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Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull timer fix from Thomas Gleixner:
 "A single fix for a regression introduced in 4.8 which causes the
  trace/perf clock to return random nonsense if CONFIG_DEBUG_TIMEKEEPING
  is set"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  timekeeping: Fix __ktime_get_fast_ns() regression
This commit is contained in:
Linus Torvalds 2016-10-10 10:23:18 -07:00
commit 604a830d4f
1 changed files with 5 additions and 2 deletions
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7
kernel/time/timekeeping.c
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@ -403,8 +403,11 @@ static __always_inline u64 __ktime_get_fast_ns(struct tk_fast *tkf)
tkr = tkf->base + (seq & 0x01);
now = ktime_to_ns(tkr->base);
now += clocksource_delta(tkr->read(tkr->clock),
tkr->cycle_last, tkr->mask);
now += timekeeping_delta_to_ns(tkr,
clocksource_delta(
tkr->read(tkr->clock),
tkr->cycle_last,
tkr->mask));
} while (read_seqcount_retry(&tkf->seq, seq));
return now;