Commit 5ef803ee authored by Yunlong Song's avatar Yunlong Song Committed by Arnaldo Carvalho de Melo
Browse files

perf list: Extend raw-dump to certain kind of events 



Extend 'perf list --raw-dump' to 'perf list --raw-dump [hw|sw|cache
|tracepoint|pmu|event_glob]' in order to show the raw-dump of a certain
kind of events rather than all of the events.

Example:

Before this patch:

 $ perf list --raw-dump hw
 branch-instructions branch-misses bus-cycles cache-misses
 cache-references cpu-cycles instructions stalled-cycles-backend
 stalled-cycles-frontend
 alignment-faults context-switches cpu-clock cpu-migrations
 emulation-faults major-faults minor-faults page-faults task-clock
 ...
 ...
 writeback:writeback_thread_start writeback:writeback_thread_stop
 writeback:writeback_wait_iff_congested
 writeback:writeback_wake_background writeback:writeback_wake_thread

As shown above, all of the events are printed.

After this patch:

 $ perf list --raw-dump hw
 branch-instructions branch-misses bus-cycles cache-misses
 cache-references cpu-cycles instructions stalled-cycles-backend
 stalled-cycles-frontend

As shown above, only the hw events are printed.

Signed-off-by: default avatarYunlong Song <yunlong.song@huawei.com>
Tested-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1425032491-20224-5-git-send-email-yunlong.song@huawei.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 705750f2

tools/perf/Documentation/perf-list.txt

+6 −0
Original line number Diff line number Diff line
@@ -127,6 +127,12 @@ To limit the list use: 
One or more types can be used at the same time, listing the events for the

types specified.



Support raw format:



. '--raw-dump', shows the raw-dump of all the events.

. '--raw-dump [hw|sw|cache|tracepoint|pmu|event_glob]', shows the raw-dump of

  a certain kind of events.



SEE ALSO

--------

linkperf:perf-stat[1], linkperf:perf-top[1],

tools/perf/builtin-list.c

+8 −13
Original line number Diff line number Diff line
@@ -36,41 +36,36 @@ int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused) 


	setup_pager();



	if (raw_dump) {

		print_events(NULL, true);

		return 0;

	}



	if (!raw_dump)

		printf("\nList of pre-defined events (to be used in -e):\n\n");



	if (argc == 0) {

		print_events(NULL, false);

		print_events(NULL, raw_dump);

		return 0;

	}



	for (i = 0; i < argc; ++i) {

		if (strcmp(argv[i], "tracepoint") == 0)

			print_tracepoint_events(NULL, NULL, false);

			print_tracepoint_events(NULL, NULL, raw_dump);

		else if (strcmp(argv[i], "hw") == 0 ||

			 strcmp(argv[i], "hardware") == 0)

			print_symbol_events(NULL, PERF_TYPE_HARDWARE,

					event_symbols_hw, PERF_COUNT_HW_MAX, false);

					event_symbols_hw, PERF_COUNT_HW_MAX, raw_dump);

		else if (strcmp(argv[i], "sw") == 0 ||

			 strcmp(argv[i], "software") == 0)

			print_symbol_events(NULL, PERF_TYPE_SOFTWARE,

					event_symbols_sw, PERF_COUNT_SW_MAX, false);

					event_symbols_sw, PERF_COUNT_SW_MAX, raw_dump);

		else if (strcmp(argv[i], "cache") == 0 ||

			 strcmp(argv[i], "hwcache") == 0)

			print_hwcache_events(NULL, false);

			print_hwcache_events(NULL, raw_dump);

		else if (strcmp(argv[i], "pmu") == 0)

			print_pmu_events(NULL, false);

			print_pmu_events(NULL, raw_dump);

		else {

			char *sep = strchr(argv[i], ':'), *s;

			int sep_idx;



			if (sep == NULL) {

				print_events(argv[i], false);

				print_events(argv[i], raw_dump);

				continue;

			}

			sep_idx = sep - argv[i];
@@ -79,7 +74,7 @@ int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused) 
				return -1;



			s[sep_idx] = '\0';

			print_tracepoint_events(s, s + sep_idx + 1, false);

			print_tracepoint_events(s, s + sep_idx + 1, raw_dump);

			free(s);

		}

	}

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