Commit 71184c6a authored by Song Liu's avatar Song Liu Committed by Arnaldo Carvalho de Melo
Browse files

perf record: Replace option --bpf-event with --no-bpf-event 



Currently, monitoring of BPF programs through bpf_event is off by
default for 'perf record'.

To turn it on, the user need to use option "--bpf-event".  As BPF gets
wider adoption in different subsystems, this option becomes
inconvenient.

This patch makes bpf_event on by default, and adds option "--no-bpf-event"
to turn it off. Since option --bpf-event is not released yet, it is safe
to remove it.

Signed-off-by: default avatarSong Liu <songliubraving@fb.com>
Reviewed-by: default avatarJiri Olsa <jolsa@kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: kernel-team@fb.com
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stanislav Fomichev <sdf@google.com>
Link: http://lkml.kernel.org/r/20190312053051.2690567-2-songliubraving@fb.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent d982b331

tools/perf/builtin-record.c

+1 −1
Original line number Diff line number Diff line
@@ -1891,7 +1891,7 @@ static struct option __record_options[] = { 
	OPT_BOOLEAN(0, "tail-synthesize", &record.opts.tail_synthesize,

		    "synthesize non-sample events at the end of output"),

	OPT_BOOLEAN(0, "overwrite", &record.opts.overwrite, "use overwrite mode"),

	OPT_BOOLEAN(0, "bpf-event", &record.opts.bpf_event, "record bpf events"),

	OPT_BOOLEAN(0, "no-bpf-event", &record.opts.no_bpf_event, "record bpf events"),

	OPT_BOOLEAN(0, "strict-freq", &record.opts.strict_freq,

		    "Fail if the specified frequency can't be used"),

	OPT_CALLBACK('F', "freq", &record.opts, "freq or 'max'",

tools/perf/perf.h

+1 −1
Original line number Diff line number Diff line
@@ -66,7 +66,7 @@ struct record_opts { 
	bool	     ignore_missing_thread;

	bool	     strict_freq;

	bool	     sample_id;

	bool	     bpf_event;

	bool	     no_bpf_event;

	unsigned int freq;

	unsigned int mmap_pages;

	unsigned int auxtrace_mmap_pages;

tools/perf/util/bpf-event.c

+1 −1
Original line number Diff line number Diff line
@@ -187,7 +187,7 @@ static int perf_event__synthesize_one_bpf_prog(struct perf_tool *tool, 
	}



	/* Synthesize PERF_RECORD_BPF_EVENT */

	if (opts->bpf_event) {

	if (!opts->no_bpf_event) {

		*bpf_event = (struct bpf_event){

			.header = {

				.type = PERF_RECORD_BPF_EVENT,

tools/perf/util/evsel.c

+1 −1
Original line number Diff line number Diff line
@@ -1036,7 +1036,7 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts, 
	attr->mmap2 = track && !perf_missing_features.mmap2;

	attr->comm  = track;

	attr->ksymbol = track && !perf_missing_features.ksymbol;

	attr->bpf_event = track && opts->bpf_event &&

	attr->bpf_event = track && !opts->no_bpf_event &&

		!perf_missing_features.bpf_event;



	if (opts->record_namespaces)

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