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[wait-queue] fix wake all to remove threads from tail

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While waking up all threads from wait-queue, order should
start from tail to maintain correct scheduling sequence.

Signed-off-by: Mahavir Jain <mahavirpj@gmail.com>
This commit is contained in:
Mahavir Jain
2016-09-06 23:06:16 +05:30
committed by Travis Geiselbrecht
parent 014de968e1
commit 68c6ae154c
1 changed files with 1 additions and 1 deletions
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2
kernel/thread.c
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@@ -1212,7 +1212,7 @@ int wait_queue_wake_all(wait_queue_t *wait, bool reschedule, status_t wait_queue
} }
/* pop all the threads off the wait queue into the run queue */ /* pop all the threads off the wait queue into the run queue */
while ((t = list_remove_head_type(&wait->list, thread_t, queue_node))) { while ((t = list_remove_tail_type(&wait->list, thread_t, queue_node))) {
wait->count--; wait->count--;
DEBUG_ASSERT(t->state == THREAD_BLOCKED); DEBUG_ASSERT(t->state == THREAD_BLOCKED);
t->state = THREAD_READY; t->state = THREAD_READY;