[GIT PULL 0/2] perf/urgent fixes

From: Arnaldo Carvalho de Melo
Date: Tue Jul 04 2017 - 15:30:20 EST

Hi Ingo,

Please consider pulling, very small patches,

- Arnaldo

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

The following changes since commit e3c2c4fb524b548e58108a8820c0ac7787667584:

Merge tag 'perf-urgent-for-mingo-4.12-20170626' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent (2017-06-27 09:17:02 +0200)

are available in the git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-urgent-for-mingo-4.12-20170704

for you to fetch changes up to 1934adf78e33fa69570a763c7ac5353212416bb0:

perf unwind: Do not fail due to missing unwind support (2017-07-04 11:43:58 -0300)

perf/urgent fixes:

User visible:

- Fix max attr.precise_ip probing to make perf use the best cycles:p
available in the processor for non root users (Arnaldo Carvalho de Melo)

- Fix processing of MMAP events for 32-bit binaries on 64-bit systems
when unwind support is not fully integrated, fixing DSO and symbol
resolution (Jiri Olsa)

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

Arnaldo Carvalho de Melo (1):
perf evsel: Set attr.exclude_kernel when probing max attr.precise_ip

Jiri Olsa (1):
perf unwind: Do not fail due to missing unwind support

tools/perf/util/evsel.c | 1 +
tools/perf/util/unwind-libunwind.c | 2 +-
2 files changed, 2 insertions(+), 1 deletion(-)

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

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:42.2: Ok
30 opensuse:tumbleweed: Ok
31 ubuntu:12.04.5: Ok
32 ubuntu:14.04.4: Ok
33 ubuntu:14.04.4-x-linaro-arm64: Ok
34 ubuntu:15.10: Ok
35 ubuntu:16.04: Ok
36 ubuntu:16.04-x-arm: Ok
37 ubuntu:16.04-x-arm64: Ok
38 ubuntu:16.04-x-powerpc: Ok
39 ubuntu:16.04-x-powerpc64: Ok
40 ubuntu:16.04-x-powerpc64el: Ok
41 ubuntu:16.04-x-s390: Ok
42 ubuntu:16.10: Ok
43 ubuntu:17.04: Ok
44 ubuntu:17.10: Ok

# uname -a
Linux jouet 4.12.0-rc6+ #3 SMP Tue Jun 27 15:12:38 -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

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