| commit | e68dcd8eac63cf14745df0dc872ea479df8ed4b9 | [log] [tgz] |
|---|---|---|
| author | Marco Elver <elver@google.com> | Thu Jun 18 11:31:16 2020 +0200 |
| committer | Paul E. McKenney <paulmck@kernel.org> | Mon Jun 29 12:04:48 2020 -0700 |
| tree | 31b34235353a65a914e00575ec78f061df3bc954 | |
| parent | 56b031f0abf55254d47a329010574733fa9a27b8 [diff] |
kcsan: Re-add GCC as a supported compiler GCC version 11 recently implemented all requirements to correctly support KCSAN: 1. Correct no_sanitize-attribute inlining behaviour: https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=4089df8ef4a63126b0774c39b6638845244c20d2 2. --param=tsan-distinguish-volatile https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=ab2789ec507a94f1a75a6534bca51c7b39037ce0 3. --param=tsan-instrument-func-entry-exit https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=06712fc68dc9843d9af7c7ac10047f49d305ad76 Therefore, we can re-enable GCC for KCSAN, and document the new compiler requirements. Signed-off-by: Marco Elver <elver@google.com> Cc: Martin Liska <mliska@suse.cz> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
diff --git a/lib/Kconfig.kcsan b/lib/Kconfig.kcsan index 3f3b5bc..3d282d51 100644 --- a/lib/Kconfig.kcsan +++ b/lib/Kconfig.kcsan
@@ -4,7 +4,8 @@ bool config HAVE_KCSAN_COMPILER - def_bool CC_IS_CLANG && $(cc-option,-fsanitize=thread -mllvm -tsan-distinguish-volatile=1) + def_bool (CC_IS_CLANG && $(cc-option,-fsanitize=thread -mllvm -tsan-distinguish-volatile=1)) || \ + (CC_IS_GCC && $(cc-option,-fsanitize=thread --param tsan-distinguish-volatile=1)) help For the list of compilers that support KCSAN, please see <file:Documentation/dev-tools/kcsan.rst>.