[GIT PULL 0/7] perf/urgent fixes

From: Arnaldo Carvalho de Melo
Date: Wed Nov 21 2018 - 09:25:18 EST


Hi Ingo,

Please consider pulling, more to come as I process the backlog
from being away for LPC.

- Arnaldo

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

The following changes since commit 4d47d6407ac7b4b442a4e717488a3bb137398b6c:

perf/x86/intel/uncore: Support CoffeeLake 8th CBOX (2018-11-12 05:03:26 +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-4.20-20181121

for you to fetch changes up to a4243e1494532ab8fa679a4134153149a71fa331:

perf tools beauty ioctl: Support new ISO7816 commands (2018-11-19 12:38:50 -0800)

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

- Update kernel ABI headers, one of them lead to a small change in
the ioctl 'cmd' beautifier in 'perf trace' to support the new ISO7816
commands. (Arnaldo Carvalho de Melo)

- Restore proper cwd on return from mnt namespace (Jiri Olsa)

- Add feature check for the get_current_dir_name() function used in the
namespace fix from Jiri, that is not available in systems such as
Alpine Linux, which uses the musl libc (Arnaldo Carvalho de Melo)

- Fix crash in 'perf record' when synthesizing the unit for events such
as 'cpu-clock' (Jiri Olsa)

Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>

----------------------------------------------------------------
Arnaldo Carvalho de Melo (5):
tools build feature: Check if get_current_dir_name() is available
tools headers uapi: Synchronize i915_drm.h
tools arch x86: Update tools's copy of cpufeatures.h
tools uapi asm-generic: Synchronize ioctls.h
perf tools beauty ioctl: Support new ISO7816 commands

Jiri Olsa (2):
perf tools: Fix crash on synthesizing the unit
perf tools: Restore proper cwd on return from mnt namespace

tools/arch/x86/include/asm/cpufeatures.h | 2 ++
tools/build/Makefile.feature | 1 +
tools/build/feature/Makefile | 4 ++++
tools/build/feature/test-all.c | 5 +++++
tools/build/feature/test-get_current_dir_name.c | 10 ++++++++++
tools/include/uapi/asm-generic/ioctls.h | 2 ++
tools/include/uapi/drm/i915_drm.h | 22 ++++++++++++++++++++++
tools/perf/Makefile.config | 5 +++++
tools/perf/tests/attr/base-record | 2 +-
tools/perf/trace/beauty/ioctl.c | 1 +
tools/perf/util/Build | 1 +
tools/perf/util/evsel.c | 2 +-
tools/perf/util/get_current_dir_name.c | 18 ++++++++++++++++++
tools/perf/util/namespaces.c | 17 +++++++++++++++--
tools/perf/util/namespaces.h | 1 +
tools/perf/util/util.h | 4 ++++
16 files changed, 93 insertions(+), 4 deletions(-)
create mode 100644 tools/build/feature/test-get_current_dir_name.c
create mode 100644 tools/perf/util/get_current_dir_name.c

Test results:

The first ones are container (docker) based builds of tools/perf with
and without libelf support. Where clang is available, it is also used
to build perf with/without libelf, and building with LIBCLANGLLVM=1
(built-in clang) with gcc and clang when clang and its devel libraries
are installed.

The objtool and samples/bpf/ builds are disabled now that I'm switching from
using the sources in a local volume to fetching them from a http server to
build it inside the container, to make it easier to build in a container cluster.
Those will come back later.

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 gcc (Alpine 5.3.0) 5.3.0
2 alpine:3.5 : Ok gcc (Alpine 6.2.1) 6.2.1 20160822
3 alpine:3.6 : Ok gcc (Alpine 6.3.0) 6.3.0
4 alpine:3.7 : Ok gcc (Alpine 6.4.0) 6.4.0
5 alpine:3.8 : Ok gcc (Alpine 6.4.0) 6.4.0
6 alpine:edge : Ok gcc (Alpine 6.4.0) 6.4.0
7 amazonlinux:1 : Ok gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-28)
8 amazonlinux:2 : Ok gcc (GCC) 7.3.1 20180303 (Red Hat 7.3.1-5)
9 android-ndk:r12b-arm : Ok arm-linux-androideabi-gcc (GCC) 4.9.x 20150123 (prerelease)
10 android-ndk:r15c-arm : Ok arm-linux-androideabi-gcc (GCC) 4.9.x 20150123 (prerelease)
11 centos:5 : Ok gcc (GCC) 4.1.2 20080704 (Red Hat 4.1.2-55)
12 centos:6 : Ok gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-23)
13 centos:7 : Ok gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-28)
14 clearlinux:latest : Ok gcc (Clear Linux OS for Intel Architecture) 8.2.1 20180502
15 debian:7 : Ok gcc (Debian 4.7.2-5) 4.7.2
16 debian:8 : Ok gcc (Debian 4.9.2-10+deb8u1) 4.9.2
17 debian:9 : Ok gcc (Debian 6.3.0-18+deb9u1) 6.3.0 20170516
18 debian:experimental : Ok gcc (Debian 8.2.0-9) 8.2.0
19 debian:experimental-x-arm64 : Ok aarch64-linux-gnu-gcc (Debian 8.2.0-9) 8.2.0
20 debian:experimental-x-mips : Ok mips-linux-gnu-gcc (Debian 8.2.0-7) 8.2.0
21 debian:experimental-x-mips64 : Ok mips64-linux-gnuabi64-gcc (Debian 8.2.0-9) 8.2.0
22 debian:experimental-x-mipsel : Ok mipsel-linux-gnu-gcc (Debian 8.2.0-7) 8.2.0
23 fedora:20 : Ok gcc (GCC) 4.8.3 20140911 (Red Hat 4.8.3-7)
24 fedora:21 : Ok gcc (GCC) 4.9.2 20150212 (Red Hat 4.9.2-6)
25 fedora:22 : Ok gcc (GCC) 5.3.1 20160406 (Red Hat 5.3.1-6)
26 fedora:23 : Ok gcc (GCC) 5.3.1 20160406 (Red Hat 5.3.1-6)
27 fedora:24 : Ok gcc (GCC) 6.3.1 20161221 (Red Hat 6.3.1-1)
28 fedora:24-x-ARC-uClibc : Ok arc-linux-gcc (ARCompact ISA Linux uClibc toolchain 2017.09-rc2) 7.1.1 20170710
29 fedora:25 : Ok gcc (GCC) 6.4.1 20170727 (Red Hat 6.4.1-1)
30 fedora:26 : Ok gcc (GCC) 7.3.1 20180130 (Red Hat 7.3.1-2)
31 fedora:27 : Ok gcc (GCC) 7.3.1 20180712 (Red Hat 7.3.1-6)
32 fedora:28 : Ok gcc (GCC) 8.2.1 20181011 (Red Hat 8.2.1-4)
33 fedora:29 : Ok gcc (GCC) 8.2.1 20181011 (Red Hat 8.2.1-4)
34 fedora:rawhide : Ok gcc (GCC) 8.2.1 20181011 (Red Hat 8.2.1-4)
35 gentoo-stage3-amd64:latest : Ok gcc (Gentoo 7.3.0-r3 p1.4) 7.3.0
36 mageia:5 : Ok gcc (GCC) 4.9.2
37 mageia:6 : Ok gcc (Mageia 5.5.0-1.mga6) 5.5.0
38 opensuse:13.2 : Ok gcc (SUSE Linux) 4.8.3 20140627 [gcc-4_8-branch revision 212064]
39 opensuse:42.1 : Ok gcc (SUSE Linux) 4.8.5
40 opensuse:42.2 : Ok gcc (SUSE Linux) 4.8.5
41 opensuse:42.3 : Ok gcc (SUSE Linux) 4.8.5
42 opensuse:tumbleweed : Ok gcc (SUSE Linux) 7.3.1 20180323 [gcc-7-branch revision 258812]
43 oraclelinux:6 : Ok gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-23.0.1)
44 oraclelinux:7 : Ok gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-36.0.1)
45 ubuntu:12.04.5 : Ok gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3
46 ubuntu:14.04.4 : Ok gcc (Ubuntu 4.8.4-2ubuntu1~14.04.3) 4.8.4
47 ubuntu:14.04.4-x-linaro-arm64 : Ok aarch64-linux-gnu-gcc (Linaro GCC 5.5-2017.10) 5.5.0
48 ubuntu:16.04 : Ok gcc (Ubuntu 5.4.0-6ubuntu1~16.04.10) 5.4.0 20160609
49 ubuntu:16.04-x-arm : Ok arm-linux-gnueabihf-gcc (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
50 ubuntu:16.04-x-arm64 : Ok aarch64-linux-gnu-gcc (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
51 ubuntu:16.04-x-powerpc : Ok powerpc-linux-gnu-gcc (Ubuntu 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
52 ubuntu:16.04-x-powerpc64 : Ok powerpc64-linux-gnu-gcc (Ubuntu/IBM 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
53 ubuntu:16.04-x-powerpc64el : Ok powerpc64le-linux-gnu-gcc (Ubuntu/IBM 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
54 ubuntu:16.04-x-s390 : Ok s390x-linux-gnu-gcc (Ubuntu 5.4.0-6ubuntu1~16.04.9) 5.4.0 20160609
55 ubuntu:16.10 : Ok gcc (Ubuntu 6.2.0-5ubuntu12) 6.2.0 20161005
56 ubuntu:17.10 : Ok gcc (Ubuntu 7.2.0-8ubuntu3.2) 7.2.0
57 ubuntu:18.04 : Ok gcc (Ubuntu 7.3.0-27ubuntu1~18.04) 7.3.0
58 ubuntu:18.04-x-arm : Ok arm-linux-gnueabihf-gcc (Ubuntu/Linaro 7.3.0-27ubuntu1~18.04) 7.3.0
59 ubuntu:18.04-x-arm64 : Ok aarch64-linux-gnu-gcc (Ubuntu/Linaro 7.3.0-27ubuntu1~18.04) 7.3.0
60 ubuntu:18.04-x-powerpc : Ok powerpc-linux-gnu-gcc (Ubuntu 7.3.0-27ubuntu1~18.04) 7.3.0
61 ubuntu:18.04-x-powerpc64 : Ok powerpc64-linux-gnu-gcc (Ubuntu 7.3.0-27ubuntu1~18.04) 7.3.0
62 ubuntu:18.04-x-powerpc64el : Ok powerpc64le-linux-gnu-gcc (Ubuntu 7.3.0-27ubuntu1~18.04) 7.3.0
63 ubuntu:18.04-x-s390 : Ok s390x-linux-gnu-gcc (Ubuntu 7.3.0-27ubuntu1~18.04) 7.3.0
64 ubuntu:18.04-x-sparc64 : Ok sparc64-linux-gnu-gcc (Ubuntu 7.3.0-27ubuntu1~18.04) 7.3.0
65 ubuntu:18.10 : Ok gcc (Ubuntu 8.2.0-7ubuntu1) 8.2.0
#

# uname -a
Linux seventh 4.19.0-rc8-00014-gc0cff31be705 #1 SMP Wed Oct 17 09:00:22 -03 2018 x86_64 x86_64 x86_64 GNU/Linux
# git log --oneline -1
a4243e149453 perf tools beauty ioctl: Support new ISO7816 commands
# perf version --build-options
perf version 4.20.rc2.ga4243e
dwarf: [ on ] # HAVE_DWARF_SUPPORT
dwarf_getlocations: [ on ] # HAVE_DWARF_GETLOCATIONS_SUPPORT
glibc: [ on ] # HAVE_GLIBC_SUPPORT
gtk2: [ on ] # HAVE_GTK2_SUPPORT
syscall_table: [ on ] # HAVE_SYSCALL_TABLE_SUPPORT
libbfd: [ on ] # HAVE_LIBBFD_SUPPORT
libelf: [ on ] # HAVE_LIBELF_SUPPORT
libnuma: [ on ] # HAVE_LIBNUMA_SUPPORT
numa_num_possible_cpus: [ on ] # HAVE_LIBNUMA_SUPPORT
libperl: [ on ] # HAVE_LIBPERL_SUPPORT
libpython: [ on ] # HAVE_LIBPYTHON_SUPPORT
libslang: [ on ] # HAVE_SLANG_SUPPORT
libcrypto: [ on ] # HAVE_LIBCRYPTO_SUPPORT
libunwind: [ on ] # HAVE_LIBUNWIND_SUPPORT
libdw-dwarf-unwind: [ on ] # HAVE_DWARF_SUPPORT
zlib: [ on ] # HAVE_ZLIB_SUPPORT
lzma: [ on ] # HAVE_LZMA_SUPPORT
get_cpuid: [ on ] # HAVE_AUXTRACE_SUPPORT
bpf: [ on ] # HAVE_LIBBPF_SUPPORT
# 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: Test data source output : Ok
6: Parse event definition strings : Ok
7: Simple expression parser : Ok
8: PERF_RECORD_* events & perf_sample fields : Ok
9: Parse perf pmu format : Ok
10: DSO data read : Ok
11: DSO data cache : Ok
12: DSO data reopen : Ok
13: Roundtrip evsel->name : Ok
14: Parse sched tracepoints fields : Ok
15: syscalls:sys_enter_openat event fields : Ok
16: Setup struct perf_event_attr : Ok
17: Match and link multiple hists : Ok
18: 'import perf' in python : Ok
19: Breakpoint overflow signal handler : Ok
20: Breakpoint overflow sampling : Ok
21: Breakpoint accounting : Ok
22: Watchpoint :
22.1: Read Only Watchpoint : Skip
22.2: Write Only Watchpoint : Ok
22.3: Read / Write Watchpoint : Ok
22.4: Modify Watchpoint : Ok
23: Number of exit events of a simple workload : Ok
24: Software clock events period values : Ok
25: Object code reading : Ok
26: Sample parsing : Ok
27: Use a dummy software event to keep tracking : Ok
28: Parse with no sample_id_all bit set : Ok
29: Filter hist entries : Ok
30: Lookup mmap thread : Ok
31: Share thread mg : Ok
32: Sort output of hist entries : Ok
33: Cumulate child hist entries : Ok
34: Track with sched_switch : Ok
35: Filter fds with revents mask in a fdarray : Ok
36: Add fd to a fdarray, making it autogrow : Ok
37: kmod_path__parse : Ok
38: Thread map : Ok
39: LLVM search and compile :
39.1: Basic BPF llvm compile : Ok
39.2: kbuild searching : Ok
39.3: Compile source for BPF prologue generation : Ok
39.4: Compile source for BPF relocation : Ok
40: Session topology : Ok
41: BPF filter :
41.1: Basic BPF filtering : Ok
41.2: BPF pinning : Ok
41.3: BPF prologue generation : Ok
41.4: BPF relocation checker : Ok
42: Synthesize thread map : Ok
43: Remove thread map : Ok
44: Synthesize cpu map : Ok
45: Synthesize stat config : Ok
46: Synthesize stat : Ok
47: Synthesize stat round : Ok
48: Synthesize attr update : Ok
49: Event times : Ok
50: Read backward ring buffer : Ok
51: Print cpu map : Ok
52: Probe SDT events : Ok
53: is_printable_array : Ok
54: Print bitmap : Ok
55: perf hooks : Ok
56: builtin clang support : Skip (not compiled in)
57: unit_number__scnprintf : Ok
58: mem2node : Ok
59: x86 rdpmc : Ok
60: Convert perf time to TSC : Ok
61: DWARF unwind : Ok
62: x86 instruction decoder - new instructions : Ok
63: x86 bp modify : Ok
64: probe libc's inet_pton & backtrace it with ping : Ok
65: Check open filename arg using perf trace + vfs_getname: Ok
66: Use vfs_getname probe to get syscall args filenames : Ok
67: Add vfs_getname probe to get syscall args filenames : Ok

$ make -C tools/perf build-test
make: Entering directory '/home/acme/git/perf/tools/perf'
- tarpkg: ./tests/perf-targz-src-pkg .
make_no_ui_O: make NO_NEWT=1 NO_SLANG=1 NO_GTK2=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_libbpf_O: make NO_LIBBPF=1
make_doc_O: make doc
make_no_slang_O: make NO_SLANG=1
make_clean_all_O: make clean all
make_no_libperl_O: make NO_LIBPERL=1
make_no_libbionic_O: make NO_LIBBIONIC=1
make_no_libelf_O: make NO_LIBELF=1
make_no_backtrace_O: make NO_BACKTRACE=1
make_util_map_o_O: make util/map.o
make_no_libdw_dwarf_unwind_O: make NO_LIBDW_DWARF_UNWIND=1
make_no_libaudit_O: make NO_LIBAUDIT=1
make_util_pmu_bison_o_O: make util/pmu-bison.o
make_no_libunwind_O: make NO_LIBUNWIND=1
make_debug_O: make DEBUG=1
make_no_scripts_O: make NO_LIBPYTHON=1 NO_LIBPERL=1
make_no_demangle_O: make NO_DEMANGLE=1
make_with_clangllvm_O: make LIBCLANGLLVM=1
make_no_libpython_O: make NO_LIBPYTHON=1
make_no_newt_O: make NO_NEWT=1
- /home/acme/git/perf/tools/perf/BUILD_TEST_FEATURE_DUMP_STATIC: make FEATURE_DUMP_COPY=/home/acme/git/perf/tools/perf/BUILD_TEST_FEATURE_DUMP_STATIC LDFLAGS='-static' feature-dump
make FEATURE_DUMP_COPY=/home/acme/git/perf/tools/perf/BUILD_TEST_FEATURE_DUMP_STATIC LDFLAGS='-static' feature-dump
make_static_O: make LDFLAGS=-static
make_pure_O: make
make_no_gtk2_O: make NO_GTK2=1
make_perf_o_O: make perf.o
make_tags_O: make tags
make_install_bin_O: make install-bin
make_install_O: make install
make_install_prefix_O: make install prefix=/tmp/krava
make_help_O: make help
make_no_libnuma_O: make NO_LIBNUMA=1
make_install_prefix_slash_O: make install prefix=/tmp/krava/
make_no_auxtrace_O: make NO_AUXTRACE=1
make_with_babeltrace_O: make LIBBABELTRACE=1
OK
make: Leaving directory '/home/acme/git/perf/tools/perf'
$