#ifndef __LINUX_COMPILER_H #error "Please don't include directly, include instead." #endif #define __used __attribute__((__used__)) #define __must_check __attribute__((warn_unused_result)) #define __compiler_offsetof(a,b) __builtin_offsetof(a,b) #define __always_inline inline __attribute__((always_inline)) /* * A trick to suppress uninitialized variable warning without generating any * code */ #define uninitialized_var(x) x = x /* Mark functions as cold. gcc will assume any path leading to a call to them will be unlikely. This means a lot of manual unlikely()s are unnecessary now for any paths leading to the usual suspects like BUG(), printk(), panic() etc. [but let's keep them for now for older compilers] gcc also has a __attribute__((__hot__)) to move hot functions into a special section, but I don't see any sense in this right now in the kernel context */ #define __cold __attribute__((__cold__))