Re: [GIT PULL 00/22] perf tools: filtering events using eBPF programs

[Arnaldo Carvalho de Melo <acme@redhat.com>]

Em Thu, Oct 08, 2015 at 08:29:22AM +0000, Wang Nan escreveu:
> Hi Arnaldo,
> 
>    Have we made any progress on this patch set?

Well, only one of the patches, not strictly related to eBPF gave me some
work:

  commit 266fa2b22294909ddf6e7d2f8acfe07adf9fd978
  Author: Arnaldo Carvalho de Melo <acme@redhat.com>
  Date:   Thu Sep 24 11:24:18 2015 -0300

      perf probe: Use existing routine to look for a kernel module by
  dso->short_name

And some patches came from Masami that I think were somehow related to
things you reported, had to review/test/apply/push those as well.

- Arnaldo
 
>    I have finished my vacation. In this new pull request, I rebase BPF patches
> onto the newest perf/core, and fix a document problem in Makefile.perf.
> 
> The following changes since commit ae938802443732e77d01f8d5b52b900b9327ff30:
> 
>   perf python: Support the PERF_RECORD_SWITCH event (2015-10-07 19:41:50 -0300)
> 
> are available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/pi3orama/linux tags/perf-ebpf-for-acme-20151008
> 
> for you to fetch changes up to 60d6b3bceb3d87497c542dec61e4a968d9e2b488:
> 
>   perf test: Test BPF prologue (2015-10-08 07:23:33 +0000)
> 
> ----------------------------------------------------------------
> EBPF support for perf
> 
>  - Rebase to newest perf/core
> 
>  - Fix a document problem in Makefile.perf: NO_BPF -> NO_LIBBPF
> 
> Signed-off-by: Wang Nan <wangnan0@huawei.com>
> 
> ----------------------------------------------------------------
> He Kuang (2):
>       perf tools: Add prologue for BPF programs for fetching arguments
>       perf record: Support custom vmlinux path
> 
> Wang Nan (20):
>       perf tools: Make perf depend on libbpf
>       perf ebpf: Add the libbpf glue
>       perf tools: Enable passing bpf object file to --event
>       perf record, bpf: Create probe points for BPF programs
>       perf record: Load eBPF object into kernel
>       perf tools: Collect perf_evsel in BPF object files
>       perf tools: Attach eBPF program to perf event
>       perf record: Add clang options for compiling BPF scripts
>       perf tools: Compile scriptlets to BPF objects when passing '.c' to --event
>       perf test: Enforce LLVM test for BPF test
>       perf test: Add 'perf test BPF'
>       perf probe: Reset args and nargs for probe_trace_event when failure
>       bpf tools: Load a program with different instances using preprocessor
>       perf tools: Add BPF_PROLOGUE config options for further patches
>       perf tools: Compile dwarf-regs.c if CONFIG_BPF_PROLOGUE is on
>       perf tools: Generate prologue for BPF programs
>       perf tools: Use same BPF program if arguments are identical
>       perf tools: Allow BPF program attach to uprobe events
>       perf test: Enforce LLVM test, add kbuild test
>       perf test: Test BPF prologue
> 
>  tools/build/Makefile.feature                |   6 +-
>  tools/lib/bpf/libbpf.c                      | 143 +++++-
>  tools/lib/bpf/libbpf.h                      |  22 +
>  tools/perf/MANIFEST                         |   3 +
>  tools/perf/Makefile.perf                    |  21 +-
>  tools/perf/arch/x86/util/Build              |   1 +
>  tools/perf/builtin-record.c                 |  11 +
>  tools/perf/config/Makefile                  |  31 +-
>  tools/perf/perf.c                           |   2 +
>  tools/perf/tests/Build                      |  24 +-
>  tools/perf/tests/bpf-script-example.c       |  48 ++
>  tools/perf/tests/bpf-script-test-kbuild.c   |  21 +
>  tools/perf/tests/bpf-script-test-prologue.c |  35 ++
>  tools/perf/tests/bpf.c                      | 227 ++++++++++
>  tools/perf/tests/builtin-test.c             |  10 +
>  tools/perf/tests/llvm.c                     | 210 ++++++++-
>  tools/perf/tests/llvm.h                     |  29 ++
>  tools/perf/tests/make                       |   4 +-
>  tools/perf/tests/tests.h                    |   5 +
>  tools/perf/util/Build                       |   2 +
>  tools/perf/util/bpf-loader.c                | 677 ++++++++++++++++++++++++++++
>  tools/perf/util/bpf-loader.h                |  94 ++++
>  tools/perf/util/bpf-prologue.c              | 443 ++++++++++++++++++
>  tools/perf/util/bpf-prologue.h              |  34 ++
>  tools/perf/util/evsel.c                     |  17 +
>  tools/perf/util/evsel.h                     |   1 +
>  tools/perf/util/parse-events.c              | 115 +++++
>  tools/perf/util/parse-events.h              |   9 +
>  tools/perf/util/parse-events.l              |   6 +
>  tools/perf/util/parse-events.y              |  29 +-
>  tools/perf/util/probe-finder.c              |   4 +
>  31 files changed, 2248 insertions(+), 36 deletions(-)
>  create mode 100644 tools/perf/tests/bpf-script-example.c
>  create mode 100644 tools/perf/tests/bpf-script-test-kbuild.c
>  create mode 100644 tools/perf/tests/bpf-script-test-prologue.c
>  create mode 100644 tools/perf/tests/bpf.c
>  create mode 100644 tools/perf/tests/llvm.h
>  create mode 100644 tools/perf/util/bpf-loader.c
>  create mode 100644 tools/perf/util/bpf-loader.h
>  create mode 100644 tools/perf/util/bpf-prologue.c
>  create mode 100644 tools/perf/util/bpf-prologue.h
> 
> -- 
> 1.8.3.4