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| author | Marcelo Tosatti <mtosatti@redhat.com> | 2024-01-29 17:42:18 -0300 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2024-02-19 12:38:22 -0500 |
| commit | c7f19c48d000e67bac82eb4089f6f819df97e415 (patch) | |
| tree | aebc2225bdc2e63b373250fa5059842fb0f6b7a2 | |
| parent | e53ab33dd68f67858e816508e796b5ba3892c8b0 (diff) | |
| download | trace-cmd-c7f19c48d000e67bac82eb4089f6f819df97e415.tar.gz | |
trace-cmd: Fix --poll trace recording
When using --poll, move_data() returns -1 and errno is set to EAGAIN.
This causes the record threads to stop recording.
Fix it by returning to the read loop in case EAGAIN, if --poll
is specified.
Link: https://lore.kernel.org/linux-trace-devel/ZbgNqiyocHf/FEQw@tpad
Fixes: 2610bdcde43a6 ("trace-cmd library: Use tracefs_cpu for recorder helpers")
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
| -rw-r--r-- | lib/trace-cmd/trace-recorder.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/trace-cmd/trace-recorder.c b/lib/trace-cmd/trace-recorder.c index 70ce52e2..0633edf5 100644 --- a/lib/trace-cmd/trace-recorder.c +++ b/lib/trace-cmd/trace-recorder.c @@ -421,6 +421,9 @@ int tracecmd_start_recording(struct tracecmd_recorder *recorder, unsigned long s if (ret < 0) { if (errno == EINTR) continue; + if ((recorder->flags & TRACECMD_RECORD_POLL) && + errno == EAGAIN) + continue; return ret; } read += ret; |