include/linux/sync_core.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 #ifndef _LINUX_SYNC_CORE_H
0003 #define _LINUX_SYNC_CORE_H
0004
0005 #ifdef CONFIG_ARCH_HAS_SYNC_CORE_BEFORE_USERMODE
0006 #include <asm/sync_core.h>
0007 #else
0008 /*
0009  * This is a dummy sync_core_before_usermode() implementation that can be used
0010  * on all architectures which return to user-space through core serializing
0011  * instructions.
0012  * If your architecture returns to user-space through non-core-serializing
0013  * instructions, you need to write your own functions.
0014  */
0015 static inline void sync_core_before_usermode(void)
0016 {
0017 }
0018 #endif
0019
0020 #endif /* _LINUX_SYNC_CORE_H */
0021