The upper bound for usleep_range_idle() was taken from the outdated
documentation. As a recommondation for the upper bound of usleep_range()
depends on HZ configuration it is not possible to hard code it.
Use the define "USLEEP_RANGE_UPPER_BOUND" instead.
Cc: SeongJae Park <sj@xxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: damon@xxxxxxxxxxxxxxx
Cc: linux-mm@xxxxxxxxx
Signed-off-by: Anna-Maria Behnsen <anna-maria@xxxxxxxxxxxxx>
Reviewed-by: SeongJae Park <sj@xxxxxxxxxx>
---
mm/damon/core.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/mm/damon/core.c b/mm/damon/core.c
index 94fe2f1f9b0e..4b971871da75 100644
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -1883,8 +1883,7 @@ static unsigned long damos_wmark_wait_us(struct damos *scheme)
static void kdamond_usleep(unsigned long usecs)
{
- /* See Documentation/timers/timers-howto.rst for the thresholds */
- if (usecs > 20 * USEC_PER_MSEC)
+ if (usecs >= USLEEP_RANGE_UPPER_BOUND)
schedule_timeout_idle(usecs_to_jiffies(usecs));
else
usleep_range_idle(usecs, usecs + 1);
--
2.39.2
