The following commit has been merged into the timers/core branch of tip: Commit-ID: eff4849f928f2b90402907e06a6de1619cf16b1a Gitweb: https://git.kernel.org/tip/eff4849f928f2b90402907e06a6de1619cf16b1a Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx> AuthorDate: Fri, 15 Apr 2022 11:19:35 +02:00 Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx> CommitterDate: Mon, 02 May 2022 14:00:20 +02:00 timekeeping: Annotate ktime_get_boot_fast_ns() with data_race() Accessing timekeeper::offset_boot in ktime_get_boot_fast_ns() is an intended data race as the reader side cannot synchronize with a writer and there is no space in struct tk_read_base of the NMI safe timekeeper. Mark it so. Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20220415091920.956045162@xxxxxxxxxxxxx --- kernel/time/timekeeping.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index 2c22023..3479804 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -528,7 +528,7 @@ u64 notrace ktime_get_boot_fast_ns(void) { struct timekeeper *tk = &tk_core.timekeeper; - return (ktime_get_mono_fast_ns() + ktime_to_ns(tk->offs_boot)); + return (ktime_get_mono_fast_ns() + ktime_to_ns(data_race(tk->offs_boot))); } EXPORT_SYMBOL_GPL(ktime_get_boot_fast_ns);
![]() |