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e61938a9 MD |
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _LINUX_SYNC_CORE_H | |
3 | #define _LINUX_SYNC_CORE_H | |
4 | ||
5 | #ifdef CONFIG_ARCH_HAS_SYNC_CORE_BEFORE_USERMODE | |
6 | #include <asm/sync_core.h> | |
7 | #else | |
8 | /* | |
9 | * This is a dummy sync_core_before_usermode() implementation that can be used | |
10 | * on all architectures which return to user-space through core serializing | |
11 | * instructions. | |
12 | * If your architecture returns to user-space through non-core-serializing | |
13 | * instructions, you need to write your own functions. | |
14 | */ | |
15 | static inline void sync_core_before_usermode(void) | |
16 | { | |
17 | } | |
18 | #endif | |
19 | ||
4ff4c745 AP |
20 | #ifdef CONFIG_ARCH_HAS_PREPARE_SYNC_CORE_CMD |
21 | #include <asm/sync_core.h> | |
22 | #else | |
23 | /* | |
24 | * This is a dummy prepare_sync_core_cmd() implementation that can be used on | |
25 | * all architectures which provide unconditional core serializing instructions | |
26 | * in switch_mm(). | |
27 | * If your architecture doesn't provide such core serializing instructions in | |
28 | * switch_mm(), you may need to write your own functions. | |
29 | */ | |
30 | static inline void prepare_sync_core_cmd(struct mm_struct *mm) | |
31 | { | |
32 | } | |
33 | #endif | |
e61938a9 | 34 | |
4ff4c745 | 35 | #endif /* _LINUX_SYNC_CORE_H */ |