Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
27 lines
1004 B
Makefile
27 lines
1004 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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# GCC and Clang accept backend options differently. Do not wrap in cc-option,
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# because Clang accepts "--param" even if it is unused.
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ifdef CONFIG_CC_IS_CLANG
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cc-param = -mllvm -$(1)
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else
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cc-param = --param $(1)
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endif
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# Keep most options here optional, to allow enabling more compilers if absence
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# of some options does not break KCSAN nor causes false positive reports.
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kcsan-cflags := -fsanitize=thread -fno-optimize-sibling-calls \
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$(call cc-option,$(call cc-param,tsan-compound-read-before-write=1),$(call cc-option,$(call cc-param,tsan-instrument-read-before-write=1))) \
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$(call cc-param,tsan-distinguish-volatile=1)
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ifdef CONFIG_CC_IS_GCC
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# GCC started warning about operations unsupported by the TSan runtime. But
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# KCSAN != TSan, so just ignore these warnings.
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kcsan-cflags += -Wno-tsan
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endif
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ifndef CONFIG_KCSAN_WEAK_MEMORY
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kcsan-cflags += $(call cc-option,$(call cc-param,tsan-instrument-func-entry-exit=0))
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endif
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export CFLAGS_KCSAN := $(kcsan-cflags)
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