DAMON is using hrtimer if requested sleep time is <=100ms, while the suggested threshold[1] is <=20ms. This commit applies the threshold.
[1] Documentation/timers/timers-howto.rst
Fixes: ee801b7dd7822 ("mm/damon/schemes: activate schemes based on a watermarks mechanism") Signed-off-by: SeongJae Park sj@kernel.org --- mm/damon/core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/mm/damon/core.c b/mm/damon/core.c index 8cd8fddc931e..ccc62479549a 100644 --- a/mm/damon/core.c +++ b/mm/damon/core.c @@ -978,7 +978,8 @@ static unsigned long damos_wmark_wait_us(struct damos *scheme)
static void kdamond_usleep(unsigned long usecs) { - if (usecs > 100 * 1000) + /* See Documentation/timers/timers-howto.rst for the thresholds */ + if (usecs > 20 * USEC_PER_MSEC) schedule_timeout_idle(usecs_to_jiffies(usecs)); else usleep_idle_range(usecs, usecs + 1);