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Subject[PATCH v2 4/5] perf list: Extend raw-dump to certain kind of events
Date
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: Yunlong Song <yunlong.song@huawei.com>
---
tools/perf/Documentation/perf-list.txt | 6 ++++++
tools/perf/builtin-list.c | 21 ++++++++-------------
2 files changed, 14 insertions(+), 13 deletions(-)

diff --git a/tools/perf/Documentation/perf-list.txt b/tools/perf/Documentation/perf-list.txt
index 3e2aec9..4692d27 100644
--- a/tools/perf/Documentation/perf-list.txt
+++ b/tools/perf/Documentation/perf-list.txt
@@ -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],
diff --git a/tools/perf/builtin-list.c b/tools/perf/builtin-list.c
index 8b323e0..af5bd05 100644
--- a/tools/perf/builtin-list.c
+++ b/tools/perf/builtin-list.c
@@ -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);
}
}
--
1.8.5.5


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