[PATCH 0/6] perf header: Save and reuse feature information in header (v5)

[Namhyung Kim <namhyung@kernel.org>]

Hi,

Currently the perf header information is used only at initial setup
time and discarded.  If it's saved we could reuse the information for
various purpose - for instance, perf kvm stat needs to know cpuid so
it had to invent an accessor.

Thanks,
Namhyung


v4 -> v5:
 * Use saved cpuid info for perf kvm (David)

v3 -> v4:
 * rename perf_header_info to perf_session_env (Arnaldo)

v2 -> v3:
 * patch 1-3 in v2 merged into tip
 * rebased on current acme/perf/core

v1 -> v2:
 * not touch EVENT_DESC feature handling
 * split out struct perf_header_info
 * simplify multi-string handling
 * add some cleanup patches

Namhyung Kim (6):
  perf header: Add struct perf_session_env
  perf header: Add ->process callbacks to most of features
  perf header: Use pre-processed session env when printing
  perf header: Remove unused @feat arg from ->process callback
  perf kvm: Use perf_session_env for reading cpuid
  perf header: Remove perf_header__read_feature

 tools/perf/builtin-kvm.c |  10 +-
 tools/perf/util/header.c | 598 ++++++++++++++++++++++++++++++-----------------
 tools/perf/util/header.h |  25 +-
 3 files changed, 406 insertions(+), 227 deletions(-)

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1.7.11.4