| vm_kern.c (98226) | vm_kern.c (98450) |
|---|---|
| 1/* 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * The Mach Operating System project at Carnegie-Mellon University. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 47 unchanged lines hidden (view full) --- 56 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 57 * School of Computer Science 58 * Carnegie Mellon University 59 * Pittsburgh PA 15213-3890 60 * 61 * any improvements or extensions that they make and grant Carnegie the 62 * rights to redistribute these changes. 63 * | 1/* 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * The Mach Operating System project at Carnegie-Mellon University. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 47 unchanged lines hidden (view full) --- 56 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 57 * School of Computer Science 58 * Carnegie Mellon University 59 * Pittsburgh PA 15213-3890 60 * 61 * any improvements or extensions that they make and grant Carnegie the 62 * rights to redistribute these changes. 63 * |
| 64 * $FreeBSD: head/sys/vm/vm_kern.c 98226 2002-06-14 18:21:01Z alc $ | 64 * $FreeBSD: head/sys/vm/vm_kern.c 98450 2002-06-19 20:47:18Z jeff $ |
| 65 */ 66 67/* 68 * Kernel memory management. 69 */ 70 71#include <sys/param.h> 72#include <sys/systm.h> --- 269 unchanged lines hidden (view full) --- 342 goto bad; 343 } 344 offset = addr - VM_MIN_KERNEL_ADDRESS; 345 vm_object_reference(kmem_object); 346 vm_map_insert(map, kmem_object, offset, addr, addr + size, 347 VM_PROT_ALL, VM_PROT_ALL, 0); 348 349 for (i = 0; i < size; i += PAGE_SIZE) { | 65 */ 66 67/* 68 * Kernel memory management. 69 */ 70 71#include <sys/param.h> 72#include <sys/systm.h> --- 269 unchanged lines hidden (view full) --- 342 goto bad; 343 } 344 offset = addr - VM_MIN_KERNEL_ADDRESS; 345 vm_object_reference(kmem_object); 346 vm_map_insert(map, kmem_object, offset, addr, addr + size, 347 VM_PROT_ALL, VM_PROT_ALL, 0); 348 349 for (i = 0; i < size; i += PAGE_SIZE) { |
| 350 int pflags; |
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| 350 /* 351 * Note: if M_NOWAIT specified alone, allocate from 352 * interrupt-safe queues only (just the free list). If 353 * M_USE_RESERVE is also specified, we can also 354 * allocate from the cache. Neither of the latter two 355 * flags may be specified from an interrupt since interrupts 356 * are not allowed to mess with the cache queue. 357 */ 358retry: | 351 /* 352 * Note: if M_NOWAIT specified alone, allocate from 353 * interrupt-safe queues only (just the free list). If 354 * M_USE_RESERVE is also specified, we can also 355 * allocate from the cache. Neither of the latter two 356 * flags may be specified from an interrupt since interrupts 357 * are not allowed to mess with the cache queue. 358 */ 359retry: |
| 359 m = vm_page_alloc(kmem_object, OFF_TO_IDX(offset + i), 360 ((flags & (M_NOWAIT|M_USE_RESERVE)) == M_NOWAIT) ? 361 VM_ALLOC_INTERRUPT : 362 VM_ALLOC_SYSTEM); | 360 if ((flags & (M_NOWAIT|M_USE_RESERVE)) == M_NOWAIT) 361 pflags = VM_ALLOC_INTERRUPT; 362 else 363 pflags = VM_ALLOC_SYSTEM; |
| 363 | 364 |
| 365 if (flags & M_ZERO) 366 pflags |= VM_ALLOC_ZERO; 367 368 m = vm_page_alloc(kmem_object, OFF_TO_IDX(offset + i), pflags); 369 |
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| 364 /* 365 * Ran out of space, free everything up and return. Don't need 366 * to lock page queues here as we know that the pages we got 367 * aren't on any queues. 368 */ 369 if (m == NULL) { 370 if ((flags & M_NOWAIT) == 0) { 371 vm_map_unlock(map); --- 145 unchanged lines hidden --- | 370 /* 371 * Ran out of space, free everything up and return. Don't need 372 * to lock page queues here as we know that the pages we got 373 * aren't on any queues. 374 */ 375 if (m == NULL) { 376 if ((flags & M_NOWAIT) == 0) { 377 vm_map_unlock(map); --- 145 unchanged lines hidden --- |