disable pwm7

hc

2024-05-10 23fa18eaa71266feff7ba8d83022d9e1cc83c65a

 kernel/include/linux/sched/wake_q.h
..
..
@@ -24,9 +24,13 @@
24
24
  * called near the end of a function. Otherwise, the list can be
25
25
  * re-initialized for later re-use by wake_q_init().
26
26
  *
27
- * Note that this can cause spurious wakeups. schedule() callers
27
+ * NOTE that this can cause spurious wakeups. schedule() callers
28
28
  * must ensure the call is done inside a loop, confirming that the
29
29
  * wakeup condition has in fact occurred.
30
+ *
31
+ * NOTE that there is no guarantee the wakeup will happen any later than the
32
+ * wake_q_add() location. Therefore task must be ready to be woken at the
33
+ * location of the wake_q_add().
30
34
  */
31
35
 
32
36
 #include <linux/sched.h>
..
..
@@ -49,8 +53,13 @@
49
53
 	head->count = 0;
50
54
 }
51
55
 
52
-extern void wake_q_add(struct wake_q_head *head,
53
-		       struct task_struct *task);
56
+static inline bool wake_q_empty(struct wake_q_head *head)
57
+{
58
+	return head->first == WAKE_Q_TAIL;
59
+}
60
+
61
+extern void wake_q_add(struct wake_q_head *head, struct task_struct *task);
62
+extern void wake_q_add_safe(struct wake_q_head *head, struct task_struct *task);
54
63
 extern void wake_up_q(struct wake_q_head *head);
55
64
 
56
65
 #endif /* _LINUX_SCHED_WAKE_Q_H */