linux-kernel - [PATCHv3 0/5] perf, tool: Fix endian issues

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Date:	Mon,  7 May 2012 13:29:04 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	acme@...hat.com, a.p.zijlstra@...llo.nl, mingo@...e.hu,
	paulus@...ba.org, cjashfor@...ux.vnet.ibm.com, fweisbec@...il.com
Cc:	linux-kernel@...r.kernel.org, dsahern@...il.com,
	Caspar Zhang <czhang@...hat.com>
Subject: [PATCHv3 0/5] perf, tool: Fix endian issues

hi,
sending fixies to properly handle perf.data endians.

v3 changes:
  - added patch 5 to fix addons bitmask handling

v2 changes:
  - added patches 3 and 4 to handle sample_id_all header endianity


Attached patches:
  1/5 perf, tool: Handle different endians properly during symbol load
  2/5 perf, tool: Carry perf_event_attr bitfield throught different endians
  3/5 perf, tool: Handle endianity swap on sample_id_all header data
  4/5 perf, tool: Fix 32 bit values endianity swap for sample_id_all header
  5/5 perf, tool: Fix endianity trick for adds_features bitmask


Tested by running following usecase:
  - origin system:
    # perf record -a -- sleep 10 (any perf record will do)
    # perf report > report.origin
    # perf archive perf.data
    
  - copy the perf.data, report.origin and perf.data.tar.bz2
    to a target system and run:
    # tar xjvf perf.data.tar.bz2 -C ~/.debug
    # perf report > report.target
    # diff -u report.origin report.target
    
  - the diff should produce no output
    (besides some white space stuff and possibly different
     date/TZ output)

Tested by above usecase cross following architectures:
  i386, x86_64, s390x, ppc64

Big thank to Caspar Zhang who verified this within RH QE testsuites.

thanks,
jirka

CC: Caspar Zhang <czhang@...hat.com>
---
 tools/perf/util/evsel.c                |   32 ++++++++--
 tools/perf/util/header.c               |   20 +++++--
 tools/perf/util/include/linux/bitops.h |    1 +
 tools/perf/util/session.c              |  101 ++++++++++++++++++++++++++++----
 tools/perf/util/symbol.c               |   33 ++++++++++-
 tools/perf/util/symbol.h               |   30 +++++++++
 6 files changed, 192 insertions(+), 25 deletions(-)
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