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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: 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 15:41:56 +02:00
parent 0afc4a941c
commit 8ffb53ab98
3 changed files with 18 additions and 8 deletions
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2
arch/x86/include/asm/fpu-internal.h
View File

@ -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)

15
arch/x86/kernel/fpu/core.c
View File

@ -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)

9
arch/x86/kernel/process.c
View File

@ -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();
}
/*