summaryrefslogtreecommitdiff
path: root/include
diff options
context:
space:
mode:
authorPeter Zijlstra <a.p.zijlstra@chello.nl>2009-06-02 16:46:57 +0200
committerIngo Molnar <mingo@elte.hu>2009-06-02 21:45:32 +0200
commit08247e31ca79b8f02cce47b7e8120797a8726606 (patch)
tree1094dc286ba5033904d07d256f7d739abb4d421d /include
parent8e3747c13c39246c7e46def7cf495d9d21d4c5f9 (diff)
downloadlinux-08247e31ca79b8f02cce47b7e8120797a8726606.tar.gz
perf_counter: Add ioctl for changing the sample period/frequency
Reported-by: Stephane Eranian <eranian@googlemail.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: John Kacur <jkacur@redhat.com> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include')
-rw-r--r--include/linux/perf_counter.h9
1 files changed, 5 insertions, 4 deletions
diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h
index c046f7d97cfa..45bdd3b95d3e 100644
--- a/include/linux/perf_counter.h
+++ b/include/linux/perf_counter.h
@@ -164,10 +164,11 @@ struct perf_counter_hw_event {
/*
* Ioctls that can be done on a perf counter fd:
*/
-#define PERF_COUNTER_IOC_ENABLE _IOW('$', 0, u32)
-#define PERF_COUNTER_IOC_DISABLE _IOW('$', 1, u32)
-#define PERF_COUNTER_IOC_REFRESH _IOW('$', 2, u32)
-#define PERF_COUNTER_IOC_RESET _IOW('$', 3, u32)
+#define PERF_COUNTER_IOC_ENABLE _IO ('$', 0)
+#define PERF_COUNTER_IOC_DISABLE _IO ('$', 1)
+#define PERF_COUNTER_IOC_REFRESH _IO ('$', 2)
+#define PERF_COUNTER_IOC_RESET _IO ('$', 3)
+#define PERF_COUNTER_IOC_PERIOD _IOW('$', 4, u64)
enum perf_counter_ioc_flags {
PERF_IOC_FLAG_GROUP = 1U << 0,