From bfe42797bc7e962f01028436e106769ca9338b65 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Toke=20H=C3=B8iland-J=C3=B8rgensen?= Date: Mon, 20 Jan 2020 14:06:43 +0100 Subject: [PATCH] selftests: Pass VMLINUX_BTF to runqslower Makefile MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add a VMLINUX_BTF variable with the locally-built path when calling the runqslower Makefile from selftests. This makes sure a simple 'make' invocation in the selftests dir works even when there is no BTF information for the running kernel. Do a wildcard expansion and include the same paths for BTF for the running kernel as in the runqslower Makefile, to make it possible to build selftests without having a vmlinux in the local tree. Also fix the make invocation to use $(OUTPUT)/tools as the destination directory instead of $(CURDIR)/tools. Fixes: 3a0d3092a4ed ("selftests/bpf: Build runqslower from selftests") Signed-off-by: Toke Høiland-Jørgensen Signed-off-by: Alexei Starovoitov Acked-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/157952560344.1683545.2723631988771664417.stgit@toke.dk --- tools/testing/selftests/bpf/Makefile | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 246d09ffb296..8240282aef7f 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -124,10 +124,14 @@ $(OUTPUT)/test_stub.o: test_stub.c $(call msg,CC,,$@) $(CC) -c $(CFLAGS) -o $@ $< +VMLINUX_BTF_PATHS := $(abspath ../../../../vmlinux) \ + /sys/kernel/btf/vmlinux \ + /boot/vmlinux-$(shell uname -r) +VMLINUX_BTF:= $(firstword $(wildcard $(VMLINUX_BTF_PATHS))) .PHONY: $(OUTPUT)/runqslower $(OUTPUT)/runqslower: force - $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \ - OUTPUT=$(CURDIR)/tools/ + $(Q)$(MAKE) $(submake_extras) -C $(TOOLSDIR)/bpf/runqslower \ + OUTPUT=$(OUTPUT)/tools/ VMLINUX_BTF=$(VMLINUX_BTF) BPFOBJ := $(OUTPUT)/libbpf.a