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yaml --- r: 310591 b: refs/heads/master c: a59e64a h: refs/heads/master i: 310589: bb4fe2a 310587: 225261c 310583: 1c6be29 310575: 58acb5f 310559: 6a309fe 310527: d40fcc4 v: v3
git-mirror · May 31, 2012 · 01b4ff9 · 01b4ff9
1 parent 48e525f
commit 01b4ff9
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diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: aa5cdd308ddbb08959534be408eba8ef040b5989
+refs/heads/master: a59e64a13a927fb7530bef39e9f5e7de8268137e
diff --git a/trunk/tools/perf/design.txt b/trunk/tools/perf/design.txt
@@ -409,14 +409,15 @@ Counters can be enabled and disabled in two ways: via ioctl and via
 prctl.  When a counter is disabled, it doesn't count or generate
 events but does continue to exist and maintain its count value.
 
-An individual counter or counter group can be enabled with
+An individual counter can be enabled with
 
-	ioctl(fd, PERF_EVENT_IOC_ENABLE);
+	ioctl(fd, PERF_EVENT_IOC_ENABLE, 0);
 
 or disabled with
 
-	ioctl(fd, PERF_EVENT_IOC_DISABLE);
+	ioctl(fd, PERF_EVENT_IOC_DISABLE, 0);
 
+For a counter group, pass PERF_IOC_FLAG_GROUP as the third argument.
 Enabling or disabling the leader of a group enables or disables the
 whole group; that is, while the group leader is disabled, none of the
 counters in the group will count.  Enabling or disabling a member of a