This change corrects an omission in posix_cpu_timer_schedule, so that it
correctly propagates the overrun calculation to where it will get reported
to the user.
Signed-off-by: Roland McGrath <[email protected]>
---
kernel/posix-cpu-timers.c | 16 ++++++++++------
1 files changed, 10 insertions(+), 6 deletions(-)
4da6a042f1fe3a10265f4cb444c464c16644f814
diff --git a/kernel/posix-cpu-timers.c b/kernel/posix-cpu-timers.c
--- a/kernel/posix-cpu-timers.c
+++ b/kernel/posix-cpu-timers.c
@@ -1223,7 +1223,7 @@ void posix_cpu_timer_schedule(struct k_i
/*
* The task was cleaned up already, no future firings.
*/
- return;
+ goto out;
/*
* Fetch the current sample and update the timer's expiry time.
@@ -1233,7 +1233,7 @@ void posix_cpu_timer_schedule(struct k_i
bump_cpu_timer(timer, now);
if (unlikely(p->exit_state)) {
clear_dead_task(timer, now);
- return;
+ goto out;
}
read_lock(&tasklist_lock); /* arm_timer needs it. */
} else {
@@ -1246,8 +1246,7 @@ void posix_cpu_timer_schedule(struct k_i
put_task_struct(p);
timer->it.cpu.task = p = NULL;
timer->it.cpu.expires.sched = 0;
- read_unlock(&tasklist_lock);
- return;
+ goto out_unlock;
} else if (unlikely(p->exit_state) && thread_group_empty(p)) {
/*
* We've noticed that the thread is dead, but
@@ -1255,8 +1254,7 @@ void posix_cpu_timer_schedule(struct k_i
* drop our task ref.
*/
clear_dead_task(timer, now);
- read_unlock(&tasklist_lock);
- return;
+ goto out_unlock;
}
cpu_clock_sample_group(timer->it_clock, p, &now);
bump_cpu_timer(timer, now);
@@ -1268,7 +1266,13 @@ void posix_cpu_timer_schedule(struct k_i
*/
arm_timer(timer, now);
+out_unlock:
read_unlock(&tasklist_lock);
+
+out:
+ timer->it_overrun_last = timer->it_overrun;
+ timer->it_overrun = -1;
+ ++timer->it_requeue_pending;
}
/*
-
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