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pmap_zero_area (9)

>> pmap_zero_area (9) ( FreeBSD man: Ядро )

BSD mandoc

NAME



pmap_zero_page

 
pmap_zero_area

 
pmap_zero_idle

 - zero-fill a page using machine-dependent optimizations

SYNOPSIS

   #include <sys/param.h>
   #include <vm/vm.h>
   #include <vm/pmap.h>
void pmap_zero_page (vm_page_t m);
void pmap_zero_page_area (vm_page_t m int off int size);
void pmap_zero_page_idle (vm_page_t m);

DESCRIPTION

The pmap_zero_page ();
function zero-fills an entire page using machine-dependent optimizations. The pmap_zero_page_area ();
function is used to zero-fill an area of a page. The range specified must not cross a page boundary; it must be contained entirely within a single page.

The pmap_zero_page_idle ();
interface is used by the vm_pagezero process. The system-wide Giant lock should not be required to be held in order to call this interface.