From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751948AbdFPT0s (ORCPT ); Fri, 16 Jun 2017 15:26:48 -0400 Received: from mail.kernel.org ([198.145.29.99]:36870 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751763AbdFPT0q (ORCPT ); Fri, 16 Jun 2017 15:26:46 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9589121482 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=acme@kernel.org From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, Arnaldo Carvalho de Melo , Adrian Hunter , Alexander Shishkin , Andi Kleen , David Ahern , Eugeniu Rosca , Hendrik Brueckner , Jan Kratochvil , Jan Stancek , Jiada Wang , Jiri Olsa , Masami Hiramatsu , Milian Wolff , Namhyung Kim , Peter Zijlstra , Ravi Bangoria , Rui Teng , Sukadev Bhattiprolu , Wang Nan , Arnaldo Carvalho de Melo Subject: [GIT PULL 0/3] perf/urgent fixes Date: Fri, 16 Jun 2017 16:26:32 -0300 Message-Id: <20170616192635.14535-1-acme@kernel.org> X-Mailer: git-send-email 2.9.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Ingo, Please consider pulling, - Arnaldo Test results at the end of this message, as usual. The following changes since commit 63f700aab4c11d46626de3cd051dae56cf7e9056: Merge tag 'xtensa-20170612' of git://github.com/jcmvbkbc/linux-xtensa (2017-06-13 15:09:10 +0900) are available in the git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-urgent-for-mingo-4.12-20170616 for you to fetch changes up to 9126cbbacecb8917bd0418809ef1d26616b2061e: perf unwind: Report module before querying isactivation in dwfl unwind (2017-06-16 14:37:30 -0300) ---------------------------------------------------------------- perf/urgent fixes: - Fix probing of precise_ip level for default cycles event, that got broken recently on x86_64 when its arch code started considering invalid requesting precise samples when not sampling (i.e. when attr.sample_period == 0). This also fixes another problem in s/390 where the precision probing with sample_period == 0 returned precise_ip > 0, that then, when setting up the real cycles event (not probing) would return EOPNOTSUPP for precise_ip > 0 (as determined previously by probing) and sample_period > 0. These problems resulted in attr_precise not being set to the highest precision available on x86.64 when no event was specified, i.e. the canonical: perf record ./workload would end up using attr.precise_ip = 0. As a workaround this would need to be done: perf record -e cycles:P ./workload And on s/390 it would plain not work, requiring using: perf record -e cycles ./workload as a workaround. (Arnaldo Carvalho de Melo) - Fix perf build with ARCH=x86_64, when ARCH should be transformed into ARCH=x86, just like with the main kernel Makefile and tools/objtool's, i.e. use SRCARCH. (Jiada Wang) - Avoid accessing uninitialized data structures when unwinding with elfutils's libdw, making it more closely mimic libunwind's unwinder. (Milian Wolff) Signed-off-by: Arnaldo Carvalho de Melo ---------------------------------------------------------------- Arnaldo Carvalho de Melo (1): perf evsel: Fix probing of precise_ip level for default cycles event Jiada Wang (1): perf tools: Fix build with ARCH=x86_64 Milian Wolff (1): perf unwind: Report module before querying isactivation in dwfl unwind tools/perf/Makefile.config | 38 +++++++++++++++++++------------------- tools/perf/Makefile.perf | 2 +- tools/perf/arch/Build | 2 +- tools/perf/pmu-events/Build | 4 ++-- tools/perf/tests/Build | 2 +- tools/perf/tests/task-exit.c | 2 +- tools/perf/util/evsel.c | 12 ++++++++++++ tools/perf/util/header.c | 2 +- tools/perf/util/unwind-libdw.c | 8 ++++++++ 9 files changed, 46 insertions(+), 26 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. Where clang is available, it is also used to build perf with/without libelf. 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 alpine:3.5: Ok 3 alpine:3.6: Ok 4 alpine:edge: Ok 5 android-ndk:r12b-arm: Ok 6 archlinux:latest: Ok 7 centos:5: Ok 8 centos:6: Ok 9 centos:7: Ok 10 debian:7: Ok 11 debian:8: Ok 12 debian:9: Ok 13 debian:experimental: Ok 14 debian:experimental-x-arm64: Ok 15 debian:experimental-x-mips: Ok 16 debian:experimental-x-mips64: Ok 17 debian:experimental-x-mipsel: Ok 18 fedora:20: Ok 19 fedora:21: Ok 20 fedora:22: Ok 21 fedora:23: Ok 22 fedora:24: Ok 23 fedora:24-x-ARC-uClibc: Ok 24 fedora:25: Ok 25 fedora:rawhide: Ok 26 mageia:5: Ok 27 opensuse:13.2: Ok 28 opensuse:42.1: Ok 29 opensuse:tumbleweed: Ok 30 ubuntu:12.04.5: Ok 31 ubuntu:14.04.4: Ok 32 ubuntu:14.04.4-x-linaro-arm64: Ok 33 ubuntu:15.10: Ok 34 ubuntu:16.04: Ok 35 ubuntu:16.04-x-arm: Ok 36 ubuntu:16.04-x-arm64: Ok 37 ubuntu:16.04-x-powerpc: Ok 38 ubuntu:16.04-x-powerpc64: Ok 39 ubuntu:16.04-x-powerpc64el: Ok 40 ubuntu:16.04-x-s390: Ok 41 ubuntu:16.10: Ok 42 ubuntu:17.04: Ok # # uname -a Linux jouet 4.12.0-rc4+ #1 SMP Fri Jun 9 12:59:23 -03 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: Simple expression parser : Ok 7: PERF_RECORD_* events & perf_sample fields : Ok 8: Parse perf pmu format : Ok 9: DSO data read : Ok 10: DSO data cache : Ok 11: DSO data reopen : Ok 12: Roundtrip evsel->name : Ok 13: Parse sched tracepoints fields : Ok 14: syscalls:sys_enter_openat event fields : Ok 15: Setup struct perf_event_attr : Ok 16: Match and link multiple hists : Ok 17: 'import perf' in python : Ok 18: Breakpoint overflow signal handler : Ok 19: Breakpoint overflow sampling : Ok 20: Number of exit events of a simple workload : Ok 21: Software clock events period values : Ok 22: Object code reading : Ok 23: Sample parsing : Ok 24: Use a dummy software event to keep tracking: Ok 25: Parse with no sample_id_all bit set : Ok 26: Filter hist entries : Ok 27: Lookup mmap thread : Ok 28: Share thread mg : Ok 29: Sort output of hist entries : Ok 30: Cumulate child hist entries : Ok 31: Track with sched_switch : Ok 32: Filter fds with revents mask in a fdarray : Ok 33: Add fd to a fdarray, making it autogrow : Ok 34: kmod_path__parse : Ok 35: Thread map : Ok 36: LLVM search and compile : 36.1: Basic BPF llvm compile : Ok 36.2: kbuild searching : Ok 36.3: Compile source for BPF prologue generation: Ok 36.4: Compile source for BPF relocation : Ok 37: Session topology : Ok 38: BPF filter : 38.1: Basic BPF filtering : Ok 38.2: BPF pinning : Ok 38.3: BPF prologue generation : Ok 38.4: BPF relocation checker : Ok 39: Synthesize thread map : Ok 40: Remove thread map : Ok 41: Synthesize cpu map : Ok 42: Synthesize stat config : Ok 43: Synthesize stat : Ok 44: Synthesize stat round : Ok 45: Synthesize attr update : Ok 46: Event times : Ok 47: Read backward ring buffer : Ok 48: Print cpu map : Ok 49: Probe SDT events : Ok 50: is_printable_array : Ok 51: Print bitmap : Ok 52: perf hooks : Ok 53: builtin clang support : Skip (not compiled in) 54: unit_number__scnprintf : Ok 55: x86 rdpmc : Ok 56: Convert perf time to TSC : Ok 57: DWARF unwind : Ok 58: x86 instruction decoder - new instructions : Ok 59: Intel cqm nmi context read : Skip # $ make -C tools/perf build-test make: Entering directory '/home/acme/git/linux/tools/perf' - tarpkg: ./tests/perf-targz-src-pkg . - /home/acme/git/linux/tools/perf/BUILD_TEST_FEATURE_DUMP: make FEATURE_DUMP_COPY=/home/acme/git/linux/tools/perf/BUILD_TEST_FEATURE_DUMP feature-dump make_no_demangle_O: make NO_DEMANGLE=1 make_pure_O: make make_no_backtrace_O: make NO_BACKTRACE=1 make_no_auxtrace_O: make NO_AUXTRACE=1 make_install_O: make install make_no_libunwind_O: make NO_LIBUNWIND=1 make_no_libpython_O: make NO_LIBPYTHON=1 make_doc_O: make doc make_no_libbionic_O: make NO_LIBBIONIC=1 make_no_gtk2_O: make NO_GTK2=1 make_no_libperl_O: make NO_LIBPERL=1 make_no_libbpf_O: make NO_LIBBPF=1 make_with_clangllvm_O: make LIBCLANGLLVM=1 make_no_libaudit_O: make NO_LIBAUDIT=1 make_install_prefix_O: make install prefix=/tmp/krava make_util_map_o_O: make util/map.o make_debug_O: make DEBUG=1 make_clean_all_O: make clean all make_no_scripts_O: make NO_LIBPYTHON=1 NO_LIBPERL=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_no_libnuma_O: make NO_LIBNUMA=1 make_install_prefix_slash_O: make install prefix=/tmp/krava/ make_no_slang_O: make NO_SLANG=1 make_no_libdw_dwarf_unwind_O: make NO_LIBDW_DWARF_UNWIND=1 make_perf_o_O: make perf.o make_tags_O: make tags make_util_pmu_bison_o_O: make util/pmu-bison.o make_with_babeltrace_O: make LIBBABELTRACE=1 make_help_O: make help make_no_ui_O: make NO_NEWT=1 NO_SLANG=1 NO_GTK2=1 make_install_bin_O: make install-bin make_no_newt_O: make NO_NEWT=1 make_static_O: make LDFLAGS=-static make_no_libelf_O: make NO_LIBELF=1 OK make: Leaving directory '/home/acme/git/linux/tools/perf' $