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Diffstat (limited to 'include/linux/compiler_types.h')
-rw-r--r--include/linux/compiler_types.h100
1 files changed, 15 insertions, 85 deletions
diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h
index 97cfe29b3f0a..3439d7d0249a 100644
--- a/include/linux/compiler_types.h
+++ b/include/linux/compiler_types.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_COMPILER_TYPES_H
#define __LINUX_COMPILER_TYPES_H
@@ -54,6 +55,9 @@ extern void __chk_io_ptr(const volatile void __iomem *);
#ifdef __KERNEL__
+/* Attributes */
+#include <linux/compiler_attributes.h>
+
/* Compiler specific macros. */
#ifdef __clang__
#include <linux/compiler-clang.h>
@@ -78,12 +82,6 @@ extern void __chk_io_ptr(const volatile void __iomem *);
#include <asm/compiler.h>
#endif
-/*
- * Generic compiler-independent macros required for kernel
- * build go below this comment. Actual compiler/compiler version
- * specific implementations come from the above header files
- */
-
struct ftrace_branch_data {
const char *func;
const char *file;
@@ -106,10 +104,6 @@ struct ftrace_likely_data {
unsigned long constant;
};
-/* Don't. Just don't. */
-#define __deprecated
-#define __deprecated_for_modules
-
#endif /* __KERNEL__ */
#endif /* __ASSEMBLY__ */
@@ -119,10 +113,6 @@ struct ftrace_likely_data {
* compilers. We don't consider that to be an error, so set them to nothing.
* For example, some of them are for compiler specific plugins.
*/
-#ifndef __designated_init
-# define __designated_init
-#endif
-
#ifndef __latent_entropy
# define __latent_entropy
#endif
@@ -140,17 +130,6 @@ struct ftrace_likely_data {
# define randomized_struct_fields_end
#endif
-#ifndef __visible
-#define __visible
-#endif
-
-/*
- * Assume alignment of return value.
- */
-#ifndef __assume_aligned
-#define __assume_aligned(a, ...)
-#endif
-
/* Are two types/vars the same type (ignoring qualifiers)? */
#define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
@@ -159,14 +138,6 @@ struct ftrace_likely_data {
(sizeof(t) == sizeof(char) || sizeof(t) == sizeof(short) || \
sizeof(t) == sizeof(int) || sizeof(t) == sizeof(long))
-#ifndef __attribute_const__
-#define __attribute_const__ __attribute__((__const__))
-#endif
-
-#ifndef __noclone
-#define __noclone
-#endif
-
/* Helpers for emitting diagnostics in pragmas. */
#ifndef __diag
#define __diag(string)
@@ -186,43 +157,16 @@ struct ftrace_likely_data {
#define __diag_error(compiler, version, option, comment) \
__diag_ ## compiler(version, error, option)
-/*
- * From the GCC manual:
- *
- * Many functions have no effects except the return value and their
- * return value depends only on the parameters and/or global
- * variables. Such a function can be subject to common subexpression
- * elimination and loop optimization just as an arithmetic operator
- * would be.
- * [...]
- */
-#define __pure __attribute__((pure))
-#define __aligned(x) __attribute__((aligned(x)))
-#define __printf(a, b) __attribute__((format(printf, a, b)))
-#define __scanf(a, b) __attribute__((format(scanf, a, b)))
-#define __maybe_unused __attribute__((unused))
-#define __always_unused __attribute__((unused))
-#define __mode(x) __attribute__((mode(x)))
-#define __malloc __attribute__((__malloc__))
-#define __used __attribute__((__used__))
-#define __noreturn __attribute__((noreturn))
-#define __packed __attribute__((packed))
-#define __weak __attribute__((weak))
-#define __alias(symbol) __attribute__((alias(#symbol)))
-#define __cold __attribute__((cold))
-#define __section(S) __attribute__((__section__(#S)))
-
-
#ifdef CONFIG_ENABLE_MUST_CHECK
-#define __must_check __attribute__((warn_unused_result))
+#define __must_check __attribute__((__warn_unused_result__))
#else
#define __must_check
#endif
-#if defined(CC_USING_HOTPATCH) && !defined(__CHECKER__)
+#if defined(CC_USING_HOTPATCH)
#define notrace __attribute__((hotpatch(0, 0)))
#else
-#define notrace __attribute__((no_instrument_function))
+#define notrace __attribute__((__no_instrument_function__))
#endif
/*
@@ -231,23 +175,11 @@ struct ftrace_likely_data {
* stack and frame pointer being set up and there is no chance to
* restore the lr register to the value before mcount was called.
*/
-#define __naked __attribute__((naked)) notrace
+#define __naked __attribute__((__naked__)) notrace
#define __compiler_offsetof(a, b) __builtin_offsetof(a, b)
/*
- * Feature detection for gnu_inline (gnu89 extern inline semantics). Either
- * __GNUC_STDC_INLINE__ is defined (not using gnu89 extern inline semantics,
- * and we opt in to the gnu89 semantics), or __GNUC_STDC_INLINE__ is not
- * defined so the gnu89 semantics are the default.
- */
-#ifdef __GNUC_STDC_INLINE__
-# define __gnu_inline __attribute__((gnu_inline))
-#else
-# define __gnu_inline
-#endif
-
-/*
* Force always-inline if the user requests it so via the .config.
* GCC does not warn about unused static inline functions for
* -Wunused-function. This turns out to avoid the need for complex #ifdef
@@ -258,22 +190,20 @@ struct ftrace_likely_data {
* semantics rather than c99. This prevents multiple symbol definition errors
* of extern inline functions at link time.
* A lot of inline functions can cause havoc with function tracing.
+ * Do not use __always_inline here, since currently it expands to inline again
+ * (which would break users of __always_inline).
*/
#if !defined(CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING) || \
!defined(CONFIG_OPTIMIZE_INLINING)
-#define inline \
- inline __attribute__((always_inline, unused)) notrace __gnu_inline
+#define inline inline __attribute__((__always_inline__)) __gnu_inline \
+ __maybe_unused notrace
#else
-#define inline inline __attribute__((unused)) notrace __gnu_inline
+#define inline inline __gnu_inline \
+ __maybe_unused notrace
#endif
#define __inline__ inline
-#define __inline inline
-#define noinline __attribute__((noinline))
-
-#ifndef __always_inline
-#define __always_inline inline __attribute__((always_inline))
-#endif
+#define __inline inline
/*
* Rather then using noinline to prevent stack consumption, use