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perf stat report: Allow to override aggr_mode 

Allowing to override record aggr_mode. It's possible to use perf stat
like:

   $ perf stat report -A
   $ perf stat report --per-core
   $ perf stat report --per-socket

To customize the recorded aggregate mode regardless what was used during
the stat record command.

Reported-by: Kan Liang <kan.liang@intel.com>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-19-git-send-email-jolsa@kernel.org
[ Renamed 'stat' parameter to 'st' to fix 'already defined' build error with older distros (e.g. RHEL6.7) ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2015-11-05 15:41:02 +01:00 committed by Arnaldo Carvalho de Melo
parent fa6ea7817d
commit 89af4e05c2
2 changed files with 27 additions and 0 deletions
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10
tools/perf/Documentation/perf-stat.txt
View File

@ -182,6 +182,16 @@ Reads and reports stat data from perf data file.
--input file::
Input file name.
--per-socket::
Aggregate counts per processor socket for system-wide mode measurements.
--per-core::
Aggregate counts per physical processor for system-wide mode measurements.
-A::
--no-aggr::
Do not aggregate counts across all monitored CPUs.
EXAMPLES
--------

17
tools/perf/builtin-stat.c
View File

@ -138,6 +138,7 @@ struct perf_stat {
bool maps_allocated;
struct cpu_map *cpus;
struct thread_map *threads;
enum aggr_mode aggr_mode;
};
static struct perf_stat perf_stat;
@ -1663,6 +1664,15 @@ int process_stat_config_event(struct perf_tool *tool __maybe_unused,
perf_event__read_stat_config(&stat_config, &event->stat_config);
if (cpu_map__empty(st->cpus)) {
if (st->aggr_mode != AGGR_UNSET)
pr_warning("warning: processing task data, aggregation mode not set\n");
return 0;
}
if (st->aggr_mode != AGGR_UNSET)
stat_config.aggr_mode = st->aggr_mode;
if (perf_stat.file.is_pipe)
perf_stat_init_aggr_mode();
else
@ -1743,6 +1753,7 @@ static struct perf_stat perf_stat = {
.stat = perf_event__process_stat_event,
.stat_round = process_stat_round_event,
},
.aggr_mode = AGGR_UNSET,
};
static int __cmd_report(int argc, const char **argv)
@ -1750,6 +1761,12 @@ static int __cmd_report(int argc, const char **argv)
struct perf_session *session;
const struct option options[] = {
OPT_STRING('i', "input", &input_name, "file", "input file name"),
OPT_SET_UINT(0, "per-socket", &perf_stat.aggr_mode,
"aggregate counts per processor socket", AGGR_SOCKET),
OPT_SET_UINT(0, "per-core", &perf_stat.aggr_mode,
"aggregate counts per physical processor core", AGGR_CORE),
OPT_SET_UINT('A', "no-aggr", &perf_stat.aggr_mode,
"disable CPU count aggregation", AGGR_NONE),
OPT_END()
};
struct stat st;