bpf: runqslower: Prefer using local vmlimux to generate vmlinux.h

Update the Makefile to prefer using $(O)/vmlinux, $(KBUILD_OUTPUT)/vmlinux (for selftests) or ../../../vmlinux. These two files should have latest definitions for vmlinux.h. Signed-off-by: Song Liu <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]> Acked-by: Andrii Nakryiko <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
bignaux · Feb 26, 2021 · 4b0d2d4 · 4b0d2d4
1 parent c540957
commit 4b0d2d4
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/tools/bpf/runqslower/Makefile b/tools/bpf/runqslower/Makefile
@@ -16,7 +16,10 @@ CFLAGS := -g -Wall
 
 # Try to detect best kernel BTF source
 KERNEL_REL := $(shell uname -r)
-VMLINUX_BTF_PATHS := /sys/kernel/btf/vmlinux /boot/vmlinux-$(KERNEL_REL)
+VMLINUX_BTF_PATHS := $(if $(O),$(O)/vmlinux)		\
+	$(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \
+	../../../vmlinux /sys/kernel/btf/vmlinux	\
+	/boot/vmlinux-$(KERNEL_REL)
 VMLINUX_BTF_PATH := $(or $(VMLINUX_BTF),$(firstword			       \
 					  $(wildcard $(VMLINUX_BTF_PATHS))))