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| author | Namhyung Kim <namhyung@kernel.org> | 2017-06-18 17:23:00 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-06-20 04:05:52 +0300 |
| commit | 29681bc5bb4326c2f9eac5dc68d8fad3e88b4bb5 (patch) | |
| tree | e9fdc6f267b0a2cd332c0ccf4ac651304f4dbe52 /tools/testing/selftests | |
| parent | e7bd9ba20a9ec7024a0566a93c22b9571a48939a (diff) | |
| download | linux-29681bc5bb4326c2f9eac5dc68d8fad3e88b4bb5.tar.xz | |
perf ftrace: Move setup_pager before opening trace_pipe
The 'perf ftrace' command fails to reset tracer after finishing
recording like below:
$ sudo perf ftrace -v hello
write 'nop' to tracing/current_tracer failed: Device or resource busy
...
This is because the trace_pipe file is open in pager process. Move the
pager setup to before opening the file.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: kernel-team@lge.com
Fixes: 583359646fde ("perf ftrace: Use pager for displaying result")
Link: http://lkml.kernel.org/r/20170618142302.25390-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/testing/selftests')
0 files changed, 0 insertions, 0 deletions