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| author | Thomas Hellstrom <thellstrom@vmware.com> | 2018-09-03 16:07:08 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-09-10 10:05:10 +0200 |
| commit | e13e2366d8415e029fe96a62502955083e272cef (patch) | |
| tree | 4c82dd4d2969bc7b851b6e125c9e2890b03dbe7d /kernel | |
| parent | 11da3a7f84f19c26da6f86af878298694ede0804 (diff) | |
| download | lwn-e13e2366d8415e029fe96a62502955083e272cef.tar.gz lwn-e13e2366d8415e029fe96a62502955083e272cef.zip | |
locking/mutex: Fix mutex debug call and ww_mutex documentation
The following commit:
08295b3b5bee ("Implement an algorithm choice for Wound-Wait mutexes")
introduced a reference in the documentation to a function that was
removed in an earlier commit.
It also forgot to remove a call to debug_mutex_add_waiter() which is now
unconditionally called by __mutex_add_waiter().
Fix those bugs.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: dri-devel@lists.freedesktop.org
Fixes: 08295b3b5bee ("Implement an algorithm choice for Wound-Wait mutexes")
Link: http://lkml.kernel.org/r/20180903140708.2401-1-thellstrom@vmware.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/locking/mutex.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/kernel/locking/mutex.c b/kernel/locking/mutex.c index 1a81a1257b3f..3f8a35104285 100644 --- a/kernel/locking/mutex.c +++ b/kernel/locking/mutex.c @@ -389,7 +389,7 @@ static bool __ww_mutex_wound(struct mutex *lock, /* * wake_up_process() paired with set_current_state() * inserts sufficient barriers to make sure @owner either sees - * it's wounded in __ww_mutex_lock_check_stamp() or has a + * it's wounded in __ww_mutex_check_kill() or has a * wakeup pending to re-read the wounded state. */ if (owner != current) @@ -946,7 +946,6 @@ __mutex_lock_common(struct mutex *lock, long state, unsigned int subclass, } debug_mutex_lock_common(lock, &waiter); - debug_mutex_add_waiter(lock, &waiter, current); lock_contended(&lock->dep_map, ip); |