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    SubjectRe: [PATCH 2/4] sh: Accessor functions for the sh_pmu state
    On 26.08.10 15:09:17, Matt Fleming wrote:
    > Introduce some accessor functions for getting at the name and number of
    > counters of the current sh_pmu instance.
    >
    > Signed-off-by: Matt Fleming <matt@console-pimps.org>
    > ---
    > arch/sh/include/asm/perf_event.h | 2 ++
    > arch/sh/kernel/perf_event.c | 13 +++++++++++++
    > 2 files changed, 15 insertions(+), 0 deletions(-)
    >
    > diff --git a/arch/sh/include/asm/perf_event.h b/arch/sh/include/asm/perf_event.h
    > index 3d0c9f3..5b7fa84 100644
    > --- a/arch/sh/include/asm/perf_event.h
    > +++ b/arch/sh/include/asm/perf_event.h
    > @@ -25,6 +25,8 @@ struct sh_pmu {
    > extern int register_sh_pmu(struct sh_pmu *);
    > extern int reserve_pmc_hardware(void);
    > extern void release_pmc_hardware(void);
    > +extern int sh_pmu_num_events(void);
    > +extern const char *sh_pmu_name(void);
    >
    > static inline void set_perf_event_pending(void)
    > {
    > diff --git a/arch/sh/kernel/perf_event.c b/arch/sh/kernel/perf_event.c
    > index 7a3dc35..086f788 100644
    > --- a/arch/sh/kernel/perf_event.c
    > +++ b/arch/sh/kernel/perf_event.c
    > @@ -60,6 +60,19 @@ static inline int sh_pmu_initialized(void)
    > }
    >
    > /*
    > + * Return the number of events for the current sh_pmu.
    > + */
    > +int sh_pmu_num_events(void)
    > +{
    > + return sh_pmu->num_events;
    > +}
    > +
    > +const char *sh_pmu_name(void)
    > +{
    > + return sh_pmu->name;
    > +}
    > +
    > +/*

    This probably needs EXPORT_SYMBOLS*(), but not really sure. Have you
    compiled oprofile as module?

    This accessor functions should be generic for all architectures.

    -Robert

    > * Release the PMU if this is the last perf_event.
    > */
    > static void hw_perf_event_destroy(struct perf_event *event)
    > --
    > 1.7.1
    >
    >

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



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