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由 Jesper Dangaard Brouer 提交于
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 9d1f1594 ("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[1] 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. [1] https://www.gnu.org/software/make/manual/html_node/Static-Usage.html Fixes: 9d1f1594 ("bpf: move cgroup_helpers from samples/bpf/ to tools/testing/selftesting/bpf/") Signed-off-by: NJesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: NAlexei Starovoitov <ast@kernel.org>
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