diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2007-10-11 11:16:12 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2007-10-11 11:16:12 +0200 |
| commit | b2110a17787f1eb6a60f52e12b119d2ef3013bc2 (patch) | |
| tree | e2c46d1f3031cb2fa2a81eb277274bd85cc8c5f0 /arch/x86_64/mm/mmap.c | |
| parent | 4391e4cc250a61e925bec05f11f9b1c0a8277ec4 (diff) | |
| download | op-kernel-dev-b2110a17787f1eb6a60f52e12b119d2ef3013bc2.zip op-kernel-dev-b2110a17787f1eb6a60f52e12b119d2ef3013bc2.tar.gz | |
x86_64: prepare shared mm/mmap.c
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86_64/mm/mmap.c')
| -rw-r--r-- | arch/x86_64/mm/mmap.c | 29 |
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 80bba0d..0000000 --- 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; -} - |
