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1/* SPDX-License-Identifier: GPL-2.0-only */
2#ifndef _ASM_POWERPC_VDSO_PROCESSOR_H
3#define _ASM_POWERPC_VDSO_PROCESSOR_H
4
5#ifndef __ASSEMBLY__
6
7/* Macros for adjusting thread priority (hardware multi-threading) */
8#define HMT_very_low() asm volatile("or 31, 31, 31 # very low priority")
9#define HMT_low() asm volatile("or 1, 1, 1 # low priority")
10#define HMT_medium_low() asm volatile("or 6, 6, 6 # medium low priority")
11#define HMT_medium() asm volatile("or 2, 2, 2 # medium priority")
12#define HMT_medium_high() asm volatile("or 5, 5, 5 # medium high priority")
13#define HMT_high() asm volatile("or 3, 3, 3 # high priority")
14
15#ifdef CONFIG_PPC64
16#define cpu_relax() do { HMT_low(); HMT_medium(); barrier(); } while (0)
17#else
18#define cpu_relax() barrier()
19#endif
20
21#endif /* __ASSEMBLY__ */
22
23#endif /* _ASM_POWERPC_VDSO_PROCESSOR_H */