Differential D32360 Diff 96932 sys/vm/pmap.h

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sys/vm/pmap.h

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	* First, it bounds the cost of reference bit maintenance on widely shared			* First, it bounds the cost of reference bit maintenance on widely shared
	* pages. Second, it prevents numeric overflow during maintenance of a			* pages. Second, it prevents numeric overflow during maintenance of a
	* widely shared page's "act_count" field. An overflow could result in the			* widely shared page's "act_count" field. An overflow could result in the
	* premature deactivation of the page.			* premature deactivation of the page.
	*/			*/
	#define PMAP_TS_REFERENCED_MAX 5			#define PMAP_TS_REFERENCED_MAX 5

	void pmap_activate(struct thread *td);			void pmap_activate(struct thread *td);
				void pmap_active_cpus(pmap_t pmap, cpuset_t *res);
	void pmap_advise(pmap_t pmap, vm_offset_t sva, vm_offset_t eva,			void pmap_advise(pmap_t pmap, vm_offset_t sva, vm_offset_t eva,
	int advice);			int advice);
	void pmap_align_superpage(vm_object_t, vm_ooffset_t, vm_offset_t *,			void pmap_align_superpage(vm_object_t, vm_ooffset_t, vm_offset_t *,
	vm_size_t);			vm_size_t);
	void pmap_clear_modify(vm_page_t m);			void pmap_clear_modify(vm_page_t m);
	void pmap_copy(pmap_t, pmap_t, vm_offset_t, vm_size_t, vm_offset_t);			void pmap_copy(pmap_t, pmap_t, vm_offset_t, vm_size_t, vm_offset_t);
	void pmap_copy_page(vm_page_t, vm_page_t);			void pmap_copy_page(vm_page_t, vm_page_t);
	void pmap_copy_pages(vm_page_t ma[], vm_offset_t a_offset,			void pmap_copy_pages(vm_page_t ma[], vm_offset_t a_offset,
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