x86/fpu: Remove __save_init_fpu()

__save_init_fpu() is just a trivial wrapper around fpu_save_init().

Remove the extra layer of obfuscation.

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>

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

@@ -295,11 +295,6 @@ static inline int fpu_save_init(struct fpu *fpu)
 	return 1;
 }
 
-static inline int __save_init_fpu(struct task_struct *tsk)
-{
-	return fpu_save_init(&tsk->thread.fpu);
-}
-
 static inline int fpu_restore_checking(struct fpu *fpu)
 {
 	if (use_xsave())
@@ -439,7 +434,7 @@ static inline fpu_switch_t switch_fpu_prepare(struct task_struct *old, struct ta
 		      (use_eager_fpu() || new->thread.fpu.counter > 5);
 
 	if (__thread_has_fpu(old)) {
-		if (!__save_init_fpu(old))
+		if (!fpu_save_init(&old->thread.fpu))
 			task_disable_lazy_fpu_restore(old);
 		else
 			old->thread.fpu.last_cpu = cpu;

arch/x86/kernel/fpu/core.c

@@ -97,7 +97,7 @@ void __kernel_fpu_begin(void)
 	kernel_fpu_disable();
 
 	if (__thread_has_fpu(me)) {
-		__save_init_fpu(me);
+		fpu_save_init(&me->thread.fpu);
 	} else {
 		this_cpu_write(fpu_owner_task, NULL);
 		if (!use_eager_fpu())
@@ -135,7 +135,7 @@ void fpu__save(struct task_struct *tsk)
 		if (use_eager_fpu()) {
 			__save_fpu(tsk);
 		} else {
-			__save_init_fpu(tsk);
+			fpu_save_init(&tsk->thread.fpu);
 			__thread_fpu_end(tsk);
 		}
 	}