linux-kernel - Re: [PATCH 2/6] perf mem: Add -U/-K (--all-user/--all-kernel) options

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Message-ID: <20160324155825.GB32162@kernel.org>
Date:	Thu, 24 Mar 2016 12:58:25 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Jiri Olsa <jolsa@...nel.org>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Stephane Eranian <eranian@...gle.com>,
	Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 2/6] perf mem: Add -U/-K (--all-user/--all-kernel) options

Em Thu, Mar 24, 2016 at 01:52:16PM +0100, Jiri Olsa escreveu:
> Add -U/-K (--all-user/--all-kernel) options to use
> the perf record --all-user/--all-kernel options.

Applying this after fixing up the clash due to the first patch not being
merged so far.
 
> Link: http://lkml.kernel.org/n/tip-adxn5c48oe0gmjrjmq6we27q@git.kernel.org
> Signed-off-by: Jiri Olsa <jolsa@...nel.org>
> ---
>  tools/perf/Documentation/perf-mem.txt |  8 ++++++++
>  tools/perf/builtin-mem.c              | 11 ++++++++++-
>  2 files changed, 18 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/perf/Documentation/perf-mem.txt b/tools/perf/Documentation/perf-mem.txt
> index 6676d2784733..f8e23f50ce59 100644
> --- a/tools/perf/Documentation/perf-mem.txt
> +++ b/tools/perf/Documentation/perf-mem.txt
> @@ -51,6 +51,14 @@ OPTIONS
>  --ldload::
>  	Specify desired latency for loads event.
>  
> +-K::
> +--all-kernel::
> +	Configure all used events to run in kernel space.
> +
> +-U::
> +--all-user::
> +	Configure all used events to run in user space.
> +
>  SEE ALSO
>  --------
>  linkperf:perf-record[1], linkperf:perf-report[1]
> diff --git a/tools/perf/builtin-mem.c b/tools/perf/builtin-mem.c
> index bf0bfca5be20..5dad76e1c8df 100644
> --- a/tools/perf/builtin-mem.c
> +++ b/tools/perf/builtin-mem.c
> @@ -62,6 +62,7 @@ static int __cmd_record(int argc, const char **argv, struct perf_mem *mem)
>  	int rec_argc, i = 0, j;
>  	const char **rec_argv;
>  	int ret;
> +	bool all_user = false, all_kernel = false;
>  	struct option options[] = {
>  	OPT_CALLBACK('e', "event", &mem, "event",
>  		     "event selector. use 'perf mem record -e list' to list available events",
> @@ -69,13 +70,15 @@ static int __cmd_record(int argc, const char **argv, struct perf_mem *mem)
>  	OPT_UINTEGER(0, "ldlat", &perf_mem_events__loads_ldlat, "mem-loads latency"),
>  	OPT_INCR('v', "verbose", &verbose,
>  		 "be more verbose (show counter open errors, etc)"),
> +	OPT_BOOLEAN('U', "--all-user", &all_user, "collect only user level data"),
> +	OPT_BOOLEAN('K', "--all-kernel", &all_kernel, "collect only kernel level data"),
>  	OPT_END()
>  	};
>  
>  	argc = parse_options(argc, argv, options, record_mem_usage,
>  			     PARSE_OPT_STOP_AT_NON_OPTION);
>  
> -	rec_argc = argc + 7; /* max number of arguments */
> +	rec_argc = argc + 9; /* max number of arguments */
>  	rec_argv = calloc(rec_argc + 1, sizeof(char *));
>  	if (!rec_argv)
>  		return -1;
> @@ -104,6 +107,12 @@ static int __cmd_record(int argc, const char **argv, struct perf_mem *mem)
>  		rec_argv[i++] = perf_mem_events__name(j);
>  	};
>  
> +	if (all_user)
> +		rec_argv[i++] = "--all-user";
> +
> +	if (all_kernel)
> +		rec_argv[i++] = "--all-kernel";
> +
>  	for (j = 0; j < argc; j++, i++)
>  		rec_argv[i] = argv[j];
>  
> -- 
> 2.4.3