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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 fixes from Thomas Gleixner:
 "A set of small fixes:

   - Repair the ktime_get_coarse() functions so they actually deliver
     what they are supposed to: tick granular time stamps. The current
     code missed to add the accumulated nanoseconds part of the
     timekeeper so the resulting granularity was 1 second.

   - Prevent the tracer from infinitely recursing into time getter
     functions in the arm architectured timer by marking these functions
     notrace

   - Fix a trivial compiler warning caused by wrong qualifier ordering"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  timekeeping: Repair ktime_get_coarse*() granularity
  clocksource/drivers/arm_arch_timer: Don't trace count reader functions
  clocksource/drivers/timer-ti-dm: Change to new style declaration
This commit is contained in:
Linus Torvalds
2019-06-16 07:22:56 -10:00
parent f763cf8e47 e3ff9c3678
commit efba92d58f
3 changed files with 8 additions and 7 deletions
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5
kernel/time/timekeeping.c
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@@ -808,17 +808,18 @@ ktime_t ktime_get_coarse_with_offset(enum tk_offsets offs)
struct timekeeper *tk = &tk_core.timekeeper;
unsigned int seq;
ktime_t base, *offset = offsets[offs];
u64 nsecs;
WARN_ON(timekeeping_suspended);
do {
seq = read_seqcount_begin(&tk_core.seq);
base = ktime_add(tk->tkr_mono.base, *offset);
nsecs = tk->tkr_mono.xtime_nsec >> tk->tkr_mono.shift;
} while (read_seqcount_retry(&tk_core.seq, seq));
return base;
return base + nsecs;
}
EXPORT_SYMBOL_GPL(ktime_get_coarse_with_offset);