diff options
| author | Suzuki K. Poulose <suzuki.poulose@arm.com> | 2015-02-13 21:40:58 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-03-02 17:51:17 +0300 |
| commit | 3b4331d9a4f2d99603c38bfcac79943b7c6c5439 (patch) | |
| tree | 26fbfb1c187379aeb43da02d6218a70ec617340d /tools/perf/config | |
| parent | c65568c5456e5216e5467e81d1e04c1f5bdd453f (diff) | |
| download | linux-3b4331d9a4f2d99603c38bfcac79943b7c6c5439.tar.xz | |
perf stat: Report unsupported events properly
Commit 1971f59 (perf stat: Use read_counter in read_counter_aggr )
broke the perf stat output for unsupported counters.
$ perf stat -v -a -C 0 -e CCI_400/config=24/ sleep 1
Warning:
CCI_400/config=24/ event is not supported by the kernel.
Performance counter stats for 'system wide':
0 CCI_400/config=24/
1.080265400 seconds time elapsed
Where it used to be :
$ perf stat -v -a -C 0 -e CCI_400/config=24/ sleep 1
Warning:
CCI_400/config=24/ event is not supported by the kernel.
Performance counter stats for 'system wide':
<not supported> CCI_400/config=24/
1.083840675 seconds time elapsed
This patch fixes the issues by checking if the counter is supported,
before reading and logging the counter value.
Signed-off-by: Suzuki K. Poulose <suzuki.poulose@arm.com>
Acked-by: David Ahern <dsahern@gmail.com>
Tested-by: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1423852858-8455-1-git-send-email-suzuki.poulose@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/config')
0 files changed, 0 insertions, 0 deletions