74785e79db
arch_vm_aspace_swap(). * The x86 implementation does now maintain a bit mask per vm_translation_map_arch_info indicating on which CPUs the address space is active. This allows flush_tmap() to avoid ICI for user address spaces when the team isn't currently running on any other CPU. In this context ICI is relatively expensive, particularly since we map most pages via vm_map_page() and therefore invoke flush_tmap() pretty much for every single page. This optimization speeds up a "hello world" compilation about 20% on my machine (KDEBUG turned off, freshly booted), but interestingly it has virtually no effect on the "-j2" haiku build time. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27912 a95241bf-73f2-0310-859d-f6bbb57e9c96
43 lines
1016 B
C
43 lines
1016 B
C
/*
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* Copyright 2002-2007, Axel Dörfler, axeld@pinc-software.de.
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* Distributed under the terms of the MIT License.
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*
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* Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
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* Distributed under the terms of the NewOS License.
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*/
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#ifndef KERNEL_ARCH_VM_H
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#define KERNEL_ARCH_VM_H
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#include <arch_vm.h>
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#include <SupportDefs.h>
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struct kernel_args;
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struct vm_area;
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struct vm_address_space;
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#ifdef __cplusplus
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extern "C" {
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#endif
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status_t arch_vm_init(struct kernel_args *args);
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status_t arch_vm_init_post_area(struct kernel_args *args);
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status_t arch_vm_init_end(struct kernel_args *args);
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status_t arch_vm_init_post_modules(struct kernel_args *args);
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void arch_vm_aspace_swap(struct vm_address_space *from,
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struct vm_address_space *to);
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bool arch_vm_supports_protection(uint32 protection);
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status_t arch_vm_set_memory_type(struct vm_area *area, addr_t physicalBase,
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uint32 type);
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void arch_vm_unset_memory_type(struct vm_area *area);
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#ifdef __cplusplus
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}
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#endif
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#endif /* KERNEL_ARCH_VM_H */
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