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Date:   Thu, 22 Dec 2016 23:12:48 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     linux-kernel@...r.kernel.org,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Alexei Starovoitov <ast@...com>,
        Daniel Borkmann <daniel@...earbox.net>,
        David Ahern <dsahern@...il.com>, Jiri Olsa <jolsa@...nel.org>,
        Joe Stringer <joe@....org>, Namhyung Kim <namhyung@...nel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Wang Nan <wangnan0@...wei.com>,
        Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [GIT PULL 0/4] perf/urgent fixes for 'perf sched timehist' and samples/bpf/ testing

Hi Ingo,

	Please consider pulling,

- Arnaldo

P.S.: Some of the container test builds now include building samples/bpf/ with:

  $ make O=/tmp/build/linux allmodconfig
  $ make O=/tmp/build/linux headers_install
  $ make O=/tmp/build/linux samples/bpf/

In distributions having at least clang/llvm 3.8+ with the 'bpf' target.

Examples include debian:experimental, fedora:rawhide and opensuse:tumbleweed,
more to come as I go over rebuilding the containers looking for more suitable
environments.

This will help in finding regressions in this area, now using tools/lib/bpf/.

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

The following changes since commit 1134c2b5cb840409ffd966d8c2a9468f64e6a494:

  perf/x86: Fix overlap counter scheduling bug (2016-12-22 17:45:43 +0100)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-urgent-for-mingo-20161222

for you to fetch changes up to bdd75729e5d279d734e8d3fb41ef4818ac1598ab:

  perf sched timehist: Fix invalid period calculation (2016-12-22 16:35:46 -0300)

----------------------------------------------------------------
perf/urgent fixes:

Fixes for 'perf sched timehist': (Namhyung Kim)

- Define a larger initial alignment value for the COMM column and
  make it be more consistently honoured, for instance in the header.

- Fix invalid period calculation when using the --time option to
  select a time slice, when events outside that slice were being
  considered for the per cpu idle stats summary.

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

----------------------------------------------------------------
Namhyung Kim (4):
      perf sched timehist: Honour 'comm_width' when aligning the headers
      perf sched timehist: Enlarge default 'comm_width'
      perf sched timehist: Remove hardcoded 'comm_width' check at print_summary
      perf sched timehist: Fix invalid period calculation

 tools/perf/builtin-sched.c | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

  # uname -a
  Linux jouet 4.9.0+ #2 SMP Wed Dec 21 11:54:44 BRT 2016 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 prologue generation                  : Ok
  37.3: 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: x86 rdpmc                                  : Ok
  54: Convert perf time to TSC                   : Ok
  55: DWARF unwind                               : Ok
  56: x86 instruction decoder - new instructions : Ok
  57: Intel cqm nmi context read                 : Skip
  # 
  # 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-mips64: Ok
  11 fedora:20: Ok
  12 fedora:21: Ok
  13 fedora:22: Ok
  14 fedora:23: Ok
  15 fedora:24: Ok
  16 fedora:24-x-ARC-uClibc: Ok
  17 fedora:25: Ok
  18 fedora:rawhide: Ok
  19 mageia:5: Ok
  20 opensuse:13.2: Ok
  21 opensuse:42.1: Ok
  22 opensuse:tumbleweed: Ok
  23 ubuntu:12.04.5: Ok
  24 ubuntu:14.04.4-x-linaro-arm64: Ok
  25 ubuntu:15.10: Ok
  26 ubuntu:16.04: Ok
  27 ubuntu:16.04-x-arm: Ok
  28 ubuntu:16.04-x-arm64: Ok
  29 ubuntu:16.04-x-powerpc: Ok
  30 ubuntu:16.04-x-powerpc64: Ok
  31 ubuntu:16.04-x-powerpc64el: Ok
  32 ubuntu:16.04-x-s390: Ok
  33 ubuntu:16.10: Ok
  #
  $ make -C tools/perf build-test
  make: Entering directory '/home/acme/git/linux/tools/perf'
  - tarpkg: ./tests/perf-targz-src-pkg .
                 make_perf_o_O: make perf.o
           make_no_libbionic_O: make NO_LIBBIONIC=1
              make_no_libelf_O: make NO_LIBELF=1
            make_install_bin_O: make install-bin
              make_clean_all_O: make clean all
                   make_pure_O: make
             make_no_libnuma_O: make NO_LIBNUMA=1
           make_no_libunwind_O: make NO_LIBUNWIND=1
         make_install_prefix_O: make install prefix=/tmp/krava
                   make_help_O: make help
        make_with_babeltrace_O: make LIBBABELTRACE=1
                 make_static_O: make LDFLAGS=-static
                  make_debug_O: make DEBUG=1
                   make_tags_O: make tags
                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_backtrace_O: make NO_BACKTRACE=1
                    make_doc_O: make doc
            make_no_libaudit_O: make NO_LIBAUDIT=1
       make_util_pmu_bison_o_O: make util/pmu-bison.o
             make_no_libperl_O: make NO_LIBPERL=1
             make_no_scripts_O: make NO_LIBPYTHON=1 NO_LIBPERL=1
  make_no_libdw_dwarf_unwind_O: make NO_LIBDW_DWARF_UNWIND=1
             make_util_map_o_O: make util/map.o
               make_no_slang_O: make NO_SLANG=1
              make_no_libbpf_O: make NO_LIBBPF=1
                make_no_newt_O: make NO_NEWT=1
            make_no_demangle_O: make NO_DEMANGLE=1
           make_no_libpython_O: make NO_LIBPYTHON=1
   make_install_prefix_slash_O: make install prefix=/tmp/krava/
                make_install_O: make install
            make_no_auxtrace_O: make NO_AUXTRACE=1
                  make_no_ui_O: make NO_NEWT=1 NO_SLANG=1 NO_GTK2=1
                make_no_gtk2_O: make NO_GTK2=1
         make_with_clangllvm_O: make LIBCLANGLLVM=1
  OK
  make: Leaving directory '/home/acme/git/linux/tools/perf'
  $

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