From: Anna-Maria Behnsen <anna-maria@linutronix.de>
Date: Mon, 14 Oct 2024 08:22:25 +0000 (+0200)
Subject: mm/damon/core: Use generic upper bound recommondation for usleep_range()
X-Git-Tag: v6.13-rc1~171^2~97
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ef0245582e5bccd8b4c480a58bd4da91ee276397;p=thirdparty%2Fkernel%2Flinux.git

mm/damon/core: Use generic upper bound recommondation for usleep_range()

The upper bound for usleep_range_idle() was taken from the outdated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.

Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: SeongJae Park <sj@kernel.org>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Link: https://lore.kernel.org/all/20241014-devel-anna-maria-b4-timers-flseep-v3-8-dc8b907cb62f@linutronix.de
---

diff --git a/mm/damon/core.c b/mm/damon/core.c
index c725c78b43f01..79efd8089d6ca 100644
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -1892,8 +1892,7 @@ 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);