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Date: Wed, 14 Jun 2023 17:17:28 -0700
From: kan.liang@...ux.intel.com
To: acme@...nel.org, mingo@...hat.com, peterz@...radead.org,
irogers@...gle.com, namhyung@...nel.org, jolsa@...nel.org,
adrian.hunter@...el.com, linux-perf-users@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: ak@...ux.intel.com, eranian@...gle.com, ahmad.yasin@...el.com,
Kan Liang <kan.liang@...ux.intel.com>
Subject: [PATCH V2 1/8] perf evsel: Fix the annotation for hardware events on hybrid
From: Kan Liang <kan.liang@...ux.intel.com>
The annotation for hardware events is wrong on hybrid. For example,
# ./perf stat -a sleep 1
Performance counter stats for 'system wide':
32,148.85 msec cpu-clock # 32.000 CPUs utilized
374 context-switches # 11.633 /sec
33 cpu-migrations # 1.026 /sec
295 page-faults # 9.176 /sec
18,979,960 cpu_core/cycles/ # 590.378 K/sec
261,230,783 cpu_atom/cycles/ # 8.126 M/sec (54.21%)
17,019,732 cpu_core/instructions/ # 529.404 K/sec
38,020,470 cpu_atom/instructions/ # 1.183 M/sec (63.36%)
3,296,743 cpu_core/branches/ # 102.546 K/sec
6,692,338 cpu_atom/branches/ # 208.167 K/sec (63.40%)
96,421 cpu_core/branch-misses/ # 2.999 K/sec
1,016,336 cpu_atom/branch-misses/ # 31.613 K/sec (63.38%)
The hardware events have extended type on hybrid, but the evsel__match()
doesn't take it into account.
Filter the config on hybrid before checking.
With the patch,
# ./perf stat -a sleep 1
Performance counter stats for 'system wide':
32,139.90 msec cpu-clock # 32.003 CPUs utilized
343 context-switches # 10.672 /sec
32 cpu-migrations # 0.996 /sec
73 page-faults # 2.271 /sec
13,712,841 cpu_core/cycles/ # 0.000 GHz
258,301,691 cpu_atom/cycles/ # 0.008 GHz (54.20%)
12,428,163 cpu_core/instructions/ # 0.91 insn per cycle
37,786,557 cpu_atom/instructions/ # 2.76 insn per cycle (63.35%)
2,418,826 cpu_core/branches/ # 75.259 K/sec
6,965,962 cpu_atom/branches/ # 216.739 K/sec (63.38%)
72,150 cpu_core/branch-misses/ # 2.98% of all branches
1,032,746 cpu_atom/branch-misses/ # 42.70% of all branches (63.35%)
Suggested-by: Ian Rogers <irogers@...gle.com>
Signed-off-by: Kan Liang <kan.liang@...ux.intel.com>
---
tools/perf/util/evsel.h | 17 ++++++++++++++---
1 file changed, 14 insertions(+), 3 deletions(-)
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index b365b449c6ea..cc6fb3049b99 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -10,6 +10,7 @@
#include <internal/evsel.h>
#include <perf/evsel.h>
#include "symbol_conf.h"
+#include "pmus.h"
struct bpf_object;
struct cgroup;
@@ -350,9 +351,19 @@ u64 format_field__intval(struct tep_format_field *field, struct perf_sample *sam
struct tep_format_field *evsel__field(struct evsel *evsel, const char *name);
-#define evsel__match(evsel, t, c) \
- (evsel->core.attr.type == PERF_TYPE_##t && \
- evsel->core.attr.config == PERF_COUNT_##c)
+static inline bool __evsel__match(const struct evsel *evsel, u32 type, u64 config)
+{
+ if (evsel->core.attr.type != type)
+ return false;
+
+ if ((type == PERF_TYPE_HARDWARE || type == PERF_TYPE_HW_CACHE) &&
+ perf_pmus__supports_extended_type())
+ return (evsel->core.attr.config & PERF_HW_EVENT_MASK) == config;
+
+ return evsel->core.attr.config == config;
+}
+
+#define evsel__match(evsel, t, c) __evsel__match(evsel, PERF_TYPE_##t, PERF_COUNT_##c)
static inline bool evsel__match2(struct evsel *e1, struct evsel *e2)
{
--
2.35.1
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