Commit-ID: 1f2569fac6c6dd5a6e3fba41c183c04273f05a58
Gitweb: http://git.kernel.org/tip/1f2569fac6c6dd5a6e3fba41c183c04273f05a58
Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate: Mon, 22 Feb 2016 22:19:14 +0000
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Mon, 29 Feb 2016 09:35:17 +0100
perf/x86/intel/uncore: Store box in event->pmu_private
Store the PMU pointer in event->pmu_private, so we can get rid of the
per CPU data storage.
We keep it after converting to per package data, because a CPU to
package lookup will be 3 loads versus one and these usage sites are
in the perf fast path.
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Cc: Andi Kleen <andi.kleen@xxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Harish Chegondi <harish.chegondi@xxxxxxxxx>
Cc: Jacob Pan <jacob.jun.pan@xxxxxxxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Kan Liang <kan.liang@xxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Cc: Vince Weaver <vincent.weaver@xxxxxxxxx>
Cc: linux-kernel@xxxxxxxxxxxxxxx
Link: http://lkml.kernel.org/r/20160222221011.460851335@xxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
arch/x86/events/intel/uncore.c | 15 +--------------
arch/x86/events/intel/uncore.h | 12 ++++++++++--
arch/x86/events/intel/uncore_snb.c | 1 +
3 files changed, 12 insertions(+), 16 deletions(-)
diff --git a/arch/x86/events/intel/uncore.c b/arch/x86/events/intel/uncore.c
index 80ee3d4..220f81c 100644
--- a/arch/x86/events/intel/uncore.c
+++ b/arch/x86/events/intel/uncore.c
@@ -92,11 +92,6 @@ ssize_t uncore_event_show(struct kobject *kobj,
return sprintf(buf, "%s", event->config);
}
-struct intel_uncore_pmu *uncore_event_to_pmu(struct perf_event *event)
-{
- return container_of(event->pmu, struct intel_uncore_pmu, pmu);
-}
-
struct intel_uncore_box *uncore_pmu_to_box(struct intel_uncore_pmu *pmu, int cpu)
{
struct intel_uncore_box *box;
@@ -122,15 +117,6 @@ out:
return *per_cpu_ptr(pmu->box, cpu);
}
-struct intel_uncore_box *uncore_event_to_box(struct perf_event *event)
-{
- /*
- * perf core schedules event on the basis of cpu, uncore events are
- * collected by one of the cpus inside a physical package.
- */
- return uncore_pmu_to_box(uncore_event_to_pmu(event), smp_processor_id());
-}
-
u64 uncore_msr_read_counter(struct intel_uncore_box *box, struct perf_event *event)
{
u64 count;
@@ -690,6 +676,7 @@ static int uncore_pmu_event_init(struct perf_event *event)
if (!box || box->cpu < 0)
return -EINVAL;
event->cpu = box->cpu;
+ event->pmu_private = box;
event->hw.idx = -1;
event->hw.last_tag = ~0ULL;
diff --git a/arch/x86/events/intel/uncore.h b/arch/x86/events/intel/uncore.h
index f118c0d..479c1e8 100644
--- a/arch/x86/events/intel/uncore.h
+++ b/arch/x86/events/intel/uncore.h
@@ -319,9 +319,17 @@ static inline bool uncore_box_is_fake(struct intel_uncore_box *box)
return (box->phys_id < 0);
}
-struct intel_uncore_pmu *uncore_event_to_pmu(struct perf_event *event);
+static inline struct intel_uncore_pmu *uncore_event_to_pmu(struct perf_event *event)
+{
+ return container_of(event->pmu, struct intel_uncore_pmu, pmu);
+}
+
+static inline struct intel_uncore_box *uncore_event_to_box(struct perf_event *event)
+{
+ return event->pmu_private;
+}
+
struct intel_uncore_box *uncore_pmu_to_box(struct intel_uncore_pmu *pmu, int cpu);
-struct intel_uncore_box *uncore_event_to_box(struct perf_event *event);
u64 uncore_msr_read_counter(struct intel_uncore_box *box, struct perf_event *event);
void uncore_pmu_start_hrtimer(struct intel_uncore_box *box);
void uncore_pmu_cancel_hrtimer(struct intel_uncore_box *box);
diff --git a/arch/x86/events/intel/uncore_snb.c b/arch/x86/events/intel/uncore_snb.c
index 120e106..96531d2 100644
--- a/arch/x86/events/intel/uncore_snb.c
+++ b/arch/x86/events/intel/uncore_snb.c
@@ -313,6 +313,7 @@ static int snb_uncore_imc_event_init(struct perf_event *event)
return -EINVAL;
event->cpu = box->cpu;
+ event->pmu_private = box;
event->hw.idx = -1;
event->hw.last_tag = ~0ULL;
--
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