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| author | Anton Blanchard <anton@samba.org> | 2015-10-29 11:44:01 +1100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2015-12-01 13:52:25 +1100 |
| commit | 98da581e0846f6d932a4bc46a55458140e20478a (patch) | |
| tree | 492f2ebbd22ed1000f2d61aa8ad9a7b3ef5f1a1b /arch/powerpc/include/asm/switch_to.h | |
| parent | b51b1153d0e78a70767441273331d2de066bb929 (diff) | |
| download | linux-98da581e0846f6d932a4bc46a55458140e20478a.tar.bz2 | |
powerpc: Move part of giveup_fpu,altivec,spe into c
Move the MSR modification into new c functions. Removing it from
the low level functions will allow us to avoid costly MSR writes
by batching them up.
Move the check_if_tm_restore_required() check into these new functions.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/switch_to.h')
| -rw-r--r-- | arch/powerpc/include/asm/switch_to.h | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/arch/powerpc/include/asm/switch_to.h b/arch/powerpc/include/asm/switch_to.h index 042aaf05a787..c2678b93bcba 100644 --- a/arch/powerpc/include/asm/switch_to.h +++ b/arch/powerpc/include/asm/switch_to.h @@ -23,28 +23,27 @@ 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 giveup_spe(struct task_struct *); extern void load_up_spe(struct task_struct *); extern void switch_booke_debug_regs(struct debug_reg *new_debug); #ifdef CONFIG_PPC_FPU extern void flush_fp_to_thread(struct task_struct *); extern void giveup_fpu(struct task_struct *); +extern void __giveup_fpu(struct task_struct *); #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 flush_altivec_to_thread(struct task_struct *); extern void giveup_altivec(struct task_struct *); +extern void __giveup_altivec(struct task_struct *); #else -static inline void flush_altivec_to_thread(struct task_struct *t) -{ -} -static inline void giveup_altivec(struct task_struct *t) -{ -} +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 @@ -57,10 +56,12 @@ static inline void flush_vsx_to_thread(struct task_struct *t) #ifdef CONFIG_SPE extern void flush_spe_to_thread(struct task_struct *); +extern void giveup_spe(struct task_struct *); +extern void __giveup_spe(struct task_struct *); #else -static inline void flush_spe_to_thread(struct task_struct *t) -{ -} +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) |