File: barrier.h

package info (click to toggle)
linux 6.1.8-1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,488,076 kB
  • sloc: ansic: 23,401,844; asm: 266,744; sh: 108,976; makefile: 49,705; python: 36,927; perl: 36,810; cpp: 6,044; yacc: 4,904; lex: 2,722; awk: 1,440; ruby: 25; sed: 5
file content (23 lines) | stat: -rw-r--r-- 507 bytes parent folder | download | duplicates (23)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __BARRIER_H
#define __BARRIER_H

#define mb()	__asm__ __volatile__("mb": : :"memory")
#define rmb()	__asm__ __volatile__("mb": : :"memory")
#define wmb()	__asm__ __volatile__("wmb": : :"memory")

#define __smp_load_acquire(p)						\
({									\
	compiletime_assert_atomic_type(*p);				\
	__READ_ONCE(*p);						\
})

#ifdef CONFIG_SMP
#define __ASM_SMP_MB	"\tmb\n"
#else
#define __ASM_SMP_MB
#endif

#include <asm-generic/barrier.h>

#endif		/* __BARRIER_H */