Hi,

The patchset series supports writable context for bare tracepoint.

The main idea comes from patchset "writable contexts for bpf 
raw tracepoints" [1], but it only supports normal tracepoint
with associated trace event under tracefs. Bare tracepoint
is more light-weight and doesn't have the ABI burden of
normal tracepoint, so add support for it in BPF.

Any comments are welcome.

[1]: https://lore.kernel.org/lkml/20190426184951.21812-1-mmullins@fb.com (local)

Hou Tao (3):
  bpf: support writable context for bare tracepoint
  libbpf: support detecting and attaching of writable tracepoint program
  bpf/selftests: add test for writable bare tracepoint

 include/trace/bpf_probe.h                     | 19 +++++++--
 tools/lib/bpf/libbpf.c                        |  4 ++
 .../bpf/bpf_testmod/bpf_testmod-events.h      | 15 +++++++
 .../selftests/bpf/bpf_testmod/bpf_testmod.c   | 10 +++++
 .../selftests/bpf/bpf_testmod/bpf_testmod.h   |  5 +++
 .../selftests/bpf/prog_tests/module_attach.c  | 40 ++++++++++++++++++-
 .../selftests/bpf/progs/test_module_attach.c  | 14 +++++++
 7 files changed, 101 insertions(+), 6 deletions(-)

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2.29.2