/* * Copied from the kernel sources: * * Copyright IBM Corp. 1999, 2009 * * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> */ #ifndef __TOOLS_LINUX_ASM_BARRIER_H #define __TOOLS_LINUX_ASM_BARRIER_H /* * Force strict CPU ordering. * And yes, this is required on UP too when we're talking * to devices. */ #ifdef [31mCONFIG_HAVE_MARCH_Z196_FEATURES[0m /* Fast-BCR without checkpoint synchronization */ #define __ASM_BARRIER "bcr 14,0\n" #else #define __ASM_BARRIER "bcr 15,0\n" #endif #define mb() do { asm volatile(__ASM_BARRIER : : : "memory"); } while (0) #define rmb() mb() #define wmb() mb() #endif /* __TOOLS_LIB_ASM_BARRIER_H */ |