[PATCH 01/23] perf record: Add --all-user/--all-kernel options

From: Jiri Olsa
Date: Mon Feb 15 2016 - 03:35:11 EST


Allow user to easily switch all events to user or
kernel space with simple --all-user or --all-kernel
options.

This will be handy within perf mem/c2c wrappers to
switch easily monitoring modes.

Link: http://lkml.kernel.org/n/tip-hdd2u0y1o8cwfpplrpzc1iqd@xxxxxxxxxxxxxx
Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
---
tools/perf/Documentation/perf-record.txt | 6 ++++++
tools/perf/builtin-record.c | 4 ++++
tools/perf/perf.h | 2 ++
tools/perf/util/evsel.c | 10 ++++++++++
4 files changed, 22 insertions(+)

diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt
index fbceb631387c..19aa17532a16 100644
--- a/tools/perf/Documentation/perf-record.txt
+++ b/tools/perf/Documentation/perf-record.txt
@@ -341,6 +341,12 @@ Specify vmlinux path which has debuginfo.
--buildid-all::
Record build-id of all DSOs regardless whether it's actually hit or not.

+--all-kernel::
+Configure all used events to run in kernel space.
+
+--all-user::
+Configure all used events to run in user space.
+
SEE ALSO
--------
linkperf:perf-stat[1], linkperf:perf-list[1]
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index caa8235ed027..b64f31a4c993 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -1151,6 +1151,10 @@ struct option __record_options[] = {
"per thread proc mmap processing timeout in ms"),
OPT_BOOLEAN(0, "switch-events", &record.opts.record_switch_events,
"Record context switch events"),
+ OPT_BOOLEAN(0, "all-kernel", &record.opts.all_kernel,
+ "Configure all used events to run in kernel space."),
+ OPT_BOOLEAN(0, "all-user", &record.opts.all_user,
+ "Configure all used events to run in user space."),
OPT_STRING(0, "clang-path", &llvm_param.clang_path, "clang path",
"clang binary to use for compiling BPF scriptlets"),
OPT_STRING(0, "clang-opt", &llvm_param.clang_opt, "clang options",
diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index 90129accffbe..5381a01c0610 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -58,6 +58,8 @@ struct record_opts {
bool full_auxtrace;
bool auxtrace_snapshot_mode;
bool record_switch_events;
+ bool all_kernel;
+ bool all_user;
unsigned int freq;
unsigned int mmap_pages;
unsigned int auxtrace_mmap_pages;
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 467808680ee4..6ae20d0056de 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -898,6 +898,16 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts)
if (evsel->precise_max)
perf_event_attr__set_max_precise_ip(attr);

+ if (opts->all_user) {
+ attr->exclude_kernel = 1;
+ attr->exclude_user = 0;
+ }
+
+ if (opts->all_kernel) {
+ attr->exclude_kernel = 0;
+ attr->exclude_user = 1;
+ }
+
/*
* Apply event specific term settings,
* it overloads any global configuration.
--
2.4.3