[GIT PULL 00/19] perf/core improvements and fixes

[Arnaldo Carvalho de Melo <acme@kernel.org>]

Hi Ingo,

	Please consider pulling,

- Arnaldo

The following changes since commit 36e674a05164cdbb9d4a5b1b0b279fabae6c13bd:

  Merge tag 'perf-core-for-mingo-20160823' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core (2016-08-24 11:08:10 +0200)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo-20160901

for you to fetch changes up to 6243b9dc4c991fe8bdc53a0e029908aef3ddb101:

  perf probe: Move dwarf specific functions to dwarf-aux.c (2016-09-01 12:42:26 -0300)

----------------------------------------------------------------
perf/core improvements and fixes:

User visible:

- Support generating cross arch probes, i.e. if you specify a vmlinux
  file for different arch than the one in the host machine,

	 $ perf probe --definition function_name args

  will generate the probe definition string needed to append to the
  target machine /sys/kernel/debug/tracing/kprobes_events file, using
  scripting (Masami Hiramatsu).

- Make 'perf probe' skip the function prologue in uprobes if program
  compiled without optimization, using the same strategy as gdb and
  systemtap uses, fixing a bug where:

	$ perf probe -x ./test 'foo i'

  When 'foo(42)' was used on the "./test" executable would produce i=0
  instead of the expected i=42 (Ravi Bangoria)

- Demangle symbols for synthesized @plt entries too (Millian Wolff)

Documentation:

- Show default report configuration in 'perf config' example
  and docs (Millian Wolff)

Infrastructure:

- Make 'perf test vmlinux' tolerate the symbol aliasing pruning done when
  loading kallsyms and vmlinux (Arnaldo Carvalho de Melo)

- Improve output of 'perf test vmlinux' test, to help identify on the verbose
  output which lines are warning and which are errors (Arnaldo Carvalho de Melo)

- Prep work to stop having to pass symbol_filter_t to lots of functions,
  simplifying symtab loading routines (Arnaldo Carvalho de Melo)

- Honor symbol_conf.allow_aliases when loading kallsyms as well, it was using
  it only when loading vmlinux files (Arnaldo Carvalho de Melo)

- Fixup symbol->end before doing alias pruning when loading symbol tables
  (Arnaldo Carvalho de Melo)

- Fix error handling of lzma kernel module decompression (Shawn Lin)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

----------------------------------------------------------------
Arnaldo Carvalho de Melo (8):
      perf annotate: Initialize the priv are in symbol__new()
      perf symbols: Rename ->ignore to ->idle
      perf probe: Do not use map_load filters for function
      perf test vmlinux: Clarify which -v lines are errors or warning
      perf test vmlinux: Avoid printing headers for empty lists
      perf test vmlinux: Tolerate symbol aliases
      perf symbols: Check symbol_conf.allow_aliases for kallsyms loading too
      perf symbols: Fixup symbol sizes before picking best ones

Masami Hiramatsu (5):
      perf probe: Remove unused tracing_dir variable
      perf probe: Show trace event definition
      perf probe: Ignore vmlinux buildid if offline kernel is given
      perf probe: Support probing on offline cross-arch binary
      perf probe: Ignore vmlinux Build-id when offline vmlinux given

Milian Wolff (2):
      perf symbols: Demangle symbols for synthesized @plt entries.
      perf config: Show default report configuration in example and docs

Ravi Bangoria (3):
      perf probe: Add helper function to check if probe with variable
      perf uprobe: Skip prologue if program compiled without optimization
      perf probe: Move dwarf specific functions to dwarf-aux.c

Shawn Lin (1):
      perf tools: Fix error handling of lzma decompression

 tools/perf/Documentation/perf-config.txt           |   8 +
 tools/perf/Documentation/perf-probe.txt            |   9 ++
 tools/perf/Documentation/perfconfig.example        |   9 ++
 tools/perf/arch/arm/include/dwarf-regs-table.h     |   9 ++
 tools/perf/arch/arm64/include/dwarf-regs-table.h   |  13 ++
 tools/perf/arch/powerpc/include/dwarf-regs-table.h |  27 ++++
 tools/perf/arch/s390/include/dwarf-regs-table.h    |   8 +
 tools/perf/arch/sh/include/dwarf-regs-table.h      |  25 +++
 tools/perf/arch/sparc/include/dwarf-regs-table.h   |  18 +++
 tools/perf/arch/x86/include/dwarf-regs-table.h     |  14 ++
 tools/perf/arch/xtensa/include/dwarf-regs-table.h  |   8 +
 tools/perf/builtin-annotate.c                      |   7 +-
 tools/perf/builtin-probe.c                         |  35 +++-
 tools/perf/builtin-report.c                        |   6 +-
 tools/perf/builtin-top.c                           |   8 +-
 tools/perf/tests/vmlinux-kallsyms.c                |  44 +++--
 tools/perf/util/Build                              |   1 +
 tools/perf/util/annotate.c                         |   7 -
 tools/perf/util/annotate.h                         |   1 -
 tools/perf/util/dwarf-aux.c                        | 179 +++++++++++++++++++++
 tools/perf/util/dwarf-aux.h                        |   8 +
 tools/perf/util/dwarf-regs.c                       |  59 +++++++
 tools/perf/util/evsel_fprintf.c                    |   4 +-
 tools/perf/util/include/dwarf-regs.h               |   6 +
 tools/perf/util/lzma.c                             |  15 +-
 tools/perf/util/probe-event.c                      | 101 +++++++++---
 tools/perf/util/probe-event.h                      |   3 +
 tools/perf/util/probe-file.c                       |   5 +-
 tools/perf/util/probe-finder.c                     |  60 +++++--
 tools/perf/util/probe-finder.h                     |   1 +
 tools/perf/util/symbol-elf.c                       |  86 ++++++----
 tools/perf/util/symbol.c                           |  30 +++-
 tools/perf/util/symbol.h                           |   5 +-
 33 files changed, 698 insertions(+), 121 deletions(-)
 create mode 100644 tools/perf/arch/arm/include/dwarf-regs-table.h
 create mode 100644 tools/perf/arch/arm64/include/dwarf-regs-table.h
 create mode 100644 tools/perf/arch/powerpc/include/dwarf-regs-table.h
 create mode 100644 tools/perf/arch/s390/include/dwarf-regs-table.h
 create mode 100644 tools/perf/arch/sh/include/dwarf-regs-table.h
 create mode 100644 tools/perf/arch/sparc/include/dwarf-regs-table.h
 create mode 100644 tools/perf/arch/x86/include/dwarf-regs-table.h
 create mode 100644 tools/perf/arch/xtensa/include/dwarf-regs-table.h
 create mode 100644 tools/perf/util/dwarf-regs.c

Build stats:

  1 alpine:3.4: Ok
  2 android-ndk:r12b-arm: Ok
  3 archlinux:latest: Ok
  4 centos:5: Ok
  5 centos:6: Ok
  6 centos:7: Ok
  7 debian:7: Ok
  8 debian:8: Ok
  9 fedora:20: Ok
 10 fedora:21: Ok
 11 fedora:22: Ok
 12 fedora:23: Ok
 13 fedora:24: Ok
 14 fedora:24-x-ARC-uClibc: Ok
 15 fedora:rawhide: Ok
 16 mageia:5: Ok
 17 opensuse:13.2: Ok
 18 opensuse:42.1: Ok
 19 opensuse:tumbleweed: Ok
 20 ubuntu:12.04.5: Ok
 21 ubuntu:14.04.4: Ok
 22 ubuntu:15.10: Ok
 23 ubuntu:16.04: Ok
 24 ubuntu:16.04-x-arm: Ok
 25 ubuntu:16.04-x-arm64: Ok
 26 ubuntu:16.04-x-powerpc64: Ok
 27 ubuntu:16.04-x-powerpc64el: Ok
 28 ubuntu:16.10: Ok
 29 ubuntu:16.10-x-s390: Ok