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perf: Register PMU implementations

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Simple registration interface for struct pmu, this provides the
infrastructure for removing all the weak functions.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: paulus <paulus@samba.org>
Cc: stephane eranian <eranian@googlemail.com>
Cc: Robert Richter <robert.richter@amd.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>
Cc: Lin Ming <ming.m.lin@intel.com>
Cc: Yanmin <yanmin_zhang@linux.intel.com>
Cc: Deng-Cheng Zhu <dengcheng.zhu@gmail.com>
Cc: David Miller <davem@davemloft.net>
Cc: Michael Cree <mcree@orcon.net.nz>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra
2010-06-11 13:35:08 +02:00
committed by Ingo Molnar
parent 51b0fe3954
commit b0a873ebbf
10 changed files with 506 additions and 430 deletions
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51
arch/alpha/kernel/perf_event.c
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@@ -642,35 +642,40 @@ static int __hw_perf_event_init(struct perf_event *event)
return 0;
}
/*
* Main entry point to initialise a HW performance event.
*/
static int alpha_pmu_event_init(struct perf_event *event)
{
int err;
switch (event->attr.type) {
case PERF_TYPE_RAW:
case PERF_TYPE_HARDWARE:
case PERF_TYPE_HW_CACHE:
break;
default:
return -ENOENT;
}
if (!alpha_pmu)
return -ENODEV;
/* Do the real initialisation work. */
err = __hw_perf_event_init(event);
return err;
}
static struct pmu pmu = {
.event_init = alpha_pmu_event_init,
.enable = alpha_pmu_enable,
.disable = alpha_pmu_disable,
.read = alpha_pmu_read,
.unthrottle = alpha_pmu_unthrottle,
};
/*
* Main entry point to initialise a HW performance event.
*/
struct pmu *hw_perf_event_init(struct perf_event *event)
{
int err;
if (!alpha_pmu)
return ERR_PTR(-ENODEV);
/* Do the real initialisation work. */
err = __hw_perf_event_init(event);
if (err)
return ERR_PTR(err);
return &pmu;
}
/*
* Main entry point - enable HW performance counters.
*/
@@ -838,5 +843,7 @@ void __init init_hw_perf_events(void)
/* And set up PMU specification */
alpha_pmu = &ev67_pmu;
perf_max_events = alpha_pmu->num_pmcs;
perf_pmu_register(&pmu);
}