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