mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-24 01:41:39 +00:00
revert "clocksource: make clocksource watchdog cycle through online CPUs"
Revert commit 1ada5cba6a
("clocksource:
make clocksource watchdog cycle through online CPUs") due to the
regression reported by Gabriel C at
http://lkml.org/lkml/2008/2/24/281
(short vesion: it makes TSC be marked as always unstable on his
machine).
Cc: Andi Kleen <ak@suse.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Robert Hancock <hancockr@shaw.ca>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Gabriel C <nix.or.die@googlemail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
parent
cf821e8f53
commit
3150e63df4
1 changed files with 4 additions and 10 deletions
|
@ -141,13 +141,8 @@ static void clocksource_watchdog(unsigned long data)
|
|||
}
|
||||
|
||||
if (!list_empty(&watchdog_list)) {
|
||||
/* Cycle through CPUs to check if the CPUs stay synchronized to
|
||||
* each other. */
|
||||
int next_cpu = next_cpu(raw_smp_processor_id(), cpu_online_map);
|
||||
if (next_cpu >= NR_CPUS)
|
||||
next_cpu = first_cpu(cpu_online_map);
|
||||
watchdog_timer.expires += WATCHDOG_INTERVAL;
|
||||
add_timer_on(&watchdog_timer, next_cpu);
|
||||
__mod_timer(&watchdog_timer,
|
||||
watchdog_timer.expires + WATCHDOG_INTERVAL);
|
||||
}
|
||||
spin_unlock(&watchdog_lock);
|
||||
}
|
||||
|
@ -169,7 +164,7 @@ static void clocksource_check_watchdog(struct clocksource *cs)
|
|||
if (!started && watchdog) {
|
||||
watchdog_last = watchdog->read();
|
||||
watchdog_timer.expires = jiffies + WATCHDOG_INTERVAL;
|
||||
add_timer_on(&watchdog_timer, first_cpu(cpu_online_map));
|
||||
add_timer(&watchdog_timer);
|
||||
}
|
||||
} else {
|
||||
if (cs->flags & CLOCK_SOURCE_IS_CONTINUOUS)
|
||||
|
@ -190,8 +185,7 @@ static void clocksource_check_watchdog(struct clocksource *cs)
|
|||
watchdog_last = watchdog->read();
|
||||
watchdog_timer.expires =
|
||||
jiffies + WATCHDOG_INTERVAL;
|
||||
add_timer_on(&watchdog_timer,
|
||||
first_cpu(cpu_online_map));
|
||||
add_timer(&watchdog_timer);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
Loading…
Reference in a new issue