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| author | Kurt Kanzenbach <kurt@linutronix.de> | 2022-04-28 08:24:32 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2022-04-29 00:07:53 +0200 |
| commit | 2c33d775ef4c25c0e1e1cc0fd5496d02f76bfa20 (patch) | |
| tree | 0f7cf5c4b813f09b3c0ce5ec96301f828c0709e6 /kernel/time | |
| parent | 214cab6f8020a9ad4a5e9862a4e68088d5a79f08 (diff) | |
| download | linux-2c33d775ef4c25c0e1e1cc0fd5496d02f76bfa20.tar.gz linux-2c33d775ef4c25c0e1e1cc0fd5496d02f76bfa20.tar.bz2 linux-2c33d775ef4c25c0e1e1cc0fd5496d02f76bfa20.zip | |
timekeeping: Mark NMI safe time accessors as notrace
Mark the CLOCK_MONOTONIC fast time accessors as notrace. These functions are
used in tracing to retrieve timestamps, so they should not recurse.
Fixes: 4498e7467e9e ("time: Parametrize all tk_fast_mono users")
Fixes: f09cb9a1808e ("time: Introduce tk_fast_raw")
Reported-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20220426175338.3807ca4f@gandalf.local.home/
Link: https://lore.kernel.org/r/20220428062432.61063-1-kurt@linutronix.de
Diffstat (limited to 'kernel/time')
| -rw-r--r-- | kernel/time/timekeeping.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index dcdcb85121e4..3b1398fbddaf 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -482,7 +482,7 @@ static __always_inline u64 __ktime_get_fast_ns(struct tk_fast *tkf) * of the following timestamps. Callers need to be aware of that and * deal with it. */ -u64 ktime_get_mono_fast_ns(void) +u64 notrace ktime_get_mono_fast_ns(void) { return __ktime_get_fast_ns(&tk_fast_mono); } @@ -494,7 +494,7 @@ EXPORT_SYMBOL_GPL(ktime_get_mono_fast_ns); * Contrary to ktime_get_mono_fast_ns() this is always correct because the * conversion factor is not affected by NTP/PTP correction. */ -u64 ktime_get_raw_fast_ns(void) +u64 notrace ktime_get_raw_fast_ns(void) { return __ktime_get_fast_ns(&tk_fast_raw); } |