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authorIngo Molnar <mingo@elte.hu>2011-04-29 16:11:03 +0200
committerIngo Molnar <mingo@elte.hu>2011-04-29 16:22:33 +0200
commit370faf1dd0461ad811852c8abbbcd3d73b1e4fc4 (patch)
tree6933cc889ea07a0dc0841d9af90304a39cf09ec0
parentfce3c786d3a49eff397583b4b62fa38df90db937 (diff)
downloadop-kernel-dev-370faf1dd0461ad811852c8abbbcd3d73b1e4fc4.zip
op-kernel-dev-370faf1dd0461ad811852c8abbbcd3d73b1e4fc4.tar.gz
perf stat: Fail softly on unsupported events
David Ahern reported this perf stat failure: > # /tmp/build-perf/perf stat -- sleep 1 > Error: stalled-cycles-frontend event is not supported. > Fatal: Not all events could be opened. > > This is a Dell R410 with an E5620 processor. Fail in a softer fashion on unknown/unsupported events. Reported-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/n/tip-7y40wib8n006io7hjpn1dsrm@git.kernel.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--tools/perf/builtin-stat.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 9e596ab..c8b535b 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -377,7 +377,7 @@ static int run_perf_stat(int argc __used, const char **argv)
list_for_each_entry(counter, &evsel_list->entries, node) {
if (create_perf_stat_counter(counter) < 0) {
- if (errno == EINVAL || errno == ENOSYS)
+ if (errno == EINVAL || errno == ENOSYS || errno == ENOENT)
continue;
if (errno == EPERM || errno == EACCES) {
@@ -385,8 +385,6 @@ static int run_perf_stat(int argc __used, const char **argv)
"\t Consider tweaking"
" /proc/sys/kernel/perf_event_paranoid or running as root.",
system_wide ? "system-wide " : "");
- } else if (errno == ENOENT) {
- error("%s event is not supported. ", event_name(counter));
} else {
error("open_counter returned with %d (%s). "
"/bin/dmesg may provide additional information.\n",
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