Commit-ID: 370faf1dd0461ad811852c8abbbcd3d73b1e4fc4
Gitweb: http://git.kernel.org/tip/370faf1dd0461ad811852c8abbbcd3d73b1e4fc4
Author: Ingo Molnar <mingo@xxxxxxx>
AuthorDate: Fri, 29 Apr 2011 16:11:03 +0200
Committer: Ingo Molnar <mingo@xxxxxxx>
CommitDate: Fri, 29 Apr 2011 16:22:33 +0200
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@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-7y40wib8n006io7hjpn1dsrm@xxxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
tools/perf/builtin-stat.c | 4 +---
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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