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: 4498e74 ("time: Parametrize all tk_fast_mono users") Fixes: f09cb9a ("time: Introduce tk_fast_raw") Reported-by: Steven Rostedt <[email protected]> Signed-off-by: Kurt Kanzenbach <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Cc: [email protected] Link: https://lore.kernel.org/r/[email protected]/ Link: https://lore.kernel.org/r/[email protected]
umac211 · Apr 28, 2022 · 2c33d77 · 2c33d77
1 parent 214cab6
commit 2c33d77
Showing 1 changed file with 2 additions and 2 deletions.
diff --git 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);
 }