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perf ftrace: Add support for trace option sleep-time

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This adds an option '--graph-opts nosleep-time' which allow us only to
measure on-CPU time. This option is function_graph tracer only.

Signed-off-by: Changbin Du <changbin.du@gmail.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Link: http://lore.kernel.org/lkml/20200808023141.14227-10-changbin.du@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Changbin Du
2020-08-08 10:31:32 +08:00
committed by Arnaldo Carvalho de Melo
parent b1d84af6f5
commit 38988f2e7e
2 changed files with 45 additions and 0 deletions
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4
tools/perf/Documentation/perf-ftrace.txt
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@@ -101,6 +101,10 @@ OPTIONS
--graph-depth=::
Set max depth for function graph tracer to follow
--graph-opts::
List of options allowed to set:
nosleep-time - Measure on-CPU time only for function_graph tracer.
SEE ALSO
--------
linkperf:perf-record[1], linkperf:perf-trace[1]