x86/fpu: Clean up eager_fpu_init() and rename it to fpu__ctx_switch_init()

It's not an xsave specific function anymore, so rename it accordingly
and also clean it up a bit:

 - remove the obsolete __init_refok, as the code paths are not
   mixed anymore

 - rename it from eager_fpu_init() to fpu__ctx_switch_init()

 - remove stray 'return;'

 - make it static to its only user

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>

diff --git a/arch/x86/kernel/fpu/init.c b/arch/x86/kernel/fpu/init.c
index fa9678f1363057f572d27e5afacbadb436f78963..d6d582080c3ba1e323545a967f190d245b036509 100644 (file)
--- a/arch/x86/kernel/fpu/init.c
+++ b/arch/x86/kernel/fpu/init.c
@@ -167,7 +167,7 @@ __setup("eagerfpu=", eager_fpu_setup);
  * setup_init_fpu_buf() is __init and it is OK to call it here because
  * init_xstate_ctx will be unset only once during boot.
  */
-void __init_refok eager_fpu_init(void)
+static void fpu__ctx_switch_init(void)
 {
        WARN_ON(current->thread.fpu.fpstate_active);
        current_thread_info()->status = 0;
@@ -191,10 +191,8 @@ void __init_refok eager_fpu_init(void)
 
        printk_once(KERN_INFO "x86/fpu: Using '%s' FPU context switches.\n", eagerfpu == ENABLE ? "eager" : "lazy");
 
-       if (!cpu_has_eager_fpu) {
+       if (!cpu_has_eager_fpu)
                stts();
-               return;
-       }
 }
 
 /*
@@ -214,7 +212,7 @@ void fpu__init_system(void)
 
        mxcsr_feature_mask_init();
        fpu__init_system_xstate();
-       eager_fpu_init();
+       fpu__ctx_switch_init();
 }
 
 void fpu__cpu_init(void)