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21cb33c7e0
pahole v1.30 has a BTF encoding feature for arbitrary attributes, used in particular for tagging bpf_arena_alloc_pages and bpf_arena_free_pages BPF kfuncs [1][2]. Enable it for the kernel build. [1] https://lore.kernel.org/bpf/20250130201239.1429648-1-ihor.solodrai@linux.dev/ [2] https://lore.kernel.org/bpf/20250228194654.1022535-1-ihor.solodrai@linux.dev/ Signed-off-by: Ihor Solodrai <ihor.solodrai@linux.dev> Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Tested-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://patch.msgid.link/20250414185918.538195-1-ihor.solodrai@linux.dev
38 lines
1.2 KiB
Makefile
38 lines
1.2 KiB
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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JOBS := $(patsubst -j%,%,$(filter -j%,$(MAKEFLAGS)))
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ifeq ($(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, $(pahole-ver), 122) += -j$(JOBS)
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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, $(pahole-ver), 126) = -j$(JOBS) --btf_features=encode_force,var,float,enum64,decl_tag,type_tag,optimized_func,consistent_func,decl_tag_kfuncs
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pahole-flags-$(call test-ge, $(pahole-ver), 130) += --btf_features=attributes
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ifneq ($(KBUILD_EXTMOD),)
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module-pahole-flags-$(call test-ge, $(pahole-ver), 128) += --btf_features=distilled_base
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endif
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endif
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pahole-flags-$(CONFIG_PAHOLE_HAS_LANG_EXCLUDE) += --lang_exclude=rust
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export PAHOLE_FLAGS := $(pahole-flags-y)
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export MODULE_PAHOLE_FLAGS := $(module-pahole-flags-y)
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