perf evsel: Add support for enabling counters
Add support for enabling already set up counters by using an ioctl. I share some code with the filter setup. Signed-off-by: NAndi Kleen <ak@linux.intel.com> Reviewed-by: NJiri Olsa <jolsa@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1375490473-1503-3-git-send-email-andi@firstfloor.org [ Fixed up 'err' variable indentation ] Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
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