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perf list: Support long jevents descriptions

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Previously we were dropping the useful longer descriptions that some
events have in the event list completely. This patch makes them appear with
perf list.

Old perf list:

baclears:
  baclears.all
       [Counts the number of baclears]

vs new:

perf list -v:
...
baclears:
  baclears.all
       [The BACLEARS event counts the number of times the front end is
        resteered, mainly when the Branch Prediction Unit cannot provide
        a correct prediction and this is corrected by the Branch Address
        Calculator at the front end. The BACLEARS.ANY event counts the
        number of baclears for any type of branch]

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/1473978296-20712-13-git-send-email-sukadev@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Sukadev Bhattiprolu
2016-09-15 15:24:48 -07:00
committed by Arnaldo Carvalho de Melo
parent 794ba54a83
commit c8d6828a65
6 changed files with 34 additions and 15 deletions
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5
tools/perf/util/parse-events.c
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@@ -2263,7 +2263,8 @@ out_enomem:
/*
* Print the help text for the event symbols:
*/
void print_events(const char *event_glob, bool name_only, bool quiet_flag)
void print_events(const char *event_glob, bool name_only, bool quiet_flag,
bool long_desc)
{
print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
@@ -2273,7 +2274,7 @@ void print_events(const char *event_glob, bool name_only, bool quiet_flag)
print_hwcache_events(event_glob, name_only);
print_pmu_events(event_glob, name_only, quiet_flag);
print_pmu_events(event_glob, name_only, quiet_flag, long_desc);
if (event_glob != NULL)
return;