[cadcdev-svn-commits] [SCM] branch master updated. 4dd3433c258cb1e7bf3de599c50c49ad5181e851

[falcovorbis <fal...@us...>]

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- Log -----------------------------------------------------------------
commit 4dd3433c258cb1e7bf3de599c50c49ad5181e851
Author: Paul Cercueil <pa...@cr...>
Date:   Wed Oct 9 04:12:12 2024 +0200

    thread: Improve priority boosting (#801)
    
    When failing to obtain an already locked mutex owned by a thread with
    the same priority than us, we want the other thread to be bumped to the
    front of the queue, not to the end of the queue.
    
    Signed-off-by: Paul Cercueil <pa...@cr...>

-----------------------------------------------------------------------

Summary of changes:
 kernel/thread/mutex.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/thread/mutex.c b/kernel/thread/mutex.c
index afcd680c..3d438965 100644
--- a/kernel/thread/mutex.c
+++ b/kernel/thread/mutex.c
@@ -139,7 +139,7 @@ int mutex_lock_timed(mutex_t *m, int timeout) {
                 /* Thread list is sorted by priority, update the position
                  * of the thread holding the lock */
                 thd_remove_from_runnable(m->holder);
-                thd_add_to_runnable(m->holder, 0);
+                thd_add_to_runnable(m->holder, true);
             }
 
             rv = genwait_wait(m, timeout ? "mutex_lock_timed" : "mutex_lock",


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