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Commit e102f30f authored by Ingo Molnar's avatar Ingo Molnar
Browse files

x86/fpu: Move fpu_copy() to fpu/core.c 



Move fpu_copy() where its only user is.

Beyond readability this also speeds up compilation, as fpu-internal.h
is included in over a dozen .c files.

Reviewed-by: default avatarBorislav 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: default avatarIngo Molnar <mingo@kernel.org>
parent 6522d783

arch/x86/include/asm/fpu-internal.h

+0 −14
Original line number Diff line number Diff line
@@ -565,20 +565,6 @@ extern int fpstate_alloc(struct fpu *fpu); 
extern void fpstate_free(struct fpu *fpu);

extern int fpu__copy(struct task_struct *dst, struct task_struct *src);



static inline void fpu_copy(struct task_struct *dst, struct task_struct *src)

{

	if (use_eager_fpu()) {

		memset(&dst->thread.fpu.state->xsave, 0, xstate_size);

		__save_fpu(dst);

	} else {

		struct fpu *dfpu = &dst->thread.fpu;

		struct fpu *sfpu = &src->thread.fpu;



		fpu__save(src);

		memcpy(dfpu->state, sfpu->state, xstate_size);

	}

}



static inline unsigned long

alloc_mathframe(unsigned long sp, int ia32_frame, unsigned long *buf_fx,

		unsigned long *size)

arch/x86/kernel/fpu/core.c

+14 −0
Original line number Diff line number Diff line
@@ -203,6 +203,20 @@ void fpstate_free(struct fpu *fpu) 
}

EXPORT_SYMBOL_GPL(fpstate_free);



static void fpu_copy(struct task_struct *dst, struct task_struct *src)

{

	if (use_eager_fpu()) {

		memset(&dst->thread.fpu.state->xsave, 0, xstate_size);

		__save_fpu(dst);

	} else {

		struct fpu *dfpu = &dst->thread.fpu;

		struct fpu *sfpu = &src->thread.fpu;



		fpu__save(src);

		memcpy(dfpu->state, sfpu->state, xstate_size);

	}

}



int fpu__copy(struct task_struct *dst, struct task_struct *src)

{

	dst->thread.fpu.counter = 0;