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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930/* SPDX-License-Identifier: GPL-2.0-only */#ifndef __ASM_VDSO_PROCESSOR_H#define __ASM_VDSO_PROCESSOR_H
#ifndef __ASSEMBLER__
#include <asm/barrier.h>#include <asm/errata_list.h>#include <asm/insn-def.h>
static inline void cpu_relax(void){#ifdef __riscv_muldiv int dummy; /* In lieu of a halt instruction, induce a long-latency stall. */ __asm__ __volatile__ ("div %0, %0, zero" : "=r" (dummy));#endif
/* * Reduce instruction retirement. * This assumes the PC changes. */ ALT_RISCV_PAUSE(); barrier();}
#endif /* __ASSEMBLER__ */
#endif /* __ASM_VDSO_PROCESSOR_H */