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authorIngo Molnar <mingo@elte.hu>2010-04-08 13:36:36 +0200
committerIngo Molnar <mingo@elte.hu>2010-04-08 13:37:18 +0200
commitca7e0c612005937a4a5a75d3fed90459993de65c (patch)
treeb574fc0f0189b52ffc87ba20c418228db556faa1 /lib/ratelimit.c
parent8141d0050d76e5695011b5ab577ec66fb51a998c (diff)
parentf5284e7635787224dda1a2bf82a4c56b1c75671f (diff)
Merge branch 'linus' into perf/core
Semantic conflict: arch/x86/kernel/cpu/perf_event_intel_ds.c Merge reason: pick up latest fixes, fix the conflict Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'lib/ratelimit.c')
-rw-r--r--lib/ratelimit.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/lib/ratelimit.c b/lib/ratelimit.c
index 09f5ce1810d..027a03f4c56 100644
--- a/lib/ratelimit.c
+++ b/lib/ratelimit.c
@@ -16,9 +16,14 @@
/*
* __ratelimit - rate limiting
* @rs: ratelimit_state data
+ * @func: name of calling function
*
- * This enforces a rate limit: not more than @rs->ratelimit_burst callbacks
- * in every @rs->ratelimit_jiffies
+ * This enforces a rate limit: not more than @rs->burst callbacks
+ * in every @rs->interval
+ *
+ * RETURNS:
+ * 0 means callbacks will be suppressed.
+ * 1 means go ahead and do it.
*/
int ___ratelimit(struct ratelimit_state *rs, const char *func)
{
@@ -35,7 +40,7 @@ int ___ratelimit(struct ratelimit_state *rs, const char *func)
* the entity that is holding the lock already:
*/
if (!spin_trylock_irqsave(&rs->lock, flags))
- return 1;
+ return 0;
if (!rs->begin)
rs->begin = jiffies;