[GIT PULL 00/27] perf tools: filtering events using eBPF programs

[Wang Nan]

Hi Arnaldo,

   This is patches needs to be reviewed after Ingo's pull. In this series,
I made following improvements:

  1. Remove all pr_err and introduce bpf__strerror_{prepare_load,probe,load}.
     All callers are switched to strerror style;

  2. Avoid the global 'struct perf_probe_event' array used by perf__probe(). This
     is done by moving config_bpf_program() to bpf__probe().

The following changes since commit 64d3e6a927b9fef30efafc0aacab563a3065db24:

  perf tools: Unset perf_event_attr::freq when period term is set (2015-08-08 14:32:00 -0300)

are available in the git repository at:

  https://github.com/WangNan0/linux.git ebpf

for you to fetch changes up to 947b8f665e9ad50071ba5e83cbfb54345706ba98:

  perf tools: Support attach BPF program on uprobe events (2015-08-09 16:45:16 +0000)

----------------------------------------------------------------
He Kuang (3):
      perf tools: Move linux/filter.h to tools/include
      perf tools: Introduce arch_get_reg_info() for x86
      perf record: Support custom vmlinux path

Wang Nan (24):
      perf tools: Make perf depend on libbpf
      perf ebpf: Add the libbpf glue
      perf tools: Enable passing bpf object file to --event
      perf probe: Attach trace_probe_event with perf_probe_event
      perf record, bpf: Parse and probe eBPF programs probe points
      perf bpf: Collect 'struct perf_probe_event' for bpf_program
      perf record: Load all eBPF object into kernel
      perf tools: Add bpf_fd field to evsel and config it
      perf tools: Attach eBPF program to perf event
      perf tools: Suppress probing messages when probing by BPF loading
      perf record: Add clang options for compiling BPF scripts
      perf tools: Infrastructure for compiling scriptlets when passing '.c' to --event
      perf tests: Enforce LLVM test for BPF test
      perf test: Enable 'perf test' run as test targets
      perf test: Add 'perf test BPF'
      bpf tools: Load a program with different instances using preprocessor
      perf tools: Fix probe-event.h include
      perf probe: Reset args and nargs for probe_trace_event when failure
      perf tools: Add BPF_PROLOGUE config options for further patches
      perf tools: Add prologue for BPF programs for fetching arguments
      perf tools: Generate prologue for BPF programs
      perf tools: Use same BPF program if arguments are identical
      perf probe: Init symbol as kprobe
      perf tools: Support attach BPF program on uprobe events

 tools/build/Makefile.feature          |   6 +-
 tools/include/linux/filter.h          | 237 ++++++++++++
 tools/lib/bpf/libbpf.c                | 143 ++++++-
 tools/lib/bpf/libbpf.h                |  22 ++
 tools/perf/MANIFEST                   |   4 +
 tools/perf/Makefile.perf              |  19 +-
 tools/perf/arch/x86/Makefile          |   1 +
 tools/perf/arch/x86/util/Build        |   2 +
 tools/perf/arch/x86/util/dwarf-regs.c | 104 +++--
 tools/perf/builtin-probe.c            |   4 +-
 tools/perf/builtin-record.c           |  52 ++-
 tools/perf/config/Makefile            |  31 +-
 tools/perf/tests/Build                |  10 +-
 tools/perf/tests/bpf-script-example.c |  44 +++
 tools/perf/tests/bpf.c                | 229 +++++++++++
 tools/perf/tests/builtin-test.c       |  61 +++
 tools/perf/tests/llvm.c               | 123 +++++-
 tools/perf/tests/llvm.h               |  15 +
 tools/perf/tests/make                 |   4 +-
 tools/perf/tests/tests.h              |   5 +
 tools/perf/util/Build                 |   2 +
 tools/perf/util/bpf-loader.c          | 707 ++++++++++++++++++++++++++++++++++
 tools/perf/util/bpf-loader.h          |  82 ++++
 tools/perf/util/bpf-prologue.c        | 442 +++++++++++++++++++++
 tools/perf/util/bpf-prologue.h        |  34 ++
 tools/perf/util/evlist.c              |  41 ++
 tools/perf/util/evlist.h              |   1 +
 tools/perf/util/evsel.c               |  17 +
 tools/perf/util/evsel.h               |   1 +
 tools/perf/util/include/dwarf-regs.h  |   7 +
 tools/perf/util/parse-events.c        |  26 ++
 tools/perf/util/parse-events.h        |   4 +
 tools/perf/util/parse-events.l        |   6 +
 tools/perf/util/parse-events.y        |  29 +-
 tools/perf/util/probe-event.c         |  79 ++--
 tools/perf/util/probe-event.h         |   8 +-
 tools/perf/util/probe-file.c          |   5 +-
 tools/perf/util/probe-finder.c        |   4 +
 38 files changed, 2512 insertions(+), 99 deletions(-)
 create mode 100644 tools/include/linux/filter.h
 create mode 100644 tools/perf/tests/bpf-script-example.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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