From 43adec955edd116c3e98c6e2f85fbd63281f5221 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 15 Mar 2011 11:04:13 -0300 Subject: [PATCH] perf evlist: New command to list the names of events present in a perf.data file [root@emilia ~]# perf record -a -e sched:* -e timer:timer* sleep 5 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.172 MB perf.data (~7530 samples) ] [root@emilia ~]# perf evlist sched:sched_kthread_stop sched:sched_kthread_stop_ret sched:sched_wakeup sched:sched_wakeup_new sched:sched_switch sched:sched_migrate_task sched:sched_process_free sched:sched_process_exit sched:sched_wait_task sched:sched_process_wait sched:sched_process_fork sched:sched_stat_wait sched:sched_stat_sleep sched:sched_stat_iowait sched:sched_stat_runtime sched:sched_pi_setprio timer:timer_init timer:timer_start timer:timer_expire_entry timer:timer_expire_exit timer:timer_cancel [root@emilia ~]# Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Tom Zanussi LKML-Reference: Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-evlist.txt | 26 ++++++++++++ tools/perf/Makefile | 1 + tools/perf/builtin-evlist.c | 54 ++++++++++++++++++++++++ tools/perf/builtin.h | 1 + tools/perf/command-list.txt | 1 + tools/perf/perf.c | 1 + 6 files changed, 84 insertions(+) create mode 100644 tools/perf/Documentation/perf-evlist.txt create mode 100644 tools/perf/builtin-evlist.c diff --git a/tools/perf/Documentation/perf-evlist.txt b/tools/perf/Documentation/perf-evlist.txt new file mode 100644 index 000000000000..0cada9e053dc --- /dev/null +++ b/tools/perf/Documentation/perf-evlist.txt @@ -0,0 +1,26 @@ +perf-evlist(1) +============== + +NAME +---- +perf-evlist - List the event names in a perf.data file + +SYNOPSIS +-------- +[verse] +'perf evlist ' + +DESCRIPTION +----------- +This command displays the names of events sampled in a perf.data file. + +OPTIONS +------- +-i:: +--input=:: + Input file name. (default: perf.data) + +SEE ALSO +-------- +linkperf:perf-record[1], linkperf:perf-list[1], +linkperf:perf-report[1] diff --git a/tools/perf/Makefile b/tools/perf/Makefile index 9b8421805c5c..158c30e8210c 100644 --- a/tools/perf/Makefile +++ b/tools/perf/Makefile @@ -338,6 +338,7 @@ endif BUILTIN_OBJS += $(OUTPUT)bench/mem-memcpy.o BUILTIN_OBJS += $(OUTPUT)builtin-diff.o +BUILTIN_OBJS += $(OUTPUT)builtin-evlist.o BUILTIN_OBJS += $(OUTPUT)builtin-help.o BUILTIN_OBJS += $(OUTPUT)builtin-sched.o BUILTIN_OBJS += $(OUTPUT)builtin-buildid-list.o diff --git a/tools/perf/builtin-evlist.c b/tools/perf/builtin-evlist.c new file mode 100644 index 000000000000..4c5e9e04a41f --- /dev/null +++ b/tools/perf/builtin-evlist.c @@ -0,0 +1,54 @@ +/* + * Builtin evlist command: Show the list of event selectors present + * in a perf.data file. + */ +#include "builtin.h" + +#include "util/util.h" + +#include + +#include "perf.h" +#include "util/evlist.h" +#include "util/evsel.h" +#include "util/parse-events.h" +#include "util/parse-options.h" +#include "util/session.h" + +static char const *input_name = "perf.data"; + +static int __cmd_evlist(void) +{ + struct perf_session *session; + struct perf_evsel *pos; + + session = perf_session__new(input_name, O_RDONLY, 0, false, NULL); + if (session == NULL) + return -ENOMEM; + + list_for_each_entry(pos, &session->evlist->entries, node) + printf("%s\n", event_name(pos)); + + perf_session__delete(session); + return 0; +} + +static const char * const evlist_usage[] = { + "perf evlist []", + NULL +}; + +static const struct option options[] = { + OPT_STRING('i', "input", &input_name, "file", + "input file name"), + OPT_END() +}; + +int cmd_evlist(int argc, const char **argv, const char *prefix __used) +{ + argc = parse_options(argc, argv, options, evlist_usage, 0); + if (argc) + usage_with_options(evlist_usage, options); + + return __cmd_evlist(); +} diff --git a/tools/perf/builtin.h b/tools/perf/builtin.h index c7798c7f24ed..4702e2443a8e 100644 --- a/tools/perf/builtin.h +++ b/tools/perf/builtin.h @@ -19,6 +19,7 @@ extern int cmd_bench(int argc, const char **argv, const char *prefix); extern int cmd_buildid_cache(int argc, const char **argv, const char *prefix); extern int cmd_buildid_list(int argc, const char **argv, const char *prefix); extern int cmd_diff(int argc, const char **argv, const char *prefix); +extern int cmd_evlist(int argc, const char **argv, const char *prefix); extern int cmd_help(int argc, const char **argv, const char *prefix); extern int cmd_sched(int argc, const char **argv, const char *prefix); extern int cmd_list(int argc, const char **argv, const char *prefix); diff --git a/tools/perf/command-list.txt b/tools/perf/command-list.txt index 16b5088cf8f4..d695fe40fbff 100644 --- a/tools/perf/command-list.txt +++ b/tools/perf/command-list.txt @@ -8,6 +8,7 @@ perf-bench mainporcelain common perf-buildid-cache mainporcelain common perf-buildid-list mainporcelain common perf-diff mainporcelain common +perf-evlist mainporcelain common perf-inject mainporcelain common perf-list mainporcelain common perf-sched mainporcelain common diff --git a/tools/perf/perf.c b/tools/perf/perf.c index 595d0f4a7103..ec635b7cc8ea 100644 --- a/tools/perf/perf.c +++ b/tools/perf/perf.c @@ -313,6 +313,7 @@ static void handle_internal_command(int argc, const char **argv) { "buildid-cache", cmd_buildid_cache, 0 }, { "buildid-list", cmd_buildid_list, 0 }, { "diff", cmd_diff, 0 }, + { "evlist", cmd_evlist, 0 }, { "help", cmd_help, 0 }, { "list", cmd_list, 0 }, { "record", cmd_record, 0 }, -- 2.20.1