From b007c389d3e09b823eccda1503390fa2a9adca0d Mon Sep 17 00:00:00 2001
From: John Stultz <john.stultz@linaro.org>
Date: Fri, 10 Dec 2010 22:19:53 -0800
Subject: [PATCH] hrtimer: fix timerqueue conversion flub
In converting the hrtimers to timerqueue, I missed
a spot in hrtimer_run_queues where we loop running
timers. We end up not pulling the new next value out
and instead just use the last next value, causing
boot time hangs in some cases.
The proper fix is to pull timerqueue_getnext each iteration
instead of using a local next value.
Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: John Stultz <john.stultz@linaro.org>
---
kernel/hrtimer.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index 93976ad42f5a..7a7a2061c24d 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -1412,11 +1412,8 @@ void hrtimer_run_queues(void)
return;
for (index = 0; index < HRTIMER_MAX_CLOCK_BASES; index++) {
- struct timerqueue_node *next;
-
base = &cpu_base->clock_base[index];
- next = timerqueue_getnext(&base->active);
- if (!next)
+ if (!timerqueue_getnext(&base->active))
continue;
if (gettime) {
@@ -1426,7 +1423,7 @@ void hrtimer_run_queues(void)
raw_spin_lock(&cpu_base->lock);
- while ((node = next)) {
+ while ((node = timerqueue_getnext(&base->active))) {
struct hrtimer *timer;
timer = container_of(node, struct hrtimer, node);