[PATCH bpf-next v2 0/2] libbpf: support "module:function" syntax for tracing programs

[Viktor Malik <vmalik@redhat.com>]

In some situations, it is useful to explicitly specify a kernel module
to search for a tracing program target (e.g. when a function of the same
name exists in multiple modules or in vmlinux).

This change enables that by allowing the "module:function" syntax for
the find_kernel_btf_id function. Thanks to this, the syntax can be used
both from a SEC macro (i.e. `SEC(fentry/module:function)`) and via the
bpf_program__set_attach_target API call.

--- 

Changes in v2:
- stylistic changes (suggested by Andrii)
- added Andrii's ack to the second patch

Viktor Malik (2):
  libbpf: support "module:function" syntax for tracing programs
  selftests/bpf: add tests for the "module:function" syntax

 tools/lib/bpf/libbpf.c                        | 35 ++++++++++++++-----
 .../selftests/bpf/prog_tests/module_attach.c  |  6 ++++
 .../selftests/bpf/progs/test_module_attach.c  | 23 ++++++++++++
 3 files changed, 55 insertions(+), 9 deletions(-)

-- 
2.44.0