Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Waiman Long 08be8f63c4 locking/pvstat: Separate wait_again and spurious wakeup stats ... Currently there are overlap in the pvqspinlock wait_again and spurious_wakeup stat counters. Because of lock stealing, it is no longer possible to accurately determine if spurious wakeup has happened in the queue head. As they track both the queue node and queue head status, it is also hard to tell how many of those comes from the queue head and how many from the queue node. This patch changes the accounting rules so that spurious wakeup is only tracked in the queue node. The wait_again count, however, is only tracked in the queue head when the vCPU failed to acquire the lock after a vCPU kick. This should give a much better indication of the wait-kick dynamics in the queue node and the queue head. Signed-off-by: Waiman Long <Waiman.Long@hpe.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Douglas Hatch <doug.hatch@hpe.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Pan Xinhui <xinhui@linux.vnet.ibm.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Scott J Norton <scott.norton@hpe.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1464713631-1066-2-git-send-email-Waiman.Long@hpe.com Signed-off-by: Ingo Molnar <mingo@kernel.org>		2016-08-10 14:16:02 +02:00
..
bpf	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2016-07-27 12:03:20 -07:00
configs	config: add android config fragments	2016-08-02 19:35:42 -04:00
debug
events	perf/core: Change log level for duration warning to KERN_INFO	2016-08-02 10:23:57 +02:00
gcov	gcov: add support for gcc version >= 6	2016-07-15 14:54:27 +09:00
irq	genirq: Fix missing irq allocation affinity hint	2016-07-19 10:49:47 +02:00
livepatch	modules: add ro_after_init support	2016-08-04 10:16:55 +09:30
locking	locking/pvstat: Separate wait_again and spurious wakeup stats	2016-08-10 14:16:02 +02:00
power	mm, vmscan: move LRU lists to node	2016-07-28 16:07:41 -07:00
printk	Revert "printk: create pr_<level> functions"	2016-08-09 10:48:18 -07:00
rcu	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
sched	xen: features and fixes for 4.8-rc0	2016-07-27 11:35:37 -07:00
time	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
trace	block: rename bio bi_rw to bi_opf	2016-08-07 14:41:02 -06:00
.gitignore
acct.c
async.c
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
audit_fsnotify.c
audit_tree.c	audit: cleanup prune_tree_thread	2016-04-04 09:46:47 -04:00
audit_watch.c	don't bother with ->d_inode->i_sb - it's always equal to ->d_sb	2016-04-10 17:11:51 -04:00
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
bounds.c
capability.c	kernel: Add noaudit variant of ns_capable()	2016-06-06 20:16:18 +10:00
cgroup.c	Merge branch 'for-4.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2016-07-29 14:29:04 -07:00
cgroup_freezer.c
cgroup_pids.c	cgroup: Use lld instead of ld when printing pids controller events_limit	2016-06-21 15:03:36 -04:00
compat.c
configs.c
context_tracking.c
cpu.c	timers/core: Correct callback order during CPU hot plug	2016-07-28 18:56:22 +02:00
cpu_pm.c
cpuset.c	cpuset, mm: fix TIF_MEMDIE check in cpuset_change_task_nodemask	2016-07-28 16:07:41 -07:00
crash_dump.c
cred.c	cred: Reject inodes with invalid ids in set_create_file_as()	2016-06-30 18:05:09 -05:00
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c	kernel/exit.c: quieten greatest stack depth printk	2016-08-02 19:35:23 -04:00
extable.c
fork.c	mm: fix memcg stack accounting for sub-page stacks	2016-07-28 16:07:41 -07:00
freezer.c	freezer, oom: check TIF_MEMDIE on the correct task	2016-07-28 16:07:41 -07:00
futex.c	futex: Assume all mappings are private on !MMU systems	2016-07-29 18:44:14 +02:00
futex_compat.c
groups.c
hung_task.c	kernel/hung_task.c: use timeout diff when timeout is updated	2016-03-22 15:36:02 -07:00
irq_work.c
jump_label.c	powerpc updates for 4.8 #2	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
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c	kernel/kcov: unproxify debugfs file's fops	2016-06-15 04:56:35 -07:00
kexec.c	kexec: allow architectures to override boot mapping	2016-08-02 19:35:27 -04:00
kexec_core.c	kexec: add restriction on kexec_load() segment sizes	2016-08-02 19:35:31 -04:00
kexec_file.c	kexec: introduce a protection mechanism for the crashkernel reserved memory	2016-05-23 17:04:14 -07:00
kexec_internal.h
kmod.c
kprobes.c
ksysfs.c	kexec: add a kexec_crash_loaded() function	2016-08-02 19:35:30 -04:00
kthread.c
latencytop.c
Makefile	ELF/MIPS build fix	2016-05-23 17:04:14 -07:00
membarrier.c
memremap.c	libnvdimm for 4.8	2016-07-28 17:38:16 -07:00
module-internal.h
module.c	Removed the MODULE_SIG_FORCE-means-no-MODULE_FORCE_LOAD patch.	2016-08-04 09:14:38 -04:00
module_signing.c	KEYS: Move the point of trust determination to __key_link()	2016-04-11 22:43:43 +01:00
notifier.c
nsproxy.c
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
pid.c	remove lots of IS_ERR_VALUE abuses	2016-05-27 15:26:11 -07:00
pid_namespace.c
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
reboot.c
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	tree-wide: replace config_enabled() with IS_ENABLED()	2016-08-04 08:50:07 -04:00
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
smpboot.h
softirq.c	arch, ftrace: for KASAN put hard/soft IRQ entries into separate sections	2016-03-25 16:37:42 -07:00
stacktrace.c
stop_machine.c	stop_machine: Touch_nmi_watchdog() after MULTI_STOP_PREPARE	2016-07-27 11:12:11 +02:00
sys.c	prctl: make PR_SET_THP_DISABLE wait for mmap_sem killable	2016-05-23 17:04:14 -07:00
sys_ni.c
sysctl.c	printk: add kernel parameter to control writes to /dev/kmsg	2016-08-02 19:35:06 -04:00
sysctl_binary.c	kernel/sysctl_binary.c: use generic UUID library	2016-05-20 17:58:30 -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
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
uid16.c
up.c
user-return-notifier.c
user.c
user_namespace.c	fs: Limit file caps to the user namespace of the super block	2016-06-24 10:40:31 -05:00
utsname.c
utsname_sysctl.c
watchdog.c	Revert "perf/x86/intel, watchdog: Switch NMI watchdog to ref cycles on x86"	2016-07-10 20:58:36 +02:00
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
workqueue_internal.h