Re: [GIT PULL 00/10] perf/core improvements and fixes

[Ingo Molnar]

* Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> wrote:

> Hi Ingo,
> 
> 	Please consider pulling, should get linux-next free of perf build fixdep
> related race conditions on high core count machines,
> 
> - Arnaldo
> 
> Test results at the end of this message, as usual.
> 
> The following changes since commit 34c4a42791bbc455e65a15d12dcd0b6b3c52ad13:
> 
>   Merge tag 'perf-core-for-mingo-20161205' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core (2016-12-06 09:14:56 +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-20161207
> 
> for you to fetch changes up to 108a7c103b761309ccbd997002e8428808cf1e04:
> 
>   perf tools: Explicitly document that --children is enabled by default (2016-12-07 12:00:35 -0300)
> 
> ----------------------------------------------------------------
> perf/core improvements and fixes:
> 
> Improvements:
> 
> - Improve error message when analyzing file with required events in
>   'perf sched timehist' (David Ahern)
> 
> Fixes:
> 
> - Force fixdep compilation to be done at the start of the build, fixing
>   some build race conditions in high core count machines (Jiri Olsa)
> 
> - Fix handling a zero sample->tid in 'perf sched timehist', as
>   sometimes that isn't the idle thread (Namhyung Kim)
> 
> Infrastructure:
> 
> - Check minimal accepted LLVM version in its feature check, 3.9 at this
>   time (Wang Nan)
> 
> Documentation:
> 
> - Explicitly document that --children is enabled by default (Yannick Brosseau)
> 
> Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
> 
> ----------------------------------------------------------------
> David Ahern (1):
>       perf sched timehist: Improve error message when analyzing wrong file
> 
> Jiri Olsa (3):
>       perf tools: Move PERF-VERSION-FILE target into rules area
>       perf tools: Force fixdep compilation at the start of the build
>       perf tools: Move perf build related variables under non fixdep leg
> 
> Namhyung Kim (4):
>       perf sched: Cleanup option processing
>       perf callchain: Introduce callchain_cursor__copy()
>       perf sched timehist: Handle zero sample->tid properly
>       perf sched timehist: Cleanup idle_max_cpu handling
> 
> Wang Nan (1):
>       perf build: Check LLVM version in feature check
> 
> Yannick Brosseau (1):
>       perf tools: Explicitly document that --children is enabled by default
> 
>  tools/build/feature/Makefile              |  8 +++-
>  tools/build/feature/test-llvm-version.cpp | 11 +++++
>  tools/build/feature/test-llvm.cpp         |  5 +++
>  tools/perf/Documentation/perf-report.txt  |  3 +-
>  tools/perf/Documentation/perf-top.txt     |  1 +
>  tools/perf/Makefile.config                |  8 +++-
>  tools/perf/Makefile.perf                  | 68 +++++++++++++++++++++----------
>  tools/perf/builtin-sched.c                | 26 ++++++------
>  tools/perf/util/callchain.c               | 27 ++++++++++++
>  tools/perf/util/callchain.h               |  3 ++
>  10 files changed, 122 insertions(+), 38 deletions(-)
>  create mode 100644 tools/build/feature/test-llvm-version.cpp
> 
>   # uname -a
>   Linux jouet 4.8.8-300.fc25.x86_64 #1 SMP Tue Nov 15 18:10:06 UTC 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: Synthesize cpu map                         : Ok
>   40: Synthesize stat config                     : Ok
>   41: Synthesize stat                            : Ok
>   42: Synthesize stat round                      : Ok
>   43: Synthesize attr update                     : Ok
>   44: Event times                                : Ok
>   45: Read backward ring buffer                  : Ok
>   46: Print cpu map                              : Ok
>   47: Probe SDT events                           : Ok
>   48: is_printable_array                         : Ok
>   49: Print bitmap                               : Ok
>   50: perf hooks                                 : Ok
>   51: builtin clang support                      :
>   51.1: builtin clang compile C source to IR        : Ok
>   51.2: builtin clang compile C source to ELF object: Ok
>   52: x86 rdpmc                                  : Ok
>   53: Convert perf time to TSC                   : Ok
>   54: DWARF unwind                               : Ok
>   55: x86 instruction decoder - new instructions : Ok
>   56: Intel cqm nmi context read                 : Skip
>   # 
>   # uname -a
>   Linux zoo 4.7.3-200.fc24.x86_64 #1 SMP Wed Sep 7 17:31:21 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
>   # time 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 fedora:20: Ok
>   11 fedora:21: Ok
>   12 fedora:22: Ok
>   13 fedora:23: Ok
>   14 fedora:24: Ok
>   15 fedora:24-x-ARC-uClibc: Ok
>   16 fedora:rawhide: Ok
>   17 mageia:5: Ok
>   18 opensuse:13.2: Ok
>   19 opensuse:42.1: Ok
>   20 opensuse:tumbleweed: Ok
>   21 ubuntu:12.04.5: Ok
>   22 ubuntu:14.04: Ok
>   23 ubuntu:14.04.4: Ok
>   24 ubuntu:15.10: Ok
>   25 ubuntu:16.04: Ok
>   26 ubuntu:16.04-x-arm: Ok
>   27 ubuntu:16.04-x-arm64: Ok
>   28 ubuntu:16.04-x-powerpc: Ok
>   29 ubuntu:16.04-x-powerpc64: Ok
>   30 ubuntu:16.04-x-powerpc64el: Ok
>   31 ubuntu:16.04-x-s390: Ok
>   32 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_no_ui_O: make NO_NEWT=1 NO_SLANG=1 NO_GTK2=1
>                    make_help_O: make help
>    make_install_prefix_slash_O: make install prefix=/tmp/krava/
>                 make_install_O: make install
>                  make_static_O: make LDFLAGS=-static
>            make_no_libbionic_O: make NO_LIBBIONIC=1
>            make_no_backtrace_O: make NO_BACKTRACE=1
>            make_no_libunwind_O: make NO_LIBUNWIND=1
>                 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_doc_O: make doc
>               make_no_libbpf_O: make NO_LIBBPF=1
>              make_util_map_o_O: make util/map.o
>             make_install_bin_O: make install-bin
>             make_no_auxtrace_O: make NO_AUXTRACE=1
>         make_with_babeltrace_O: make LIBBABELTRACE=1
>          make_with_clangllvm_O: make LIBCLANGLLVM=1
>                   make_debug_O: make DEBUG=1
>               make_no_libelf_O: make NO_LIBELF=1
>               make_clean_all_O: make clean all
>              make_no_libperl_O: make NO_LIBPERL=1
>             make_no_libaudit_O: make NO_LIBAUDIT=1
>                make_no_slang_O: make NO_SLANG=1
>        make_util_pmu_bison_o_O: make util/pmu-bison.o
>                 make_no_gtk2_O: make NO_GTK2=1
>                    make_pure_O: make
>              make_no_scripts_O: make NO_LIBPYTHON=1 NO_LIBPERL=1
>          make_install_prefix_O: make install prefix=/tmp/krava
>                    make_tags_O: make tags
>             make_no_demangle_O: make NO_DEMANGLE=1
>                  make_perf_o_O: make perf.o
>   make_no_libdw_dwarf_unwind_O: make NO_LIBDW_DWARF_UNWIND=1
>              make_no_libnuma_O: make NO_LIBNUMA=1
>            make_no_libpython_O: make NO_LIBPYTHON=1
>                 make_no_newt_O: make NO_NEWT=1
>   OK
>   make: Leaving directory '/home/acme/git/linux/tools/perf'
>   $ 

Pulled, thanks a lot Arnaldo!

	Ingo