diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/microblaze/mm/mmu_context.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/microblaze/mm/mmu_context.c | 70 |
1 files changed, 0 insertions, 70 deletions
diff --git a/ANDROID_3.4.5/arch/microblaze/mm/mmu_context.c b/ANDROID_3.4.5/arch/microblaze/mm/mmu_context.c deleted file mode 100644 index 26ff82f4..00000000 --- a/ANDROID_3.4.5/arch/microblaze/mm/mmu_context.c +++ /dev/null @@ -1,70 +0,0 @@ -/* - * This file contains the routines for handling the MMU. - * - * Copyright (C) 2007 Xilinx, Inc. All rights reserved. - * - * Derived from arch/ppc/mm/4xx_mmu.c: - * -- paulus - * - * Derived from arch/ppc/mm/init.c: - * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org) - * - * Modifications by Paul Mackerras (PowerMac) (paulus@cs.anu.edu.au) - * and Cort Dougan (PReP) (cort@cs.nmt.edu) - * Copyright (C) 1996 Paul Mackerras - * Amiga/APUS changes by Jesper Skov (jskov@cygnus.co.uk). - * - * Derived from "arch/i386/mm/init.c" - * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * - */ - -#include <linux/mm.h> -#include <linux/init.h> - -#include <asm/tlbflush.h> -#include <asm/mmu_context.h> - -mm_context_t next_mmu_context; -unsigned long context_map[LAST_CONTEXT / BITS_PER_LONG + 1]; -atomic_t nr_free_contexts; -struct mm_struct *context_mm[LAST_CONTEXT+1]; - -/* - * Initialize the context management stuff. - */ -void __init mmu_context_init(void) -{ - /* - * The use of context zero is reserved for the kernel. - * This code assumes FIRST_CONTEXT < 32. - */ - context_map[0] = (1 << FIRST_CONTEXT) - 1; - next_mmu_context = FIRST_CONTEXT; - atomic_set(&nr_free_contexts, LAST_CONTEXT - FIRST_CONTEXT + 1); -} - -/* - * Steal a context from a task that has one at the moment. - * - * This isn't an LRU system, it just frees up each context in - * turn (sort-of pseudo-random replacement :). This would be the - * place to implement an LRU scheme if anyone were motivated to do it. - */ -void steal_context(void) -{ - struct mm_struct *mm; - - /* free up context `next_mmu_context' */ - /* if we shouldn't free context 0, don't... */ - if (next_mmu_context < FIRST_CONTEXT) - next_mmu_context = FIRST_CONTEXT; - mm = context_mm[next_mmu_context]; - flush_tlb_mm(mm); - destroy_context(mm); -} |