Commit-ID: 29fc33fb7283970701355dc89badba4ed21c7092
Gitweb: https://git.kernel.org/tip/29fc33fb7283970701355dc89badba4ed21c7092
Author: Bart Van Assche <bvanass...@acm.org>
AuthorDate: Thu, 14 Feb 2019 15:00:45 -0800
Committer: Ingo Molnar <mi...@kernel.org>
CommitDate: Thu, 28 Feb 2019 07:55:43 +0100
locking/lockdep: Update two outdated comments
synchronize_sched() has been removed recently. Update the comments that
refer to synchronize_sched().
Signed-off-by: Bart Van Assche <bvanass...@acm.org>
Signed-off-by: Peter Zijlstra (Intel) <pet...@infradead.org>
Cc: Andrew Morton <a...@linux-foundation.org>
Cc: Johannes Berg <johan...@sipsolutions.net>
Cc: Linus Torvalds <torva...@linux-foundation.org>
Cc: Paul E. McKenney <paul...@linux.vnet.ibm.com>
Cc: Peter Zijlstra <pet...@infradead.org>
Cc: Thomas Gleixner <t...@linutronix.de>
Cc: Waiman Long <long...@redhat.com>
Cc: Will Deacon <will.dea...@arm.com>
Cc: johannes.b...@intel.com
Cc: t...@kernel.org
Fixes: 51959d85f32d ("lockdep: Replace synchronize_sched() with
synchronize_rcu()") # v5.0-rc1
Link: https://lkml.kernel.org/r/20190214230058.196511-11-bvanass...@acm.org
Signed-off-by: Ingo Molnar <mi...@kernel.org>
---
kernel/locking/lockdep.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index 34cd87c65f5d..c7ca3a4def7e 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -4188,9 +4188,9 @@ static void __lockdep_free_key_range(void *start,
unsigned long size)
* Used in module.c to remove lock classes from memory that is going to be
* freed; and possibly re-used by other modules.
*
- * We will have had one sync_sched() before getting here, so we're guaranteed
- * nobody will look up these exact classes -- they're properly dead but still
- * allocated.
+ * We will have had one synchronize_rcu() before getting here, so we're
+ * guaranteed nobody will look up these exact classes -- they're properly dead
+ * but still allocated.
*/
void lockdep_free_key_range(void *start, unsigned long size)
{
@@ -4209,8 +4209,6 @@ void lockdep_free_key_range(void *start, unsigned long
size)
/*
* Wait for any possible iterators from look_up_lock_class() to pass
* before continuing to free the memory they refer to.
- *
- * sync_sched() is sufficient because the read-side is IRQ disable.
*/
synchronize_rcu();
