linux/kernel/time
Michal Hocko 09a1d34f85 nohz: Make idle/iowait counter update conditional
get_cpu_{idle,iowait}_time_us update idle/iowait counters
unconditionally if the given CPU is in the idle loop.

This doesn't work well outside of CPU governors which are singletons
so nobody (except for IRQ) can race with them.

We will need to use both functions from /proc/stat handler to properly
handle nohz idle/iowait times.

Make the update depend on a non NULL last_update_time argument.

Signed-off-by: Michal Hocko <mhocko@suse.cz>
Cc: Dave Jones <davej@redhat.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Link: http://lkml.kernel.org/r/11f23179472635ce52e78921d47a20216b872f23.1314172057.git.mhocko@suse.cz
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-09-08 11:10:55 +02:00
..
alarmtimer.c alarmtimers: Rework RTC device selection using class interface 2011-08-10 14:55:30 -07:00
clockevents.c clockevents: Handle empty cpumask gracefully 2011-06-03 11:13:33 +02:00
clocksource.c clocksource: Make watchdog robust vs. interruption 2011-06-16 19:30:53 +02:00
jiffies.c Fix common misspellings 2011-03-31 11:26:23 -03:00
Kconfig time: Kill off CONFIG_GENERIC_TIME 2010-07-27 12:40:54 +02:00
Makefile timers: Introduce in-kernel alarm-timer interface 2011-04-26 14:01:44 -07:00
ntp.c ntp: fix non privileged system time shifting 2011-04-04 08:31:23 -07:00
posix-clock.c posix clocks: Replace mutex with reader/writer semaphore 2011-04-18 10:39:38 +02:00
tick-broadcast.c Merge branch 'timers/urgent' into timers/core 2011-05-20 20:08:05 +02:00
tick-common.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
tick-internal.h 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
tick-oneshot.c time: Make do_timer() and xtime_lock local to kernel/time/ 2011-01-31 19:26:50 +01:00
tick-sched.c nohz: Make idle/iowait counter update conditional 2011-09-08 11:10:55 +02:00
timecompare.c time: Use ARRAY_SIZE macro in timecompare.c 2010-10-21 17:30:06 +02:00
timeconv.c time: add function to convert between calendar time and broken-down time for universal use 2009-09-24 07:20:56 -07:00
timekeeping.c time: Fix stupid KERN_WARN compile issue 2011-07-20 15:42:55 -07:00
timer_list.c timer debug: Hide kernel addresses via %pK in /proc/timer_list 2011-02-12 14:11:56 +01:00
timer_stats.c Fix common misspellings 2011-03-31 11:26:23 -03:00