sched: Estimate energy impact of scheduling decisions

[firefly-linux-kernel-4.4.55.git] / kernel / task_work.c

diff --git a/kernel/task_work.c b/kernel/task_work.c
index 8727032e3a6fbd6038aa4283a58cf1ce782d37f2..53fa971d000d0b7fff1b63be23007057468bf120 100644 (file)
--- a/kernel/task_work.c
+++ b/kernel/task_work.c
@@ -18,6 +18,8 @@ static struct callback_head work_exited; /* all we need is ->next == NULL */
  * This is like the signal handler which runs in kernel mode, but it doesn't
  * try to wake up the @task.
  *
+ * Note: there is no ordering guarantee on works queued here.
+ *
  * RETURNS:
  * 0 if succeeds or -ESRCH.
  */
@@ -108,16 +110,6 @@ void task_work_run(void)
                raw_spin_unlock_wait(&task->pi_lock);
                smp_mb();
 
-               /* Reverse the list to run the works in fifo order */
-               head = NULL;
-               do {
-                       next = work->next;
-                       work->next = head;
-                       head = work;
-                       work = next;
-               } while (work);
-
-               work = head;
                do {
                        next = work->next;
                        work->func(work);