[PATCH 19/19] powerpc: clean up asm/switch_to.h
From: Anton Blanchard <hidden>
Date: 2015-10-29 01:06:57
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
Remove a bunch of unnecessary fallback functions and group things in a more logical way. Signed-off-by: Anton Blanchard <redacted> --- arch/powerpc/include/asm/switch_to.h | 35 ++++++++++------------------------- arch/powerpc/kernel/process.c | 2 +- 2 files changed, 11 insertions(+), 26 deletions(-)
diff --git a/arch/powerpc/include/asm/switch_to.h b/arch/powerpc/include/asm/switch_to.h
index 81d46a4..5b268b6 100644
--- a/arch/powerpc/include/asm/switch_to.h
+++ b/arch/powerpc/include/asm/switch_to.h@@ -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)
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index b34e1e5..1841b59 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c@@ -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)
--
2.5.0