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 */ 24