diff mbox series

[bpf-next,v5,01/12] kbuild: bpf: Tell pahole to DECL_TAG kfuncs

Message ID 324aac5c627bddb80d9968c30df6382846994cc8.1718207789.git.dxu@dxuuu.xyz (mailing list archive)
State Accepted
Commit ebb79e96f1ea454fbcc8fe27dfe44e751bd74b4b
Delegated to: BPF
Headers show
Series bpf: Support dumping kfunc prototypes from BTF | expand

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netdev/tree_selection success Clearly marked for bpf-next, async
netdev/apply success Patch already applied to bpf-next-0

Commit Message

Daniel Xu June 12, 2024, 3:58 p.m. UTC 
With [0], pahole can now discover kfuncs and inject DECL_TAG
into BTF. With this commit, we will start shipping said DECL_TAGs
to downstream consumers if pahole supports it.

This is useful for feature probing kfuncs as well as generating
compilable prototypes. This is particularly important as kfuncs
do not have stable ABI.

[0]: https://git.kernel.org/pub/scm/devel/pahole/pahole.git/commit/?id=72e88f29c6f7e14201756e65bd66157427a61aaf

Signed-off-by: Daniel Xu <dxu@dxuuu.xyz>
---
 scripts/Makefile.btf | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/scripts/Makefile.btf b/scripts/Makefile.btf
index bca8a8f26ea4..2597e3d4d6e0 100644
--- a/scripts/Makefile.btf
+++ b/scripts/Makefile.btf
@@ -19,7 +19,7 @@  pahole-flags-$(call test-ge, $(pahole-ver), 125)	+= --skip_encoding_btf_inconsis
 else
 
 # Switch to using --btf_features for v1.26 and later.
-pahole-flags-$(call test-ge, $(pahole-ver), 126)  = -j --btf_features=encode_force,var,float,enum64,decl_tag,type_tag,optimized_func,consistent_func
+pahole-flags-$(call test-ge, $(pahole-ver), 126)  = -j --btf_features=encode_force,var,float,enum64,decl_tag,type_tag,optimized_func,consistent_func,decl_tag_kfuncs
 
 endif