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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 |
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 | |
19 | endif # CONFIG_KCSAN |