diff options
| author | Kai Vehmanen <[email protected]> | 2019-05-24 14:23:06 -0500 |
|---|---|---|
| committer | Mark Brown <[email protected]> | 2019-05-28 15:52:34 +0100 |
| commit | ec9025e5d3c5b5f2027fa74be6afdaad9908b546 (patch) | |
| tree | fb6d5d7973c2afdec6ca5d63f95c740c76dd21de /tools/perf/scripts/python/bin/stackcollapse-record | |
| parent | f627b0524ccf993b646bd56f9bdacc973c8c39cc (diff) | |
ASoC: SOF: force end-of-file for debugfs trace at suspend
Current trace implementation gets out of sync when sof device
is put to suspend. The debugfs file handle is kept open, but
firmware will reset its state. After resume, debugfs client's
read offset will not be synchronized to firmware and this may
result in traces read in incorrect order and/or stale data being
read after resume.
Add logic to signal end-of-file to read() when firmware tracing
has ended, and all trace data has been read. This allows debugfs
client to capture all trace data, and reopen the trace file to
ensure proper synchronization with firmware after reopening
the node.
Signed-off-by: Kai Vehmanen <[email protected]>
Signed-off-by: Pierre-Louis Bossart <[email protected]>
Signed-off-by: Mark Brown <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-record')
0 files changed, 0 insertions, 0 deletions