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[bpf-next] bpftool: fix make dependencies for vmlinux.h

Message ID 20240513112658.43691-1-asavkov@redhat.com (mailing list archive)
State Accepted
Commit 83eea61776c9cb0d736cf091988fa178fdfe2b37
Delegated to: BPF
Headers show
Series [bpf-next] bpftool: fix make dependencies for vmlinux.h | expand

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Commit Message

Artem Savkov May 13, 2024, 11:26 a.m. UTC 
With pre-generated vmlinux.h there is no dependency on neither vmlinux
nor bootstrap bpftool. Define dependencies separately for both modes.
This avoids needless rebuilds in some corner cases.

Suggested-by: Jan Stancek <jstancek@redhat.com>
Signed-off-by: Artem Savkov <asavkov@redhat.com>
---
 tools/bpf/bpftool/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Comments

Quentin Monnet May 13, 2024, 11:34 a.m. UTC | #1 
2024-05-13 12:27 UTC+0100 ~ Artem Savkov <asavkov@redhat.com>
> With pre-generated vmlinux.h there is no dependency on neither vmlinux
> nor bootstrap bpftool. Define dependencies separately for both modes.
> This avoids needless rebuilds in some corner cases.
> 
> Suggested-by: Jan Stancek <jstancek@redhat.com>
> Signed-off-by: Artem Savkov <asavkov@redhat.com>


Looks good, thank you.

Acked-by: Quentin Monnet <qmo@kernel.org>
patchwork-bot+netdevbpf@kernel.org May 17, 2024, 3:10 a.m. UTC | #2 
Hello:

This patch was applied to bpf/bpf-next.git (master)
by Andrii Nakryiko <andrii@kernel.org>:

On Mon, 13 May 2024 13:26:58 +0200 you wrote:
> With pre-generated vmlinux.h there is no dependency on neither vmlinux
> nor bootstrap bpftool. Define dependencies separately for both modes.
> This avoids needless rebuilds in some corner cases.
> 
> Suggested-by: Jan Stancek <jstancek@redhat.com>
> Signed-off-by: Artem Savkov <asavkov@redhat.com>
> 
> [...]

Here is the summary with links:
  - [bpf-next] bpftool: fix make dependencies for vmlinux.h
    https://git.kernel.org/bpf/bpf-next/c/83eea61776c9

You are awesome, thank you!
diff mbox series

Patch

diff --git a/tools/bpf/bpftool/Makefile b/tools/bpf/bpftool/Makefile
index dfa4f1bebbb31..ba927379eb201 100644
--- a/tools/bpf/bpftool/Makefile
+++ b/tools/bpf/bpftool/Makefile
@@ -204,10 +204,11 @@  ifeq ($(feature-clang-bpf-co-re),1)
 
 BUILD_BPF_SKELS := 1
 
-$(OUTPUT)vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL_BOOTSTRAP)
 ifeq ($(VMLINUX_H),)
+$(OUTPUT)vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL_BOOTSTRAP)
 	$(QUIET_GEN)$(BPFTOOL_BOOTSTRAP) btf dump file $< format c > $@
 else
+$(OUTPUT)vmlinux.h: $(VMLINUX_H)
 	$(Q)cp "$(VMLINUX_H)" $@
 endif