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perf/x86/uncore: add ability to customize pmu callbacks 

This patch enables custom struct pmu callbacks per uncore
PMU types. This feature may be used to simplify counter
setup for certain uncore PMUs which have free running
counters for instance. It becomes possible to bypass
the event scheduling phase of the configuration.

Cc: mingo@elte.hu
Cc: acme@redhat.com
Cc: ak@linux.intel.com
Cc: zheng.z.yan@intel.com
Cc: peterz@infradead.org
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1392132015-14521-3-git-send-email-eranian@google.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Stephane Eranian 2014-02-11 16:20:08 +01:00 committed by Thomas Gleixner
parent 411cf180fa
commit d64b25b6a0
2 changed files with 16 additions and 10 deletions
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25
arch/x86/kernel/cpu/perf_event_intel_uncore.c
View File

@ -3271,16 +3271,21 @@ static int __init uncore_pmu_register(struct intel_uncore_pmu *pmu)
{
int ret;
pmu->pmu = (struct pmu) {
.attr_groups = pmu->type->attr_groups,
.task_ctx_nr = perf_invalid_context,
.event_init = uncore_pmu_event_init,
.add = uncore_pmu_event_add,
.del = uncore_pmu_event_del,
.start = uncore_pmu_event_start,
.stop = uncore_pmu_event_stop,
.read = uncore_pmu_event_read,
};
if (!pmu->type->pmu) {
pmu->pmu = (struct pmu) {
.attr_groups = pmu->type->attr_groups,
.task_ctx_nr = perf_invalid_context,
.event_init = uncore_pmu_event_init,
.add = uncore_pmu_event_add,
.del = uncore_pmu_event_del,
.start = uncore_pmu_event_start,
.stop = uncore_pmu_event_stop,
.read = uncore_pmu_event_read,
};
} else {
pmu->pmu = *pmu->type->pmu;
pmu->pmu.attr_groups = pmu->type->attr_groups;
}
if (pmu->type->num_boxes == 1) {
if (strlen(pmu->type->name) > 0)

1
arch/x86/kernel/cpu/perf_event_intel_uncore.h
View File

@ -440,6 +440,7 @@ struct intel_uncore_type {
struct intel_uncore_ops *ops;
struct uncore_event_desc *event_descs;
const struct attribute_group *attr_groups[4];
struct pmu *pmu; /* for custom pmu ops */
};
#define pmu_group attr_groups[0]