projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| ae3a197e DH |
1 | /* |
| 2 | * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu> | |
| 3 | */ | |
| 4 | #ifndef _ASM_POWERPC_SWITCH_TO_H | |
| 5 | #define _ASM_POWERPC_SWITCH_TO_H | |
| 6 | ||
| 7 | struct thread_struct; | |
| 8 | struct task_struct; | |
| 9 | struct pt_regs; | |
| 10 | ||
| 11 | extern struct task_struct *__switch_to(struct task_struct *, | |
| 12 | struct task_struct *); | |
| 13 | #define switch_to(prev, next, last) ((last) = __switch_to((prev), (next))) | |
| 14 | ||
| 15 | struct thread_struct; | |
| 16 | extern struct task_struct *_switch(struct thread_struct *prev, | |
| 17 | struct thread_struct *next); | |
| 18 | ||
| 19 | extern void giveup_fpu(struct task_struct *); | |
| 8fae845f | 20 | extern void load_up_fpu(void); |
| ae3a197e DH |
21 | extern void enable_kernel_fp(void); |
| 22 | extern void flush_fp_to_thread(struct task_struct *); | |
| 23 | extern void enable_kernel_altivec(void); | |
| ae3a197e DH |
24 | extern void load_up_altivec(struct task_struct *); |
| 25 | extern int emulate_altivec(struct pt_regs *); | |
| 26 | extern void __giveup_vsx(struct task_struct *); | |
| 27 | extern void giveup_vsx(struct task_struct *); | |
| 28 | extern void enable_kernel_spe(void); | |
| 29 | extern void giveup_spe(struct task_struct *); | |
| 30 | extern void load_up_spe(struct task_struct *); | |
| 31 | ||
| 32 | #ifndef CONFIG_SMP | |
| 33 | extern void discard_lazy_cpu_state(void); | |
| 34 | #else | |
| 35 | static inline void discard_lazy_cpu_state(void) | |
| 36 | { | |
| 37 | } | |
| 38 | #endif | |
| 39 | ||
| 40 | #ifdef CONFIG_ALTIVEC | |
| 41 | extern void flush_altivec_to_thread(struct task_struct *); | |
| 8cd3c23d | 42 | extern void giveup_altivec(struct task_struct *); |
| 35000870 | 43 | extern void giveup_altivec_notask(void); |
| ae3a197e DH |
44 | #else |
| 45 | static inline void flush_altivec_to_thread(struct task_struct *t) | |
| 46 | { | |
| 47 | } | |
| 8cd3c23d AB |
48 | static inline void giveup_altivec(struct task_struct *t) |
| 49 | { | |
| 50 | } | |
| ae3a197e DH |
51 | #endif |
| 52 | ||
| 53 | #ifdef CONFIG_VSX | |
| 54 | extern void flush_vsx_to_thread(struct task_struct *); | |
| 55 | #else | |
| 56 | static inline void flush_vsx_to_thread(struct task_struct *t) | |
| 57 | { | |
| 58 | } | |
| 59 | #endif | |
| 60 | ||
| 61 | #ifdef CONFIG_SPE | |
| 62 | extern void flush_spe_to_thread(struct task_struct *); | |
| 63 | #else | |
| 64 | static inline void flush_spe_to_thread(struct task_struct *t) | |
| 65 | { | |
| 66 | } | |
| 67 | #endif | |
| 68 | ||
| 330a1eb7 ME |
69 | static inline void clear_task_ebb(struct task_struct *t) |
| 70 | { | |
| 71 | #ifdef CONFIG_PPC_BOOK3S_64 | |
| 72 | /* EBB perf events are not inherited, so clear all EBB state. */ | |
| 73 | t->thread.bescr = 0; | |
| 74 | t->thread.mmcr2 = 0; | |
| 75 | t->thread.mmcr0 = 0; | |
| 76 | t->thread.siar = 0; | |
| 77 | t->thread.sdar = 0; | |
| 78 | t->thread.sier = 0; | |
| 79 | t->thread.used_ebb = 0; | |
| 80 | #endif | |
| 81 | } | |
| 82 | ||
| ae3a197e | 83 | #endif /* _ASM_POWERPC_SWITCH_TO_H */ |