Commit dd071024 authored by Jin Yao's avatar Jin Yao Committed by Arnaldo Carvalho de Melo
Browse files

perf stat: Support --all-kernel/--all-user 



'perf record' has supported --all-kernel / --all-user to configure all
used events to run in kernel space or run in user space. But 'perf stat'
doesn't support these options.

It would be useful to support these options in 'perf stat' too to keep
the same semantics available in both tools.

Signed-off-by: default avatarJin Yao <yao.jin@linux.intel.com>
Acked-by: default avatarJiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20191011050545.3899-1-yao.jin@linux.intel.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 5fb470bc

tools/perf/Documentation/perf-stat.txt

+6 −0
Original line number Diff line number Diff line
@@ -323,6 +323,12 @@ The output is SMI cycles%, equals to (aperf - unhalted core cycles) / aperf 


Users who wants to get the actual value can apply --no-metric-only.



--all-kernel::

Configure all used events to run in kernel space.



--all-user::

Configure all used events to run in user space.



EXAMPLES

--------

tools/perf/builtin-stat.c

+6 −0
Original line number Diff line number Diff line
@@ -803,6 +803,12 @@ static struct option stat_options[] = { 
	OPT_CALLBACK('M', "metrics", &evsel_list, "metric/metric group list",

		     "monitor specified metrics or metric groups (separated by ,)",

		     parse_metric_groups),

	OPT_BOOLEAN_FLAG(0, "all-kernel", &stat_config.all_kernel,

			 "Configure all used events to run in kernel space.",

			 PARSE_OPT_EXCLUSIVE),

	OPT_BOOLEAN_FLAG(0, "all-user", &stat_config.all_user,

			 "Configure all used events to run in user space.",

			 PARSE_OPT_EXCLUSIVE),

	OPT_END()

};

tools/perf/util/stat.c

+10 −0
Original line number Diff line number Diff line
@@ -490,6 +490,16 @@ int create_perf_stat_counter(struct evsel *evsel, 
	if (config->identifier)

		attr->sample_type = PERF_SAMPLE_IDENTIFIER;



	if (config->all_user) {

		attr->exclude_kernel = 1;

		attr->exclude_user   = 0;

	}



	if (config->all_kernel) {

		attr->exclude_kernel = 0;

		attr->exclude_user   = 1;

	}



	/*

	 * Disabling all counters initially, they will be enabled

	 * either manually by us or by kernel via enable_on_exec

tools/perf/util/stat.h

+2 −0
Original line number Diff line number Diff line
@@ -106,6 +106,8 @@ struct perf_stat_config { 
	bool			 big_num;

	bool			 no_merge;

	bool			 walltime_run_table;

	bool			 all_kernel;

	bool			 all_user;

	FILE			*output;

	unsigned int		 interval;

	unsigned int		 timeout;

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