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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-06-02 16:46:57 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-06-02 21:45:32 +0200 |
| commit | 08247e31ca79b8f02cce47b7e8120797a8726606 (patch) | |
| tree | 1094dc286ba5033904d07d256f7d739abb4d421d /include | |
| parent | 8e3747c13c39246c7e46def7cf495d9d21d4c5f9 (diff) | |
| download | op-kernel-dev-08247e31ca79b8f02cce47b7e8120797a8726606.zip op-kernel-dev-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.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h index c046f7d..45bdd3b 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, |
