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authorDavid Ahern <dsahern@gmail.com>2011-04-29 18:04:15 -0400
committerIngo Molnar <mingo@elte.hu>2011-04-29 18:18:14 -0400
commitc63ca0c01d73563d4e2ab174bb3dd1e5efb907e6 (patch)
treec00105af90d900c5eacacb43bbb499229043d0f9 /tools/perf
parent947b4ad1d198b7303ecc961f4939a331be0c48f0 (diff)
perf stat: Tell user about unsupported events in the list
Similar to perf-record, tell user about unsupported events that will not be counted if invoked in verbose mode. e.g., $ perf stat -e dTLB-prefetch-misses -v -- sleep 1 dTLB-prefetch-misses event is not supported by the kernel. dTLB-prefetch-misses: 0 0 0 Performance counter stats for 'sleep 1': <not counted> dTLB-prefetch-misses 1.001884783 seconds time elapsed Signed-off-by: David Ahern <dsahern@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Link: http://lkml.kernel.org/r/1304114655-10600-1-git-send-email-dsahern@gmail.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf')
-rw-r--r--tools/perf/builtin-stat.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index c8b535bc27bd..602c3c96fa1e 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -377,8 +377,12 @@ static int run_perf_stat(int argc __used, const char **argv)
377 377
378 list_for_each_entry(counter, &evsel_list->entries, node) { 378 list_for_each_entry(counter, &evsel_list->entries, node) {
379 if (create_perf_stat_counter(counter) < 0) { 379 if (create_perf_stat_counter(counter) < 0) {
380 if (errno == EINVAL || errno == ENOSYS || errno == ENOENT) 380 if (errno == EINVAL || errno == ENOSYS || errno == ENOENT) {
381 if (verbose)
382 ui__warning("%s event is not supported by the kernel.\n",
383 event_name(counter));
381 continue; 384 continue;
385 }
382 386
383 if (errno == EPERM || errno == EACCES) { 387 if (errno == EPERM || errno == EACCES) {
384 error("You may not have permission to collect %sstats.\n" 388 error("You may not have permission to collect %sstats.\n"