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authorAndreea-Cristina Bernat <bernat.ada@gmail.com>2014-08-22 16:26:05 +0300
committerIngo Molnar <mingo@kernel.org>2014-09-09 06:53:05 +0200
commit70691d4a0bf7c871559d4ef1b0056edefbca123b (patch)
treee867513ecdbe5cf49356e98acbf686ba82ae59e7 /kernel/events
parente0455e194a5e0cf49bc7596a20d4f7e47995b9c6 (diff)
downloadblackbird-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.c2
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);
}
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