abs_lowcore.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _ASM_S390_ABS_LOWCORE_H
 3#define _ASM_S390_ABS_LOWCORE_H
 4
 5#include <linux/smp.h>
 6#include <asm/lowcore.h>
 7
 8#define ABS_LOWCORE_MAP_SIZE	(NR_CPUS * sizeof(struct lowcore))
 9
10extern unsigned long __abs_lowcore;
11
12int abs_lowcore_map(int cpu, struct lowcore *lc, bool alloc);
13void abs_lowcore_unmap(int cpu);
14
15static inline struct lowcore *get_abs_lowcore(void)
16{
17	int cpu;
18
19	cpu = get_cpu();
20	return ((struct lowcore *)__abs_lowcore) + cpu;
21}
22
23static inline void put_abs_lowcore(struct lowcore *lc)
24{
25	put_cpu();
26}
27
28#endif /* _ASM_S390_ABS_LOWCORE_H */