diff options
| author | Linux Build Service Account <lnxbuild@localhost> | 2018-04-12 18:21:56 -0700 |
|---|---|---|
| committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2018-04-12 18:21:55 -0700 |
| commit | 9c00a6d3a817ae2ad69de3f43e1ea81766ab403d (patch) | |
| tree | b4711162ace5b39562dc296e3377d03da7e1bfbe | |
| parent | 0bf17f61782fda1e39602d86122c28e1e87a1b7e (diff) | |
| parent | 5d3984c09f1dbc8021b35765c1fb307f6044642b (diff) | |
Merge "ANDROID: uid_sys_stats: Replace tasklist lock with RCU in uid_cputime_show"
| -rw-r--r-- | drivers/misc/uid_sys_stats.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/misc/uid_sys_stats.c b/drivers/misc/uid_sys_stats.c index 0e6ab4e7c686..9af9be81224e 100644 --- a/drivers/misc/uid_sys_stats.c +++ b/drivers/misc/uid_sys_stats.c @@ -344,13 +344,13 @@ static int uid_cputime_show(struct seq_file *m, void *v) uid_entry->active_utime = 0; } - read_lock(&tasklist_lock); + rcu_read_lock(); do_each_thread(temp, task) { uid = from_kuid_munged(user_ns, task_uid(task)); if (!uid_entry || uid_entry->uid != uid) uid_entry = find_or_register_uid(uid); if (!uid_entry) { - read_unlock(&tasklist_lock); + rcu_read_unlock(); rt_mutex_unlock(&uid_lock); pr_err("%s: failed to find the uid_entry for uid %d\n", __func__, uid); @@ -360,7 +360,7 @@ static int uid_cputime_show(struct seq_file *m, void *v) uid_entry->active_utime += utime; uid_entry->active_stime += stime; } while_each_thread(temp, task); - read_unlock(&tasklist_lock); + rcu_read_unlock(); hash_for_each(hash_table, bkt, uid_entry, hash) { cputime_t total_utime = uid_entry->utime + |