21 lines
437 B
C
21 lines
437 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
#ifndef __ASM_VDSO_PROCESSOR_H
|
|
#define __ASM_VDSO_PROCESSOR_H
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
#include <asm/barrier.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
|
|
barrier();
|
|
}
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#endif /* __ASM_VDSO_PROCESSOR_H */
|