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author | Rik van Riel <riel@redhat.com> | 2015-02-06 15:02:01 -0500 |
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committer | Borislav Petkov <bp@suse.de> | 2015-02-19 11:15:53 +0100 |
commit | 1c927eea4cad83c439cb51e9c96ad19cb005157d (patch) | |
tree | 74be5021a4867a842f4df92e1b79a53be88bfd50 /arch/x86/include/asm/fpu-internal.h | |
parent | 08a744c6bfded3d5fa66f94263f81773226113d1 (diff) | |
download | lwn-1c927eea4cad83c439cb51e9c96ad19cb005157d.tar.gz lwn-1c927eea4cad83c439cb51e9c96ad19cb005157d.zip |
x86/fpu: Move lazy restore functions up a few lines
We need another lazy restore related function, that will be called
from a function that is above where the lazy restore functions are
now. It would be nice to keep all three functions grouped together.
Signed-off-by: Rik van Riel <riel@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Link: http://lkml.kernel.org/r/1423252925-14451-5-git-send-email-riel@redhat.com
Signed-off-by: Borislav Petkov <bp@suse.de>
Diffstat (limited to 'arch/x86/include/asm/fpu-internal.h')
-rw-r--r-- | arch/x86/include/asm/fpu-internal.h | 36 |
1 files changed, 18 insertions, 18 deletions
diff --git a/arch/x86/include/asm/fpu-internal.h b/arch/x86/include/asm/fpu-internal.h index 02f2e0817918..217d6d7b9cb0 100644 --- a/arch/x86/include/asm/fpu-internal.h +++ b/arch/x86/include/asm/fpu-internal.h @@ -67,6 +67,24 @@ extern void finit_soft_fpu(struct i387_soft_struct *soft); static inline void finit_soft_fpu(struct i387_soft_struct *soft) {} #endif +/* + * Must be run with preemption disabled: this clears the fpu_owner_task, + * on this CPU. + * + * This will disable any lazy FPU state restore of the current FPU state, + * but if the current thread owns the FPU, it will still be saved by. + */ +static inline void __cpu_disable_lazy_restore(unsigned int cpu) +{ + per_cpu(fpu_owner_task, cpu) = NULL; +} + +static inline int fpu_lazy_restore(struct task_struct *new, unsigned int cpu) +{ + return new == this_cpu_read_stable(fpu_owner_task) && + cpu == new->thread.fpu.last_cpu; +} + static inline int is_ia32_compat_frame(void) { return config_enabled(CONFIG_IA32_EMULATION) && @@ -398,24 +416,6 @@ static inline void drop_init_fpu(struct task_struct *tsk) */ typedef struct { int preload; } fpu_switch_t; -/* - * Must be run with preemption disabled: this clears the fpu_owner_task, - * on this CPU. - * - * This will disable any lazy FPU state restore of the current FPU state, - * but if the current thread owns the FPU, it will still be saved by. - */ -static inline void __cpu_disable_lazy_restore(unsigned int cpu) -{ - per_cpu(fpu_owner_task, cpu) = NULL; -} - -static inline int fpu_lazy_restore(struct task_struct *new, unsigned int cpu) -{ - return new == this_cpu_read_stable(fpu_owner_task) && - cpu == new->thread.fpu.last_cpu; -} - static inline fpu_switch_t switch_fpu_prepare(struct task_struct *old, struct task_struct *new, int cpu) { fpu_switch_t fpu; |