x86/fpu: Rename __thread_fpu_end() to fpregs_deactivate()

Propagate the 'fpu->fpregs_active' naming to the high level function that
clears it.
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

@@ -335,18 +335,18 @@ static inline void __fpregs_activate(struct fpu *fpu)
  * These generally need preemption protection to work,
  * do try to avoid using these on their own.
  */
-static inline void __thread_fpu_end(struct fpu *fpu)
+static inline void fpregs_activate(struct fpu *fpu)
 {
-	__fpregs_deactivate(fpu);
 	if (!use_eager_fpu())
-		stts();
+		clts();
+	__fpregs_activate(fpu);
 }
 
-static inline void fpregs_activate(struct fpu *fpu)
+static inline void fpregs_deactivate(struct fpu *fpu)
 {
+	__fpregs_deactivate(fpu);
 	if (!use_eager_fpu())
-		clts();
-	__fpregs_activate(fpu);
+		stts();
 }
 
 static inline void drop_fpu(struct fpu *fpu)
@@ -362,7 +362,7 @@ static inline void drop_fpu(struct fpu *fpu)
 		asm volatile("1: fwait\n"
 			     "2:\n"
 			     _ASM_EXTABLE(1b, 2b));
-		__thread_fpu_end(fpu);
+		fpregs_deactivate(fpu);
 	}
 
 	fpu->fpstate_active = 0;

arch/x86/kernel/fpu/core.c

@@ -152,7 +152,7 @@ void fpu__save(struct fpu *fpu)
 			__save_fpu(fpu);
 		} else {
 			fpu_save_init(fpu);
-			__thread_fpu_end(fpu);
+			fpregs_deactivate(fpu);
 		}
 	}
 	preempt_enable();