| 12345678910111213141516171819202122232425262728293031 |
- /* SPDX-License-Identifier: GPL-2.0 */
- /*
- * 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 CONFIG_HAVE_MARCH_Z196_FEATURES
- /* 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 */
|
