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authorIngo Molnar <mingo@kernel.org>2018-03-29 16:03:48 +0200
committerIngo Molnar <mingo@kernel.org>2018-03-29 16:03:48 +0200
commit2d074918fb1568f398777343ff9a28049fb86337 (patch)
tree84277c1471f6d575a9515d42a53345666addabc8 /lib/percpu-refcount.c
parent78282bec4b4a02a13b87d01fbe529396d37db926 (diff)
parentf67b15037a7a50c57f72e69a6d59941ad90a0f0f (diff)
Merge branch 'perf/urgent' into perf/core
Conflicts: kernel/events/hw_breakpoint.c Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'lib/percpu-refcount.c')
-rw-r--r--lib/percpu-refcount.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/percpu-refcount.c b/lib/percpu-refcount.c
index 30e7dd88148b..9f96fa7bc000 100644
--- a/lib/percpu-refcount.c
+++ b/lib/percpu-refcount.c
@@ -322,6 +322,8 @@ EXPORT_SYMBOL_GPL(percpu_ref_switch_to_percpu);
* This function normally doesn't block and can be called from any context
* but it may block if @confirm_kill is specified and @ref is in the
* process of switching to atomic mode by percpu_ref_switch_to_atomic().
+ *
+ * There are no implied RCU grace periods between kill and release.
*/
void percpu_ref_kill_and_confirm(struct percpu_ref *ref,
percpu_ref_func_t *confirm_kill)