x86/fpu: Fold __drop_fpu() into its sole user

Fold it into drop_fpu(). Phew, one less FPU function to pay attention
to.

No functionality change.

Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Pekka Riikonen <priikone@iki.fi>
Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Suresh Siddha <sbsiddha@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 7 insertions, 10 deletions

diff --git a/arch/x86/include/asm/fpu-internal.h b/arch/x86/include/asm/fpu-internal.h
index 7d2f7fa6b2dd..2d4adff428ac 100644
--- a/arch/x86/include/asm/fpu-internal.h
+++ b/arch/x86/include/asm/fpu-internal.h
@@ -378,8 +378,14 @@ static inline void __thread_fpu_begin(struct task_struct *tsk)
         __thread_set_has_fpu(tsk);
 }
 
-static inline void __drop_fpu(struct task_struct *tsk)
+static inline void drop_fpu(struct task_struct *tsk)
 {
+        /*
+         * Forget coprocessor state..
+         */
+        preempt_disable();
+        tsk->thread.fpu_counter = 0;
+
         if (__thread_has_fpu(tsk)) {
                 /* Ignore delayed exceptions from user space */
                 asm volatile("1: fwait\n"
@@ -387,16 +393,7 @@ static inline void __drop_fpu(struct task_struct *tsk)
                              _ASM_EXTABLE(1b, 2b));
                 __thread_fpu_end(tsk);
         }
-}
 
-static inline void drop_fpu(struct task_struct *tsk)
-{
-        /*
-         * Forget coprocessor state..
-         */
-        preempt_disable();
-        tsk->thread.fpu_counter = 0;
-        __drop_fpu(tsk);
         clear_stopped_child_used_math(tsk);
         preempt_enable();
 }