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perf stat: Support --cputype option for hybrid events

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In previous patch, we have supported the syntax which enables
the event on a specified pmu, such as:

cpu_core/<event>/
cpu_atom/<event>/

While this syntax is not very easy for applying on a set of
events or applying on a group. In following example, we have to
explicitly assign the pmu prefix.

  # ./perf stat -e '{cpu_core/cycles/,cpu_core/instructions/}' -- sleep 1

   Performance counter stats for 'sleep 1':

           1,158,545      cpu_core/cycles/
           1,003,113      cpu_core/instructions/

         1.002428712 seconds time elapsed

A much easier way is:

  # ./perf stat --cputype core -e '{cycles,instructions}' -- sleep 1

   Performance counter stats for 'sleep 1':

           1,101,071      cpu_core/cycles/
             939,892      cpu_core/instructions/

         1.002363142 seconds time elapsed

For this example, the '--cputype' enables the events from specified
pmu (cpu_core).

If '--cputype' conflicts with pmu prefix, '--cputype' is ignored.

  # ./perf stat --cputype core -e cycles,cpu_atom/instructions/ -a -- sleep 1

   Performance counter stats for 'system wide':

          21,003,407      cpu_core/cycles/
             367,886      cpu_atom/instructions/

         1.002203520 seconds time elapsed

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20210909062215.10278-1-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jin Yao 2021-09-09 14:22:15 +08:00 • committed by Arnaldo Carvalho de Melo
parent ed17b19149
commit e69dc84282
4 changed files with 35 additions and 3 deletions
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24
tools/perf/builtin-stat.c
View file

@ -1168,6 +1168,26 @@ static int parse_stat_cgroups(const struct option *opt,
return parse_cgroups(opt, str, unset);
}
static int parse_hybrid_type(const struct option *opt,
const char *str,
int unset __maybe_unused)
{
struct evlist *evlist = *(struct evlist **)opt->value;
if (!list_empty(&evlist->core.entries)) {
fprintf(stderr, "Must define cputype before events/metrics\n");
return -1;
}
evlist->hybrid_pmu_name = perf_pmu__hybrid_type_to_pmu(str);
if (!evlist->hybrid_pmu_name) {
fprintf(stderr, "--cputype %s is not supported!\n", str);
return -1;
}
return 0;
}
static struct option stat_options[] = {
OPT_BOOLEAN('T', "transaction", &transaction_run,
"hardware transaction statistics"),
@ -1282,6 +1302,10 @@ static struct option stat_options[] = {
"don't print 'summary' for CSV summary output"),
OPT_BOOLEAN(0, "quiet", &stat_config.quiet,
"don't print output (useful with record)"),
OPT_CALLBACK(0, "cputype", &evsel_list, "hybrid cpu type",
"Only enable events on applying cpu with this type "
"for hybrid platform (e.g. core or atom)",
parse_hybrid_type),
#ifdef HAVE_LIBPFM
OPT_CALLBACK(0, "pfm-events", &evsel_list, "event",
"libpfm4 event selector. use 'perf list' to list available events",