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| author | Wang Nan <wangnan0@huawei.com> | 2016-06-16 08:02:41 +0000 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-06-21 13:18:35 -0300 |
| commit | 0aab21363ffa66d6e7340bc50cc5bfae865fd1a6 (patch) | |
| tree | 5e716031fc08a0d62d7213c63d149e6140069555 /tools/perf/Documentation/perf-record.txt | |
| parent | f078464925f5b5c977c1196c67cae49cd82f40ff (diff) | |
| download | blackbird-op-linux-0aab21363ffa66d6e7340bc50cc5bfae865fd1a6.tar.gz blackbird-op-linux-0aab21363ffa66d6e7340bc50cc5bfae865fd1a6.zip | |
perf record: Add --dry-run option to check cmdline options
With '--dry-run', 'perf record' doesn't do reall recording. Combine with
llvm.dump-obj option, --dry-run can be used to help compile BPF objects
for embedded platform.
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1466064161-48553-3-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation/perf-record.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-record.txt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index 8dbee832abd9..5b46b1d1a37c 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -360,6 +360,13 @@ particular perf.data snapshot should be kept or not. Implies --timestamp-filename, --no-buildid and --no-buildid-cache. +--dry-run:: +Parse options then exit. --dry-run can be used to detect errors in cmdline +options. + +'perf record --dry-run -e' can act as a BPF script compiler if llvm.dump-obj +in config file is set to true. + SEE ALSO -------- linkperf:perf-stat[1], linkperf:perf-list[1] |
