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author | Ingo Molnar <mingo@elte.hu> | 2008-06-10 16:18:24 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-06-10 16:18:24 +0200 |
commit | fa23641d2a830101de224cb0ecb5ef3ce08024c8 (patch) | |
tree | 80b28d2b1ba7af95f65e328be28a1742850749fa /kernel | |
parent | aab2545fdd6641b76af0ae96456c4ca9d1e50dad (diff) | |
parent | 11120b8850a5dd7b115540ea12a94b4020920850 (diff) |
Merge branch 'timers/clockevents' into auto-timers-next
Diffstat (limited to 'kernel')
-rw-r--r-- | kernel/time/tick-sched.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index b854a895591e..cb75394ed00e 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c @@ -48,6 +48,13 @@ static void tick_do_update_jiffies64(ktime_t now) unsigned long ticks = 0; ktime_t delta; + /* + * Do a quick check without holding xtime_lock: + */ + delta = ktime_sub(now, last_jiffies_update); + if (delta.tv64 < tick_period.tv64) + return; + /* Reevalute with xtime_lock held */ write_seqlock(&xtime_lock); |