Author: mav
Date: Fri Feb 2 18:10:45 2018
New Revision: 328802
URL: https://svnweb.freebsd.org/changeset/base/328802
Log:
Partial MFC of r311039 (by sbruno):
- add INVARIANTS debugging hooks to gtaskqueue enqueue (mmacy)
Modified:
stable/11/sys/kern/subr_gtaskqueue.c
Modified: stable/11/sys/kern/subr_gtaskqueue.c
==============================================================================
--- stable/11/sys/kern/subr_gtaskqueue.c Fri Feb 2 18:04:57 2018
(r328801)
+++ stable/11/sys/kern/subr_gtaskqueue.c Fri Feb 2 18:10:45 2018
(r328802)
@@ -101,6 +101,15 @@ struct gtaskqueue {
} while (0)
#define TQ_ASSERT_UNLOCKED(tq) mtx_assert(&(tq)->tq_mutex, MA_NOTOWNED)
+#ifdef INVARIANTS
+static void
+gtask_dump(struct gtask *gtask)
+{
+ printf("gtask: %p ta_flags=%x ta_priority=%d ta_func=%p
ta_context=%p\n",
+ gtask, gtask->ta_flags, gtask->ta_priority, gtask->ta_func,
gtask->ta_context);
+}
+#endif
+
static __inline int
TQ_SLEEP(struct gtaskqueue *tq, void *p, struct mtx *m, int pri, const char
*wm,
int t)
@@ -174,6 +183,12 @@ gtaskqueue_free(struct gtaskqueue *queue)
int
grouptaskqueue_enqueue(struct gtaskqueue *queue, struct gtask *gtask)
{
+#ifdef INVARIANTS
+ if (queue == NULL) {
+ gtask_dump(gtask);
+ panic("queue == NULL");
+ }
+#endif
TQ_LOCK(queue);
if (gtask->ta_flags & TASK_ENQUEUED) {
TQ_UNLOCK(queue);
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