Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 6ff1ce76 authored by Adrian Hunter's avatar Adrian Hunter Committed by Arnaldo Carvalho de Melo
Browse files

perf evsel: Add 'no_aux_samples' option 



Add an option to prevent additional samples being added to a selected
event by perf_evsel__config().

This is needed when using the sched_switch tracepoint to follow object
code execution.  Since sched_switch will be used only for switch
information, additional sampling is wasteful.

Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1405332185-4050-33-git-send-email-adrian.hunter@intel.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent ea8e08a1

tools/perf/util/evsel.c

+3 −3
Original line number Original line Diff line number Diff line
@@ -623,7 +623,7 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts) 
		attr->mmap_data = track;

		attr->mmap_data = track;

	}

	}





	if (opts->call_graph_enabled)

	if (opts->call_graph_enabled && !evsel->no_aux_samples)

		perf_evsel__config_callgraph(evsel, opts);

		perf_evsel__config_callgraph(evsel, opts);





	if (target__has_cpu(&opts->target))

	if (target__has_cpu(&opts->target))
@@ -637,7 +637,7 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts) 
	     target__has_cpu(&opts->target) || per_cpu))

	     target__has_cpu(&opts->target) || per_cpu))

		perf_evsel__set_sample_bit(evsel, TIME);

		perf_evsel__set_sample_bit(evsel, TIME);





	if (opts->raw_samples) {

	if (opts->raw_samples && !evsel->no_aux_samples) {

		perf_evsel__set_sample_bit(evsel, TIME);

		perf_evsel__set_sample_bit(evsel, TIME);

		perf_evsel__set_sample_bit(evsel, RAW);

		perf_evsel__set_sample_bit(evsel, RAW);

		perf_evsel__set_sample_bit(evsel, CPU);

		perf_evsel__set_sample_bit(evsel, CPU);
@@ -650,7 +650,7 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts) 
		attr->watermark = 0;

		attr->watermark = 0;

		attr->wakeup_events = 1;

		attr->wakeup_events = 1;

	}

	}

	if (opts->branch_stack) {

	if (opts->branch_stack && !evsel->no_aux_samples) {

		perf_evsel__set_sample_bit(evsel, BRANCH_STACK);

		perf_evsel__set_sample_bit(evsel, BRANCH_STACK);

		attr->branch_sample_type = opts->branch_stack;

		attr->branch_sample_type = opts->branch_stack;

	}

	}

tools/perf/util/evsel.h

+1 −0
Original line number Original line Diff line number Diff line
@@ -83,6 +83,7 @@ struct perf_evsel { 
	int			is_pos;

	int			is_pos;

	bool 			supported;

	bool 			supported;

	bool 			needs_swap;

	bool 			needs_swap;

	bool			no_aux_samples;

	/* parse modifier helper */

	/* parse modifier helper */

	int			exclude_GH;

	int			exclude_GH;

	int			nr_members;

	int			nr_members;