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authorJiri Olsa <jolsa@kernel.org>2020-12-27 02:20:36 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2021-01-20 20:34:21 +0300
commit142544a938f436a6567a88d307346bfe198465b0 (patch)
tree90ef352294402a0999476a52f1e755316dfb7875 /tools/perf/builtin-stat.c
parent991ae4eb36911fe9a99bef1c22b9578ceec3896a (diff)
downloadlinux-142544a938f436a6567a88d307346bfe198465b0.tar.xz
perf tools: Add 'evlist' control command
Add a new 'evlist' control command to display all the evlist events. When it is received, perf will scan and print current evlist into perf record terminal. The interface string for control file is: evlist [-v|-g|-F] The syntax follows perf evlist command: -F Show just the sample frequency used for each event. -v Show all fields. -g Show event group information. Example session: terminal 1: # mkfifo control ack # perf record --control=fifo:control,ack -e '{cycles,instructions}' terminal 2: # echo evlist > control terminal 1: cycles instructions dummy:HG terminal 2: # echo 'evlist -v' > control terminal 1: cycles: size: 120, { sample_period, sample_freq }: 4000, sample_type: \ IP|TID|TIME|ID|CPU|PERIOD, read_format: ID, disabled: 1, inherit: 1, freq: 1, \ sample_id_all: 1, exclude_guest: 1 instructions: size: 120, config: 0x1, { sample_period, sample_freq }: 4000, \ sample_type: IP|TID|TIME|ID|CPU|PERIOD, read_format: ID, inherit: 1, freq: 1, \ sample_id_all: 1, exclude_guest: 1 dummy:HG: type: 1, size: 120, config: 0x9, { sample_period, sample_freq }: 4000, \ sample_type: IP|TID|TIME|ID|CPU|PERIOD, read_format: ID, inherit: 1, mmap: 1, \ comm: 1, freq: 1, task: 1, sample_id_all: 1, mmap2: 1, comm_exec: 1, ksymbol: 1, \ bpf_event: 1 terminal 2: # echo 'evlist -g' > control terminal 1: {cycles,instructions} dummy:HG terminal 2: # echo 'evlist -F' > control terminal 1: cycles: sample_freq=4000 instructions: sample_freq=4000 dummy:HG: sample_freq=4000 This new evlist command is handy to get real event names when wildcards are used. Adding evsel_fprintf.c object to python/perf.so build, because it's now evlist.c dependency. Adding PYTHON_PERF define for python/perf.so compilation, so we can use it to compile in only evsel__fprintf from evsel_fprintf.c object. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexei Budankov <abudankov@huawei.com> Cc: Ian Rogers <irogers@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20201226232038.390883-3-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-stat.c')
-rw-r--r--tools/perf/builtin-stat.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 3ec12366bdd4..fc535e2df857 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -621,6 +621,7 @@ static void process_evlist(struct evlist *evlist, unsigned int interval)
case EVLIST_CTL_CMD_SNAPSHOT:
case EVLIST_CTL_CMD_ACK:
case EVLIST_CTL_CMD_UNSUPPORTED:
+ case EVLIST_CTL_CMD_EVLIST:
default:
break;
}