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gerrit-public.fairphone.software / kernel / msm-5.4 / 330a1eb7775ba876dbd46b9885556e57f705e3d4 / . / arch / powerpc / include / asm / switch_to.h
blob: 49a13e0ef2344fb83c6dd89ed4ab8fd179d34c01 [file] [log] [blame]
David Howellsae3a1972012-03-28 18:30:02 +0100[diff] [blame]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
7struct thread_struct;
8struct task_struct;
9struct pt_regs;
10
11extern 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
15struct thread_struct;
16extern struct task_struct *_switch(struct thread_struct *prev,
17 struct thread_struct *next);
18
19extern void giveup_fpu(struct task_struct *);
Scott Wood8fae8452011-12-20 15:34:45 +0000[diff] [blame]20extern void load_up_fpu(void);
David Howellsae3a1972012-03-28 18:30:02 +0100[diff] [blame]21extern void disable_kernel_fp(void);
22extern void enable_kernel_fp(void);
23extern void flush_fp_to_thread(struct task_struct *);
24extern void enable_kernel_altivec(void);
David Howellsae3a1972012-03-28 18:30:02 +0100[diff] [blame]25extern void load_up_altivec(struct task_struct *);
26extern int emulate_altivec(struct pt_regs *);
27extern void __giveup_vsx(struct task_struct *);
28extern void giveup_vsx(struct task_struct *);
29extern void enable_kernel_spe(void);
30extern void giveup_spe(struct task_struct *);
31extern void load_up_spe(struct task_struct *);
32
33#ifndef CONFIG_SMP
34extern void discard_lazy_cpu_state(void);
35#else
36static inline void discard_lazy_cpu_state(void)
37{
38}
39#endif
40
41#ifdef CONFIG_ALTIVEC
42extern void flush_altivec_to_thread(struct task_struct *);
Anton Blanchard8cd3c232012-04-15 20:54:59 +0000[diff] [blame]43extern void giveup_altivec(struct task_struct *);
Anton Blanchard35000872012-04-15 20:56:45 +0000[diff] [blame]44extern void giveup_altivec_notask(void);
David Howellsae3a1972012-03-28 18:30:02 +0100[diff] [blame]45#else
46static inline void flush_altivec_to_thread(struct task_struct *t)
47{
48}
Anton Blanchard8cd3c232012-04-15 20:54:59 +0000[diff] [blame]49static inline void giveup_altivec(struct task_struct *t)
50{
51}
David Howellsae3a1972012-03-28 18:30:02 +0100[diff] [blame]52#endif
53
54#ifdef CONFIG_VSX
55extern void flush_vsx_to_thread(struct task_struct *);
56#else
57static inline void flush_vsx_to_thread(struct task_struct *t)
58{
59}
60#endif
61
62#ifdef CONFIG_SPE
63extern void flush_spe_to_thread(struct task_struct *);
64#else
65static inline void flush_spe_to_thread(struct task_struct *t)
66{
67}
68#endif
69
Michael Ellerman330a1eb2013-06-28 18:15:16 +1000[diff] [blame^]70static inline void clear_task_ebb(struct task_struct *t)
71{
72#ifdef CONFIG_PPC_BOOK3S_64
73 /* EBB perf events are not inherited, so clear all EBB state. */
74 t->thread.bescr = 0;
75 t->thread.mmcr2 = 0;
76 t->thread.mmcr0 = 0;
77 t->thread.siar = 0;
78 t->thread.sdar = 0;
79 t->thread.sier = 0;
80 t->thread.used_ebb = 0;
81#endif
82}
83
David Howellsae3a1972012-03-28 18:30:02 +0100[diff] [blame]84#endif /* _ASM_POWERPC_SWITCH_TO_H */