On 9/16/21 6:55 AM, Hou Tao wrote:
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.
Just curious that do you have an actual use case for this? If that is the case, it would be good that you stated in the cover letter and relevant commit message. Also, please add bpf-next to the tag like [PATCH bpf-next x/x] to make it clear that the patch set is for bpf-next.
Any comments are welcome. [1]: https://lore.kernel.org/lkml/20190426184951.21812-1-mmullins@xxxxxx 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(-)
