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Date: Wed, 16 Aug 2017 18:18:33 +0800
From: Jin Yao <yao.jin@...ux.intel.com>
To: acme@...nel.org, jolsa@...nel.org, peterz@...radead.org,
mingo@...hat.com, alexander.shishkin@...ux.intel.com
Cc: Linux-kernel@...r.kernel.org, ak@...ux.intel.com,
kan.liang@...el.com, yao.jin@...el.com,
Jin Yao <yao.jin@...ux.intel.com>
Subject: [PATCH v1 1/4] perf annotate: create a new hists to manage multiple events samples
An issue is found during using perf annotate.
perf record -e cycles,branches ...
perf annotate main --stdio
The result only shows cycles. It should show both cycles and
branches on the left side. It works with "--group", but need
this to work even without groups.
In current design, the hists is per event. So we need a new
hists to manage the samples for multiple events and use a new
hist_event data structure to save the map/symbol information
for per event.
Signed-off-by: Jin Yao <yao.jin@...ux.intel.com>
---
tools/perf/builtin-annotate.c | 60 +++++++++++++++++++++++++++++++------------
tools/perf/util/annotate.c | 8 ++++++
tools/perf/util/annotate.h | 4 +++
tools/perf/util/sort.c | 21 +++++++++++++++
tools/perf/util/sort.h | 13 ++++++++++
5 files changed, 89 insertions(+), 17 deletions(-)
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 658c920..833866c 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -45,6 +45,7 @@ struct perf_annotate {
bool skip_missing;
const char *sym_hist_filter;
const char *cpu_list;
+ struct hists events_hists;
DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
};
@@ -153,6 +154,7 @@ static int perf_evsel__add_sample(struct perf_evsel *evsel,
struct hists *hists = evsel__hists(evsel);
struct hist_entry *he;
int ret;
+ struct hist_event *hevt;
if (ann->sym_hist_filter != NULL &&
(al->sym == NULL ||
@@ -177,12 +179,30 @@ static int perf_evsel__add_sample(struct perf_evsel *evsel,
*/
process_branch_stack(sample->branch_stack, al, sample);
- he = hists__add_entry(hists, al, NULL, NULL, NULL, sample, true);
- if (he == NULL)
- return -ENOMEM;
+ if (symbol_conf.nr_events == 1) {
+ he = hists__add_entry(hists, al, NULL, NULL, NULL,
+ sample, true);
+ if (he == NULL)
+ return -ENOMEM;
+
+ ret = hist_entry__inc_addr_samples(he, sample, evsel->idx,
+ al->addr);
+ hists__inc_nr_samples(hists, true);
+ } else {
+ he = hists__add_entry(&ann->events_hists, al, NULL,
+ NULL, NULL, sample, true);
+ if (he == NULL)
+ return -ENOMEM;
+
+ hevt = hist_entry__event_add(he, evsel);
+ if (hevt == NULL)
+ return -ENOMEM;
+
+ ret = hist_event__inc_addr_samples(hevt, sample, hevt->idx,
+ al->addr);
+ hists__inc_nr_samples(&ann->events_hists, true);
+ }
- ret = hist_entry__inc_addr_samples(he, sample, evsel->idx, al->addr);
- hists__inc_nr_samples(hists, true);
return ret;
}
@@ -304,7 +324,8 @@ static int __cmd_annotate(struct perf_annotate *ann)
int ret;
struct perf_session *session = ann->session;
struct perf_evsel *pos;
- u64 total_nr_samples;
+ u64 total_nr_samples = 0;
+ struct hists *hists;
if (ann->cpu_list) {
ret = perf_session__cpu_bitmap(session, ann->cpu_list,
@@ -335,23 +356,26 @@ static int __cmd_annotate(struct perf_annotate *ann)
if (verbose > 2)
perf_session__fprintf_dsos(session, stdout);
- total_nr_samples = 0;
- evlist__for_each_entry(session->evlist, pos) {
- struct hists *hists = evsel__hists(pos);
- u32 nr_samples = hists->stats.nr_events[PERF_RECORD_SAMPLE];
+ if (symbol_conf.nr_events > 1) {
+ hists = &ann->events_hists;
+ total_nr_samples +=
+ hists->stats.nr_events[PERF_RECORD_SAMPLE];
+
+ hists__collapse_resort(hists, NULL);
+ hists__output_resort(hists, NULL);
+ hists__find_annotations(hists, NULL, ann);
+ } else {
+ evlist__for_each_entry(session->evlist, pos) {
+ hists = evsel__hists(pos);
+ total_nr_samples +=
+ hists->stats.nr_events[PERF_RECORD_SAMPLE];
- if (nr_samples > 0) {
- total_nr_samples += nr_samples;
hists__collapse_resort(hists, NULL);
/* Don't sort callchain */
perf_evsel__reset_sample_bit(pos, CALLCHAIN);
perf_evsel__output_resort(pos, NULL);
-
- if (symbol_conf.event_group &&
- !perf_evsel__is_group_leader(pos))
- continue;
-
hists__find_annotations(hists, pos, ann);
+ break;
}
}
@@ -486,6 +510,8 @@ int cmd_annotate(int argc, const char **argv)
if (ret < 0)
goto out_delete;
+ __hists__init(&annotate.events_hists, &perf_hpp_list);
+
if (setup_sorting(NULL) < 0)
usage_with_options(annotate_usage, options);
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 2dab0e5..16ec881 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -828,6 +828,14 @@ int hist_entry__inc_addr_samples(struct hist_entry *he, struct perf_sample *samp
return symbol__inc_addr_samples(he->ms.sym, he->ms.map, evidx, ip, sample);
}
+int hist_event__inc_addr_samples(struct hist_event *hevt,
+ struct perf_sample *sample,
+ int idx, u64 ip)
+{
+ return symbol__inc_addr_samples(hevt->ms.sym, hevt->ms.map,
+ idx, ip, sample);
+}
+
static void disasm_line__init_ins(struct disasm_line *dl, struct arch *arch, struct map *map)
{
dl->ins.ops = ins__find(arch, dl->ins.name);
diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h
index 9ce575c..0d44cfe 100644
--- a/tools/perf/util/annotate.h
+++ b/tools/perf/util/annotate.h
@@ -165,6 +165,10 @@ int addr_map_symbol__account_cycles(struct addr_map_symbol *ams,
int hist_entry__inc_addr_samples(struct hist_entry *he, struct perf_sample *sample,
int evidx, u64 addr);
+int hist_event__inc_addr_samples(struct hist_event *hevt,
+ struct perf_sample *sample,
+ int idx, u64 addr);
+
int symbol__alloc_hist(struct symbol *sym);
void symbol__annotate_zero_histograms(struct symbol *sym);
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 12359bd..1500a8e 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -1490,6 +1490,27 @@ struct sort_entry sort_sym_size = {
.se_width_idx = HISTC_SYM_SIZE,
};
+struct hist_event *hist_entry__event_add(struct hist_entry *he,
+ struct perf_evsel *evsel)
+{
+ int i;
+
+ for (i = 0; i < he->event_nr; i++) {
+ if (he->events[i].evsel == evsel)
+ return &he->events[i];
+ }
+
+ if (i < HIST_ENTRY_EVENTS) {
+ memset(&he->events[i], 0, sizeof(struct hist_event));
+ memcpy(&he->events[i].ms, &he->ms, sizeof(struct map_symbol));
+ he->events[i].evsel = evsel;
+ he->events[i].idx = i;
+ he->event_nr++;
+ return &he->events[i];
+ }
+
+ return NULL;
+}
struct sort_dimension {
const char *name;
diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h
index b7c7559..446a2a3 100644
--- a/tools/perf/util/sort.h
+++ b/tools/perf/util/sort.h
@@ -79,6 +79,14 @@ struct hist_entry_ops {
void (*free)(void *ptr);
};
+#define HIST_ENTRY_EVENTS 8
+
+struct hist_event {
+ struct map_symbol ms;
+ struct perf_evsel *evsel;
+ int idx;
+};
+
/**
* struct hist_entry - histogram entry
*
@@ -95,6 +103,8 @@ struct hist_entry {
struct he_stat stat;
struct he_stat *stat_acc;
struct map_symbol ms;
+ struct hist_event events[HIST_ENTRY_EVENTS];
+ int event_nr;
struct thread *thread;
struct comm *comm;
struct namespace_id cgroup_id;
@@ -291,4 +301,7 @@ sort__daddr_cmp(struct hist_entry *left, struct hist_entry *right);
int64_t
sort__dcacheline_cmp(struct hist_entry *left, struct hist_entry *right);
char *hist_entry__get_srcline(struct hist_entry *he);
+struct hist_event *hist_entry__event_add(struct hist_entry *he,
+ struct perf_evsel *evsel);
+
#endif /* __PERF_SORT_H */
--
2.7.4
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