summaryrefslogtreecommitdiff
path: root/tools
diff options
context:
space:
mode:
authorMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>2011-08-11 20:02:53 +0900
committerArnaldo Carvalho de Melo <acme@redhat.com>2011-08-12 09:27:11 -0300
commit13e27d7686c457c625242fc2c20be30eef942408 (patch)
tree8afd13bcf1201d4d7b25c9d46698cf05f359364d /tools
parent36c0c588b9ea979b619d6ddced410f9551e4c5fa (diff)
downloadlwn-13e27d7686c457c625242fc2c20be30eef942408.tar.gz
lwn-13e27d7686c457c625242fc2c20be30eef942408.zip
perf probe: Warn when more than one line are given
Check multiple --lines option and print warning informing that only the first specified --line option is valid. Changes from the 1st post: - Accept only the first option instead of the last. - Fix warning message according to David's comment. - Mark as a bugfix. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: yrl.pp-manager.tt@hitachi.com Link: http://lkml.kernel.org/r/20110811110253.19900.96192.stgit@fedora15 Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/builtin-probe.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c
index 5f2a5c7046df..710ae3d0a489 100644
--- a/tools/perf/builtin-probe.c
+++ b/tools/perf/builtin-probe.c
@@ -134,10 +134,18 @@ static int opt_show_lines(const struct option *opt __used,
{
int ret = 0;
- if (str)
- ret = parse_line_range_desc(str, &params.line_range);
- INIT_LIST_HEAD(&params.line_range.line_list);
+ if (!str)
+ return 0;
+
+ if (params.show_lines) {
+ pr_warning("Warning: more than one --line options are"
+ " detected. Only the first one is valid.\n");
+ return 0;
+ }
+
params.show_lines = true;
+ ret = parse_line_range_desc(str, &params.line_range);
+ INIT_LIST_HEAD(&params.line_range.line_list);
return ret;
}