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| author | Jens Axboe <jaxboe@fusionio.com> | 2010-06-01 12:42:12 +0200 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2010-06-01 12:42:12 +0200 |
| commit | b4ca761577535b2b4d153689ee97342797dfff05 (patch) | |
| tree | 29054d55508f1faa22ec32acf7c245751af03348 /kernel/timer.c | |
| parent | 28f4197e5d4707311febeec8a0eb97cb5fd93c97 (diff) | |
| parent | 67a3e12b05e055c0415c556a315a3d3eb637e29e (diff) | |
Merge branch 'master' into for-linus
Conflicts:
fs/pipe.c
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'kernel/timer.c')
| -rw-r--r-- | kernel/timer.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/kernel/timer.c b/kernel/timer.c index 9199f3c5221..2454172a80d 100644 --- a/kernel/timer.c +++ b/kernel/timer.c @@ -750,13 +750,18 @@ unsigned long apply_slack(struct timer_list *timer, unsigned long expires) unsigned long expires_limit, mask; int bit; - expires_limit = expires + timer->slack; + expires_limit = expires; - if (timer->slack < 0) /* auto slack: use 0.4% */ - expires_limit = expires + (expires - jiffies)/256; + if (timer->slack >= 0) { + expires_limit = expires + timer->slack; + } else { + unsigned long now = jiffies; + /* No slack, if already expired else auto slack 0.4% */ + if (time_after(expires, now)) + expires_limit = expires + (expires - now)/256; + } mask = expires ^ expires_limit; - if (mask == 0) return expires; @@ -1679,11 +1684,14 @@ static int __cpuinit timer_cpu_notify(struct notifier_block *self, unsigned long action, void *hcpu) { long cpu = (long)hcpu; + int err; + switch(action) { case CPU_UP_PREPARE: case CPU_UP_PREPARE_FROZEN: - if (init_timers_cpu(cpu) < 0) - return NOTIFY_BAD; + err = init_timers_cpu(cpu); + if (err < 0) + return notifier_from_errno(err); break; #ifdef CONFIG_HOTPLUG_CPU case CPU_DEAD: |