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authorArnaldo Carvalho de Melo <acme@redhat.com>2011-01-10 13:36:24 -0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2011-01-10 13:36:24 -0200
commitaa7bc7ef73efc46d7c3a0e185eefaf85744aec98 (patch)
tree638bfb5be868a450fd1802e672aa9e7ab9bb76c8 /tools
parent5a3446bc648d86a99a895e93d28d7df00bbbfb3c (diff)
downloadlinux-2.6.38-lt-ux500-aa7bc7ef73efc46d7c3a0e185eefaf85744aec98.tar.gz
perf tools: Emit clearer message for sys_perf_event_open ENOENT return
Improve sys_perf_event_open ENOENT return handling in top and record, just like 5a3446b does for stat. Cc: David Ahern <daahern@cisco.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/builtin-record.c3
-rw-r--r--tools/perf/builtin-top.c2
2 files changed, 5 insertions, 0 deletions
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 7bc04903548..7069bd3e90b 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -331,6 +331,9 @@ try_again:
else if (err == ENODEV && cpu_list) {
die("No such device - did you specify"
" an out-of-range profile CPU?\n");
+ } else if (err == ENOENT) {
+ die("%s event is not supported. ",
+ event_name(evsel));
} else if (err == EINVAL && sample_id_all_avail) {
/*
* Old kernel, no attr->sample_id_type_all field
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 1e67ab9c7eb..6ce4042421b 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -1247,6 +1247,8 @@ try_again:
die("Permission error - are you root?\n"
"\t Consider tweaking"
" /proc/sys/kernel/perf_event_paranoid.\n");
+ if (err == ENOENT)
+ die("%s event is not supported. ", event_name(evsel));
/*
* If it's cycles then fall back to hrtimer
* based cpu-clock-tick sw counter, which