diff options
author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2006-08-21 14:23:38 -0400 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-09-20 09:58:35 -0400 |
commit | d84b47115a04d9f6b0da777e8aa8cd930d5b6b8b (patch) | |
tree | 7ec15930b462387c6f740d9acb82c854c5cf7d87 /arch/arm/mm/mmu.c | |
parent | 1b2e2b73b4c84c918686c04a00724197036c0847 (diff) |
[ARM] Move mmu.c out of the way
Rename mmu.c to context.c - it's the ARMv6 ASID context handling
code rather than generic "mmu" handling code.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm/mmu.c')
-rw-r--r-- | arch/arm/mm/mmu.c | 45 |
1 files changed, 0 insertions, 45 deletions
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c deleted file mode 100644 index 0d90227a0a32..000000000000 --- a/arch/arm/mm/mmu.c +++ /dev/null | |||
@@ -1,45 +0,0 @@ | |||
1 | /* | ||
2 | * linux/arch/arm/mm/mmu.c | ||
3 | * | ||
4 | * Copyright (C) 2002-2003 Deep Blue Solutions Ltd, all rights reserved. | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify | ||
7 | * it under the terms of the GNU General Public License version 2 as | ||
8 | * published by the Free Software Foundation. | ||
9 | */ | ||
10 | #include <linux/init.h> | ||
11 | #include <linux/sched.h> | ||
12 | #include <linux/mm.h> | ||
13 | |||
14 | #include <asm/mmu_context.h> | ||
15 | #include <asm/tlbflush.h> | ||
16 | |||
17 | unsigned int cpu_last_asid = { 1 << ASID_BITS }; | ||
18 | |||
19 | /* | ||
20 | * We fork()ed a process, and we need a new context for the child | ||
21 | * to run in. We reserve version 0 for initial tasks so we will | ||
22 | * always allocate an ASID. | ||
23 | */ | ||
24 | void __init_new_context(struct task_struct *tsk, struct mm_struct *mm) | ||
25 | { | ||
26 | mm->context.id = 0; | ||
27 | } | ||
28 | |||
29 | void __new_context(struct mm_struct *mm) | ||
30 | { | ||
31 | unsigned int asid; | ||
32 | |||
33 | asid = ++cpu_last_asid; | ||
34 | if (asid == 0) | ||
35 | asid = cpu_last_asid = 1 << ASID_BITS; | ||
36 | |||
37 | /* | ||
38 | * If we've used up all our ASIDs, we need | ||
39 | * to start a new version and flush the TLB. | ||
40 | */ | ||
41 | if ((asid & ~ASID_MASK) == 0) | ||
42 | flush_tlb_all(); | ||
43 | |||
44 | mm->context.id = asid; | ||
45 | } | ||