Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit d1e1cf2e authored by Anton Blanchard's avatar Anton Blanchard Committed by Michael Ellerman
Browse files

powerpc: clean up asm/switch_to.h 



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

Signed-off-by: default avatarAnton Blanchard <anton@samba.org>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent f3d885cc

arch/powerpc/include/asm/switch_to.h

+10 −25
Original line number Diff line number Diff line
@@ -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 void switch_booke_debug_regs(struct debug_reg *new_debug);



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 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)

arch/powerpc/kernel/process.c

+1 −1
Original line number Diff line number Diff line
@@ -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)