From: Thomas Richter Date: Mon, 13 May 2019 08:02:20 +0000 (+0200) Subject: perf docs: Add description for stderr X-Git-Tag: v5.2-rc1~7^2^2~3 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=6cf626563998d3f8770cc25146986810ee4a5969;p=linux.git 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 Cc: Heiko Carstens Cc: Hendrik Brueckner Cc: Martin Schwidefsky Link: http://lkml.kernel.org/r/20190513080220.91966-1-tmricht@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- 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