diff options
| author | Xin Hao <xhao@linux.alibaba.com> | 2022-09-15 22:22:36 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-10-03 14:03:26 -0700 |
| commit | 871f697b494b04f8d78cc090e49b416062d23a10 (patch) | |
| tree | 51e7a0531609eadf3b74c5d899bf6394900e6072 /mm/damon | |
| parent | ce732a7520b093091c345cba1b84542d1abd83ed (diff) | |
| download | linux-871f697b494b04f8d78cc090e49b416062d23a10.tar.bz2 | |
mm/damon/sysfs: avoid call damon_target_has_pid() repeatedly
In damon_sysfs_destroy_targets(), we call damon_target_has_pid() to check
whether the 'ctx' include a valid pid, but there no need to call
damon_target_has_pid() to check repeatedly, just need call it once.
[xhao@linux.alibaba.com: more simplified code calls damon_target_has_pid()]
Link: https://lkml.kernel.org/r/20220916133535.7428-1-xhao@linux.alibaba.com
Link: https://lkml.kernel.org/r/20220915142237.92529-1-xhao@linux.alibaba.com
Signed-off-by: Xin Hao <xhao@linux.alibaba.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/damon')
| -rw-r--r-- | mm/damon/sysfs.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c index 1fa0023f136e..0cca1909bf67 100644 --- a/mm/damon/sysfs.c +++ b/mm/damon/sysfs.c @@ -2143,9 +2143,10 @@ static int damon_sysfs_set_attrs(struct damon_ctx *ctx, static void damon_sysfs_destroy_targets(struct damon_ctx *ctx) { struct damon_target *t, *next; + bool has_pid = damon_target_has_pid(ctx); damon_for_each_target_safe(t, next, ctx) { - if (damon_target_has_pid(ctx)) + if (has_pid) put_pid(t->pid); damon_destroy_target(t); } |