All of lore.kernel.org
 help / color / mirror / Atom feed
* [obsolete] sched-wait-assert-the-wait_queue_head-lock-is-held-in-__wake_up_common.patch removed from -mm tree
@ 2017-12-14  1:02 akpm
  0 siblings, 0 replies; only message in thread
From: akpm @ 2017-12-14  1:02 UTC (permalink / raw)
  To: hch, mingo, peterz, viro, mm-commits


The patch titled
     Subject: sched/wait: assert the wait_queue_head lock is held in __wake_up_common
has been removed from the -mm tree.  Its filename was
     sched-wait-assert-the-wait_queue_head-lock-is-held-in-__wake_up_common.patch

This patch was dropped because it is obsolete

------------------------------------------------------
From: Christoph Hellwig <hch@lst.de>
Subject: sched/wait: assert the wait_queue_head lock is held in __wake_up_common

Better ensure we actually hold the lock using lockdep than just commenting
on it.  Due to the various exported _locked interfaces it is far too easy
to get the locking wrong.

Link: http://lkml.kernel.org/r/20171130142037.19339-2-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 kernel/sched/wait.c |    2 ++
 1 file changed, 2 insertions(+)

diff -puN kernel/sched/wait.c~sched-wait-assert-the-wait_queue_head-lock-is-held-in-__wake_up_common kernel/sched/wait.c
--- a/kernel/sched/wait.c~sched-wait-assert-the-wait_queue_head-lock-is-held-in-__wake_up_common
+++ a/kernel/sched/wait.c
@@ -76,6 +76,8 @@ static int __wake_up_common(struct wait_
 	wait_queue_entry_t *curr, *next;
 	int cnt = 0;
 
+	lockdep_assert_held(&wq_head->lock);
+
 	if (bookmark && (bookmark->flags & WQ_FLAG_BOOKMARK)) {
 		curr = list_next_entry(bookmark, entry);
 
_

Patches currently in -mm which might be from hch@lst.de are



^ permalink raw reply	[flat|nested] only message in thread

only message in thread, other threads:[~2017-12-14  1:02 UTC | newest]

Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-12-14  1:02 [obsolete] sched-wait-assert-the-wait_queue_head-lock-is-held-in-__wake_up_common.patch removed from -mm tree akpm

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.