linux-kernel - [PATCH] perf_counter: Fix throttle/unthrottle event logging

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Date:	Wed, 22 Jul 2009 23:05:46 +1000
From:	Anton Blanchard <anton@...ba.org>
To:	a.p.zijlstra@...llo.nl, mingo@...e.hu, paulus@...ba.org,
	fweisbec@...il.com
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH] perf_counter: Fix throttle/unthrottle event logging


Right now we only print PERF_EVENT_THROTTLE + 1 (ie PERF_EVENT_UNTHROTTLE).
Fix this to print both a throttle and unthrottle event.

Signed-off-by: Anton Blanchard <anton@...ba.org>
---

Index: linux.trees.git/kernel/perf_counter.c
===================================================================
--- linux.trees.git.orig/kernel/perf_counter.c	2009-07-22 22:43:36.000000000 +1000
+++ linux.trees.git/kernel/perf_counter.c	2009-07-22 22:55:10.000000000 +1000
@@ -3195,7 +3195,7 @@ static void perf_log_throttle(struct per
 		u64				stream_id;
 	} throttle_event = {
 		.header = {
-			.type = PERF_EVENT_THROTTLE + 1,
+			.type = PERF_EVENT_THROTTLE,
 			.misc = 0,
 			.size = sizeof(throttle_event),
 		},
@@ -3204,6 +3204,9 @@ static void perf_log_throttle(struct per
 		.stream_id	= counter->id,
 	};
 
+	if (enable)
+		throttle_event.header.type = PERF_EVENT_UNTHROTTLE;
+
 	ret = perf_output_begin(&handle, counter, sizeof(throttle_event), 1, 0);
 	if (ret)
 		return;
--
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