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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_SYNC_CORE_H
#define _LINUX_SYNC_CORE_H
#ifdef CONFIG_ARCH_HAS_SYNC_CORE_BEFORE_USERMODE
#include <asm/sync_core.h>
#else
/*
* This is a dummy sync_core_before_usermode() implementation that can be used
* on all architectures which return to user-space through core serializing
* instructions.
* If your architecture returns to user-space through non-core-serializing
* instructions, you need to write your own functions.
*/
static inline void sync_core_before_usermode(void)
{
}
#endif
#ifdef CONFIG_ARCH_HAS_PREPARE_SYNC_CORE_CMD
#include <asm/sync_core.h>
#else
/*
* This is a dummy prepare_sync_core_cmd() implementation that can be used on
* all architectures which provide unconditional core serializing instructions
* in switch_mm().
* If your architecture doesn't provide such core serializing instructions in
* switch_mm(), you may need to write your own functions.
*/
static inline void prepare_sync_core_cmd(struct mm_struct *mm)
{
}
#endif
#endif /* _LINUX_SYNC_CORE_H */
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