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authorStephane Eranian <eranian@google.com>2011-05-17 15:36:19 +0200
committerIngo Molnar <mingo@elte.hu>2011-05-17 20:45:36 +0200
commit94692349c4fc1bc74c19a28f9379509361a06a3b (patch)
tree005d42a398d973e1ec52e00512177dce1305e666 /tools
parent449a66fd1fa75d36dca917704827c40c8f416bca (diff)
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perf: Fix multi-event parsing bug
This patch fixes an issue with event parsing. The following commit appears to have broken the ability to specify a comma separated list of events: commit ceb53fbf6dbb1df26d38379a262c6981fe73dd36 Author: Ingo Molnar <mingo@elte.hu> Date: Wed Apr 27 04:06:33 2011 +0200 perf stat: Fail more clearly when an invalid modifier is specified This patch fixes this while preserving the desired effect: $ perf stat -e instructions:u,instructions:k ls /dev/null /dev/null Performance counter stats for 'ls /dev/null': 365956 instructions:u # 0.00 insns per cycle 731806 instructions:k # 0.00 insns per cycle 0.001108862 seconds time elapsed $ perf stat -e task-clock-msecs true invalid event modifier: '-msecs' Run 'perf list' for a list of valid events and modifiers Signed-off-by: Stephane Eranian <eranian@google.com> Cc: acme@redhat.com Cc: peterz@infradead.org Cc: fweisbec@gmail.com Link: http://lkml.kernel.org/r/20110517133619.GA6999@quad Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/util/parse-events.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index ffa493a..41982c3 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -734,6 +734,9 @@ parse_event_modifier(const char **strp, struct perf_event_attr *attr)
if (!*str)
return 0;
+ if (*str == ',')
+ return 0;
+
if (*str++ != ':')
return -1;