x86/fpu: Change __thread_clear_has_fpu() to 'struct fpu' parameter

We do this to make the code more readable, and also to be able to eliminate
task_struct usage from most of the FPU code.

Reviewed-by: Borislav Petkov <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Fenghua Yu <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>

diff --git a/arch/x86/include/asm/fpu-internal.h b/arch/x86/include/asm/fpu-internal.h
index c005d1fc12478d7a437fd26c441fba64dbb600bf..94c068b6238ed416a2ee8913eaf01dfff85412be 100644 (file)
--- a/arch/x86/include/asm/fpu-internal.h
+++ b/arch/x86/include/asm/fpu-internal.h
@@ -324,9 +324,9 @@ static inline int restore_fpu_checking(struct task_struct *tsk)
 }
 
 /* Must be paired with an 'stts' after! */
-static inline void __thread_clear_has_fpu(struct task_struct *tsk)
+static inline void __thread_clear_has_fpu(struct fpu *fpu)
 {
-       tsk->thread.fpu.has_fpu = 0;
+       fpu->has_fpu = 0;
        this_cpu_write(fpu_owner_task, NULL);
 }
 
@@ -346,7 +346,7 @@ static inline void __thread_set_has_fpu(struct task_struct *tsk)
  */
 static inline void __thread_fpu_end(struct task_struct *tsk)
 {
-       __thread_clear_has_fpu(tsk);
+       __thread_clear_has_fpu(&tsk->thread.fpu);
        if (!use_eager_fpu())
                stts();
 }