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linux-sg2042
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perf top: Update event name when falling back to cpu-clock 

The 'perf top' command falls back to cpu-clock if the H/W cycles event
is not supported, but the event name is not updated leading to a
misleading header:

PerfTop: 8 irqs/sec  kernel:75.0%  exact:  0.0% [1000Hz cycles],  ...

Update the event name when the event type is changed so that the
header displays correctly:

PerfTop: 794 irqs/sec  kernel:100.0%  exact:  0.0% [1000Hz cpu-clock], ...

Signed-off-by: David Ahern <dsahern@gmail.com>
Link: http://lkml.kernel.org/r/1336495789-58420-1-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
David Ahern 2012-05-08 10:49:49 -06:00 committed by Arnaldo Carvalho de Melo
parent 979987a567
commit 40491eaa46
1 changed files with 4 additions and 0 deletions
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4
tools/perf/builtin-top.c
View File

@ -948,6 +948,10 @@ try_again:
attr->type = PERF_TYPE_SOFTWARE;
attr->config = PERF_COUNT_SW_CPU_CLOCK;
if (counter->name) {
free(counter->name);
counter->name = strdup(event_name(counter));
}
goto try_again;
}