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powerpc: clean up asm/switch_to.h

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Remove a bunch of unnecessary fallback functions and group
things in a more logical way.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Anton Blanchard 2015-10-29 11:44:11 +11:00 committed by Michael Ellerman
parent f3d885ccba
commit d1e1cf2e38
2 changed files with 12 additions and 27 deletions
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37
arch/powerpc/include/asm/switch_to.h
View File

@ -14,23 +14,18 @@ extern struct task_struct *__switch_to(struct task_struct *,
struct task_struct *);
#define switch_to(prev, next, last) ((last) = __switch_to((prev), (next)))
struct thread_struct;
extern struct task_struct *_switch(struct thread_struct *prev,
struct thread_struct *next);
extern void enable_kernel_fp(void);
extern void enable_kernel_altivec(void);
extern void enable_kernel_vsx(void);
extern int emulate_altivec(struct pt_regs *);
extern void __giveup_vsx(struct task_struct *);
extern void giveup_vsx(struct task_struct *);
extern void enable_kernel_spe(void);
extern void load_up_spe(struct task_struct *);
extern void giveup_all(struct task_struct *);
extern void flush_all_to_thread(struct task_struct *);
extern void switch_booke_debug_regs(struct debug_reg *new_debug);
extern int emulate_altivec(struct pt_regs *);
extern void flush_all_to_thread(struct task_struct *);
extern void giveup_all(struct task_struct *);
#ifdef CONFIG_PPC_FPU
extern void enable_kernel_fp(void);
extern void flush_fp_to_thread(struct task_struct *);
extern void giveup_fpu(struct task_struct *);
extern void __giveup_fpu(struct task_struct *);
@ -38,14 +33,12 @@ static inline void disable_kernel_fp(void)
{
msr_check_and_clear(MSR_FP);
}
#else
static inline void flush_fp_to_thread(struct task_struct *t) { }
static inline void giveup_fpu(struct task_struct *t) { }
static inline void __giveup_fpu(struct task_struct *t) { }
#endif
#ifdef CONFIG_ALTIVEC
extern void enable_kernel_altivec(void);
extern void flush_altivec_to_thread(struct task_struct *);
extern void giveup_altivec(struct task_struct *);
extern void __giveup_altivec(struct task_struct *);
@ -53,25 +46,21 @@ static inline void disable_kernel_altivec(void)
{
msr_check_and_clear(MSR_VEC);
}
#else
static inline void flush_altivec_to_thread(struct task_struct *t) { }
static inline void giveup_altivec(struct task_struct *t) { }
static inline void __giveup_altivec(struct task_struct *t) { }
#endif
#ifdef CONFIG_VSX
extern void enable_kernel_vsx(void);
extern void flush_vsx_to_thread(struct task_struct *);
extern void giveup_vsx(struct task_struct *);
extern void __giveup_vsx(struct task_struct *);
static inline void disable_kernel_vsx(void)
{
msr_check_and_clear(MSR_FP|MSR_VEC|MSR_VSX);
}
#else
static inline void flush_vsx_to_thread(struct task_struct *t)
{
}
#endif
#ifdef CONFIG_SPE
extern void enable_kernel_spe(void);
extern void flush_spe_to_thread(struct task_struct *);
extern void giveup_spe(struct task_struct *);
extern void __giveup_spe(struct task_struct *);
@ -79,10 +68,6 @@ static inline void disable_kernel_spe(void)
{
msr_check_and_clear(MSR_SPE);
}
#else
static inline void flush_spe_to_thread(struct task_struct *t) { }
static inline void giveup_spe(struct task_struct *t) { }
static inline void __giveup_spe(struct task_struct *t) { }
#endif
static inline void clear_task_ebb(struct task_struct *t)

2
arch/powerpc/kernel/process.c
View File

@ -174,7 +174,6 @@ void flush_fp_to_thread(struct task_struct *tsk)
}
}
EXPORT_SYMBOL_GPL(flush_fp_to_thread);
#endif /* CONFIG_PPC_FPU */
void enable_kernel_fp(void)
{
@ -186,6 +185,7 @@ void enable_kernel_fp(void)
__giveup_fpu(current);
}
EXPORT_SYMBOL(enable_kernel_fp);
#endif /* CONFIG_PPC_FPU */
#ifdef CONFIG_ALTIVEC
void giveup_altivec(struct task_struct *tsk)