diff options
author | Al Viro <viro@zeniv.linux.org.uk> | 2008-08-17 21:05:42 -0400 |
---|---|---|
committer | H. Peter Anvin <hpa@zytor.com> | 2008-10-23 01:55:20 -0400 |
commit | bb8985586b7a906e116db835c64773b7a7d51663 (patch) | |
tree | de93ae58e88cc563d95cc124a73f3930594c6100 /include/asm-x86/mmu_context_32.h | |
parent | 8ede0bdb63305d3353efd97e9af6210afb05734e (diff) |
x86, um: ... and asm-x86 move
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'include/asm-x86/mmu_context_32.h')
-rw-r--r-- | include/asm-x86/mmu_context_32.h | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/include/asm-x86/mmu_context_32.h b/include/asm-x86/mmu_context_32.h deleted file mode 100644 index cce6f6e4afd6..000000000000 --- a/include/asm-x86/mmu_context_32.h +++ /dev/null | |||
@@ -1,56 +0,0 @@ | |||
1 | #ifndef ASM_X86__MMU_CONTEXT_32_H | ||
2 | #define ASM_X86__MMU_CONTEXT_32_H | ||
3 | |||
4 | static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk) | ||
5 | { | ||
6 | #ifdef CONFIG_SMP | ||
7 | unsigned cpu = smp_processor_id(); | ||
8 | if (per_cpu(cpu_tlbstate, cpu).state == TLBSTATE_OK) | ||
9 | per_cpu(cpu_tlbstate, cpu).state = TLBSTATE_LAZY; | ||
10 | #endif | ||
11 | } | ||
12 | |||
13 | static inline void switch_mm(struct mm_struct *prev, | ||
14 | struct mm_struct *next, | ||
15 | struct task_struct *tsk) | ||
16 | { | ||
17 | int cpu = smp_processor_id(); | ||
18 | |||
19 | if (likely(prev != next)) { | ||
20 | /* stop flush ipis for the previous mm */ | ||
21 | cpu_clear(cpu, prev->cpu_vm_mask); | ||
22 | #ifdef CONFIG_SMP | ||
23 | per_cpu(cpu_tlbstate, cpu).state = TLBSTATE_OK; | ||
24 | per_cpu(cpu_tlbstate, cpu).active_mm = next; | ||
25 | #endif | ||
26 | cpu_set(cpu, next->cpu_vm_mask); | ||
27 | |||
28 | /* Re-load page tables */ | ||
29 | load_cr3(next->pgd); | ||
30 | |||
31 | /* | ||
32 | * load the LDT, if the LDT is different: | ||
33 | */ | ||
34 | if (unlikely(prev->context.ldt != next->context.ldt)) | ||
35 | load_LDT_nolock(&next->context); | ||
36 | } | ||
37 | #ifdef CONFIG_SMP | ||
38 | else { | ||
39 | per_cpu(cpu_tlbstate, cpu).state = TLBSTATE_OK; | ||
40 | BUG_ON(per_cpu(cpu_tlbstate, cpu).active_mm != next); | ||
41 | |||
42 | if (!cpu_test_and_set(cpu, next->cpu_vm_mask)) { | ||
43 | /* We were in lazy tlb mode and leave_mm disabled | ||
44 | * tlb flush IPI delivery. We must reload %cr3. | ||
45 | */ | ||
46 | load_cr3(next->pgd); | ||
47 | load_LDT_nolock(&next->context); | ||
48 | } | ||
49 | } | ||
50 | #endif | ||
51 | } | ||
52 | |||
53 | #define deactivate_mm(tsk, mm) \ | ||
54 | asm("movl %0,%%gs": :"r" (0)); | ||
55 | |||
56 | #endif /* ASM_X86__MMU_CONTEXT_32_H */ | ||