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SubjectRe: [PATCH 2/7] perf: New helper function for pmu name
On 08.10.10 20:46:17, Matt Fleming wrote:
> Introduce perf_pmu_name() helper function that returns the name of the
> pmu. This gives us a generic way to get the name of a pmu regardless of
> how an architecture identifies it internally.
>
> Signed-off-by: Matt Fleming <matt@console-pimps.org>

Peter, I need your ack here.

Thanks,

-Robert

> ---
> arch/sh/kernel/perf_event.c | 9 +++++++++
> include/linux/perf_event.h | 1 +
> kernel/perf_event.c | 5 +++++
> 3 files changed, 15 insertions(+), 0 deletions(-)
>
> diff --git a/arch/sh/kernel/perf_event.c b/arch/sh/kernel/perf_event.c
> index 2cb9ad5..55fe89b 100644
> --- a/arch/sh/kernel/perf_event.c
> +++ b/arch/sh/kernel/perf_event.c
> @@ -59,6 +59,15 @@ static inline int sh_pmu_initialized(void)
> return !!sh_pmu;
> }
>
> +const char *perf_pmu_name(void)
> +{
> + if (!sh_pmu)
> + return NULL;
> +
> + return sh_pmu->name;
> +}
> +EXPORT_SYMBOL_GPL(perf_pmu_name);
> +
> int perf_num_counters(void)
> {
> if (!sh_pmu)
> diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
> index 1a02192..33f08da 100644
> --- a/include/linux/perf_event.h
> +++ b/include/linux/perf_event.h
> @@ -850,6 +850,7 @@ extern int perf_max_events;
> extern const struct pmu *hw_perf_event_init(struct perf_event *event);
>
> extern int perf_num_counters(void);
> +extern const char *perf_pmu_name(void);
> extern void perf_event_task_sched_in(struct task_struct *task);
> extern void perf_event_task_sched_out(struct task_struct *task, struct task_struct *next);
> extern void perf_event_task_tick(struct task_struct *task);
> diff --git a/kernel/perf_event.c b/kernel/perf_event.c
> index db5b560..fc51268 100644
> --- a/kernel/perf_event.c
> +++ b/kernel/perf_event.c
> @@ -85,6 +85,11 @@ void __weak hw_perf_enable(void) { barrier(); }
>
> void __weak perf_event_print_debug(void) { }
>
> +extern __weak const char *perf_pmu_name(void)
> +{
> + return "pmu";
> +}
> +
> static DEFINE_PER_CPU(int, perf_disable_count);
>
> void perf_disable(void)
> --
> 1.7.1
>
>

--
Advanced Micro Devices, Inc.
Operating System Research Center



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