On Tue, Feb 13, 2018 at 02:19:15PM +0100, Jesper Dangaard Brouer wrote:
> The current selftests Makefile construct result in cgroup_helpers.c
> gets compiled together with all the TEST_GEN_PROGS. And it also result
> in invoking the libbpf Makefile two times (tools/lib/bpf).
> These issues were introduced in commit 9d1f15941967 ("bpf: move
> cgroup_helpers from samples/bpf/ to tools/testing/selftesting/bpf/").
> The only test program that requires the cgroup helpers is 'test_dev_cgroup'.
> Thus, create a make target $(OUTPUT)/test_dev_cgroup that extend
> the 'prerequisite' for the 'stem' %-style pattern in ../lib.mk,
> for this particular test program.
> Reviewers notice the make-rules in tools/testing/selftests/lib.mk
> differ from the normal kernel kbuild rules, and it is practical
> to use 'make -p' to follow how these 'Implicit/static pattern stem'
> gets expanded.
>  https://www.gnu.org/software/make/manual/html_node/Static-Usage.html
> Fixes: 9d1f15941967 ("bpf: move cgroup_helpers from samples/bpf/ to
> Signed-off-by: Jesper Dangaard Brouer <bro...@redhat.com>
Applied to bpf-next, Thanks Jesper.