X-Git-Url: http://git.cascardo.info/?a=blobdiff_plain;f=include%2Fasm-m68k%2Fsystem.h;h=caa9b1663e452d509c9c2055335442ff44631edb;hb=0e1e7c7a739562a321fda07c7cd2a97a7114f8f8;hp=243dd13e6bfc0895fcf0cfcd7081ac333a2f07bf;hpb=9ef308946fa8390136130a886b0d9a57867a747a;p=cascardo%2Flinux.git diff --git a/include/asm-m68k/system.h b/include/asm-m68k/system.h index 243dd13e6bfc..caa9b1663e45 100644 --- a/include/asm-m68k/system.h +++ b/include/asm-m68k/system.h @@ -46,6 +46,22 @@ asmlinkage void resume(void); } while (0) +/* + * Force strict CPU ordering. + * Not really required on m68k... + */ +#define nop() do { asm volatile ("nop"); barrier(); } while (0) +#define mb() barrier() +#define rmb() barrier() +#define wmb() barrier() +#define read_barrier_depends() ((void)0) +#define set_mb(var, value) ({ (var) = (value); wmb(); }) + +#define smp_mb() barrier() +#define smp_rmb() barrier() +#define smp_wmb() barrier() +#define smp_read_barrier_depends() ((void)0) + /* interrupt control.. */ #if 0 #define local_irq_enable() asm volatile ("andiw %0,%%sr": : "i" (ALLOWINT) : "memory") @@ -70,25 +86,7 @@ static inline int irqs_disabled(void) /* For spinlocks etc */ #define local_irq_save(x) ({ local_save_flags(x); local_irq_disable(); }) -/* - * Force strict CPU ordering. - * Not really required on m68k... - */ -#define nop() do { asm volatile ("nop"); barrier(); } while (0) -#define mb() barrier() -#define rmb() barrier() -#define wmb() barrier() -#define read_barrier_depends() ((void)0) -#define set_mb(var, value) ({ (var) = (value); wmb(); }) - -#define smp_mb() barrier() -#define smp_rmb() barrier() -#define smp_wmb() barrier() -#define smp_read_barrier_depends() ((void)0) - - #define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)))) -#define tas(ptr) (xchg((ptr),1)) struct __xchg_dummy { unsigned long a[100]; }; #define __xg(x) ((volatile struct __xchg_dummy *)(x))