Peter Zijlstra bf378d341e perf: Fix perf ring buffer memory ordering ... The PPC64 people noticed a missing memory barrier and crufty old comments in the perf ring buffer code. So update all the comments and add the missing barrier. When the architecture implements local_t using atomic_long_t there will be double barriers issued; but short of introducing more conditional barrier primitives this is the best we can do. Reported-by: Victor Kaplansky <victork@il.ibm.com> Tested-by: Victor Kaplansky <victork@il.ibm.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: michael@ellerman.id.au Cc: Paul McKenney <paulmck@linux.vnet.ibm.com> Cc: Michael Neuling <mikey@neuling.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: anton@samba.org Cc: benh@kernel.crashing.org Link: http://lkml.kernel.org/r/20131025173749.GG19466@laptop.lan Signed-off-by: Ingo Molnar <mingo@kernel.org>		2013-10-29 12:01:19 +01:00
..
cpu	idle: Enable interrupts in the weak arch_cpu_idle() implementation	2013-06-14 23:01:05 +02:00
debug	kgdb/sysrq: fix inconstistent help message of sysrq key	2013-04-30 17:04:10 -07:00
events	perf: Fix perf ring buffer memory ordering	2013-10-29 12:01:19 +01:00
gcov	kernel: replace strict_strto*() with kstrto*()	2013-09-12 15:38:03 -07:00
irq	Remove GENERIC_HARDIRQ config option	2013-09-13 15:09:52 +02:00
power	PM / hibernate: Move software_resume to late_initcall_sync	2013-10-25 01:58:49 +02:00
printk	TTY/Serial driver patches for 3.12-rc1	2013-09-03 11:38:36 -07:00
sched	sched/balancing: Fix cfs_rq->task_h_load calculation	2013-09-20 11:59:39 +02:00
time	clockevents: Sanitize ticks to nsec conversion	2013-10-23 12:51:21 +02:00
trace	Not much changes for the 3.12 merge window. The major tracing changes	2013-09-09 14:42:15 -07:00
.gitignore	kernel/hz.bc: ignore.	2013-04-22 07:09:06 -07:00
acct.c	fs: Fix hang with BSD accounting on frozen filesystem	2013-05-04 14:57:58 -04:00
async.c	async: rename and redefine async_func_ptr	2013-03-12 13:59:14 -07:00
audit.c	audit: fix endless wait in audit_log_start()	2013-09-24 17:00:26 -07:00
audit.h	audit: fix mq_open and mq_unlink to add the MQ root as a hidden parent audit_names record	2013-07-09 10:33:19 -07:00
audit_tree.c	kernel/audit_tree.c:audit_add_tree_rule(): protect `rule' from kill_rules()	2013-06-12 16:29:46 -07:00
audit_watch.c
auditfilter.c	audit: Fix decimal constant description	2013-07-09 10:33:19 -07:00
auditsc.c	audit: fix mq_open and mq_unlink to add the MQ root as a hidden parent audit_names record	2013-07-09 10:33:19 -07:00
backtracetest.c
bounds.c
capability.c	xfs: update for v3.12-rc1	2013-09-09 11:19:09 -07:00
cgroup.c	Merge branch 'for-3.12-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2013-10-22 08:20:34 +01:00
cgroup_freezer.c	cgroup: make css_for_each_descendant() and friends include the origin css in the iteration	2013-08-08 20:11:27 -04:00
compat.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal	2013-05-01 07:21:43 -07:00
configs.c	proc: Supply PDE attribute setting accessor functions	2013-05-01 17:29:18 -04:00
context_tracking.c	arm: Fix build error with context tracking calls	2013-09-27 17:59:47 +02:00
cpu.c	ACPI / processor: Acquire writer lock to update CPU maps	2013-08-13 12:20:16 +02:00
cpu_pm.c
cpuset.c	Merge branch 'for-3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2013-09-03 18:25:03 -07:00
crash_dump.c
cred.c
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c	ptrace: revert "Prepare to fix racy accesses on task breakpoints"	2013-07-09 10:33:26 -07:00
extable.c	extable: skip sorting if the table is empty	2013-09-11 15:58:25 -07:00
fork.c	Merge git://git.kvack.org/~bcrl/aio-next	2013-09-13 10:55:58 -07:00
freezer.c	freezer: set PF_SUSPEND_TASK flag on tasks that call freeze_processes	2013-07-30 14:05:06 +02:00
futex.c	futex: Use freezable blocking call	2013-06-25 23:11:19 +02:00
futex_compat.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal	2013-02-23 18:50:11 -08:00
groups.c	userns: Kill nsown_capable it makes the wrong thing easy	2013-08-30 23:44:11 -07:00
hrtimer.c	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00
hung_task.c	hung_task debugging: Print more info when reporting the problem	2013-08-02 11:02:42 +02:00
irq_work.c	Merge branch 'nohz/printk-v8' into irq/core	2013-02-05 00:48:46 +01:00
itimer.c
jump_label.c	jump_label: Split jumplabel ratelimit	2013-08-09 07:53:54 -07:00
kallsyms.c	kernel: kallsyms: memory override issue, need check destination buffer length	2013-04-15 15:17:26 +09:30
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks	locking: Fix copy/paste errors of "ARCH_INLINE_*_UNLOCK_BH"	2013-05-28 08:50:00 +02:00
Kconfig.preempt
kexec.c	kexec: remove unnecessary return	2013-09-11 15:59:10 -07:00
kmod.c	kernel/kmod.c: check for NULL in call_usermodehelper_exec()	2013-09-30 14:31:02 -07:00
kprobes.c	kprobes: allow to specify custom allocator for insn caches	2013-09-11 15:58:52 -07:00
ksysfs.c	kernel: replace strict_strto*() with kstrto*()	2013-09-12 15:38:03 -07:00
kthread.c	kthread: implement probe_kthread_data()	2013-04-30 17:04:02 -07:00
latencytop.c
lglock.c	lglock: Update lockdep annotations to report recursive local locks	2013-07-12 13:51:19 +02:00
lockdep.c	lockdep: remove task argument from debug_check_no_locks_held	2013-05-12 14:16:21 +02:00
lockdep_internals.h
lockdep_proc.c
lockdep_states.h
Makefile	Remove GENERIC_HARDIRQ config option	2013-09-13 15:09:52 +02:00
modsign_certificate.S	CONFIG_SYMBOL_PREFIX: cleanup.	2013-03-15 15:09:43 +10:30
modsign_pubkey.c	kernel/modsign_pubkey.c: fix init const for module signing code	2013-09-11 15:58:21 -07:00
module-internal.h
module.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-09-05 08:50:26 -07:00
module_signing.c
mutex-debug.c
mutex-debug.h
mutex.c	mutex: Avoid gcc version dependent __builtin_constant_p() usage	2013-10-18 21:58:54 +02:00
mutex.h
notifier.c
nsproxy.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2013-09-07 14:35:32 -07:00
padata.c	padata - Register hotcpu notifier after initialization	2013-08-29 14:37:59 +10:00
panic.c	panic: call panic handlers before kmsg_dump	2013-09-11 15:59:30 -07:00
params.c	kernel/params: fix handling of signed integer types	2013-09-28 12:35:52 -07:00
pid.c	pidns: fix free_pid() to handle the first fork failure	2013-09-30 14:31:03 -07:00
pid_namespace.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2013-09-07 14:35:32 -07:00
posix-cpu-timers.c	posix_timers: fix racy timer delta caching on task exit	2013-07-03 16:54:42 +02:00
posix-timers.c	posix-timers: Remove unused variable	2013-04-18 12:51:19 +02:00
profile.c	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00
ptrace.c	__ptrace_may_access() should not deny sub-threads	2013-09-11 15:59:01 -07:00
range.c	range: Do not add new blank slot with add_range_with_merge	2013-06-18 11:32:10 -05:00
rcu.h	rcu: Make call_rcu() leak callbacks for debug-object errors	2013-08-18 17:40:03 -07:00
rcupdate.c	Not much changes for the 3.12 merge window. The major tracing changes	2013-09-09 14:42:15 -07:00
rcutiny.c	rcu: Add const annotation to char * for RCU tracepoints and functions	2013-07-29 17:07:49 -04:00
rcutiny_plugin.h	rcu: Add const annotation to char * for RCU tracepoints and functions	2013-07-29 17:07:49 -04:00
rcutorture.c	rcu: Make rcutorture emit online failures if verbose	2013-08-20 11:38:45 -07:00
rcutree.c	Merge branches 'doc.2013.08.19a', 'fixes.2013.08.20a', 'sysidle.2013.08.31a' and 'torture.2013.08.20a' into HEAD	2013-08-31 14:44:45 -07:00
rcutree.h	nohz_full: Force RCU's grace-period kthreads onto timekeeping CPU	2013-08-31 14:44:02 -07:00
rcutree_plugin.h	nohz_full: Force RCU's grace-period kthreads onto timekeeping CPU	2013-08-31 14:44:02 -07:00
rcutree_trace.c	rcutrace: single_open() leaks	2013-05-05 00:16:35 -04:00
reboot.c	kernel/reboot.c: re-enable the function of variable reboot_default	2013-09-24 17:00:26 -07:00
relay.c	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00
res_counter.c	memcg: reduce function dereference	2013-09-12 15:38:02 -07:00
resource.c	kernel/resource.c: remove the unneeded assignment in function __find_resource	2013-07-03 16:08:06 -07:00
rtmutex-debug.c	sched/rt: Move rt specific bits into new header file	2013-02-07 20:51:08 +01:00
rtmutex-debug.h
rtmutex-tester.c	locking/rtmutex/tester: Set correct permissions on sysfs files	2013-04-10 14:48:37 +02:00
rtmutex.c	rtmutex: Document rt_mutex_adjust_prio_chain()	2013-05-28 09:23:52 +02:00
rtmutex.h
rtmutex_common.h
rwsem.c	Revert "rw_semaphore: remove up/down_read_non_owner"	2013-03-23 15:53:52 -07:00
seccomp.c	seccomp: allow BPF_XOR based ALU instructions.	2013-03-26 11:07:19 +11:00
semaphore.c	semaphore: use `bool' type for semaphore_waiter's up	2013-04-30 17:04:08 -07:00
signal.c	kernel-wide: fix missing validations on __get/__put/__copy_to/__copy_from_user()	2013-09-11 15:58:18 -07:00
smp.c	kernel/smp.c: quit unconditionally enabling irqs in on_each_cpu_mask().	2013-09-11 15:58:25 -07:00
smpboot.c	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00
smpboot.h
softirq.c	irq: Force hardirq exit's softirq processing on its own stack	2013-10-01 12:39:08 +02:00
spinlock.c	kernel/spinlock.c: add default arch_*_relax definitions for GENERIC_LOCKBREAK	2013-09-11 15:58:21 -07:00
srcu.c	srcu: use ACCESS_ONCE() to access sp->completed in srcu_read_lock()	2013-02-07 15:19:36 -08:00
stacktrace.c
stop_machine.c	stop_machine: Mark per cpu stopper enabled early	2013-02-26 22:25:17 +01:00
sys.c	userns: Kill nsown_capable it makes the wrong thing easy	2013-08-30 23:44:11 -07:00
sys_ni.c	unify compat fanotify_mark(2), switch to COMPAT_SYSCALL_DEFINE	2013-05-09 13:46:38 -04:00
sysctl.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-09-12 15:01:38 -07:00
sysctl_binary.c	kernel: remove unnecessary head file	2013-06-26 18:01:46 +09:00
task_work.c	task_work: documentation	2013-09-11 15:58:27 -07:00
taskstats.c
test_kprobes.c	kernel/: rename random32() to prandom_u32()	2013-04-29 18:28:42 -07:00
time.c	sched: Rename sched.c as sched/core.c in comments and Documentation	2013-06-19 12:58:42 +02:00
timeconst.bc	kernel: Replace timeconst.pl with a bc script	2013-02-16 23:17:25 +01:00
timer.c	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00
tracepoint.c	Tracing updates for Linux 3.10	2013-04-29 13:55:38 -07:00
tsacct.c
uid16.c	userns: Kill nsown_capable it makes the wrong thing easy	2013-08-30 23:44:11 -07:00
up.c	smp.h: move !SMP version of on_each_cpu() out-of-line	2013-09-11 15:58:25 -07:00
user-return-notifier.c	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
user.c	userns: Better restrictions on when proc and sysfs can be mounted	2013-08-26 19:17:03 -07:00
user_namespace.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2013-09-07 14:35:32 -07:00
utsname.c	userns: Kill nsown_capable it makes the wrong thing easy	2013-08-30 23:44:11 -07:00
utsname_sysctl.c	kernel/utsname_sysctl.c: put get/get_uts() into CONFIG_PROC_SYSCTL code block	2013-02-27 19:10:22 -08:00
wait.c	kernel: fix new kernel-doc warning in wait.c	2013-08-19 09:08:54 -07:00
watchdog.c	watchdog: update watchdog_thresh properly	2013-09-24 17:00:25 -07:00
workqueue.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2013-09-06 09:36:28 -07:00
workqueue_internal.h	sched: Rename sched.c as sched/core.c in comments and Documentation	2013-06-19 12:58:42 +02:00