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authorOleg Nesterov <oleg@tv-sign.ru>2005-10-17 18:49:42 +0400
committerLinus Torvalds <torvalds@g5.osdl.org>2005-10-17 15:00:00 -0700
commit47d6b08334a43fafa61a587f721fa21ef65d81be (patch)
tree57e9082d0011a4ada210878be2b90c2ede14451a
parent6ce969171d5187f7621be68c0ebbc7fb02ec53f1 (diff)
[PATCH] posix-timers: fix task accounting
Make sure we release the task struct properly when releasing pending timers. release_task() does write_lock_irq(&tasklist_lock), so it can't race with run_posix_cpu_timers() on any cpu. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--kernel/posix-cpu-timers.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/posix-cpu-timers.c b/kernel/posix-cpu-timers.c
index ad85d3f0dcc..7a51a5597c3 100644
--- a/kernel/posix-cpu-timers.c
+++ b/kernel/posix-cpu-timers.c
@@ -424,6 +424,7 @@ static void cleanup_timers(struct list_head *head,
cputime_t ptime = cputime_add(utime, stime);
list_for_each_entry_safe(timer, next, head, entry) {
+ put_task_struct(timer->task);
timer->task = NULL;
list_del_init(&timer->entry);
if (cputime_lt(timer->expires.cpu, ptime)) {
@@ -436,6 +437,7 @@ static void cleanup_timers(struct list_head *head,
++head;
list_for_each_entry_safe(timer, next, head, entry) {
+ put_task_struct(timer->task);
timer->task = NULL;
list_del_init(&timer->entry);
if (cputime_lt(timer->expires.cpu, utime)) {
@@ -448,6 +450,7 @@ static void cleanup_timers(struct list_head *head,
++head;
list_for_each_entry_safe(timer, next, head, entry) {
+ put_task_struct(timer->task);
timer->task = NULL;
list_del_init(&timer->entry);
if (timer->expires.sched < sched_time) {