From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: xz-dev Date: Wed, 12 Feb 2026 00:00:00 +0800 Subject: [PATCH] scripts: fix AutoFDO and Propeller support for LTO_CLANG_THIN_DIST The distributed ThinLTO patch (CONFIG_LTO_CLANG_THIN_DIST) by Rong Xu (xur@google.com) did not update Makefile.autofdo and Makefile.propeller to support the new config option. These files only check CONFIG_LTO_CLANG_THIN, causing AutoFDO and Propeller linker flags to be missing when using LTO_CLANG_THIN_DIST. This patch adds support for CONFIG_LTO_CLANG_THIN_DIST alongside CONFIG_LTO_CLANG_THIN in both Makefiles. Link: https://discourse.llvm.org/t/rfc-distributed-thinlto-build-for-kernel/85934 Link: https://discourse.llvm.org/t/rfc-distributed-thinlto-build-for-kernel/85934/5 Link: https://github.com/xur-llvm/linux/commit/d970eaf7d90863e7f2ea7bd0c8fe44d4602c2e86 Link: https://lore.kernel.org/linux-kbuild/20250420010214.1963979-1-xur@google.com/ Fixes: https://github.com/Szowisz/CachyOS-kernels/issues/35 Signed-off-by: xz-dev --- scripts/Makefile.autofdo | 2 +- scripts/Makefile.propeller | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/scripts/Makefile.autofdo b/scripts/Makefile.autofdo index aff69db208cc..111111111111 100644 --- a/scripts/Makefile.autofdo +++ b/scripts/Makefile.autofdo @@ -13,7 +13,7 @@ ifdef CLANG_AUTOFDO_PROFILE CFLAGS_AUTOFDO_CLANG += -fsplit-machine-functions endif -ifdef CONFIG_LTO_CLANG_THIN +ifneq ($(CONFIG_LTO_CLANG_THIN)$(CONFIG_LTO_CLANG_THIN_DIST),) ifdef CLANG_AUTOFDO_PROFILE KBUILD_LDFLAGS += --lto-sample-profile=$(CLANG_AUTOFDO_PROFILE) endif diff --git a/scripts/Makefile.propeller b/scripts/Makefile.propeller index 41c247750498..222222222222 100644 --- a/scripts/Makefile.propeller +++ b/scripts/Makefile.propeller @@ -25,7 +25,7 @@ ifndef CONFIG_DEBUG_INFO endif endif -ifdef CONFIG_LTO_CLANG_THIN +ifneq ($(CONFIG_LTO_CLANG_THIN)$(CONFIG_LTO_CLANG_THIN_DIST),) ifdef CLANG_PROPELLER_PROFILE_PREFIX KBUILD_LDFLAGS += --lto-basic-block-sections=$(CLANG_PROPELLER_PROFILE_PREFIX)_cc_profile.txt else -- 2.47.0