x86/fpu: Simplify fpu__cpu_init()

After the latest round of cleanups, fpu__cpu_init() has become
a simple call to fpu__init_cpu().

Rename fpu__init_cpu() to fpu__cpu_init() and remove the
extra layer.
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

@@ -36,7 +36,7 @@ int ia32_setup_frame(int sig, struct ksignal *ksig,
 #define	MXCSR_DEFAULT		0x1f80
 
 extern unsigned int mxcsr_feature_mask;
-extern void fpu__cpu_init(void);
+extern void fpu__init_cpu(void);
 extern void eager_fpu_init(void);
 
 extern void fpu__init_system_xstate(void);

arch/x86/kernel/cpu/common.c

@@ -1435,7 +1435,7 @@ void cpu_init(void)
 	clear_all_debug_regs();
 	dbg_restore_debug_regs();
 
-	fpu__cpu_init();
+	fpu__init_cpu();
 
 	if (is_uv_system())
 		uv_cpu_init();
@@ -1491,7 +1491,7 @@ void cpu_init(void)
 	clear_all_debug_regs();
 	dbg_restore_debug_regs();
 
-	fpu__cpu_init();
+	fpu__init_cpu();
 }
 #endif
 

arch/x86/kernel/fpu/init.c

@@ -241,11 +241,6 @@ void fpu__init_system(void)
 	fpu__init_system_ctx_switch();
 }
 
-void fpu__cpu_init(void)
-{
-	fpu__init_cpu();
-}
-
 static int __init no_387(char *s)
 {
 	setup_clear_cpu_cap(X86_FEATURE_FPU);

arch/x86/xen/enlighten.c

@@ -1423,7 +1423,7 @@ static void xen_pvh_set_cr_flags(int cpu)
 		return;
 	/*
 	 * For BSP, PSE PGE are set in probe_page_size_mask(), for APs
-	 * set them here. For all, OSFXSR OSXMMEXCPT are set in fpu__cpu_init().
+	 * set them here. For all, OSFXSR OSXMMEXCPT are set in fpu__init_cpu().
 	*/
 	if (cpu_has_pse)
 		cr4_set_bits_and_update_boot(X86_CR4_PSE);