Re: [GIT PULL 00/19] perf/core improvements and fixes

[Ingo Molnar]

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

> Hi Ingo,
> 
> 	Please consider pulling,
> 
> I've added building objtool to most of the containers in my build test setup:
> 
> [root@jouet ~]# perf stat dm
> alpine:3.4: Ok
> centos:5: Ok
> centos:6: Ok
> centos:7: Ok
> debian:7: Ok
> debian:8: Ok
> debian:experimental: Ok
> fedora:21: Ok
> fedora:22: Ok
> fedora:23: Ok
> fedora:24: Ok
> fedora:rawhide: Ok
> mageia:5: Ok
> opensuse:13.2: Ok
> opensuse:42.1: Ok
> ubuntu:12.04.5: Ok
> ubuntu:14.04.4: Ok
> ubuntu:15.10: Ok
> ubuntu:16.04: Ok
> 
>  Performance counter stats for 'dm':
> 
>        2601.121782      task-clock (msec)         #    0.002 CPUs utilized          
>             86,368      context-switches          #    0.033 M/sec                  
>              5,740      cpu-migrations            #    0.002 M/sec                  
>             53,962      page-faults               #    0.021 M/sec                  
>      7,217,605,183      cycles                    #    2.775 GHz                    
>      6,534,540,119      instructions              #    0.91  insn per cycle         
>      1,408,715,184      branches                  #  541.580 M/sec                  
>         18,523,459      branch-misses             #    1.31% of all branches        
> 
>     1541.746171526 seconds time elapsed
> 
> [root@jouet ~]# 
> 
> - Arnaldo
> 
> The following changes since commit 7b39cafb7aa68ef8e32a9f51fbe737d96084ca74:
> 
>   tools: Work around BITS_PER_LONG related build failure in objtool (2016-07-13 09:37:43 +0200)
> 
> are available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git tags/perf-core-for-mingo-20160713
> 
> for you to fetch changes up to 8e5dc848356ecf6ea8d27d641c4d7ad8d42fe92b:
> 
>   perf test: Add a test case for SDT event (2016-07-13 23:09:10 -0300)
> 
> ----------------------------------------------------------------
> perf/core improvements and fixes:
> 
> User visible:
> 
> - Finish merging initial SDT (Statically Defined Traces) support, see
>   cset comments for details about how it all works (Masami Hiramatsu)
> 
> - Support attaching eBPF programs to tracepoints (Wang Nan)
> 
> Infrastructure:
> 
> - Fix up BITS_PER_LONG setting (Arnaldo Carvalho de Melo)
> 
> - Add fallback from ELF_C_READ_MMAP to ELF_C_READ in objtool, fixing
>   the build in libelf implementations lacking that elf_begin() cmd,
>   such as Alpine Linux's (Arnaldo Carvalho de Melo)
> 
> - Avoid checking code drift on busybox's diff in objtool (Arnaldo Carvalho de Melo)
> 
> Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
> 
> ----------------------------------------------------------------
> Arnaldo Carvalho de Melo (3):
>       tools: Fix up BITS_PER_LONG setting
>       objtool: Add fallback from ELF_C_READ_MMAP to ELF_C_READ
>       objtool: Avoid checking code drift on busybox's diff
> 
> Masami Hiramatsu (11):
>       perf probe: Fix to show correct error message for $vars and $params
>       perf probe: Accept %sdt and %cached event name
>       perf probe: Make --list show only available cached events
>       perf probe-cache: Add for_each_probe_cache_entry() wrapper
>       perf probe: Allow wildcard for cached events
>       perf probe: Search SDT/cached event from all probe caches
>       perf list: Show SDT and pre-cached events
>       perf probe: Support @BUILDID or @FILE suffix for SDT events
>       perf probe: Support a special SDT probe format
>       perf build: Add sdt feature detection
>       perf test: Add a test case for SDT event
> 
> Wang Nan (5):
>       tools lib bpf: New API to adjust type of a BPF program
>       tools lib bpf: Report error when kernel doesn't support program type
>       perf event parser: Add const qualifier to evt_name and sys_name
>       perf bpf: Rename bpf__foreach_tev() to bpf__foreach_event()
>       perf bpf: Support BPF program attach to tracepoints
> 
>  tools/build/Makefile.feature            |   3 +-
>  tools/build/feature/Makefile            |   6 +-
>  tools/build/feature/test-all.c          |   5 +
>  tools/build/feature/test-sdt.c          |   7 +
>  tools/include/asm-generic/bitsperlong.h |  24 ++-
>  tools/lib/bpf/libbpf.c                  |  80 +++++++--
>  tools/lib/bpf/libbpf.h                  |  10 ++
>  tools/objtool/Makefile                  |   5 +-
>  tools/objtool/elf.c                     |   7 +
>  tools/perf/Documentation/perf-probe.txt |  11 +-
>  tools/perf/Makefile.perf                |   3 +
>  tools/perf/builtin-list.c               |   6 +-
>  tools/perf/builtin-probe.c              |   2 +-
>  tools/perf/config/Makefile              |  10 ++
>  tools/perf/tests/Build                  |   1 +
>  tools/perf/tests/builtin-test.c         |   4 +
>  tools/perf/tests/make                   |   3 +-
>  tools/perf/tests/sdt.c                  | 115 ++++++++++++
>  tools/perf/tests/tests.h                |   1 +
>  tools/perf/util/bpf-loader.c            |  73 +++++++-
>  tools/perf/util/bpf-loader.h            |  12 +-
>  tools/perf/util/build-id.c              |  76 +++++++-
>  tools/perf/util/build-id.h              |   3 +-
>  tools/perf/util/parse-events.c          | 110 ++++++++++--
>  tools/perf/util/parse-events.h          |   4 +-
>  tools/perf/util/probe-event.c           | 309 +++++++++++++++++++++++++++-----
>  tools/perf/util/probe-event.h           |   1 +
>  tools/perf/util/probe-file.c            |  57 ++++--
>  tools/perf/util/probe-file.h            |  14 ++
>  29 files changed, 850 insertions(+), 112 deletions(-)
>  create mode 100644 tools/build/feature/test-sdt.c
>  create mode 100644 tools/perf/tests/sdt.c

Pulled, thanks a lot Arnaldo!

	Ingo