Hi, Streams, and thus trace-cmd profile, are not working. A simple "trace-cmd profile ls" command exit with the following message"Creating stream for 0". I've been looking at it and the issue is that tracecmd_read_headers() tries to read the cmdlines, cpus and options sections that have not been written to the temporary file when called from trace_stream_init().
AFAICT, it is caused by the two following patches:
commit 1eea02a4 ("trace-cmd: Write saved cmdlines in the trace file at
the end of the trace.") which moved the writing of cmdlines from
create_file_fd() to tracecmd_create_file_latency() and
tracecmd_append_cpu_data()
commit 5d4d7ec3 ("trace-cmd: Move reading of trace.dat options to
tracecmd_read_headers()") which moved the reading of options and cpu
datas to tracecmd_read_headers().
Thanks,
Jerome
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