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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142/* SPDX-License-Identifier: GPL-2.0-only */#ifndef _ASM_POWERPC_VDSO_PROCESSOR_H#define _ASM_POWERPC_VDSO_PROCESSOR_H
#ifndef __ASSEMBLER__
#include <asm/cputable.h>#include <asm/feature-fixups.h>
/* 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 /* __ASSEMBLER__ */
#endif /* _ASM_POWERPC_VDSO_PROCESSOR_H */