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perf list: Place the header text in its right position 

The hearer text 'List of pre-defined events (to be used in -e):' is
placed in an improper function, which causes an abnormal output, e.g.
'perf list hw' shows no guiding text at all, and 'perf list hw
L1-dcache*' shows the guiding text incorrectly in the middle of the
output.

Example
Before this patch:

 $ perf list hw L1-dcache*

   branch-instructions OR branches                    [Hardware event]
   branch-misses                                      [Hardware event]
   bus-cycles                                         [Hardware event]
   cache-misses                                       [Hardware event]
   cache-references                                   [Hardware event]
   cpu-cycles OR cycles                               [Hardware event]
   instructions                                       [Hardware event]
   stalled-cycles-backend OR idle-cycles-backend      [Hardware event]
   stalled-cycles-frontend OR idle-cycles-frontend    [Hardware event]

 List of pre-defined events (to be used in -e):              <-- incorrect position
   L1-dcache-load-misses                              [Hardware cache event]
   L1-dcache-loads                                    [Hardware cache event]
   L1-dcache-prefetch-misses                          [Hardware cache event]
   L1-dcache-prefetches                               [Hardware cache event]
   L1-dcache-store-misses                             [Hardware cache event]
   L1-dcache-stores                                   [Hardware cache event]

After this patch:

 $ perf list hw L1-dcache*

 List of pre-defined events (to be used in -e):              <-- correct position

   branch-instructions OR branches                    [Hardware event]
   branch-misses                                      [Hardware event]
   bus-cycles                                         [Hardware event]
   cache-misses                                       [Hardware event]
   cache-references                                   [Hardware event]
   cpu-cycles OR cycles                               [Hardware event]
   instructions                                       [Hardware event]
   stalled-cycles-backend OR idle-cycles-backend      [Hardware event]
   stalled-cycles-frontend OR idle-cycles-frontend    [Hardware event]

   L1-dcache-load-misses                              [Hardware cache event]
   L1-dcache-loads                                    [Hardware cache event]
   L1-dcache-prefetch-misses                          [Hardware cache event]
   L1-dcache-prefetches                               [Hardware cache event]
   L1-dcache-store-misses                             [Hardware cache event]
   L1-dcache-stores                                   [Hardware cache event]

Signed-off-by: Yunlong Song <yunlong.song@huawei.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1423833115-11199-8-git-send-email-yunlong.song@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
wifi-calibration
Yunlong Song 2015-02-13 21:11:55 +08:00 committed by Arnaldo Carvalho de Melo
parent 74390aa556
commit 619a303c1b
2 changed files with 3 additions and 5 deletions
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3
tools/perf/builtin-list.c
View File

@ -41,6 +41,9 @@ int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused)
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);
return 0;

5
tools/perf/util/parse-events.c
View File

@ -1319,11 +1319,6 @@ static void print_symbol_events(const char *event_glob, unsigned type,
*/
void print_events(const char *event_glob, bool name_only)
{
if (!name_only) {
printf("\n");
printf("List of pre-defined events (to be used in -e):\n");
}
print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
event_symbols_hw, PERF_COUNT_HW_MAX, name_only);