diff options
| author | Ingo Molnar <mingo@kernel.org> | 2025-09-16 08:24:22 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2025-09-16 08:24:22 +0200 |
| commit | 85df1cd15ff5d775e88e23b9fc2a9f429fa5b504 (patch) | |
| tree | a9988524f4a9dd1e0a5403ba8a99939b9c71af30 /mm/damon/sysfs.c | |
| parent | 8d73829b78ca1a0e6eb93380f3bf5193d58c281c (diff) | |
| parent | 7f830e126dc357fc086905ce9730140fd4528d66 (diff) | |
Merge branch 'x86/urgent' into x86/apic, to resolve conflict
Conflicts:
arch/x86/include/asm/sev.h
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'mm/damon/sysfs.c')
| -rw-r--r-- | mm/damon/sysfs.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c index 6d2b0dab50cb..7b9254cadd5f 100644 --- a/mm/damon/sysfs.c +++ b/mm/damon/sysfs.c @@ -1260,14 +1260,18 @@ static ssize_t state_show(struct kobject *kobj, struct kobj_attribute *attr, { struct damon_sysfs_kdamond *kdamond = container_of(kobj, struct damon_sysfs_kdamond, kobj); - struct damon_ctx *ctx = kdamond->damon_ctx; - bool running; + struct damon_ctx *ctx; + bool running = false; - if (!ctx) - running = false; - else + if (!mutex_trylock(&damon_sysfs_lock)) + return -EBUSY; + + ctx = kdamond->damon_ctx; + if (ctx) running = damon_is_running(ctx); + mutex_unlock(&damon_sysfs_lock); + return sysfs_emit(buf, "%s\n", running ? damon_sysfs_cmd_strs[DAMON_SYSFS_CMD_ON] : damon_sysfs_cmd_strs[DAMON_SYSFS_CMD_OFF]); |