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| author | Jiri Olsa <jolsa@kernel.org> | 2020-12-16 11:39:11 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2020-12-17 20:36:17 +0300 |
| commit | feca8a8342d3f53e394c9fc7d985b98ec0250ce1 (patch) | |
| tree | 6b872bb3b9722c8dde8f649eca151adef81b0591 /tools/perf | |
| parent | 526671bfc47df175eb87f96067d51b389a8af50d (diff) | |
| download | linux-feca8a8342d3f53e394c9fc7d985b98ec0250ce1.tar.xz | |
perf tools: Reformat record's control fd man text
Adding available control commands in separate paragraph, so it's more
readable and easier to add new commands.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Budankov <abudankov@huawei.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20201216083914.47215-2-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/Documentation/perf-record.txt | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index 2d30e525a600..34cf651ee237 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -637,11 +637,17 @@ endif::HAVE_LIBPFM[] --control=fifo:ctl-fifo[,ack-fifo]:: --control=fd:ctl-fd[,ack-fd]:: ctl-fifo / ack-fifo are opened and used as ctl-fd / ack-fd as follows. -Listen on ctl-fd descriptor for command to control measurement ('enable': enable events, -'disable': disable events, 'snapshot': AUX area tracing snapshot). Measurements can be -started with events disabled using --delay=-1 option. Optionally send control command -completion ('ack\n') to ack-fd descriptor to synchronize with the controlling process. -Example of bash shell script to enable and disable events during measurements: +Listen on ctl-fd descriptor for command to control measurement. + +Available commands: + 'enable' : enable events + 'disable' : disable events + 'snapshot': AUX area tracing snapshot). + +Measurements can be started with events disabled using --delay=-1 option. Optionally +send control command completion ('ack\n') to ack-fd descriptor to synchronize with the +controlling process. Example of bash shell script to enable and disable events during +measurements: #!/bin/bash |