[GIT PULL 00/14] perf/core improvements and fixes

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

Hi Ingo,

	Please consider pulling,

- Arnaldo

Test results at the end of this message, as usual.

The following changes since commit e2cf00c257f5bbc071b489b1dfbeaa30b6f12da6:

  Merge tag 'perf-core-for-mingo-4.11-20170126' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core (2017-01-26 16:20:59 +0100)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo-4.11-20170201

for you to fetch changes up to b05d1093987a78695766b71a2d723aa65b5c25c5:

  perf ftrace: Add ftrace.tracer config option (2017-01-31 16:20:09 -0300)

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

New features:

. Allow configuring a 'perf ftrace' default --tracer (Taeung Song)

Infrastructure:

. Sync tools/arch/{powerpc,arm}/include/uapi/asm/kvm.h and
       tools/arch/x86/include/asm/cpufeatures.h (Ingo Molnar)

. Add BPF program file system pinning APIs and respective
  'perf test' entry (Joe Stringer)

. Make tools tree support 'make -s' (Josh Poimboeuf)

. Reference count maps in callchains, fixing SEGFAULT when
  referencing maps after it is freed (Krister Johansen)

. Create for_each_event trace points iterator (Taeung Song)

. Do not consider an error not to have any perfconfig file
  (Arnaldo Carvalho de Melo

. Propagate perf_config() errors (Arnaldo Carvalho de Melo)

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

----------------------------------------------------------------
Arnaldo Carvalho de Melo (2):
      perf config: Do not consider an error not to have any perfconfig file
      perf tools: Propagate perf_config() errors

Ingo Molnar (1):
      tools headers: Sync {tools/,}arch/powerpc/include/uapi/asm/kvm.h, {tools/,}arch/x86/include/asm/cpufeatures.h and {tools/,}arch/arm/include/uapi/asm/kvm.h

Joe Stringer (6):
      tools lib bpf: Add BPF program pinning APIs
      tools lib bpf: Add bpf_map__pin()
      tools lib bpf: Add bpf_object__pin()
      tools perf util: Make rm_rf(path) argument const
      tools lib api fs: Add bpf_fs filesystem detector
      perf test: Add libbpf pinning test

Josh Poimboeuf (1):
      tools build: Add tools tree support for 'make -s'

Krister Johansen (1):
      perf callchain: Reference count maps

Taeung Song (3):
      perf ftrace: Remove needless code setting default tracer
      perf tools: Create for_each_event macro for tracepoints iteration
      perf ftrace: Add ftrace.tracer config option

 Makefile                                  |   6 +-
 tools/arch/arm/include/uapi/asm/kvm.h     |   9 ++
 tools/arch/powerpc/include/uapi/asm/kvm.h |   5 +
 tools/arch/x86/include/asm/cpufeatures.h  |  11 ++
 tools/build/Makefile.build                |  10 ++
 tools/lib/api/fs/fs.c                     |  16 +++
 tools/lib/api/fs/fs.h                     |   1 +
 tools/lib/bpf/libbpf.c                    | 195 ++++++++++++++++++++++++++++++
 tools/lib/bpf/libbpf.h                    |   5 +
 tools/perf/builtin-ftrace.c               |  30 ++++-
 tools/perf/builtin-help.c                 |   6 +-
 tools/perf/builtin-kmem.c                 |   8 +-
 tools/perf/builtin-record.c               |   4 +-
 tools/perf/builtin-report.c               |   4 +-
 tools/perf/builtin-top.c                  |   4 +-
 tools/perf/perf.c                         |  15 ++-
 tools/perf/tests/bpf.c                    |  42 ++++++-
 tools/perf/util/callchain.c               |  27 ++++-
 tools/perf/util/callchain.h               |   6 +
 tools/perf/util/config.c                  |  23 ++--
 tools/perf/util/data-convert-bt.c         |   7 +-
 tools/perf/util/hist.c                    |  11 +-
 tools/perf/util/intel-pt.c                |   4 +-
 tools/perf/util/llvm-utils.c              |   4 +-
 tools/perf/util/trace-event-info.c        |  38 +++---
 tools/perf/util/util.c                    |   2 +-
 tools/perf/util/util.h                    |   2 +-
 tools/scripts/Makefile.include            |  12 +-
 28 files changed, 446 insertions(+), 61 deletions(-)

Test results:

The first ones are container (docker) based builds of tools/perf with and
without libelf support, objtool where it is supported and samples/bpf/, ditto.

Several are cross builds, the ones with -x-ARCH, and the android one, and those
may not have all the features built, due to lack of multi-arch devel packages,
available and being used so far on just a few, like
debian:experimental-x-{arm64,mipsel}.

The 'perf test' one will perform a variety of tests exercising
tools/perf/util/, tools/lib/{bpf,traceevent,etc}, as well as run perf commands
with a variety of command line event specifications to then intercept the
sys_perf_event syscall to check that the perf_event_attr fields are set up as
expected, among a variety of other unit tests.

Then there is the 'make -C tools/perf build-test' ones, that build tools/perf/
with a variety of feature sets, exercising the build with an incomplete set of
features as well as with a complete one. It is planned to have it run on each
of the containers mentioned above, using some container orchestration
infrastructure. Get in contact if interested in helping having this in place.

  # dm
   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 debian:experimental: Ok
  10 debian:experimental-x-arm64: Ok
  11 debian:experimental-x-mips: Ok
  12 debian:experimental-x-mips64: Ok
  13 debian:experimental-x-mipsel: Ok
  14 fedora:20: Ok
  15 fedora:21: Ok
  16 fedora:22: Ok
  17 fedora:23: Ok
  18 fedora:24: Ok
  19 fedora:24-x-ARC-uClibc: Ok
  20 fedora:25: Ok
  21 fedora:rawhide: Ok
  22 mageia:5: Ok
  23 opensuse:13.2: Ok
  24 opensuse:42.1: Ok
  25 opensuse:tumbleweed: Ok
  26 ubuntu:12.04.5: Ok
  27 ubuntu:14.04.4-x-linaro-arm64: Ok
  28 ubuntu:15.10: Ok
  29 ubuntu:16.04: Ok
  30 ubuntu:16.04-x-arm: Ok
  31 ubuntu:16.04-x-arm64: Ok
  32 ubuntu:16.04-x-powerpc: Ok
  33 ubuntu:16.04-x-powerpc64: Ok
  34 ubuntu:16.04-x-powerpc64el: Ok
  35 ubuntu:16.04-x-s390: Ok
  36 ubuntu:16.10: Ok
  #

  # uname -a
  Linux jouet 4.9.6-200.fc25.x86_64 #1 SMP Thu Jan 26 10:17:45 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
  # perf test
   1: vmlinux symtab matches kallsyms            : Ok
   2: Detect openat syscall event                : Ok
   3: Detect openat syscall event on all cpus    : Ok
   4: Read samples using the mmap interface      : Ok
   5: Parse event definition strings             : Ok
   6: PERF_RECORD_* events & perf_sample fields  : Ok
   7: Parse perf pmu format                      : Ok
   8: DSO data read                              : Ok
   9: DSO data cache                             : Ok
  10: DSO data reopen                            : Ok
  11: Roundtrip evsel->name                      : Ok
  12: Parse sched tracepoints fields             : Ok
  13: syscalls:sys_enter_openat event fields     : Ok
  14: Setup struct perf_event_attr               : Ok
  15: Match and link multiple hists              : Ok
  16: 'import perf' in python                    : Ok
  17: Breakpoint overflow signal handler         : Ok
  18: Breakpoint overflow sampling               : Ok
  19: Number of exit events of a simple workload : Ok
  20: Software clock events period values        : Ok
  21: Object code reading                        : Ok
  22: Sample parsing                             : Ok
  23: Use a dummy software event to keep tracking: Ok
  24: Parse with no sample_id_all bit set        : Ok
  25: Filter hist entries                        : Ok
  26: Lookup mmap thread                         : Ok
  27: Share thread mg                            : Ok
  28: Sort output of hist entries                : Ok
  29: Cumulate child hist entries                : Ok
  30: Track with sched_switch                    : Ok
  31: Filter fds with revents mask in a fdarray  : Ok
  32: Add fd to a fdarray, making it autogrow    : Ok
  33: kmod_path__parse                           : Ok
  34: Thread map                                 : Ok
  35: LLVM search and compile                    :
  35.1: Basic BPF llvm compile                    : Ok
  35.2: kbuild searching                          : Ok
  35.3: Compile source for BPF prologue generation: Ok
  35.4: Compile source for BPF relocation         : Ok
  36: Session topology                           : Ok
  37: BPF filter                                 :
  37.1: Basic BPF filtering                      : Ok
  37.2: BPF pinning                              : Ok
  37.3: BPF prologue generation                  : Ok
  37.4: BPF relocation checker                   : Ok
  38: Synthesize thread map                      : Ok
  39: Remove thread map                          : Ok
  40: Synthesize cpu map                         : Ok
  41: Synthesize stat config                     : Ok
  42: Synthesize stat                            : Ok
  43: Synthesize stat round                      : Ok
  44: Synthesize attr update                     : Ok
  45: Event times                                : Ok
  46: Read backward ring buffer                  : Ok
  47: Print cpu map                              : Ok
  48: Probe SDT events                           : Ok
  49: is_printable_array                         : Ok
  50: Print bitmap                               : Ok
  51: perf hooks                                 : Ok
  52: builtin clang support                      : Skip (not compiled in)
  53: unit_number__scnprintf                     : Ok
  54: x86 rdpmc                                  : Ok
  55: Convert perf time to TSC                   : Ok
  56: DWARF unwind                               : Ok
  57: x86 instruction decoder - new instructions : Ok
  58: Intel cqm nmi context read                 : Skip
  
  $ perf stat make -C tools/perf build-test
  make: Entering directory '/home/acme/git/linux/tools/perf'
  - tarpkg: ./tests/perf-targz-src-pkg .
         make_with_clangllvm_O: make LIBCLANGLLVM=1
                  make_debug_O: make DEBUG=1
   make_install_prefix_slash_O: make install prefix=/tmp/krava/
                    make_doc_O: make doc
  make_no_libdw_dwarf_unwind_O: make NO_LIBDW_DWARF_UNWIND=1
           make_no_libpython_O: make NO_LIBPYTHON=1
               make_no_slang_O: make NO_SLANG=1
              make_clean_all_O: make clean all
             make_no_libperl_O: make NO_LIBPERL=1
         make_install_prefix_O: make install prefix=/tmp/krava
                   make_help_O: make help
            make_no_auxtrace_O: make NO_AUXTRACE=1
                   make_tags_O: make tags
                 make_perf_o_O: make perf.o
                make_minimal_O: make NO_LIBPERL=1 NO_LIBPYTHON=1 NO_NEWT=1 NO_GTK2=1 NO_DEMANGLE=1 NO_LIBELF=1 NO_LIBUNWIND=1 NO_BACKTRACE=1 NO_LIBNUMA=1 NO_LIBAUDIT=1 NO_LIBBIONIC=1 NO_LIBDW_DWARF_UNWIND=1 NO_AUXTRACE=1 NO_LIBBPF=1 NO_LIBCRYPTO=1 NO_SDT=1 NO_JVMTI=1
                  make_no_ui_O: make NO_NEWT=1 NO_SLANG=1 NO_GTK2=1
              make_no_libelf_O: make NO_LIBELF=1
           make_no_libunwind_O: make NO_LIBUNWIND=1
                 make_static_O: make LDFLAGS=-static
             make_no_libnuma_O: make NO_LIBNUMA=1
             make_no_scripts_O: make NO_LIBPYTHON=1 NO_LIBPERL=1
            make_no_demangle_O: make NO_DEMANGLE=1
                make_no_newt_O: make NO_NEWT=1
           make_no_libbionic_O: make NO_LIBBIONIC=1
                   make_pure_O: make
       make_util_pmu_bison_o_O: make util/pmu-bison.o
                make_no_gtk2_O: make NO_GTK2=1
             make_util_map_o_O: make util/map.o
            make_no_libaudit_O: make NO_LIBAUDIT=1
        make_with_babeltrace_O: make LIBBABELTRACE=1
            make_install_bin_O: make install-bin
           make_no_backtrace_O: make NO_BACKTRACE=1
              make_no_libbpf_O: make NO_LIBBPF=1
                make_install_O: make install
  OK
  make: Leaving directory '/home/acme/git/linux/tools/perf'
  $