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Commit 8ffb53ab authored by Ingo Molnar's avatar Ingo Molnar
Browse files

x86/fpu: Move task_xstate_cachep handling to core.c 



This code was historically in process.c, now we have FPU core internals in
fpu/core.c instead - move it there.

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 0afc4a94

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

+2 −0
Original line number Diff line number Diff line
@@ -564,6 +564,8 @@ static inline unsigned short get_fpu_mxcsr(struct task_struct *tsk) 
	}

}



extern void fpstate_cache_init(void);



extern int fpstate_alloc(struct fpu *fpu);



static inline void fpstate_free(struct fpu *fpu)

arch/x86/kernel/fpu/core.c

+15 −0
Original line number Diff line number Diff line
@@ -147,6 +147,21 @@ void fpstate_init(struct fpu *fpu) 
}

EXPORT_SYMBOL_GPL(fpstate_init);



/*

 * FPU state allocation:

 */

struct kmem_cache *task_xstate_cachep;

EXPORT_SYMBOL_GPL(task_xstate_cachep);



void fpstate_cache_init(void)

{

	task_xstate_cachep =

		kmem_cache_create("task_xstate", xstate_size,

				  __alignof__(union thread_xstate),

				  SLAB_PANIC | SLAB_NOTRACK, NULL);

	setup_xstate_comp();

}



int fpstate_alloc(struct fpu *fpu)

{

	if (fpu->state)

arch/x86/kernel/process.c

+1 −8
Original line number Diff line number Diff line
@@ -75,9 +75,6 @@ void idle_notifier_unregister(struct notifier_block *n) 
EXPORT_SYMBOL_GPL(idle_notifier_unregister);

#endif



struct kmem_cache *task_xstate_cachep;

EXPORT_SYMBOL_GPL(task_xstate_cachep);



/*

 * this gets called so that we can store lazy state into memory and copy the

 * current task into the new thread.
@@ -106,11 +103,7 @@ void arch_release_task_struct(struct task_struct *tsk) 


void arch_task_cache_init(void)

{

        task_xstate_cachep =

        	kmem_cache_create("task_xstate", xstate_size,

				  __alignof__(union thread_xstate),

				  SLAB_PANIC | SLAB_NOTRACK, NULL);

	setup_xstate_comp();

	fpstate_cache_init();

}



/*