x86_64: prepare shared mm/mmap.c

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 0 insertions, 29 deletions

diff --git a/arch/x86_64/mm/mmap.c b/arch/x86_64/mm/mmap.c
deleted file mode 100644
index 80bba0dc000e..000000000000
--- a/arch/x86_64/mm/mmap.c
+++ /dev/null
@@ -1,29 +0,0 @@
-/* Copyright 2005 Andi Kleen, SuSE Labs.
- * Licensed under GPL, v.2
- */
-#include <linux/mm.h>
-#include <linux/sched.h>
-#include <linux/random.h>
-#include <asm/ia32.h>
-
-/* Notebook: move the mmap code from sys_x86_64.c over here. */
-
-void arch_pick_mmap_layout(struct mm_struct *mm)
-{
-#ifdef CONFIG_IA32_EMULATION
-        if (current_thread_info()->flags & _TIF_IA32)
-                return ia32_pick_mmap_layout(mm);
-#endif
-        mm->mmap_base = TASK_UNMAPPED_BASE;
-        if (current->flags & PF_RANDOMIZE) {
-                /* Add 28bit randomness which is about 40bits of address space
-                   because mmap base has to be page aligned.
-                   or ~1/128 of the total user VM
-                   (total user address space is 47bits) */
-                unsigned rnd = get_random_int() & 0xfffffff;
-                mm->mmap_base += ((unsigned long)rnd) << PAGE_SHIFT;
-        }
-        mm->get_unmapped_area = arch_get_unmapped_area;
-        mm->unmap_area = arch_unmap_area;
-}
-