[mirror_ubuntu-hirsute-kernel.git] / scripts / Makefile.kcsan

# SPDX-License-Identifier: GPL-2.0
ifdef CONFIG_KCSAN

# GCC and Clang accept backend options differently. Do not wrap in cc-option,
# because Clang accepts "--param" even if it is unused.
ifdef CONFIG_CC_IS_CLANG
cc-param = -mllvm -$(1)
else
cc-param = --param -$(1)
endif

# Keep most options here optional, to allow enabling more compilers if absence
# of some options does not break KCSAN nor causes false positive reports.
CFLAGS_KCSAN := -fsanitize=thread \
	$(call cc-option,$(call cc-param,tsan-instrument-func-entry-exit=0) -fno-optimize-sibling-calls) \
	$(call cc-option,$(call cc-param,tsan-instrument-read-before-write=1)) \
	$(call cc-param,tsan-distinguish-volatile=1)

endif # CONFIG_KCSAN
Commit	Line	Data
dfd402a4 ME	1	# SPDX-License-Identifier: GPL-2.0
	2	ifdef CONFIG_KCSAN
	3
17168f5c ME	4	# GCC and Clang accept backend options differently. Do not wrap in cc-option,
	5	# because Clang accepts "--param" even if it is unused.
	6	ifdef CONFIG_CC_IS_CLANG
	7	cc-param = -mllvm -$(1)
	8	else
	9	cc-param = --param -$(1)
	10	endif
	11
75d75b7a ME	12	# Keep most options here optional, to allow enabling more compilers if absence
75d75b7a ME	13	# of some options does not break KCSAN nor causes false positive reports.
17168f5c	14	CFLAGS_KCSAN := -fsanitize=thread \
75d75b7a	15	$(call cc-option,$(call cc-param,tsan-instrument-func-entry-exit=0) -fno-optimize-sibling-calls) \
d31d4d6b	16	$(call cc-option,$(call cc-param,tsan-instrument-read-before-write=1)) \
75d75b7a	17	$(call cc-param,tsan-distinguish-volatile=1)
dfd402a4 ME	18
dfd402a4 ME	19	endif # CONFIG_KCSAN