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21 lines
437 B
21 lines
437 B
/* SPDX-License-Identifier: GPL-2.0-only */ |
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#ifndef __ASM_VDSO_PROCESSOR_H |
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#define __ASM_VDSO_PROCESSOR_H |
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#ifndef __ASSEMBLY__ |
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#include <asm/barrier.h> |
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static inline void cpu_relax(void) |
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{ |
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#ifdef __riscv_muldiv |
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int dummy; |
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/* In lieu of a halt instruction, induce a long-latency stall. */ |
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__asm__ __volatile__ ("div %0, %0, zero" : "=r" (dummy)); |
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#endif |
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barrier(); |
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} |
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#endif /* __ASSEMBLY__ */ |
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#endif /* __ASM_VDSO_PROCESSOR_H */
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