Greg Kroah-Hartman
d69a93709f
Link: https://lore.kernel.org/r/20260528194638.371537336@linuxfoundation.org Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Pavel Machek (CIP) <pavel@nabladev.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Wentao Guan <guanwentao@uniontech.com> Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Mark Brown <broonie@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
25 lines
808 B
Makefile
25 lines
808 B
Makefile
# 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=true
|
|
|
|
ifndef CONFIG_DEBUG_INFO
|
|
CFLAGS_AUTOFDO_CLANG += -gmlt
|
|
endif
|
|
|
|
ifdef CLANG_AUTOFDO_PROFILE
|
|
CFLAGS_AUTOFDO_CLANG += -fprofile-sample-use=$(CLANG_AUTOFDO_PROFILE) -ffunction-sections
|
|
CFLAGS_AUTOFDO_CLANG += -fsplit-machine-functions
|
|
endif
|
|
|
|
ifdef CONFIG_LTO_CLANG_THIN
|
|
ifdef CLANG_AUTOFDO_PROFILE
|
|
KBUILD_LDFLAGS += --lto-sample-profile=$(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-functions
|
|
endif
|
|
|
|
export CFLAGS_AUTOFDO_CLANG
|