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Pan Xinhui b193049375 locking/pv-qspinlock: Use cmpxchg_release() in __pv_queued_spin_unlock() 
cmpxchg_release() is more lighweight than cmpxchg() on some archs(e.g.
PPC), moreover, in __pv_queued_spin_unlock() we only needs a RELEASE in
the fast path(pairing with *_try_lock() or *_lock()). And the slow path
has smp_store_release too. So it's safe to use cmpxchg_release here.

Suggested-by:  Boqun Feng <[email protected]>
Signed-off-by: Pan Xinhui <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
2016-09-22 15:25:51 +02:00
..
bpf
bpf: fix bpf_skb_in_cgroup helper naming
2016-08-12 21:53:33 -07:00
configs
kconfig: tinyconfig: provide whole choice blocks to avoid warnings
2016-09-01 17:52:01 -07:00
debug
…
events
perf/core: Fix aux_mmap_count vs aux_refcount order
2016-09-10 11:15:36 +02:00
gcov
gcov: add support for gcc version >= 6
2016-07-15 14:54:27 +09:00
irq
genirq/affinity: Use get/put_online_cpus around cpumask operations
2016-08-22 11:22:44 +02:00
livepatch
modules: add ro_after_init support
2016-08-04 10:16:55 +09:30
locking
locking/pv-qspinlock: Use cmpxchg_release() in __pv_queued_spin_unlock()
2016-09-22 15:25:51 +02:00
power
PM / QoS: avoid calling cancel_delayed_work_sync() during early boot
2016-09-05 15:07:53 +02:00
printk
printk/nmi: avoid direct printk()-s from __printk_nmi_flush()
2016-09-01 17:52:01 -07:00
rcu
locking, rcu, cgroup: Avoid synchronize_sched() in __cgroup_procs_write()
2016-08-18 15:36:59 +02:00
sched
sched/core: Fix a race between try_to_wake_up() and a woken up task
2016-09-05 11:57:53 +02:00
time
tick/nohz: Fix softlockup on scheduler stalls in kvm guest
2016-09-02 10:25:40 +02:00
trace
block: Fix secure erase
2016-08-16 09:16:51 -06:00
.gitignore
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acct.c
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async.c
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audit_fsnotify.c
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audit_tree.c
audit: cleanup prune_tree_thread
2016-04-04 09:46:47 -04:00
audit_watch.c
Merge branch 'stable-4.8' of git://git.infradead.org/users/pcmoore/audit
2016-09-01 15:55:56 -07:00
audit.c
Merge branch 'stable-4.8' of git://git.infradead.org/users/pcmoore/audit
2016-07-29 17:54:17 -07:00
audit.h
Merge branch 'stable-4.8' of git://git.infradead.org/users/pcmoore/audit
2016-07-29 17:54:17 -07:00
auditfilter.c
audit: add fields to exclude filter by reusing user filter
2016-06-27 11:01:00 -04:00
auditsc.c
Merge branch 'stable-4.8' of git://git.infradead.org/users/pcmoore/audit
2016-07-29 17:54:17 -07:00
backtracetest.c
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bounds.c
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capability.c
kernel: Add noaudit variant of ns_capable()
2016-06-06 20:16:18 +10:00
cgroup_freezer.c
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cgroup_pids.c
cgroup: Use lld instead of ld when printing pids controller events_limit
2016-06-21 15:03:36 -04:00
cgroup.c
Merge branch 'locking/urgent' into locking/core, to pick up fixes
2016-09-22 15:21:48 +02:00
compat.c
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configs.c
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context_tracking.c
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cpu_pm.c
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cpu.c
timers/core: Correct callback order during CPU hot plug
2016-07-28 18:56:22 +02:00
cpuset.c
cpuset: make sure new tasks conform to the current config of the cpuset
2016-08-09 23:58:01 -04:00
crash_dump.c
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cred.c
cred: Reject inodes with invalid ids in set_create_file_as()
2016-06-30 18:05:09 -05:00
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
mm, mempolicy: task->mempolicy must be NULL before dropping final reference
2016-09-01 17:52:01 -07:00
extable.c
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fork.c
Merge branch 'akpm' (patches from Andrew)
2016-09-01 18:23:22 -07:00
freezer.c
freezer, oom: check TIF_MEMDIE on the correct task
2016-07-28 16:07:41 -07:00
futex_compat.c
…
futex.c
futex: Add some more function commentry
2016-09-05 17:20:18 +02:00
groups.c
…
hung_task.c
locking/hung_task: Show all locks
2016-08-24 12:16:13 +02:00
irq_work.c
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jump_label.c
Merge tag 'powerpc-4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2016-08-05 09:00:54 -04:00
kallsyms.c
kallsyms: add support for relative offsets in kallsyms address table
2016-03-15 16:55:16 -07:00
kcmp.c
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Kconfig.freezer
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Kconfig.hz
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Kconfig.locks
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Kconfig.preempt
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kcov.c
kernel/kcov: unproxify debugfs file's fops
2016-06-15 04:56:35 -07:00
kexec_core.c
kexec: add restriction on kexec_load() segment sizes
2016-08-02 19:35:31 -04:00
kexec_file.c
kexec: fix double-free when failing to relocate the purgatory
2016-09-01 17:52:01 -07:00
kexec_internal.h
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kexec.c
kexec: allow architectures to override boot mapping
2016-08-02 19:35:27 -04:00
kmod.c
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kprobes.c
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ksysfs.c
kexec: add a kexec_crash_loaded() function
2016-08-02 19:35:30 -04:00
kthread.c
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latencytop.c
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Makefile
ELF/MIPS build fix
2016-05-23 17:04:14 -07:00
membarrier.c
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memremap.c
mm: fix cache mode of dax pmd mappings
2016-09-09 17:34:46 -07:00
module_signing.c
KEYS: Move the point of trust determination to __key_link()
2016-04-11 22:43:43 +01:00
module-internal.h
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module.c
Merge tag 'modules-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux
2016-08-04 09:14:38 -04:00
notifier.c
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nsproxy.c
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padata.c
kernel/padata.c: hide unused functions
2016-05-19 19:12:14 -07:00
panic.c
kexec: use core_param for crash_kexec_post_notifiers boot option
2016-08-02 19:35:29 -04:00
params.c
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pid_namespace.c
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pid.c
remove lots of IS_ERR_VALUE abuses
2016-05-27 15:26:11 -07:00
profile.c
profile: Convert to hotplug state machine
2016-07-15 10:41:42 +02:00
ptrace.c
tree-wide: replace config_enabled() with IS_ENABLED()
2016-08-04 08:50:07 -04:00
range.c
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reboot.c
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relay.c
relay: add global mode support for buffer-only channels
2016-08-02 19:35:41 -04:00
resource.c
/proc/iomem: only expose physical resource addresses to privileged users
2016-04-14 12:56:09 -07:00
seccomp.c
seccomp: Fix tracer exit notifications during fatal signals
2016-08-30 16:12:46 -07:00
signal.c
signals: Use hrtimer for sigtimedwait()
2016-07-07 10:35:07 +02:00
smp.c
Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-07-29 13:55:30 -07:00
smpboot.c
cpu/hotplug: Unpark smpboot threads from the state machine
2016-03-01 20:36:56 +01:00
smpboot.h
cpu/hotplug: Create hotplug threads
2016-03-01 20:36:56 +01:00
softirq.c
arch, ftrace: for KASAN put hard/soft IRQ entries into separate sections
2016-03-25 16:37:42 -07:00
stacktrace.c
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stop_machine.c
stop_machine: Touch_nmi_watchdog() after MULTI_STOP_PREPARE
2016-07-27 11:12:11 +02:00
sys_ni.c
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sys.c
prctl: make PR_SET_THP_DISABLE wait for mmap_sem killable
2016-05-23 17:04:14 -07:00
sysctl_binary.c
kernel/sysctl_binary.c: use generic UUID library
2016-05-20 17:58:30 -07:00
sysctl.c
sysctl: handle error writing UINT_MAX to u32 fields
2016-08-26 17:39:35 -07:00
task_work.c
task_work: use READ_ONCE/lockless_dereference, avoid pi_lock if !task_works
2016-08-02 19:35:02 -04:00
taskstats.c
taskstats: use the libnl API to align nlattr on 64-bit
2016-04-23 20:13:25 -04:00
test_kprobes.c
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torture.c
torture: Stop onoff task if there is only one cpu
2016-06-14 16:03:28 -07:00
tracepoint.c
kernel/...: convert pr_warning to pr_warn
2016-03-22 15:36:02 -07:00
tsacct.c
time, acct: Drop irq save & restore from __acct_update_integrals()
2016-02-29 09:53:09 +01:00
uid16.c
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up.c
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user_namespace.c
fs: Limit file caps to the user namespace of the super block
2016-06-24 10:40:31 -05:00
user-return-notifier.c
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user.c
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utsname_sysctl.c
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utsname.c
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watchdog.c
Revert "perf/x86/intel, watchdog: Switch NMI watchdog to ref cycles on x86"
2016-07-10 20:58:36 +02:00
workqueue_internal.h
sched/core: Get rid of 'cpu' argument in wq_worker_sleeping()
2016-03-02 10:28:47 -05:00
workqueue.c
Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-07-29 13:55:30 -07:00