diff options
| author | Suzuki K Poulose <suzuki.poulose@arm.com> | 2018-09-20 13:17:50 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-11-20 18:00:37 +0100 |
| commit | af525b7dcfc09a48d1a570d6c6f2961ff4f640b7 (patch) | |
| tree | 0a4200cf4d53459db27ce9641dd968c28a08b326 /drivers/hwtracing/coresight/coresight-etm-perf.c | |
| parent | b6d0dacc13bd1f69eca981d62ab1445046ff3953 (diff) | |
coresight: perf: Disable trace path upon source error
[ Upstream commit 4f8ef21007531c3d7cb5b826e7b2c8999b65ecae ]
We enable the trace path, before activating the source.
If we fail to enable the source, we must disable the path
to make sure it is available for another session.
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/hwtracing/coresight/coresight-etm-perf.c')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-etm-perf.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/hwtracing/coresight/coresight-etm-perf.c b/drivers/hwtracing/coresight/coresight-etm-perf.c index 99cbf5d5d1c1..69349b93e874 100644 --- a/drivers/hwtracing/coresight/coresight-etm-perf.c +++ b/drivers/hwtracing/coresight/coresight-etm-perf.c @@ -317,11 +317,13 @@ static void etm_event_start(struct perf_event *event, int flags) /* Finally enable the tracer */ if (source_ops(csdev)->enable(csdev, event, CS_MODE_PERF)) - goto fail_end_stop; + goto fail_disable_path; out: return; +fail_disable_path: + coresight_disable_path(path); fail_end_stop: perf_aux_output_flag(handle, PERF_AUX_FLAG_TRUNCATED); perf_aux_output_end(handle, 0); |