linux-kernel - Re: [PATCH] perf stat: Support --all-kernel/--all-user

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Date:   Mon, 14 Oct 2019 16:42:08 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     Jin Yao <yao.jin@...ux.intel.com>
Cc:     acme@...nel.org, jolsa@...nel.org, peterz@...radead.org,
        mingo@...hat.com, alexander.shishkin@...ux.intel.com,
        Linux-kernel@...r.kernel.org, ak@...ux.intel.com,
        kan.liang@...el.com, yao.jin@...el.com
Subject: Re: [PATCH] perf stat: Support --all-kernel/--all-user

On Fri, Oct 11, 2019 at 01:05:45PM +0800, Jin Yao wrote:
> 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.
> 
> Signed-off-by: Jin Yao <yao.jin@...ux.intel.com>

Acked-by: Jiri Olsa <jolsa@...nel.org>

thanks,
jirka

> ---
>  tools/perf/Documentation/perf-stat.txt |  6 ++++++
>  tools/perf/builtin-stat.c              |  6 ++++++
>  tools/perf/util/stat.c                 | 10 ++++++++++
>  tools/perf/util/stat.h                 |  2 ++
>  4 files changed, 24 insertions(+)
> 
> diff --git a/tools/perf/Documentation/perf-stat.txt b/tools/perf/Documentation/perf-stat.txt
> index 930c51c01201..a9af4e440e80 100644
> --- a/tools/perf/Documentation/perf-stat.txt
> +++ b/tools/perf/Documentation/perf-stat.txt
> @@ -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
>  --------
>  
> diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
> index 468fc49420ce..c88d4e118409 100644
> --- a/tools/perf/builtin-stat.c
> +++ b/tools/perf/builtin-stat.c
> @@ -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()
>  };
>  
> diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c
> index ebdd130557fb..6822e4ffe224 100644
> --- a/tools/perf/util/stat.c
> +++ b/tools/perf/util/stat.c
> @@ -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
> diff --git a/tools/perf/util/stat.h b/tools/perf/util/stat.h
> index edbeb2f63e8d..081c4a5113c6 100644
> --- a/tools/perf/util/stat.h
> +++ b/tools/perf/util/stat.h
> @@ -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;
> -- 
> 2.17.1
>