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Commit ba6039b6 authored by Jiri Olsa's avatar Jiri Olsa Committed by Arnaldo Carvalho de Melo
Browse files

perf stat report: Add report command 



Adding 'perf stat report' command support. ATM it only processes attr
events and display nothing.

Reported-by: default avatarKan Liang <kan.liang@intel.com>
Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-12-git-send-email-jolsa@kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 7b60a7e3

tools/perf/Documentation/perf-stat.txt

+12 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ SYNOPSIS 
'perf stat' [-e <EVENT> | --event=EVENT] [-a] <command>

'perf stat' [-e <EVENT> | --event=EVENT] [-a] -- <command> [<options>]

'perf stat' [-e <EVENT> | --event=EVENT] [-a] record [-o file] -- <command> [<options>]

'perf stat' report [-i file]



DESCRIPTION

-----------
@@ -26,6 +27,9 @@ OPTIONS 
record::

	See STAT RECORD.



report::

	See STAT REPORT.



-e::

--event=::

	Select the PMU event. Selection can be:
@@ -170,6 +174,14 @@ Stores stat data into perf data file. 
--output file::

Output file name.



STAT REPORT

-----------

Reads and reports stat data from perf data file.



-i file::

--input file::

Input file name.





EXAMPLES

--------

tools/perf/builtin-stat.c

+57 −4
Original line number Diff line number Diff line
@@ -60,6 +60,8 @@ 
#include "util/thread_map.h"

#include "util/counts.h"

#include "util/session.h"

#include "util/tool.h"

#include "asm/bug.h"



#include <stdlib.h>

#include <sys/prctl.h>
@@ -132,6 +134,7 @@ struct perf_stat { 
	struct perf_data_file	 file;

	struct perf_session	*session;

	u64			 bytes_written;

	struct perf_tool	 tool;

};



static struct perf_stat		perf_stat;
@@ -1041,8 +1044,8 @@ static void print_header(int argc, const char **argv) 
		else if (target.cpu_list)

			fprintf(output, "\'CPU(s) %s", target.cpu_list);

		else if (!target__has_task(&target)) {

			fprintf(output, "\'%s", argv[0]);

			for (i = 1; i < argc; i++)

			fprintf(output, "\'%s", argv ? argv[0] : "pipe");

			for (i = 1; argv && (i < argc); i++)

				fprintf(output, " %s", argv[i]);

		} else if (target.pid)

			fprintf(output, "process id \'%s", target.pid);
@@ -1527,6 +1530,55 @@ static int __cmd_record(int argc, const char **argv) 
	return argc;

}



static const char * const report_usage[] = {

	"perf stat report [<options>]",

	NULL,

};



static struct perf_stat perf_stat = {

	.tool = {

		.attr		= perf_event__process_attr,

	},

};



static int __cmd_report(int argc, const char **argv)

{

	struct perf_session *session;

	const struct option options[] = {

	OPT_STRING('i', "input", &input_name, "file", "input file name"),

	OPT_END()

	};

	struct stat st;

	int ret;



	argc = parse_options(argc, argv, options, report_usage, 0);



	if (!input_name || !strlen(input_name)) {

		if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))

			input_name = "-";

		else

			input_name = "perf.data";

	}



	perf_stat.file.path = input_name;

	perf_stat.file.mode = PERF_DATA_MODE_READ;



	session = perf_session__new(&perf_stat.file, false, &perf_stat.tool);

	if (session == NULL)

		return -1;



	perf_stat.session  = session;

	stat_config.output = stderr;

	evsel_list         = session->evlist;



	ret = perf_session__process_events(session);

	if (ret)

		return ret;



	perf_session__delete(session);

	return 0;

}



int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused)

{

	const char * const stat_usage[] = {
@@ -1537,7 +1589,7 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused) 
	const char *mode;

	FILE *output = stderr;

	unsigned int interval;

	const char * const stat_subcommands[] = { "record" };

	const char * const stat_subcommands[] = { "record", "report" };



	setlocale(LC_ALL, "");
@@ -1553,7 +1605,8 @@ int cmd_stat(int argc, const char **argv, const char *prefix __maybe_unused) 
		argc = __cmd_record(argc, argv);

		if (argc < 0)

			return -1;

	}

	} else if (argc && !strncmp(argv[0], "rep", 3))

		return __cmd_report(argc, argv);



	interval = stat_config.interval;