perf: Fix event->ctx locking

[cascardo/linux.git] / kernel / workqueue.c

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 6202b08..beeeac9 100644 (file)
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -1841,17 +1841,11 @@ static void pool_mayday_timeout(unsigned long __pool)
  * spin_lock_irq(pool->lock) which may be released and regrabbed
  * multiple times.  Does GFP_KERNEL allocations.  Called only from
  * manager.
- *
- * Return:
- * %false if no action was taken and pool->lock stayed locked, %true
- * otherwise.
  */
-static bool maybe_create_worker(struct worker_pool *pool)
+static void maybe_create_worker(struct worker_pool *pool)
 __releases(&pool->lock)
 __acquires(&pool->lock)
 {
-       if (!need_to_create_worker(pool))
-               return false;
 restart:
        spin_unlock_irq(&pool->lock);
 
@@ -1877,7 +1871,6 @@ restart:
         */
        if (need_to_create_worker(pool))
                goto restart;
-       return true;
 }
 
 /**
@@ -1897,16 +1890,14 @@ restart:
  * multiple times.  Does GFP_KERNEL allocations.
  *
  * Return:
- * %false if the pool don't need management and the caller can safely start
- * processing works, %true indicates that the function released pool->lock
- * and reacquired it to perform some management function and that the
- * conditions that the caller verified while holding the lock before
- * calling the function might no longer be true.
+ * %false if the pool doesn't need management and the caller can safely
+ * start processing works, %true if management function was performed and
+ * the conditions that the caller verified before calling the function may
+ * no longer be true.
  */
 static bool manage_workers(struct worker *worker)
 {
        struct worker_pool *pool = worker->pool;
-       bool ret = false;
 
        /*
         * Anyone who successfully grabs manager_arb wins the arbitration
@@ -1919,12 +1910,12 @@ static bool manage_workers(struct worker *worker)
         * actual management, the pool may stall indefinitely.
         */
        if (!mutex_trylock(&pool->manager_arb))
-               return ret;
+               return false;
 
-       ret |= maybe_create_worker(pool);
+       maybe_create_worker(pool);
 
        mutex_unlock(&pool->manager_arb);
-       return ret;
+       return true;
 }
 
 /**