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| author | Andreea-Cristina Bernat <bernat.ada@gmail.com> | 2014-08-22 16:26:05 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-09-09 06:53:05 +0200 |
| commit | 70691d4a0bf7c871559d4ef1b0056edefbca123b (patch) | |
| tree | e867513ecdbe5cf49356e98acbf686ba82ae59e7 /kernel/events | |
| parent | e0455e194a5e0cf49bc7596a20d4f7e47995b9c6 (diff) | |
| download | blackbird-op-linux-70691d4a0bf7c871559d4ef1b0056edefbca123b.tar.gz blackbird-op-linux-70691d4a0bf7c871559d4ef1b0056edefbca123b.zip | |
perf/core: Replace rcu_assign_pointer() with RCU_INIT_POINTER()
The use of "rcu_assign_pointer()" is NULLing out the pointer.
According to RCU_INIT_POINTER()'s block comment:
"1. This use of RCU_INIT_POINTER() is NULLing out the pointer"
it is better to use it instead of rcu_assign_pointer() because it has a
smaller overhead.
The following Coccinelle semantic patch was used:
@@
@@
- rcu_assign_pointer
+ RCU_INIT_POINTER
(..., NULL)
Signed-off-by: Andreea-Cristina Bernat <bernat.ada@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Link: http://lkml.kernel.org/r/20140822132605.GA20130@ada
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/events')
| -rw-r--r-- | kernel/events/core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index 01bd42ed516c..f917dec6f897 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -5908,7 +5908,7 @@ static void swevent_hlist_release(struct swevent_htable *swhash) if (!hlist) return; - rcu_assign_pointer(swhash->swevent_hlist, NULL); + RCU_INIT_POINTER(swhash->swevent_hlist, NULL); kfree_rcu(hlist, rcu_head); } |
