[kernel] fix get top thread error if NUM_PRIORITIES < 32

2016-09-13 18:51:14 +08:00
parent fc611a8fda
commit 6782ea9af6
1 changed files with 1 additions and 2 deletions
--- a/kernel/thread.c
+++ b/kernel/thread.c
@@ -453,8 +453,7 @@ static thread_t *get_top_thread(int cpu)

    while (local_run_queue_bitmap) {
        /* find the first (remaining) queue with a thread in it */
-        uint next_queue = HIGHEST_PRIORITY - __builtin_clz(local_run_queue_bitmap)
-                          - (sizeof(run_queue_bitmap) * 8 - NUM_PRIORITIES);
+        uint next_queue = sizeof(run_queue_bitmap) * 8 - 1 - __builtin_clz(local_run_queue_bitmap);

        list_for_every_entry(&run_queue[next_queue], newthread, thread_t, queue_node) {
 #if WITH_SMP