android_kernel_xiaomi_sm8350/kernel/time
Eero Nurkkala fdc6f192e7 NOHZ: update idle state also when NOHZ is inactive
Commit f2e21c9610 had unfortunate side
effects with cpufreq governors on some systems.

If the system did not switch into NOHZ mode ts->inidle is not set when
tick_nohz_stop_sched_tick() is called from the idle routine. Therefor
all subsequent calls from irq_exit() to tick_nohz_stop_sched_tick()
fail to call tick_nohz_start_idle(). This results in bogus idle
accounting information which is passed to cpufreq governors.

Set the inidle flag unconditionally of the NOHZ active state to keep
the idle time accounting correct in any case.

[ tglx: Added comment and tweaked the changelog ]

Reported-by: Steven Noonan <steven@uplinklabs.net>
Signed-off-by: Eero Nurkkala <ext-eero.nurkkala@nokia.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: Greg KH <greg@kroah.com>
Cc: Steven Noonan <steven@uplinklabs.net>
Cc: stable@kernel.org
LKML-Reference: <1254907901.30157.93.camel@eenurkka-desktop>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2009-10-07 13:05:05 +02:00
..
clockevents.c clockevent: Prevent dead lock on clockevents_lock 2009-08-19 18:15:10 +02:00
clocksource.c clocksource: Resume clocksource without taking the clocksource mutex 2009-09-24 22:37:53 +02:00
jiffies.c clocksource: Cleanup clocksource selection 2009-08-15 10:55:46 +02:00
Kconfig Kconfig: eliminate "def_bool n" constructs 2008-10-16 11:21:31 -07:00
Makefile time: add function to convert between calendar time and broken-down time for universal use 2009-09-24 07:20:56 -07:00
ntp.c timekeeping: Introduce timekeeping_leap_insert 2009-08-15 10:55:45 +02:00
tick-broadcast.c clockevent: Prevent dead lock on clockevents_lock 2009-08-19 18:15:10 +02:00
tick-common.c clockevents: prevent endless loop in tick_handle_periodic() 2009-05-02 10:22:27 +02:00
tick-internal.h NOHZ: restart tick device from irq_enter() 2008-10-17 18:13:38 +02:00
tick-oneshot.c clocksource: prevent selection of low resolution clocksourse also for nohz=on 2009-06-13 12:00:26 +02:00
tick-sched.c NOHZ: update idle state also when NOHZ is inactive 2009-10-07 13:05:05 +02:00
timecompare.c timecompare: generic infrastructure to map between two time bases 2009-02-15 22:43:32 -08:00
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 timekeeping: Fix invalid getboottime() value 2009-08-25 09:09:02 +02:00
timer_list.c const: constify remaining file_operations 2009-10-01 16:11:11 -07:00
timer_stats.c const: constify remaining file_operations 2009-10-01 16:11:11 -07:00