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x86/fpu: Factor out fpu__copy()

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Introduce fpu__copy() and use it in arch_dup_task_struct(),
thus moving another chunk of FPU logic to fpu/core.c.

Reviewed-by: Borislav Petkov <bp@alien8.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2015-04-22 15:47:05 +02:00
parent 8ffb53ab98
commit a752b53d9d
3 changed files with 20 additions and 11 deletions
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1
arch/x86/include/asm/fpu-internal.h
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@ -567,6 +567,7 @@ static inline unsigned short get_fpu_mxcsr(struct task_struct *tsk)
extern void fpstate_cache_init(void);
extern int fpstate_alloc(struct fpu *fpu);
extern int fpu__copy(struct task_struct *dst, struct task_struct *src);
static inline void fpstate_free(struct fpu *fpu)
{