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d677a4d60 Makefile: support flag -fsanitizer-coverage=trace-cmp ... Browse Code »

The flag enables Clang instrumentation of comparison operations
(currently not supported by GCC). This instrumentation is needed by the
new KCOV device to collect comparison operands.

Link: http://lkml.kernel.org/r/20171011095459.70721-2-glider@google.com
Signed-off-by: Victor Chibotaru
Signed-off-by: Alexander Potapenko
Cc: Dmitry Vyukov
Cc: Andrey Konovalov
Cc: Mark Rutland
Cc: Alexander Popov
Cc: Andrey Ryabinin
Cc: Kees Cook
Cc: Vegard Nossum
Cc: Quentin Casasnovas
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds

Victor Chibotaru
2017-11-18 08:10:04 +0800

Makefile.kcov 201 Bytes

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ifdef CONFIG_KCOV
CFLAGS_KCOV	:= $(call cc-option,-fsanitize-coverage=trace-pc,)
ifeq ($(CONFIG_KCOV_ENABLE_COMPARISONS),y)
CFLAGS_KCOV += $(call cc-option,-fsanitize-coverage=trace-cmp,)
endif

endif