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authorDavid Ahern <dsahern@gmail.com>2011-11-21 10:02:52 -0700
committerArnaldo Carvalho de Melo <acme@redhat.com>2011-11-28 11:48:23 -0200
commite7984b7bee2fca8f582f5bc2bf1e6c93420a5dd5 (patch)
treea6983438f7ec42b8f16f8e2f884fae5dcb8b210e
parentc8e6672035e84799e6167e933fafedc8e3256973 (diff)
downloadlinux-e7984b7bee2fca8f582f5bc2bf1e6c93420a5dd5.tar.gz
perf script: Add comm filtering option
Allows collecting events system wide and then pulling out events for a specific task name(s). e.g, perf script -c gnome-shell,gnome-terminal Applies on top of: https://lkml.org/lkml/2011/11/13/74 v2->v3 - update Documentation v1->v2 - use comm_list from symbol_conf Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1321894972-24246-1-git-send-email-dsahern@gmail.com Signed-off-by: David Ahern <dsahern@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-rw-r--r--tools/perf/Documentation/perf-script.txt5
-rw-r--r--tools/perf/builtin-script.c12
2 files changed, 17 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index 3613b0a1aff2..7f61eaaf9ab8 100644
--- a/tools/perf/Documentation/perf-script.txt
+++ b/tools/perf/Documentation/perf-script.txt
@@ -188,6 +188,11 @@ OPTIONS
CPUs are specified with -: 0-2. Default is to report samples on all
CPUs.
+-c::
+--comms=::
+ Only display events for these comms. CSV that understands
+ file://filename entries.
+
-I::
--show-info::
Display extended information about the perf.data file. This adds
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 7731a09e975c..619d6dcaa1d9 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -441,6 +441,7 @@ static int process_sample_event(struct perf_tool *tool __used,
struct perf_evsel *evsel,
struct machine *machine)
{
+ struct addr_location al;
struct thread *thread = machine__findnew_thread(machine, event->ip.pid);
if (thread == NULL) {
@@ -460,6 +461,15 @@ static int process_sample_event(struct perf_tool *tool __used,
return 0;
}
+ if (perf_event__preprocess_sample(event, machine, &al, sample, 0) < 0) {
+ pr_err("problem processing %d event, skipping it.\n",
+ event->header.type);
+ return -1;
+ }
+
+ if (al.filtered)
+ return 0;
+
if (cpu_list && !test_bit(sample->cpu, cpu_bitmap))
return 0;
@@ -1086,6 +1096,8 @@ static const struct option options[] = {
"comma separated output fields prepend with 'type:'. Valid types: hw,sw,trace,raw. Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,addr",
parse_output_fields),
OPT_STRING('C', "cpu", &cpu_list, "cpu", "list of cpus to profile"),
+ OPT_STRING('c', "comms", &symbol_conf.comm_list_str, "comm[,comm...]",
+ "only display events for these comms"),
OPT_BOOLEAN('I', "show-info", &show_full_info,
"display extended information from perf.data file"),
OPT_END()