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Commit 3d5d68aa authored by Kan Liang's avatar Kan Liang Committed by Arnaldo Carvalho de Melo
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perf record: Document setting '-e pmu/period=N/' in man page 



The 'period' param is not defined in
/sys/bus/event_sources/devices/<pmu>/format/*, but can be used, document
it.

Signed-off-by: default avatarKan Liang <kan.liang@intel.com>
Acked-by: default avatarJiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1436345097-11113-3-git-send-email-kan.liang@intel.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 60cd37eb

tools/perf/Documentation/perf-record.txt

+8 −0
Original line number Diff line number Diff line
@@ -45,6 +45,14 @@ OPTIONS 
          param1 and param2 are defined as formats for the PMU in:

          /sys/bus/event_sources/devices/<pmu>/format/*



	  There are also some params which are not defined in .../<pmu>/format/*.

	  These params can be used to set event defaults.

	  Here is a list of the params.

	  - 'period': Set event sampling period



	  Note: If user explicitly sets options which conflict with the params,

	  the value set by the params will be overridden.



        - a hardware breakpoint event in the form of '\mem:addr[/len][:access]'

          where addr is the address in memory you want to break in.

          Access is the memory access type (read, write, execute) it can