x86/fpu: Move fpu_copy() to fpu/core.c

Move fpu_copy() where its only user is.

Beyond readability this also speeds up compilation, as fpu-internal.h
is included in over a dozen .c files.

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/include/asm/fpu-internal.h b/arch/x86/include/asm/fpu-internal.h
index 1e2b6c6..e180fb9 100644 (file)
--- a/arch/x86/include/asm/fpu-internal.h
+++ b/arch/x86/include/asm/fpu-internal.h
@@ -565,20 +565,6 @@ extern int fpstate_alloc(struct fpu *fpu);
 extern void fpstate_free(struct fpu *fpu);
 extern int fpu__copy(struct task_struct *dst, struct task_struct *src);
 
-static inline void fpu_copy(struct task_struct *dst, struct task_struct *src)
-{
-       if (use_eager_fpu()) {
-               memset(&dst->thread.fpu.state->xsave, 0, xstate_size);
-               __save_fpu(dst);
-       } else {
-               struct fpu *dfpu = &dst->thread.fpu;
-               struct fpu *sfpu = &src->thread.fpu;
-
-               fpu__save(src);
-               memcpy(dfpu->state, sfpu->state, xstate_size);
-       }
-}
-
 static inline unsigned long
 alloc_mathframe(unsigned long sp, int ia32_frame, unsigned long *buf_fx,
                unsigned long *size)

diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c
index 6ce971c..2cc2380 100644 (file)
--- a/arch/x86/kernel/fpu/core.c
+++ b/arch/x86/kernel/fpu/core.c
@@ -203,6 +203,20 @@ void fpstate_free(struct fpu *fpu)
 }
 EXPORT_SYMBOL_GPL(fpstate_free);
 
+static void fpu_copy(struct task_struct *dst, struct task_struct *src)
+{
+       if (use_eager_fpu()) {
+               memset(&dst->thread.fpu.state->xsave, 0, xstate_size);
+               __save_fpu(dst);
+       } else {
+               struct fpu *dfpu = &dst->thread.fpu;
+               struct fpu *sfpu = &src->thread.fpu;
+
+               fpu__save(src);
+               memcpy(dfpu->state, sfpu->state, xstate_size);
+       }
+}
+
 int fpu__copy(struct task_struct *dst, struct task_struct *src)
 {
        dst->thread.fpu.counter = 0;