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perf record: Explicity program a default counter 

Up until now record has worked on the assumption that type=0, config=0
was a suitable configuration - which it is. Lets make this a little more
explicit and more readable via the use of proper symbols.

[ Impact: cleanup ]

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra 2009-06-11 23:11:50 +02:00 committed by Ingo Molnar
parent 081fad8617
commit bbd36e5e6a
1 changed files with 5 additions and 2 deletions
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7
tools/perf/builtin-record.c
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@ -568,8 +568,11 @@ int cmd_record(int argc, const char **argv, const char *prefix)
if (!argc && target_pid == -1 && !system_wide)
usage_with_options(record_usage, options);
if (!nr_counters)
nr_counters = 1;
if (!nr_counters) {
nr_counters = 1;
attrs[0].type = PERF_TYPE_HARDWARE;
attrs[0].config = PERF_COUNT_HW_CPU_CYCLES;
}
for (counter = 0; counter < nr_counters; counter++) {
if (attrs[counter].sample_period)