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-hdd2u0y1o8cwfpplrpzc1...@git.kernel.org Signed-off-by: Jiri Olsa <jo...@kernel.org> --- 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
