From 21cb33c7e06533229df01c05248edbd23cefc89c Mon Sep 17 00:00:00 2001 From: Ihor Solodrai Date: Mon, 14 Apr 2025 11:59:18 -0700 Subject: [PATCH] kbuild, bpf: Enable --btf_features=attributes 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 Signed-off-by: Martin KaFai Lau Tested-by: Eduard Zingerman Link: https://patch.msgid.link/20250414185918.538195-1-ihor.solodrai@linux.dev --- scripts/Makefile.btf | 2 ++ 1 file changed, 2 insertions(+) diff --git a/scripts/Makefile.btf b/scripts/Makefile.btf index fbaaec2187e5..db76335dd917 100644 --- a/scripts/Makefile.btf +++ b/scripts/Makefile.btf @@ -23,6 +23,8 @@ else # Switch to using --btf_features for v1.26 and later. 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 +pahole-flags-$(call test-ge, $(pahole-ver), 130) += --btf_features=attributes + ifneq ($(KBUILD_EXTMOD),) module-pahole-flags-$(call test-ge, $(pahole-ver), 128) += --btf_features=distilled_base endif