From: Jiri Olsa <jolsa@kernel.org>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: lkml <linux-kernel@vger.kernel.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Ingo Molnar <mingo@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Namhyung Kim <namhyung@kernel.org>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Michael Petlan <mpetlan@redhat.com>,
Ian Rogers <irogers@google.com>,
Stephane Eranian <eranian@google.com>,
Alexei Budankov <abudankov@huawei.com>
Subject: [PATCH 1/4] perf tools: Reformat record's control fd man text
Date: Wed, 16 Dec 2020 09:39:11 +0100 [thread overview]
Message-ID: <20201216083914.47215-2-jolsa@kernel.org> (raw)
In-Reply-To: <20201216083914.47215-1-jolsa@kernel.org>
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>
---
tools/perf/Documentation/perf-record.txt | 16 +++++++++++-----
1 file changed, 11 insertions(+), 5 deletions(-)
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt
index 768888b9326a..f896c4b791e1 100644
--- a/tools/perf/Documentation/perf-record.txt
+++ b/tools/perf/Documentation/perf-record.txt
@@ -634,11 +634,17 @@ 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
--
2.26.2
next prev parent reply other threads:[~2020-12-16 8:40 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-16 8:39 [PATCHv3 0/4] perf tools: Allow to enable/disable events via control pipe Jiri Olsa
2020-12-16 8:39 ` Jiri Olsa [this message]
2020-12-16 8:39 ` [PATCH 2/4] perf tools: Add evlist__disable_evsel/evlist__enable_evsel Jiri Olsa
2020-12-16 8:39 ` [PATCH 3/4] perf tools: Allow to enable/disable events via control file Jiri Olsa
2020-12-16 8:39 ` [PATCH 4/4] perf tools: Add evlist control command Jiri Olsa
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