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| author | Karsten Wiese <fzu@wemgehoertderstaat.de> | 2008-03-04 23:59:55 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2008-03-09 08:42:57 +0100 |
| commit | a79017660ea4597ec489fab3b5aaf71dd776dfc7 (patch) | |
| tree | 87fedadc8d003391c9ccf5d3cf0aba69fb8e443d /kernel/time/tick-sched.c | |
| parent | time: prevent the loop in timespec_add_ns() from being optimised away (diff) | |
| download | linux-a79017660ea4597ec489fab3b5aaf71dd776dfc7.tar.xz linux-a79017660ea4597ec489fab3b5aaf71dd776dfc7.zip | |
time: don't touch an offlined CPU's ts->tick_stopped in tick_cancel_sched_timer()
Silences WARN_ONs in rcu_enter_nohz() and rcu_exit_nohz(), which appeared
before caused by (repeated) calls to:
$ echo 0 > /sys/devices/system/cpu/cpu1/online
$ echo 1 > /sys/devices/system/cpu/cpu1/online
Signed-off-by: Karsten Wiese <fzu@wemgehoertderstaat.de>
Cc: johnstul@us.ibm.com
Cc: Rafael Wysocki <rjw@sisk.pl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@elte.hu>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to '')
| -rw-r--r-- | kernel/time/tick-sched.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index 2968298f8f36..686da821d376 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c @@ -640,7 +640,7 @@ void tick_cancel_sched_timer(int cpu) if (ts->sched_timer.base) hrtimer_cancel(&ts->sched_timer); - ts->tick_stopped = 0; + ts->nohz_mode = NOHZ_MODE_INACTIVE; } #endif /* HIGH_RES_TIMERS */ |