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Subject[GIT PULL 00/15] perf/urgent fixes
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Hi Ingo,

Please consider pulling,

- Arnaldo

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

The following changes since commit 3e411b0ee7c7bf0cbe2bd5961f84a02f0451ad57:

Merge tag 'perf-urgent-for-mingo-4.12-20170606' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent (2017-06-07 17:50:19 +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-4.12-20170608

for you to fetch changes up to b89fe63fbafe307fb72546f7a2320380bf41bdd4:

perf symbols: Kill dso__build_id_is_kmod() (2017-06-08 15:39:34 -0300)

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

- Fixes for handling compressed kernel modules (Namhyung Kim)

- Fix handling old style build-id cache ($HOME/.debug/) (Namhyung Kim)

- 'perf script' python/perl documentation fixes: outdated comments,
invalid code snippets, etc (SeongJae Park)

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

----------------------------------------------------------------
Namhyung Kim (9):
perf annotate: Fix symbolic link of build-id cache
perf tools: Fix a memory leak in __open_dso()
perf tools: Introduce dso__decompress_kmodule_{fd,path}
perf annotate: Use dso__decompress_kmodule_path()
perf tools: Decompress kernel module when reading DSO data
perf tools: Consolidate error path in __open_dso()
perf tests: Decompress kernel module before objdump
perf symbols: Keep DSO->symtab_type after decompress
perf symbols: Kill dso__build_id_is_kmod()

SeongJae Park (6):
perf probe: Fix examples section of documentation
perf script: Fix outdated comment for perf-trace-python
perf script: Fix documentation errors
perf script python: Fix wrong code snippets in documentation
perf script python: Updated trace_unhandled() signature
perf script python: Remove dups in documentation examples

tools/perf/Documentation/perf-probe.txt | 8 +-
tools/perf/Documentation/perf-script-perl.txt | 2 +-
tools/perf/Documentation/perf-script-python.txt | 23 +++---
tools/perf/tests/code-reading.c | 20 ++++-
tools/perf/util/annotate.c | 37 +++-------
tools/perf/util/build-id.c | 45 ------------
tools/perf/util/build-id.h | 1 -
tools/perf/util/dso.c | 85 ++++++++++++++++++++--
tools/perf/util/dso.h | 6 ++
.../util/scripting-engines/trace-event-python.c | 2 +-
tools/perf/util/symbol-elf.c | 38 +---------
tools/perf/util/symbol.c | 4 -
12 files changed, 136 insertions(+), 135 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.

[root@jouet ~]# 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
41 ubuntu:16.10: Ok
42 ubuntu:17.04: Ok
#

[root@jouet ~]# uname -a
Linux jouet 4.11.0-rc8+ #8 SMP Wed Apr 26 08:50:41 -03 2017 x86_64 x86_64 x86_64 GNU/Linux
[root@jouet ~]# 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
[root@jouet ~]#

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

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