[RFC 00/13] perf_env/CPU socket reorg/fixes

[Arnaldo Carvalho de Melo]

Hi,

	Please take a look at these changes to fix the problems reported by
Wang Nan wrt accesses to the cpu_topology_map information.

	The fixes are present on these following two csets:

  perf event: Use machine->env to find the cpu -> socket mapping
  perf report: Do not blindly use env->cpu[al.cpu].socket_id

	The rest are fixes made while working on this, infrastructure to enable
the fixes, reverts for things that ended up not being necessary and some
cleanups.

	It is available at:

 git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git perf/env

	Please let me know if I can have your Acked-by, Tested-by or
Reviewed-by.

- Arnaldo

Arnaldo Carvalho de Melo (13):
  perf env: Move perf_env out of header.h and session.c into separate object
  perf env: Rename some leftovers from rename to perf_env
  perf env: Adopt perf_header__set_cmdline
  perf env: Introduce read_cpu_topology_map() method
  perf sort: Set flag stating if the "socket" key is being used
  perf top: Cache the cpu topology info when "-s socket" is used
  perf hists browser: Fixup the "cpu" column width calculation
  perf machine: Add pointer to sample's environment
  perf event: Use machine->env to find the cpu -> socket mapping
  perf report: Do not blindly use env->cpu[al.cpu].socket_id
  Revert "perf evsel: Add a backpointer to the evlist a evsel is in"
  perf evsel: Remove forward declaration of 'struct perf_evlist'
  Revert "perf evlist: Add backpointer for perf_env to evlist"
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