korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-11 21:38:32 +08:00
Code Issues Packages Projects Releases Wiki Activity

mm/damon/reclaim: fix the timer always stays active

Browse Source 
The timer stays active even if the reclaim mechanism is never enabled.  It
is unnecessary overhead can be completely avoided by using
module_param_cb() for enabled flag.

Link: https://lkml.kernel.org/r/20220421125910.1052459-1-tuhailong@gmail.com
Signed-off-by: Hailong Tu <tuhailong@gmail.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Hailong Tu 2022-04-29 14:37:00 -07:00 committed by akpm
parent cef4493f1a
commit 059342d1dd
1 changed files with 25 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
mm/damon/reclaim.c
View File

@ -28,7 +28,6 @@
* this.
*/
static bool enabled __read_mostly;
module_param(enabled, bool, 0600);
/*
* Time threshold for cold memory regions identification in microseconds.
@ -358,11 +357,35 @@ static void damon_reclaim_timer_fn(struct work_struct *work)
enabled = last_enabled;
}
schedule_delayed_work(&damon_reclaim_timer,
if (enabled)
schedule_delayed_work(&damon_reclaim_timer,
msecs_to_jiffies(ENABLE_CHECK_INTERVAL_MS));
}
static DECLARE_DELAYED_WORK(damon_reclaim_timer, damon_reclaim_timer_fn);
static int enabled_store(const char *val,
const struct kernel_param *kp)
{
int rc = param_set_bool(val, kp);
if (rc < 0)
return rc;
if (enabled)
schedule_delayed_work(&damon_reclaim_timer, 0);
return 0;
}
static const struct kernel_param_ops enabled_param_ops = {
.set = enabled_store,
.get = param_get_bool,
};
module_param_cb(enabled, &enabled_param_ops, &enabled, 0600);
MODULE_PARM_DESC(enabled,
"Enable or disable DAMON_RECLAIM (default: disabled)");
static int damon_reclaim_after_aggregation(struct damon_ctx *c)
{
struct damos *s;