[PATCH V10 3/8] perf,tools: caculate freq per sample

[kan . liang]

From: Kan Liang <kan.liang@xxxxxxxxx>

This patch store the vaule for calculating frequency, CPU Utilization
and percent performance in struct perf_sample, when sample group read
is detected and dump_trace is enabled.

Signed-off-by: Kan Liang <kan.liang@xxxxxxxxx>
---
 tools/perf/util/event.h   |  3 +++
 tools/perf/util/session.c | 26 +++++++++++++++++++++++++-
 tools/perf/util/session.h | 25 +++++++++++++++++++++++++
 3 files changed, 53 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 3439462..edffeca 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -187,6 +187,8 @@ enum perf_freqs {
 	PERF_FREQ_MAX
 };
 
+typedef u64 perf_freq_t[PERF_FREQ_MAX];
+
 struct perf_sample {
 	u64 ip;
 	u32 pid, tid;
@@ -202,6 +204,7 @@ struct perf_sample {
 	u64 data_src;
 	u32 flags;
 	u16 insn_len;
+	perf_freq_t freq;
 	void *raw_data;
 	struct ip_callchain *callchain;
 	struct branch_stack *branch_stack;
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index d1a43a3..e8cb98d 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -7,7 +7,6 @@
 #include <sys/mman.h>
 
 #include "evlist.h"
-#include "evsel.h"
 #include "session.h"
 #include "tool.h"
 #include "sort.h"
@@ -1047,6 +1046,26 @@ static int
 					    &sample->read.one, machine);
 }
 
+static void perf_caculate_freq(struct perf_sample *sample,
+			       struct perf_evsel *evsel)
+{
+	u64 i;
+	struct perf_evlist *evlist = evsel->evlist;
+	struct sample_read_value *value;
+	struct perf_sample_id *sid;
+	struct perf_evsel *event;
+
+	for (i = 0; i < sample->read.group.nr; i++) {
+
+		value = &sample->read.group.values[i];
+		sid = perf_evlist__id2sid(evlist, value->id);
+		event = sid->evsel;
+		if (event != NULL)
+			perf_freq__init(evlist->env->msr_pmu_type,
+					event, sample->freq, value->value);
+	}
+}
+
 static int machines__deliver_event(struct machines *machines,
 				   struct perf_evlist *evlist,
 				   union perf_event *event,
@@ -1068,6 +1087,11 @@ static int machines__deliver_event(struct machines *machines,
 			++evlist->stats.nr_unknown_id;
 			return 0;
 		}
+		if (dump_trace &&
+		    (evsel->attr.sample_type & PERF_SAMPLE_READ) &&
+		    (evsel->attr.read_format & PERF_FORMAT_GROUP))
+			perf_caculate_freq(sample, evsel);
+
 		dump_sample(evsel, event, sample);
 		if (machine == NULL) {
 			++evlist->stats.nr_unprocessable_samples;
diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
index b44afc7..f70d3a1 100644
--- a/tools/perf/util/session.h
+++ b/tools/perf/util/session.h
@@ -9,6 +9,7 @@
 #include "thread.h"
 #include "data.h"
 #include "ordered-events.h"
+#include "evsel.h"
 #include <linux/rbtree.h>
 #include <linux/perf_event.h>
 
@@ -42,6 +43,30 @@ 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
+
+static inline void perf_freq__init(unsigned int msr_pmu_type,
+				   struct perf_evsel *evsel,
+				   perf_freq_t array,
+				   u64 value)
+{
+	if (evsel->attr.type == msr_pmu_type) {
+		if (evsel->attr.config == PERF_MSR_TSC)
+			array[PERF_FREQ_TSC] = value;
+		if (evsel->attr.config == PERF_MSR_APERF)
+			array[PERF_FREQ_APERF] = value;
+		if (evsel->attr.config == PERF_MSR_MPERF)
+			array[PERF_FREQ_MPERF] = value;
+	}
+	if (evsel->attr.type == PERF_TYPE_HARDWARE) {
+		if (evsel->attr.config == PERF_COUNT_HW_CPU_CYCLES)
+			array[PERF_FREQ_CYCLES] = value;
+		if (evsel->attr.config == PERF_COUNT_HW_REF_CPU_CYCLES)
+			array[PERF_FREQ_REF_CYCLES] = value;
+	}
+}
 struct perf_tool;
 
 struct perf_session *perf_session__new(struct perf_data_file *file,
-- 
1.8.3.1

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