[GIT,PULL,00/31] perf tools: filtering events using eBPF programs

Hi Arnaldo and Ingo,

Several small proglems are fixed based on yesterday's pull request. Please
see below. Since patch order is changed (original 20/32 and 32/32 are
dropped), I decide to send all of them again. Sorry for the noisy.

In addition: I collect a cross-compiling fix I posted yesterday into this
cset (the last one).

The following changes since commit 2c07144dfce366e21465cc7b0ada9f0b6dc7b7ed:

  perf evlist: Add backpointer for perf_env to evlist (2015-08-28 14:54:14 -0300)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/pi3orama/linux tags/perf-ebpf-for-acme-20150829

for you to fetch changes up to d4a337392b3724899a084170d9ea36a8e2392097:

  tools lib traceevent: Support function __get_dynamic_array_len (2015-08-29 02:57:40 +0000)

----------------------------------------------------------------
perf BPF related improvements and bugfix:

 - Rebase to Arnaldo's newest perf/core.

 - Fix a missing include in builtin-trace.c.

 - Drop patch 'perf tools: Fix probe-event.h include' since
   the problem has been fixed by commit 5a023b57.

 - Fix a cross compiling error (introduced by inter pt).

 - Drop patch 'bpf: Introduce function for outputing data to
   perf event' because we want to do better.

Signed-off-by: Wang Nan <wangnan0@huawei.com>

----------------------------------------------------------------
He Kuang (4):
      perf tools: Move linux/filter.h to tools/include
      perf tools: Introduce arch_get_reg_info() for x86
      perf record: Support custom vmlinux path
      tools lib traceevent: Support function __get_dynamic_array_len

Wang Nan (27):
      bpf tools: New API to get name from a BPF object
      perf tools: Don't set cmdline_group_boundary if no evsel is collected
      perf tools: Introduce dummy evsel
      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: Allow filter option to be applied to bof object
      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: Add 'perf test BPF'
      bpf tools: Load a program with different instances using preprocessor
      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
      perf tools: Fix cross compiling error

 tools/build/Makefile.feature                       |   6 +-
 tools/include/linux/filter.h                       | 237 +++++++
 tools/lib/bpf/libbpf.c                             | 168 ++++-
 tools/lib/bpf/libbpf.h                             |  26 +-
 tools/lib/traceevent/event-parse.c                 |  56 +-
 tools/lib/traceevent/event-parse.h                 |   1 +
 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                        |  64 +-
 tools/perf/builtin-stat.c                          |   9 +-
 tools/perf/builtin-top.c                           |  11 +-
 tools/perf/builtin-trace.c                         |   7 +-
 tools/perf/config/Makefile                         |  31 +-
 tools/perf/tests/Build                             |  10 +-
 tools/perf/tests/bpf-script-example.c              |  44 ++
 tools/perf/tests/bpf.c                             | 170 +++++
 tools/perf/tests/builtin-test.c                    |  12 +
 tools/perf/tests/llvm.c                            | 125 +++-
 tools/perf/tests/llvm.h                            |  15 +
 tools/perf/tests/make                              |   4 +-
 tools/perf/tests/tests.h                           |   3 +
 tools/perf/util/Build                              |   4 +-
 tools/perf/util/bpf-loader.c                       | 730 +++++++++++++++++++++
 tools/perf/util/bpf-loader.h                       |  95 +++
 tools/perf/util/bpf-prologue.c                     | 442 +++++++++++++
 tools/perf/util/bpf-prologue.h                     |  34 +
 tools/perf/util/evlist.c                           | 107 +++
 tools/perf/util/evlist.h                           |   2 +
 tools/perf/util/evsel.c                            |  49 ++
 tools/perf/util/evsel.h                            |   7 +
 tools/perf/util/include/dwarf-regs.h               |   7 +
 tools/perf/util/parse-events.c                     |  73 ++-
 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                      |   7 +-
 tools/perf/util/probe-file.c                       |   5 +-
 tools/perf/util/probe-finder.c                     |   4 +
 .../perf/util/scripting-engines/trace-event-perl.c |   1 +
 .../util/scripting-engines/trace-event-python.c    |   1 +
 45 files changed, 2698 insertions(+), 121 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