Commit-ID: 6cf626563998d3f8770cc25146986810ee4a5969 Gitweb: https://git.kernel.org/tip/6cf626563998d3f8770cc25146986810ee4a5969 Author: Thomas Richter <tmricht@xxxxxxxxxxxxx> AuthorDate: Mon, 13 May 2019 10:02:20 +0200 Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> CommitDate: Thu, 16 May 2019 14:17:24 -0300 perf docs: Add description for stderr 'perf report' displays recorded data on the screen and emits warnings and debug messages in the status line (last one on screen). perf also supports the possibility to write all debug messages to stderr (instead of writing them to the status line). This is achieved with the following command: # ./perf --debug stderr=1 report -vvvvv -i ~/fast.data 2>/tmp/2 # ll /tmp/2 -rw-rw-r-- 1 tmricht tmricht 5420835 May 7 13:46 /tmp/2 # The usage of variable stderr=1 is not documented, so add it to the perf man page. Signed-off-by: Thomas Richter <tmricht@xxxxxxxxxxxxx> Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx> Cc: Hendrik Brueckner <brueckner@xxxxxxxxxxxxxxxxxx> Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx> Link: http://lkml.kernel.org/r/20190513080220.91966-1-tmricht@xxxxxxxxxxxxx Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> --- tools/perf/Documentation/perf.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tools/perf/Documentation/perf.txt b/tools/perf/Documentation/perf.txt index 864e37597252..401f0ed67439 100644 --- a/tools/perf/Documentation/perf.txt +++ b/tools/perf/Documentation/perf.txt @@ -22,6 +22,8 @@ OPTIONS verbose - general debug messages ordered-events - ordered events object debug messages data-convert - data convert command debug messages + stderr - write debug output (option -v) to stderr + in browser mode --buildid-dir:: Setup buildid cache directory. It has higher priority than
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