]> git.baikalelectronics.ru Git - kernel.git/commit
perf pmu: Expand PMU events by prefix match
authorAndi Kleen <ak@linux.intel.com>
Mon, 20 Mar 2017 20:17:03 +0000 (13:17 -0700)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Tue, 21 Mar 2017 19:08:32 +0000 (16:08 -0300)
commita8c8b9ada5108e7bebbc7ccc4556fa8295a66913
treefa2ea1a53b031986bbadde0950a9dd8fed8b1fc0
parenteee52ba96012a32e0f3fa5c94865e921af678a0c
perf pmu: Expand PMU events by prefix match

When the user specifies a pmu directly, expand it automatically with a
prefix match for all available PMUs, similar as we do for the normal
aliases now.

This allows to specify attributes for duplicated boxes quickly.  For
example uncore_cbox_{0,6}/.../ can be now specified as uncore_cbox/.../
and it gets automatically expanded for all boxes.

This generally makes it more concise to write uncore specifications, and
also avoids the need to know the exact topology of the system.

Before:

  % perf stat -a -e uncore_cbox_0/event=0x35,umask=0x1,filter_opc=0x19C/,\
  uncore_cbox_1/event=0x35,umask=0x1,filter_opc=0x19C/,\
  uncore_cbox_2/event=0x35,umask=0x1,filter_opc=0x19C/,\
  uncore_cbox_3/event=0x35,umask=0x1,filter_opc=0x19C/,\
  uncore_cbox_4/event=0x35,umask=0x1,filter_opc=0x19C/,\
  uncore_cbox_5/event=0x35,umask=0x1,filter_opc=0x19C/ sleep 1

After:

  % perf stat -a -e uncore_cbox/event=0x35,umask=0x1,filter_opc=0x19C/ sleep 1

v2: Handle all bison rules. Move multi add code to separate function.
    Handle uncore_ prefix correctly.
v3: Move parse_events_multi_pmu_add to separate patch. Move uncore
    prefix check to separate patch.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20170320201711.14142-6-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools/perf/util/parse-events.c
tools/perf/util/parse-events.h
tools/perf/util/parse-events.y