mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
44 lines
913 B
44 lines
913 B
/* SPDX-License-Identifier: GPL-2.0 */ |
|
/* |
|
* Copied from the kernel sources: |
|
* |
|
* Copyright IBM Corp. 1999, 2009 |
|
* |
|
* Author(s): Martin Schwidefsky <[email protected]> |
|
*/ |
|
|
|
#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() |
|
|
|
#define smp_store_release(p, v) \ |
|
do { \ |
|
barrier(); \ |
|
WRITE_ONCE(*p, v); \ |
|
} while (0) |
|
|
|
#define smp_load_acquire(p) \ |
|
({ \ |
|
typeof(*p) ___p1 = READ_ONCE(*p); \ |
|
barrier(); \ |
|
___p1; \ |
|
}) |
|
|
|
#endif /* __TOOLS_LIB_ASM_BARRIER_H */
|
|
|