| 63,6 → 63,13 |
|---|
| # include <linux/compiler-intel.h> |
| #endif |
| |
| /* Clang compiler defines __GNUC__. So we will overwrite implementations |
| * coming from above header files here |
| */ |
| #ifdef __clang__ |
| #include <linux/compiler-clang.h> |
| #endif |
| |
| /* |
| * Generic compiler-dependent macros required for kernel |
| * build go below this comment. Actual compiler/compiler version |
| 170,6 → 177,10 |
|---|
| (typeof(ptr)) (__ptr + (off)); }) |
| #endif |
| |
| #ifndef OPTIMIZER_HIDE_VAR |
| #define OPTIMIZER_HIDE_VAR(var) barrier() |
| #endif |
| |
| /* Not-quite-unique ID. */ |
| #ifndef __UNIQUE_ID |
| # define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __LINE__) |
| 298,6 → 309,11 |
|---|
| # define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b)) |
| #endif |
| |
| /* Is this type a native word size -- useful for atomic operations */ |
| #ifndef __native_word |
| # define __native_word(t) (sizeof(t) == sizeof(int) || sizeof(t) == sizeof(long)) |
| #endif |
| |
| /* Compile time object size, -1 for unknown */ |
| #ifndef __compiletime_object_size |
| # define __compiletime_object_size(obj) -1 |
| 307,9 → 323,18 |
|---|
| #endif |
| #ifndef __compiletime_error |
| # define __compiletime_error(message) |
| /* |
| * Sparse complains of variable sized arrays due to the temporary variable in |
| * __compiletime_assert. Unfortunately we can't just expand it out to make |
| * sparse see a constant array size without breaking compiletime_assert on old |
| * versions of GCC (e.g. 4.2.4), so hide the array from sparse altogether. |
| */ |
| # ifndef __CHECKER__ |
| # define __compiletime_error_fallback(condition) \ |
| do { ((void)sizeof(char[1 - 2 * condition])); } while (0) |
| #else |
| # endif |
| #endif |
| #ifndef __compiletime_error_fallback |
| # define __compiletime_error_fallback(condition) do { } while (0) |
| #endif |
| |
| 337,6 → 362,10 |
|---|
| #define compiletime_assert(condition, msg) \ |
| _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) |
| |
| #define compiletime_assert_atomic_type(t) \ |
| compiletime_assert(__native_word(t), \ |
| "Need native word sized stores/loads for atomicity.") |
| |
| /* |
| * Prevent the compiler from merging or refetching accesses. The compiler |
| * is also forbidden from reordering successive instances of ACCESS_ONCE(), |
| 354,7 → 383,9 |
|---|
| /* Ignore/forbid kprobes attach on very low level functions marked by this attribute: */ |
| #ifdef CONFIG_KPROBES |
| # define __kprobes __attribute__((__section__(".kprobes.text"))) |
| # define nokprobe_inline __always_inline |
| #else |
| # define __kprobes |
| # define nokprobe_inline inline |
| #endif |
| #endif /* __LINUX_COMPILER_H */ |