From 4c81cb7e64436a729cf20cdddaf18a9b4a638430 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 29 Mar 2021 20:13:37 +0200 Subject: [PATCH] tick/nohz: Improve tick_nohz_get_next_hrtimer() kerneldoc Make the tick_nohz_get_next_hrtimer() kerneldoc comment state clearly that the function may return negative numbers. Signed-off-by: Rafael J. Wysocki --- kernel/time/tick-sched.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index e10a4af88737..ee0032b95a7c 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c @@ -1124,7 +1124,11 @@ ktime_t tick_nohz_get_next_hrtimer(void) * tick_nohz_get_sleep_length - return the expected length of the current sleep * @delta_next: duration until the next event if the tick cannot be stopped * - * Called from power state control code with interrupts disabled + * Called from power state control code with interrupts disabled. + * + * The return value of this function and/or the value returned by it through the + * @delta_next pointer can be negative which must be taken into account by its + * callers. */ ktime_t tick_nohz_get_sleep_length(ktime_t *delta_next) {