Thomas Gleixner c4b4c3c5f8 nohz: Fix another inconsistency between CONFIG_NO_HZ=n and nohz=off ...

commit 0e576acbc1 upstream.

If CONFIG_NO_HZ=n tick_nohz_get_sleep_length() returns NSEC_PER_SEC/HZ.

If CONFIG_NO_HZ=y and the nohz functionality is disabled via the
command line option "nohz=off" or not enabled due to missing hardware
support, then tick_nohz_get_sleep_length() returns 0. That happens
because ts->sleep_length is never set in that case.

Set it to NSEC_PER_SEC/HZ when the NOHZ mode is inactive.

Reported-by: Michal Hocko <mhocko@suse.cz>
Reported-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

2014-08-06 18:07:39 +01:00

..

alarmtimer.c

alarmtimer: Fix bug where relative alarm timers were treated as absolute

2014-08-06 18:07:37 +01:00

clockevents.c

…

clocksource.c

…

jiffies.c

time: Fix overflow when HZ is smaller than 60

2014-04-02 00:58:49 +01:00

Kconfig

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Makefile

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ntp.c

ntp: Correct TAI offset during leap second

2012-07-25 04:11:33 +01:00

posix-clock.c

…

tick-broadcast.c

clockevents: Set dummy handler on CPU_DEAD shutdown

2013-05-13 15:02:26 +01:00

tick-common.c

clockevents: Set dummy handler on CPU_DEAD shutdown

2013-05-13 15:02:26 +01:00

tick-internal.h

…

tick-oneshot.c

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tick-sched.c

nohz: Fix another inconsistency between CONFIG_NO_HZ=n and nohz=off

2014-08-06 18:07:39 +01:00

timecompare.c

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timeconv.c

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timekeeping.c

timekeeping: fix 32-bit overflow in get_monotonic_boottime

2014-04-02 00:59:00 +01:00

timer_list.c

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timer_stats.c

…