perf tools: Add per-pkg format file parsing
The .per-pkg file indicates that all but one value per socket should be discarded. Adding support to check up this file and set event flag accordingly. This patch is part of Matt's original patch: http://marc.info/?l=linux-kernel&m=141527675002139&w=2 only the file parsing part, the rest is solved differently. Signed-off-by: Matt Fleming <matt.fleming@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1416562275-12404-9-git-send-email-jolsa@kernel.orgSigned-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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