[PATCH 03/36] perf record: Synthesize unit/scale/... in event update

Arnaldo Carvalho de Melo
2017-12-06T14:41:57Z

From: Andi Kleen <ak@linux.intel.com>

Move the code to synthesize event updates for scale/unit/cpus to a
common utility file, and use it both from stat and record.

This allows to access scale and other extra qualifiers from perf script.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20171117214300.32746-2-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/builtin-record.c | 9 ++++++
tools/perf/builtin-stat.c | 62 +++--------------------------------------
tools/perf/util/header.c | 68 +++++++++++++++++++++++++++++++++++++++++++++
tools/perf/util/header.h | 5 ++++
4 files changed, 86 insertions(+), 58 deletions(-)

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 003255910c05..b92d6d67bca8 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -372,6 +372,8 @@ static int record__open(struct record *rec)
ui__error("%s\n", msg);
goto out;
}
+
+ pos->supported = true;
}

if (perf_evlist__apply_filters(evlist, &pos)) {
@@ -784,6 +786,13 @@ static int record__synthesize(struct record *rec, bool tail)
perf_event__synthesize_guest_os, tool);
}

+ err = perf_event__synthesize_extra_attr(&rec->tool,
+ rec->evlist,
+ process_synthesized_event,
+ data->is_pipe);
+ if (err)
+ goto out;
+
err = __machine__synthesize_threads(machine, tool, &opts->target, rec->evlist->threads,
process_synthesized_event, opts->sample_address,
opts->proc_map_timeout, 1);
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 59af5a8419e2..a027b4712e48 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -458,19 +458,8 @@ static void workload_exec_failed_signal(int signo __maybe_unused, siginfo_t *inf
workload_exec_errno = info->si_value.sival_int;
}

-static bool has_unit(struct perf_evsel *counter)
-{
- return counter->unit && *counter->unit;
-}
-
-static bool has_scale(struct perf_evsel *counter)
-{
- return counter->scale != 1;
-}
-
static int perf_stat_synthesize_config(bool is_pipe)
{
- struct perf_evsel *counter;
int err;

if (is_pipe) {
@@ -482,53 +471,10 @@ static int perf_stat_synthesize_config(bool is_pipe)
}
}

- /*
- * Synthesize other events stuff not carried within
- * attr event - unit, scale, name
- */
- evlist__for_each_entry(evsel_list, counter) {
- if (!counter->supported)
- continue;
-
- /*
- * Synthesize unit and scale only if it's defined.
- */
- if (has_unit(counter)) {
- err = perf_event__synthesize_event_update_unit(NULL, counter, process_synthesized_event);
- if (err < 0) {
- pr_err("Couldn't synthesize evsel unit.\n");
- return err;
- }
- }
-
- if (has_scale(counter)) {
- err = perf_event__synthesize_event_update_scale(NULL, counter, process_synthesized_event);
- if (err < 0) {
- pr_err("Couldn't synthesize evsel scale.\n");
- return err;
- }
- }
-
- if (counter->own_cpus) {
- err = perf_event__synthesize_event_update_cpus(NULL, counter, process_synthesized_event);
- if (err < 0) {
- pr_err("Couldn't synthesize evsel scale.\n");
- return err;
- }
- }
-
- /*
- * Name is needed only for pipe output,
- * perf.data carries event names.
- */
- if (is_pipe) {
- err = perf_event__synthesize_event_update_name(NULL, counter, process_synthesized_event);
- if (err < 0) {
- pr_err("Couldn't synthesize evsel name.\n");
- return err;
- }
- }
- }
+ err = perf_event__synthesize_extra_attr(NULL,
+ evsel_list,
+ process_synthesized_event,
+ is_pipe);

err = perf_event__synthesize_thread_map2(NULL, evsel_list->threads,
process_synthesized_event,
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 7c0e9d587bfa..5890e08e0754 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -3258,6 +3258,74 @@ int perf_event__synthesize_attrs(struct perf_tool *tool,
return err;
}

+static bool has_unit(struct perf_evsel *counter)
+{
+ return counter->unit && *counter->unit;
+}
+
+static bool has_scale(struct perf_evsel *counter)
+{
+ return counter->scale != 1;
+}
+
+int perf_event__synthesize_extra_attr(struct perf_tool *tool,
+ struct perf_evlist *evsel_list,
+ perf_event__handler_t process,
+ bool is_pipe)
+{
+ struct perf_evsel *counter;
+ int err;
+
+ /*
+ * Synthesize other events stuff not carried within
+ * attr event - unit, scale, name
+ */
+ evlist__for_each_entry(evsel_list, counter) {
+ if (!counter->supported)
+ continue;
+
+ /*
+ * Synthesize unit and scale only if it's defined.
+ */
+ if (has_unit(counter)) {
+ err = perf_event__synthesize_event_update_unit(tool, counter, process);
+ if (err < 0) {
+ pr_err("Couldn't synthesize evsel unit.\n");
+ return err;
+ }
+ }
+
+ if (has_scale(counter)) {
+ err = perf_event__synthesize_event_update_scale(tool, counter, process);
+ if (err < 0) {
+ pr_err("Couldn't synthesize evsel counter.\n");
+ return err;
+ }
+ }
+
+ if (counter->own_cpus) {
+ err = perf_event__synthesize_event_update_cpus(tool, counter, process);
+ if (err < 0) {
+ pr_err("Couldn't synthesize evsel cpus.\n");
+ return err;
+ }
+ }
+
+ /*
+ * Name is needed only for pipe output,
+ * perf.data carries event names.
+ */
+ if (is_pipe) {
+ err = perf_event__synthesize_event_update_name(tool, counter, process);
+ if (err < 0) {
+ pr_err("Couldn't synthesize evsel name.\n");
+ return err;
+ }
+ }
+ }
+ return 0;
+}
+
int perf_event__process_attr(struct perf_tool *tool __maybe_unused,
union perf_event *event,
struct perf_evlist **pevlist)
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index 29ccbfdf8724..91befc3b550d 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -107,6 +107,11 @@ int perf_event__synthesize_features(struct perf_tool *tool,
struct perf_evlist *evlist,
perf_event__handler_t process);

+int perf_event__synthesize_extra_attr(struct perf_tool *tool,
+ struct perf_evlist *evsel_list,
+ perf_event__handler_t process,
+ bool is_pipe);
+
int perf_event__process_feature(struct perf_tool *tool,
union perf_event *event,
struct perf_session *session);
--
2.13.6