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authorDmitry Torokhov <dmitry.torokhov@gmail.com>2022-02-28 23:12:55 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2022-02-28 23:12:55 -0800
commit1136fa0c07de570dc17858745af8be169d1440ba (patch)
tree3221b003517dd3cb13df5ba4b85637cd9ed82692 /include/linux/compiler_attributes.h
parentba115adf61b36b8c167126425a62b0efc23f72c0 (diff)
parent754e0b0e35608ed5206d6a67a791563c631cec07 (diff)
Merge tag 'v5.17-rc4' into for-linus
Merge with mainline to get the Intel ASoC generic helpers header and other changes.
Diffstat (limited to 'include/linux/compiler_attributes.h')
-rw-r--r--include/linux/compiler_attributes.h29
1 files changed, 28 insertions, 1 deletions
diff --git a/include/linux/compiler_attributes.h b/include/linux/compiler_attributes.h
index e6ec63403965..37e260020221 100644
--- a/include/linux/compiler_attributes.h
+++ b/include/linux/compiler_attributes.h
@@ -34,6 +34,15 @@
#define __aligned_largest __attribute__((__aligned__))
/*
+ * Note: do not use this directly. Instead, use __alloc_size() since it is conditionally
+ * available and includes other attributes.
+ *
+ * gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-alloc_005fsize-function-attribute
+ * clang: https://clang.llvm.org/docs/AttributeReference.html#alloc-size
+ */
+#define __alloc_size__(x, ...) __attribute__((__alloc_size__(x, ## __VA_ARGS__)))
+
+/*
* Note: users of __always_inline currently do not write "inline" themselves,
* which seems to be required by gcc to apply the attribute according
* to its docs (and also "warning: always_inline function might not be
@@ -104,7 +113,6 @@
#define __deprecated
/*
- * Optional: only supported since gcc >= 5.1
* Optional: not supported by clang
* Optional: not supported by icc
*
@@ -153,6 +161,7 @@
/*
* gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-malloc-function-attribute
+ * clang: https://clang.llvm.org/docs/AttributeReference.html#malloc
*/
#define __malloc __attribute__((__malloc__))
@@ -300,6 +309,24 @@
#endif
/*
+ * Optional: only supported since clang >= 14.0
+ *
+ * clang: https://clang.llvm.org/docs/AttributeReference.html#disable-sanitizer-instrumentation
+ *
+ * disable_sanitizer_instrumentation is not always similar to
+ * no_sanitize((<sanitizer-name>)): the latter may still let specific sanitizers
+ * insert code into functions to prevent false positives. Unlike that,
+ * disable_sanitizer_instrumentation prevents all kinds of instrumentation to
+ * functions with the attribute.
+ */
+#if __has_attribute(disable_sanitizer_instrumentation)
+# define __disable_sanitizer_instrumentation \
+ __attribute__((disable_sanitizer_instrumentation))
+#else
+# define __disable_sanitizer_instrumentation
+#endif
+
+/*
* gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-weak-function-attribute
* gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html#index-weak-variable-attribute
*/