/* SPDX-License-Identifier: GPL-2.0-only */ #ifndef _ASM_POWERPC_VDSO_PROCESSOR_H #define _ASM_POWERPC_VDSO_PROCESSOR_H #ifndef __ASSEMBLY__ /* Macros for adjusting thread priority (hardware multi-threading) */ #ifdef CONFIG_PPC64 #define HMT_very_low() asm volatile("or 31, 31, 31 # very low priority") #define HMT_low() asm volatile("or 1, 1, 1 # low priority") #define HMT_medium_low() asm volatile("or 6, 6, 6 # medium low priority") #define HMT_medium() asm volatile("or 2, 2, 2 # medium priority") #define HMT_medium_high() asm volatile("or 5, 5, 5 # medium high priority") #define HMT_high() asm volatile("or 3, 3, 3 # high priority") #else #define HMT_very_low() #define HMT_low() #define HMT_medium_low() #define HMT_medium() #define HMT_medium_high() #define HMT_high() #endif #ifdef CONFIG_PPC64 #define cpu_relax() \ asm volatile(ASM_FTR_IFCLR( \ /* Pre-POWER10 uses low ; medium priority nops */ \ "or 1,1,1 ; or 2,2,2", \ /* POWER10 onward uses pause_short (wait 2,0) */ \ PPC_WAIT(2, 0), \ %0) :: "i" (CPU_FTR_ARCH_31) : "memory") #else #define cpu_relax() barrier() #endif #endif /* __ASSEMBLY__ */ #endif /* _ASM_POWERPC_VDSO_PROCESSOR_H */