From: Ruchi Kandoi <kandoiruchi@google.com>
Date: Fri, 31 Jul 2015 17:17:54 +0000 (-0700)
Subject: uid_cputime: Iterates over all the threads instead of processes.
X-Git-Tag: firefly_0821_release~3678^2~17
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=ba53469fa91f604a523fb027d1bf868e483a5d8b;p=firefly-linux-kernel-4.4.55.git

uid_cputime: Iterates over all the threads instead of processes.

Bug: 22833116
Change-Id: I775a18f61bd2f4df2bec23d01bd49421d0969f87
Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
(cherry picked from commit eb9cf7d0d416edc93edfe6e784189f02c82701a1)
---

diff --git a/drivers/misc/uid_cputime.c b/drivers/misc/uid_cputime.c
index 75843985c0e8..43298a43ecc3 100644
--- a/drivers/misc/uid_cputime.c
+++ b/drivers/misc/uid_cputime.c
@@ -75,7 +75,7 @@ static struct uid_entry *find_or_register_uid(uid_t uid)
 static int uid_stat_show(struct seq_file *m, void *v)
 {
 	struct uid_entry *uid_entry;
-	struct task_struct *task;
+	struct task_struct *task, *temp;
 	cputime_t utime;
 	cputime_t stime;
 	unsigned long bkt;
@@ -89,7 +89,7 @@ static int uid_stat_show(struct seq_file *m, void *v)
 	}
 
 	read_lock(&tasklist_lock);
-	for_each_process(task) {
+	do_each_thread(temp, task) {
 		uid_entry = find_or_register_uid(from_kuid_munged(
 			current_user_ns(), task_uid(task)));
 		if (!uid_entry) {
@@ -109,7 +109,7 @@ static int uid_stat_show(struct seq_file *m, void *v)
 		uid_entry->active_utime += utime;
 		uid_entry->active_stime += stime;
 		uid_entry->active_power += task->cpu_power;
-	}
+	} while_each_thread(temp, task);
 	read_unlock(&tasklist_lock);
 
 	hash_for_each(hash_table, bkt, uid_entry, hash) {