[tip: perf/core] perf stat: Support --all-kernel/--all-user

[tip-bot2 for Jin Yao]

The following commit has been merged into the perf/core branch of tip:

Commit-ID:     dd071024bf52156eed31deaf511c6e7a82a6f57b
Gitweb:        https://git.kernel.org/tip/dd071024bf52156eed31deaf511c6e7a82a6f57b
Author:        Jin Yao <yao.jin@xxxxxxxxxxxxxxx>
AuthorDate:    Fri, 11 Oct 2019 13:05:45 +08:00
Committer:     Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitterDate: Tue, 15 Oct 2019 08:39:42 -03:00

perf stat: Support --all-kernel/--all-user

'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 available in both tools.

Signed-off-by: Jin Yao <yao.jin@xxxxxxxxxxxxxxx>
Acked-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Cc: Kan Liang <kan.liang@xxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Link: http://lore.kernel.org/lkml/20191011050545.3899-1-yao.jin@xxxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 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 930c51c..a9af4e4 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 468fc49..c88d4e1 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 ebdd130..6822e4f 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 edbeb2f..081c4a5 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;