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[v5,bpf-next,5/6] bpf: runqslower: prefer using local vmlimux to generate vmlinux.h

Message ID 20210223222845.2866124-6-songliubraving@fb.com (mailing list archive)
State Superseded
Delegated to: BPF
Headers show
Series bpf: enable task local storage for tracing programs | expand

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netdev/tree_selection success Clearly marked for bpf-next
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netdev/cc_maintainers warning 6 maintainers not CCed: kpsingh@kernel.org yhs@fb.com kafai@fb.com jean-philippe@linaro.org john.fastabend@gmail.com sedat.dilek@gmail.com
netdev/source_inline success Was 0 now: 0
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netdev/module_param success Was 0 now: 0
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
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netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 11 lines checked
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
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Commit Message

Song Liu Feb. 23, 2021, 10:28 p.m. UTC 
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.

Acked-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Song Liu <songliubraving@fb.com>
---
 tools/bpf/runqslower/Makefile | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
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Patch

diff --git a/tools/bpf/runqslower/Makefile b/tools/bpf/runqslower/Makefile
index 9d9fb6209be1b..c96ba90c6f018 100644
--- 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))))