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ebb79e96f1
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> Link: https://lore.kernel.org/r/324aac5c627bddb80d9968c30df6382846994cc8.1718207789.git.dxu@dxuuu.xyz Signed-off-by: Alexei Starovoitov <ast@kernel.org>
29 lines
917 B
Makefile
29 lines
917 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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pahole-ver := $(CONFIG_PAHOLE_VERSION)
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pahole-flags-y :=
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ifeq ($(call test-le, $(pahole-ver), 125),y)
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# pahole 1.18 through 1.21 can't handle zero-sized per-CPU vars
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ifeq ($(call test-le, $(pahole-ver), 121),y)
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pahole-flags-$(call test-ge, $(pahole-ver), 118) += --skip_encoding_btf_vars
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endif
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pahole-flags-$(call test-ge, $(pahole-ver), 121) += --btf_gen_floats
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pahole-flags-$(call test-ge, $(pahole-ver), 122) += -j
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pahole-flags-$(call test-ge, $(pahole-ver), 125) += --skip_encoding_btf_inconsistent_proto --btf_gen_optimized
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else
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# Switch to using --btf_features for v1.26 and later.
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pahole-flags-$(call test-ge, $(pahole-ver), 126) = -j --btf_features=encode_force,var,float,enum64,decl_tag,type_tag,optimized_func,consistent_func,decl_tag_kfuncs
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endif
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pahole-flags-$(CONFIG_PAHOLE_HAS_LANG_EXCLUDE) += --lang_exclude=rust
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export PAHOLE_FLAGS := $(pahole-flags-y)
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