[PATCH V2 3/6] perf,tools: Dump per-sample freq/CPU%/CORE_BUSY% in report -D

[kan.liang@intel.com]

From: Kan Liang <kan.liang@intel.com>

The group read results from cycles/ref-cycles/TSC/ASTATE/MSTATE event
can be used to calculate the frequency, CPU Utilization and percent
performance during each sampling period.
This patch shows them in report -D.

Here is an example:

$ perf record -e
'{cycles,ref-cycles,msr/tsc/,msr/mperf/,msr/aperf/}:S' ~/tchain_edit

Here is one sample from perf report -D

1972044565107 0x3498 [0x88]: PERF_RECORD_SAMPLE(IP, 0x2): 10608/10608:
0x4005fd period: 564686 addr: 0
... sample_read:
.... group nr 5
..... id 0000000000000012, value 0000000002143901
..... id 0000000000000052, value 0000000002143896
..... id 0000000000000094, value 00000000021e443d
..... id 00000000000000d4, value 00000000021db984
..... id 0000000000000114, value 00000000021db964
..... Freq 2301 MHz
..... CPU% 98%
..... CORE_BUSY% 99%

Signed-off-by: Kan Liang <kan.liang@intel.com>
---
 tools/perf/util/session.c | 33 ++++++++++++++++++++++++++++-----
 tools/perf/util/session.h | 38 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 66 insertions(+), 5 deletions(-)

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index ed9dc25..7f628d9 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -851,8 +851,14 @@ static void perf_evlist__print_tstamp(struct perf_evlist *evlist,
 		printf("%" PRIu64 " ", sample->time);
 }
 
-static void sample_read__printf(struct perf_sample *sample, u64 read_format)
+static void sample_read__printf(struct perf_evlist *evlist,
+				struct perf_sample *sample,
+				u64 read_format)
 {
+	struct perf_evsel *evsel;
+	struct perf_sample_id *sid;
+	u64 data[FREQ_PERF_MAX] = { 0 };
+
 	printf("... sample_read:\n");
 
 	if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
@@ -875,10 +881,26 @@ static void sample_read__printf(struct perf_sample *sample, u64 read_format)
 			printf("..... id %016" PRIx64
 			       ", value %016" PRIx64 "\n",
 			       value->id, value->value);
+
+			sid = perf_evlist__id2sid(evlist, value->id);
+			evsel = sid->evsel;
+			if (evsel != NULL)
+				SET_FREQ_PERF_VALUE(evsel, data,
+						    value->value);
 		}
 	} else
 		printf("..... id %016" PRIx64 ", value %016" PRIx64 "\n",
 			sample->read.one.id, sample->read.one.value);
+
+	if (HAS_FREQ(data))
+		printf("..... Freq %lu MHz\n",
+		       (data[FREQ_PERF_CYCLES] * cpu_max_freq) / data[FREQ_PERF_REF_CYCLES]);
+	if (HAS_CPU_U(data))
+		printf("..... CPU%% %lu%%\n",
+		       (100 * data[FREQ_PERF_REF_CYCLES]) / data[FREQ_PERF_TSC]);
+	if (HAS_CORE_BUSY(data))
+		printf("..... CORE_BUSY%% %lu%%\n",
+		       (100 * data[FREQ_PERF_APERF]) / data[FREQ_PERF_MPERF]);
 }
 
 static void dump_event(struct perf_evlist *evlist, union perf_event *event,
@@ -899,8 +921,8 @@ static void dump_event(struct perf_evlist *evlist, union perf_event *event,
 	       event->header.size, perf_event__name(event->header.type));
 }
 
-static void dump_sample(struct perf_evsel *evsel, union perf_event *event,
-			struct perf_sample *sample)
+static void dump_sample(struct perf_evlist *evlist, struct perf_evsel *evsel,
+			union perf_event *event, struct perf_sample *sample)
 {
 	u64 sample_type;
 
@@ -938,7 +960,7 @@ static void dump_sample(struct perf_evsel *evsel, union perf_event *event,
 		printf("... transaction: %" PRIx64 "\n", sample->transaction);
 
 	if (sample_type & PERF_SAMPLE_READ)
-		sample_read__printf(sample, evsel->attr.read_format);
+		sample_read__printf(evlist, sample, evsel->attr.read_format);
 }
 
 static struct machine *machines__find_for_cpumode(struct machines *machines,
@@ -1053,11 +1075,12 @@ static int machines__deliver_event(struct machines *machines,
 
 	switch (event->header.type) {
 	case PERF_RECORD_SAMPLE:
-		dump_sample(evsel, event, sample);
 		if (evsel == NULL) {
 			++evlist->stats.nr_unknown_id;
 			return 0;
 		}
+		dump_sample(evlist, evsel, event, sample);
+
 		if (machine == NULL) {
 			++evlist->stats.nr_unprocessable_samples;
 			return 0;
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index a339338..db218ba 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -43,6 +43,44 @@ struct perf_session {
 #define PRINT_IP_OPT_ONELINE	(1<<4)
 #define PRINT_IP_OPT_SRCLINE	(1<<5)
 
+#define PERF_MSR_TSC		0
+#define PERF_MSR_APERF		1
+#define PERF_MSR_MPERF		2
+
+enum perf_freq_perf_index {
+	FREQ_PERF_TSC		= 0,
+	FREQ_PERF_APERF		= 1,
+	FREQ_PERF_MPERF		= 2,
+	FREQ_PERF_CYCLES	= 3,
+	FREQ_PERF_REF_CYCLES	= 4,
+
+	FREQ_PERF_MAX
+};
+
+#define SET_FREQ_PERF_VALUE(event, array, value)			\
+{									\
+	if (event->attr.type == msr_pmu_type) {				\
+		if (event->attr.config == PERF_MSR_TSC)			\
+			array[FREQ_PERF_TSC] = value;			\
+		if (event->attr.config == PERF_MSR_APERF)		\
+			array[FREQ_PERF_APERF] = value;			\
+		if (event->attr.config == PERF_MSR_MPERF)		\
+			array[FREQ_PERF_MPERF] = value;			\
+	}								\
+	if (event->attr.type == PERF_TYPE_HARDWARE) {			\
+		if (event->attr.config == PERF_COUNT_HW_CPU_CYCLES)	\
+			array[FREQ_PERF_CYCLES] = value;		\
+		if (event->attr.config == PERF_COUNT_HW_REF_CPU_CYCLES)	\
+			array[FREQ_PERF_REF_CYCLES] = value;		\
+	}								\
+}
+
+#define HAS_FREQ(array)							\
+	((array[FREQ_PERF_CYCLES] > 0) && (array[FREQ_PERF_REF_CYCLES] > 0))
+#define HAS_CPU_U(array)						\
+	((array[FREQ_PERF_TSC] > 0) && (array[FREQ_PERF_REF_CYCLES] > 0))
+#define HAS_CORE_BUSY(array)						\
+	((array[FREQ_PERF_APERF] > 0) && (array[FREQ_PERF_MPERF] > 0))
 struct perf_tool;
 
 struct perf_session *perf_session__new(struct perf_data_file *file,
-- 
1.8.3.1