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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1234567891011121314151617181920212223242526272829# SPDX-License-Identifier: GPL-2.0
# Enable available and selected Clang AutoFDO features.
CFLAGS_AUTOFDO_CLANG := -fdebug-info-for-profiling -mllvm -enable-fs-discriminator=true -mllvm -improved-fs-discriminator=trueRUSTFLAGS_AUTOFDO_CLANG := $(if $(call rustc-min-version,109800),-Zdebuginfo-for-profiling,-Zdebug-info-for-profiling) -Cllvm-args=-enable-fs-discriminator=true -Cllvm-args=-improved-fs-discriminator=true
ifndef CONFIG_DEBUG_INFO CFLAGS_AUTOFDO_CLANG += -gmlt RUSTFLAGS_AUTOFDO_CLANG += -Cdebuginfo=line-tables-onlyendif
ifdef CLANG_AUTOFDO_PROFILE CFLAGS_AUTOFDO_CLANG += -fprofile-sample-use=$(CLANG_AUTOFDO_PROFILE) -ffunction-sections CFLAGS_AUTOFDO_CLANG += -fsplit-machine-functions RUSTFLAGS_AUTOFDO_CLANG += -Zprofile-sample-use=$(CLANG_AUTOFDO_PROFILE) -Zfunction-sections=y RUSTFLAGS_AUTOFDO_CLANG += -Cllvm-args=-split-machine-functionsendif
ifdef CONFIG_LTO_CLANG_THIN ifdef CLANG_AUTOFDO_PROFILE KBUILD_LDFLAGS += --lto-sample-profile=$(CLANG_AUTOFDO_PROFILE) endif KBUILD_LDFLAGS += --mllvm=-enable-fs-discriminator=true --mllvm=-improved-fs-discriminator=true -plugin-opt=thinlto KBUILD_LDFLAGS += -plugin-opt=-split-machine-functionsendif
export CFLAGS_AUTOFDO_CLANG RUSTFLAGS_AUTOFDO_CLANG