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

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Date:	Wed, 23 Sep 2015 10:46:39 -0300
From:	Arnaldo Carvalho de Melo <acme@...hat.com>
To:	Wang Nan <wangnan0@...wei.com>
Cc:	linux-kernel@...r.kernel.org, pi3orama@....com, acme@...nel.org
Subject: Re: [GIT PULL 00/22] perf tools: filtering events using eBPF programs

Em Wed, Sep 23, 2015 at 11:22:21AM +0000, Wang Nan escreveu:
> Hi Arnaldo,
> 
>    I hope you would be satisified with this weeks pull request. In this
> patchset, we totally get rid of dummy events by utilizing Namhyung's newest
> perf probing API.
> 
> Patch 1-6 are different from previous patchset. Plase have a look.
> 
> Due to some reason I can't access my kernel.org account in my company today,
> so I reuse my github repository. I'll update my kernel.org tree at home.
> 
> I'll have a long vacation from Sept. 24. I hope I can discuss with you with
> my private email. However, It seems impossible to modify code and test until
> Oct. 7. If you find some small problem, could you please help me fix them?

Sure thing, I'll continue working on this, we'll get there :-)
 
> Thank you.
> 
> The following changes since commit 5933944f697c15d6f1fb16dc22c02aac9d2ec206:
> 
>   perf tools: Make perf depend on libbpf (2015-09-22 10:17:01 -0300)
> 
> are available in the git repository at:
> 
>   https://github.com/WangNan0/linux.git tags/perf-ebpf-for-acme-20150923
> 
> for you to fetch changes up to 1465cf7b201b8b21c61fa54ffe15094f66e73ab0:
> 
>   perf probe: Fix module probing with shortname (2015-09-23 10:44:58 +0000)
> 
> ----------------------------------------------------------------
> Get rid of dummy events by utilizing new perf probe API.
> 
> Signed-off-by: Wang Nan <wangnan0@...wei.com>
> 
> ----------------------------------------------------------------
> He Kuang (2):
>       perf tools: Add prologue for BPF programs for fetching arguments
>       perf record: Support custom vmlinux path
> 
> Wang Nan (20):
>       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
>       perf probe: Fix module probing with shortname
> 
>  tools/lib/bpf/libbpf.c                      | 143 +++++-
>  tools/lib/bpf/libbpf.h                      |  22 +
>  tools/perf/arch/x86/util/Build              |   1 +
>  tools/perf/builtin-record.c                 |  11 +
>  tools/perf/config/Makefile                  |  12 +
>  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             |  12 +
>  tools/perf/tests/llvm.c                     | 210 ++++++++-
>  tools/perf/tests/llvm.h                     |  29 ++
>  tools/perf/tests/tests.h                    |   3 +
>  tools/perf/util/Build                       |   2 +
>  tools/perf/util/bpf-loader.c                | 676 ++++++++++++++++++++++++++++
>  tools/perf/util/bpf-loader.h                |  95 ++++
>  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-event.c               |   2 +-
>  tools/perf/util/probe-finder.c              |   4 +
>  28 files changed, 2202 insertions(+), 31 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
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