1dfd402a4SMarco Elver# SPDX-License-Identifier: GPL-2.0 2dfd402a4SMarco Elverifdef CONFIG_KCSAN 3dfd402a4SMarco Elver 417168f5cSMarco Elver# GCC and Clang accept backend options differently. Do not wrap in cc-option, 517168f5cSMarco Elver# because Clang accepts "--param" even if it is unused. 617168f5cSMarco Elverifdef CONFIG_CC_IS_CLANG 717168f5cSMarco Elvercc-param = -mllvm -$(1) 817168f5cSMarco Elverelse 9e68dcd8eSMarco Elvercc-param = --param $(1) 1017168f5cSMarco Elverendif 1117168f5cSMarco Elver 1275d75b7aSMarco Elver# Keep most options here optional, to allow enabling more compilers if absence 1375d75b7aSMarco Elver# of some options does not break KCSAN nor causes false positive reports. 1417168f5cSMarco ElverCFLAGS_KCSAN := -fsanitize=thread \ 1575d75b7aSMarco Elver $(call cc-option,$(call cc-param,tsan-instrument-func-entry-exit=0) -fno-optimize-sibling-calls) \ 16d31d4d6bSMarco Elver $(call cc-option,$(call cc-param,tsan-instrument-read-before-write=1)) \ 1775d75b7aSMarco Elver $(call cc-param,tsan-distinguish-volatile=1) 18dfd402a4SMarco Elver 19dfd402a4SMarco Elverendif # CONFIG_KCSAN 20