 -04:00

configs.c

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cpu_pm.c

kernel/cpu_pm.c: fix various typos

2012-05-31 17:49:27 -07:00

cpu.c

mm/hotplug: correctly setup fallback zonelists when creating new pgdat

2012-07-31 18:42:44 -07:00

cpuset.c

cpusets: Remove/update outdated comments

2012-07-24 13:53:28 +02:00

crash_dump.c

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cred.c

keys: kill task_struct->replacement_session_keyring

2012-05-23 22:11:41 -04:00

delayacct.c

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dma.c

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elfcore.c

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exec_domain.c

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exit.c

posix_types.h: Cleanup stale __NFDBITS and related definitions

2012-07-26 13:36:43 -07:00

extable.c

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fork.c

uprobes: Fix mmap_region()'s mm->mm_rb corruption if uprobe_mmap() fails

2012-08-21 11:48:12 +02:00

freezer.c

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futex_compat.c

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futex.c

futex: Forbid uaddr == uaddr2 in futex_wait_requeue_pi()

2012-07-24 16:02:57 +02:00

groups.c

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hrtimer.c

hrtimer: Update hrtimer base offsets each hrtimer_interrupt

2012-07-11 23:34:39 +02:00

hung_task.c

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irq_work.c

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itimer.c

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jump_label.c

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kallsyms.c

vsprintf: fix %ps on non symbols when using kallsyms

2012-05-29 16:22:32 -07:00

kcmp.c

syscalls, x86: add __NR_kcmp syscall

2012-05-31 17:49:32 -07:00

Kconfig.freezer

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Kconfig.hz

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Kconfig.locks

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Kconfig.preempt

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kexec.c

kdump: append newline to the last lien of vmcoreinfo note

2012-07-30 17:25:20 -07:00

kfifo.c

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kmod.c

kmod: avoid deadlock from recursive kmod call

2012-07-30 17:25:20 -07:00

kprobes.c

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ksysfs.c

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kthread.c

kthread_worker: reimplement flush_kthread_work() to allow freeing the work item being executed

2012-07-22 10:15:28 -07:00

latencytop.c

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lglock.c

brlocks/lglocks: turn into functions

2012-05-29 23:28:41 -04:00

lockdep_internals.h

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lockdep_proc.c

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lockdep_states.h

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lockdep.c

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Makefile

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2012-06-01 10:34:35 -07:00

module.c

Guard check in module loader against integer overflow

2012-05-23 22:28:53 +09:30

mutex-debug.c

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mutex-debug.h

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mutex.c

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mutex.h

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notifier.c

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nsproxy.c

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padata.c

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panic.c

panic: fix a possible deadlock in panic()

2012-07-30 17:25:13 -07:00

params.c

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pid_namespace.c

pidns: guarantee that the pidns init will be the last pidns process reaped

2012-06-20 14:39:36 -07:00

pid.c

mm: add a low limit to alloc_large_system_hash

2012-05-24 00:28:21 -04:00

posix-cpu-timers.c

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posix-timers.c

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printk.c

printk: Fix calculation of length used to discard records

2012-08-12 21:25:50 +03:00

profile.c

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ptrace.c

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range.c

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rcu.h

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rcupdate.c

rcu: Consolidate tree/tiny __rcu_read_{,un}lock() implementations

2012-07-02 12:34:23 -07:00

rcutiny_plugin.h

rcu: Fix code-style issues involving "else"

2012-07-06 06:01:48 -07:00

rcutiny.c

rcu: Fix rcu_is_cpu_idle() #ifdef in TINY_RCU

2012-07-02 12:34:25 -07:00

rcutorture.c

rcu: Fix broken strings in RCU's source code.

2012-07-06 06:01:49 -07:00

rcutree_plugin.h

rcu: Move quiescent-state forcing into kthread

2012-09-23 07:41:54 -07:00

rcutree_trace.c

rcu: Fix broken strings in RCU's source code.

2012-07-06 06:01:49 -07:00

rcutree.c

rcu: Allow RCU quiescent-state forcing to be preempted

2012-09-23 07:41:54 -07:00

rcutree.h

rcu: Move quiescent-state forcing into kthread

2012-09-23 07:41:54 -07:00

relay.c

splice: fix racy pipe->buffers uses

2012-06-13 21:16:42 +02:00

res_counter.c

rescounters: add res_counter_uncharge_until()

2012-05-29 16:22:27 -07:00

resource.c

resource: make sure requested range is included in the root range

2012-07-30 17:25:21 -07:00

rtmutex_common.h

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rtmutex-debug.c

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rtmutex-debug.h

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rtmutex-tester.c

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rtmutex.c

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rtmutex.h

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rwsem.c

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seccomp.c

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semaphore.c

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signal.c

signal: make sure we don't get stopped with pending task_work

2012-07-22 23:57:54 +04:00

smp.c

smp: Remove ipi_call_lock[_irq]()/ipi_call_unlock[_irq]()

2012-06-05 17:27:14 +02:00

smpboot.c

smpboot, idle: Fix comment mismatch over idle_threads_init()

2012-05-24 22:58:08 +02:00

smpboot.h

smpboot: Remove leftover declaration

2012-06-11 15:07:52 +02:00

softirq.c

mm: allow PF_MEMALLOC from softirq context

2012-07-31 18:42:45 -07:00

spinlock.c

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srcu.c

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stacktrace.c

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stop_machine.c

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sys_ni.c

syscalls, x86: add __NR_kcmp syscall

2012-05-31 17:49:32 -07:00

sys.c

kernel/sys.c: avoid argv_free(NULL)

2012-07-30 17:25:13 -07:00

sysctl_binary.c

mm: prepare for removal of obsolete /proc/sys/vm/nr_pdflush_threads

2012-07-31 18:42:40 -07:00

sysctl.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2012-08-01 10:26:23 -07:00

task_work.c

task_work: add a scheduling point in task_work_run()

2012-08-21 09:11:44 -07:00

taskstats.c

taskstats: check nla_reserve() return

2012-07-30 17:25:21 -07:00

test_kprobes.c

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time.c

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timeconst.pl

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timer.c

alpha: take a bunch of syscalls into osf_sys.c

2012-08-19 08:41:19 -07:00

tracepoint.c

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tsacct.c

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uid16.c

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up.c

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user_namespace.c

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user-return-notifier.c

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user.c

userns: Silence silly gcc warning.

2012-05-19 15:44:40 -06:00

utsname_sysctl.c

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utsname.c

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wait.c

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watchdog.c

Revert "NMI watchdog: fix for lockup detector breakage on resume"

2012-08-08 20:49:45 +02:00

workqueue_sched.h

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workqueue.c

workqueue: fix spurious CPU locality WARN from process_one_work()

2012-07-22 10:16:34 -07:00