Commit 36fe6175 authored Apr 23, 2015 by Ingo Molnar

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 <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>

parent 276983f8

arch/x86/include/asm/fpu-internal.h

+3 −3

Original line number	Diff line number	Diff line
		@@ -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();
		}