On Sat, 3 Aug 2019 23:52:16 -0700, Y Song wrote: > > include/uapi/linux/bpf.h | 21 +++++++-- > > net/core/filter.c | 20 ++++++++ > > tools/include/uapi/linux/bpf.h | 21 +++++++-- > > tools/testing/selftests/bpf/bpf_helpers.h | 2 + > > .../bpf/prog_tests/udp_flow_src_port.c | 28 +++++++++++ > > .../bpf/progs/test_udp_flow_src_port_kern.c | 47 +++++++++++++++++++ > > 6 files changed, 131 insertions(+), 8 deletions(-) > > create mode 100644 tools/testing/selftests/bpf/prog_tests/udp_flow_src_port.c > > create mode 100644 tools/testing/selftests/bpf/progs/test_udp_flow_src_port_kern.c > > First, for each review, backport and sync with libbpf repo, in the future, > could you break the patch to two patches? > 1. kernel changes (net/core/filter.c, include/uapi/linux/bpf.h) > 2. tools/include/uapi/linux/bpf.h > 3. tools/testing/ changes A lot of people get caught off by this, could explain why this is necessary? git can deal with this scenario without missing a step, format-patch takes paths: $ git show --oneline -s 1002f3e955d7 (HEAD) bpf: introduce new helper udp_flow_src_port $ git format-patch HEAD~ -- tools/include/uapi/linux/bpf.h 0001-bpf-introduce-new-helper-udp_flow_src_port.patch $ grep -B1 changed 0001-bpf-introduce-new-helper-udp_flow_src_port.patch tools/include/uapi/linux/bpf.h | 21 +++++++++++++++++---- 1 file changed, 17 insertions(+), 4 deletions(-) $ cd ../libbpf $ git am -p2 ../linux/0001-bpf-introduce-new-helper-udp_flow_src_port.patch Applying: bpf: introduce new helper udp_flow_src_port error: patch failed: include/uapi/linux/bpf.h:2853 error: include/uapi/linux/bpf.h: patch does not apply ... Well, the patch doesn't apply to libbpf right now, but git finds the right paths and all that. IMO it'd be good to not have this artificial process obstacle and all the "sync headers" commits in the tree.
