Messages in this thread | | | Subject | Re: [PATCH] perf stat: Support --all-kernel/--all-user | From | "Jin, Yao" <> | Date | Tue, 15 Oct 2019 09:57:33 +0800 |
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On 10/15/2019 12:23 AM, Arnaldo Carvalho de Melo wrote: > Em Mon, Oct 14, 2019 at 04:42:08PM +0200, Jiri Olsa escreveu: >> 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@linux.intel.com> >> >> Acked-by: Jiri Olsa <jolsa@kernel.org> > > What happens if one asks for both? From the patch only the --all-kernel > will stick, right? Is that the behaviour for 'perf record'? Lemme see, > as I recall having this discussion at that time... > > Yeah, same thing, and looking at that I wonder why we dong use > perf_evsel__config() in 'perf stat'... > > Ok, I'm going to apply it. >
Hi Arnaldo,
If we specify both, we will see the error.
root@kbl:~# perf stat --all-kernel --all-user -a -- sleep 1 Error: option `all-user' cannot be used with all-kernel
root@kbl:~# perf record --all-kernel --all-user -a -- sleep 1 Error: option `all-user' cannot be used with all-kernel
For why I don't set them in perf_evsel__config, because perf_evsel__config is called in record but not called in stat.
Thanks for reviewing and applying this patch.
Thanks Jin Yao
>> 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 >>> >
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