tree ce9fa23abed76d438d77bc59e2bd903abe264973
parent a5f1d42f8a0a4853425d021c273e8d0ee94d8d7d
author Namhyung Kim <namhyung@google.com> 1575341838 +0900
committer Namhyung Kim <namhyung@google.com> 1576830769 +0900

simpleperf: Use PMU's cpumask if available

Some PMU events only support profiling from dedicated cpus.  For those
events there are cpumask files in the /sys/bus/event_source/devices/<PMU>
directory.  So override the cpu setting for them.

Test: manually tested with a PMU has the cpumask file
Change-Id: I5e50a7d6f88cb0bc80b45e774cf048116698b3de
Signed-off-by: Namhyung Kim <namhyung@google.com>