Lines Matching full:area
157 * unmap_kernel_range_noflush - unmap kernel VM area
158 * @start: start of the VM area to unmap
159 * @size: size of the VM area to unmap
161 * Unmap PFN_UP(@size) pages at @addr. The VM area @addr and @size specify
275 * map_kernel_range_noflush - map kernel VM area with the specified pages
276 * @addr: start of the VM area to map
277 * @size: size of the VM area to map
281 * Map PFN_UP(@size) pages at @addr. The VM area @addr and @size specify should
442 * find a lowest match of free area.
734 * free area is inserted. If VA has been merged, it is
782 /* Point to the new merged area. */ in merge_or_add_vmap_area()
813 /* Point to the new merged area. */ in merge_or_add_vmap_area()
1083 * Returns a start address of the newly allocated area, if success.
1182 * when fit type of free area is NE_FIT_TYPE. Please note, it in alloc_vmap_area()
1360 * Finally insert or merge lazily-freed area. It is in __purge_vmap_area_lazy()
1407 * Free a vmap area, caller ensuring that the area has been unmapped
1430 * Free and unmap a vmap area
1877 * vm_area_add_early - add vmap area early during boot
1880 * This function is used to add fixed kernel vm area to vmlist before
1903 * vm_area_register_early - register vmap area early during boot
1907 * This function is used to register kernel vm area before
2011 * unmap_kernel_range - unmap kernel VM area and flush cache and TLB
2012 * @addr: start of the VM area to unmap
2013 * @size: size of the VM area to unmap
2061 struct vm_struct *area; in __get_vm_area_node() local
2073 area = kzalloc_node(sizeof(*area), gfp_mask & GFP_RECLAIM_MASK, node); in __get_vm_area_node()
2074 if (unlikely(!area)) in __get_vm_area_node()
2082 kfree(area); in __get_vm_area_node()
2088 setup_vmalloc_vm(area, va, flags, caller); in __get_vm_area_node()
2090 return area; in __get_vm_area_node()
2102 * get_vm_area - reserve a contiguous kernel virtual area
2103 * @size: size of the area
2106 * Search an area of @size in the kernel virtual mapping area,
2107 * and reserved it for out purposes. Returns the area descriptor
2110 * Return: the area descriptor on success or %NULL on failure.
2127 * find_vm_area - find a continuous kernel virtual area
2130 * Search for the kernel VM area starting at @addr, and return it.
2134 * Return: the area descriptor on success or %NULL on failure.
2148 * remove_vm_area - find and remove a continuous kernel virtual area
2151 * Search for the kernel VM area starting at @addr, and remove it.
2152 * This function returns the found VM area, but using it is NOT safe
2155 * Return: the area descriptor on success or %NULL on failure.
2181 static inline void set_area_direct_map(const struct vm_struct *area, in set_area_direct_map() argument
2186 for (i = 0; i < area->nr_pages; i++) in set_area_direct_map()
2187 if (page_address(area->pages[i])) in set_area_direct_map()
2188 set_direct_map(area->pages[i]); in set_area_direct_map()
2192 static void vm_remove_mappings(struct vm_struct *area, int deallocate_pages) in vm_remove_mappings() argument
2195 int flush_reset = area->flags & VM_FLUSH_RESET_PERMS; in vm_remove_mappings()
2199 remove_vm_area(area->addr); in vm_remove_mappings()
2206 * If not deallocating pages, just do the flush of the VM area and in vm_remove_mappings()
2219 for (i = 0; i < area->nr_pages; i++) { in vm_remove_mappings()
2220 unsigned long addr = (unsigned long)page_address(area->pages[i]); in vm_remove_mappings()
2233 set_area_direct_map(area, set_direct_map_invalid_noflush); in vm_remove_mappings()
2235 set_area_direct_map(area, set_direct_map_default_noflush); in vm_remove_mappings()
2240 struct vm_struct *area; in __vunmap() local
2249 area = find_vm_area(addr); in __vunmap()
2250 if (unlikely(!area)) { in __vunmap()
2251 WARN(1, KERN_ERR "Trying to vfree() nonexistent vm area (%p)\n", in __vunmap()
2256 debug_check_no_locks_freed(area->addr, get_vm_area_size(area)); in __vunmap()
2257 debug_check_no_obj_freed(area->addr, get_vm_area_size(area)); in __vunmap()
2259 kasan_poison_vmalloc(area->addr, get_vm_area_size(area)); in __vunmap()
2261 vm_remove_mappings(area, deallocate_pages); in __vunmap()
2266 for (i = 0; i < area->nr_pages; i++) { in __vunmap()
2267 struct page *page = area->pages[i]; in __vunmap()
2272 atomic_long_sub(area->nr_pages, &nr_vmalloc_pages); in __vunmap()
2274 kvfree(area->pages); in __vunmap()
2277 kfree(area); in __vunmap()
2325 * Free the virtually continuous memory area starting at @addr, as obtained
2357 * Free the virtually contiguous memory area starting at @addr,
2384 * Return: the address of the area or %NULL on failure
2389 struct vm_struct *area; in vmap() local
2398 area = get_vm_area_caller(size, flags, __builtin_return_address(0)); in vmap()
2399 if (!area) in vmap()
2402 if (map_kernel_range((unsigned long)area->addr, size, pgprot_nx(prot), in vmap()
2404 vunmap(area->addr); in vmap()
2409 area->pages = pages; in vmap()
2410 area->nr_pages = count; in vmap()
2412 return area->addr; in vmap()
2445 struct vm_struct *area; in vmap_pfn() local
2447 area = get_vm_area_caller(count * PAGE_SIZE, VM_IOREMAP, in vmap_pfn()
2449 if (!area) in vmap_pfn()
2451 if (apply_to_page_range(&init_mm, (unsigned long)area->addr, in vmap_pfn()
2453 free_vm_area(area); in vmap_pfn()
2457 flush_cache_vmap((unsigned long)area->addr, in vmap_pfn()
2458 (unsigned long)area->addr + count * PAGE_SIZE); in vmap_pfn()
2460 return area->addr; in vmap_pfn()
2465 static void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask, in __vmalloc_area_node() argument
2469 unsigned int nr_pages = get_vm_area_size(area) >> PAGE_SHIFT; in __vmalloc_area_node()
2482 area->caller); in __vmalloc_area_node()
2488 remove_vm_area(area->addr); in __vmalloc_area_node()
2489 kfree(area); in __vmalloc_area_node()
2493 area->pages = pages; in __vmalloc_area_node()
2494 area->nr_pages = nr_pages; in __vmalloc_area_node()
2496 for (i = 0; i < area->nr_pages; i++) { in __vmalloc_area_node()
2506 area->nr_pages = i; in __vmalloc_area_node()
2507 atomic_long_add(area->nr_pages, &nr_vmalloc_pages); in __vmalloc_area_node()
2510 area->pages[i] = page; in __vmalloc_area_node()
2514 atomic_long_add(area->nr_pages, &nr_vmalloc_pages); in __vmalloc_area_node()
2516 if (map_kernel_range((unsigned long)area->addr, get_vm_area_size(area), in __vmalloc_area_node()
2520 return area->addr; in __vmalloc_area_node()
2525 (area->nr_pages*PAGE_SIZE), area->size); in __vmalloc_area_node()
2526 __vfree(area->addr); in __vmalloc_area_node()
2534 * @start: vm area range start
2535 * @end: vm area range end
2538 * @vm_flags: additional vm area flags (e.g. %VM_NO_GUARD)
2546 * Return: the address of the area or %NULL on failure
2553 struct vm_struct *area; in __vmalloc_node_range() local
2561 area = __get_vm_area_node(real_size, align, VM_ALLOC | VM_UNINITIALIZED | in __vmalloc_node_range()
2563 if (!area) in __vmalloc_node_range()
2566 addr = __vmalloc_area_node(area, gfp_mask, prot, node); in __vmalloc_node_range()
2575 clear_vm_uninitialized_flag(area); in __vmalloc_node_range()
2577 kmemleak_vmalloc(area, size, gfp_mask); in __vmalloc_node_range()
2671 * The resulting memory area is zeroed so it can be mapped to userspace
2755 * The resulting memory area is 32bit addressable and zeroed so it can be
2788 * To do safe access to this _mapped_ area, we need in aligned_vread()
2827 * To do safe access to this _mapped_ area, we need in aligned_vwrite()
2851 * vread() - read vmalloc area in a safe way.
2856 * This function checks that addr is a valid vmalloc'ed area, and
2857 * copy data from that area to a given buffer. If the given memory range
2859 * proper area of @buf. If there are memory holes, they'll be zero-filled.
2860 * IOREMAP area is treated as memory hole and no copy is done.
2863 * vm_struct area, returns 0. @buf should be kernel's buffer.
2866 * should know vmalloc() area is valid and can use memcpy().
2867 * This is for routines which have to access vmalloc area without
2872 * include any intersection with valid vmalloc area
2911 else /* IOREMAP area is treated as memory hole */ in vread()
2930 * vwrite() - write vmalloc area in a safe way.
2935 * This function checks that addr is a valid vmalloc'ed area, and
2938 * proper area of @buf. If there are memory holes, no copy to hole.
2939 * IOREMAP area is treated as memory hole and no copy is done.
2942 * vm_struct area, returns 0. @buf should be kernel's buffer.
2945 * should know vmalloc() area is valid and can use memcpy().
2946 * This is for routines which have to access vmalloc area without
2951 * doesn't include any intersection with valid vmalloc area
3009 * @size: size of map area
3013 * This function checks that @kaddr is a valid vmalloc'ed area,
3024 struct vm_struct *area; in remap_vmalloc_range_partial() local
3036 area = find_vm_area(kaddr); in remap_vmalloc_range_partial()
3037 if (!area) in remap_vmalloc_range_partial()
3040 if (!(area->flags & (VM_USERMAP | VM_DMA_COHERENT))) in remap_vmalloc_range_partial()
3044 end_index > get_vm_area_size(area)) in remap_vmalloc_range_partial()
3075 * This function checks that addr is a valid vmalloc'ed area, and
3090 void free_vm_area(struct vm_struct *area) in free_vm_area() argument
3093 ret = remove_vm_area(area->addr); in free_vm_area()
3094 BUG_ON(ret != area); in free_vm_area()
3095 kfree(area); in free_vm_area()
3109 * Returns: vmap_area if it is found. If there is no such area
3168 * @offsets: array containing offset of each area
3169 * @sizes: array containing size of each area
3186 * base address is pulled down to fit the area. Scanning is repeated till
3198 int area, area2, last_area, term_area; in pcpu_get_vm_areas() local
3205 for (last_area = 0, area = 0; area < nr_vms; area++) { in pcpu_get_vm_areas()
3206 start = offsets[area]; in pcpu_get_vm_areas()
3207 end = start + sizes[area]; in pcpu_get_vm_areas()
3210 BUG_ON(!IS_ALIGNED(offsets[area], align)); in pcpu_get_vm_areas()
3211 BUG_ON(!IS_ALIGNED(sizes[area], align)); in pcpu_get_vm_areas()
3213 /* detect the area with the highest address */ in pcpu_get_vm_areas()
3215 last_area = area; in pcpu_get_vm_areas()
3217 for (area2 = area + 1; area2 < nr_vms; area2++) { in pcpu_get_vm_areas()
3236 for (area = 0; area < nr_vms; area++) { in pcpu_get_vm_areas()
3237 vas[area] = kmem_cache_zalloc(vmap_area_cachep, GFP_KERNEL); in pcpu_get_vm_areas()
3238 vms[area] = kzalloc(sizeof(struct vm_struct), GFP_KERNEL); in pcpu_get_vm_areas()
3239 if (!vas[area] || !vms[area]) in pcpu_get_vm_areas()
3245 /* start scanning - we scan from the top, begin with the last area */ in pcpu_get_vm_areas()
3246 area = term_area = last_area; in pcpu_get_vm_areas()
3247 start = offsets[area]; in pcpu_get_vm_areas()
3248 end = start + sizes[area]; in pcpu_get_vm_areas()
3273 term_area = area; in pcpu_get_vm_areas()
3283 term_area = area; in pcpu_get_vm_areas()
3288 * This area fits, move on to the previous one. If in pcpu_get_vm_areas()
3291 area = (area + nr_vms - 1) % nr_vms; in pcpu_get_vm_areas()
3292 if (area == term_area) in pcpu_get_vm_areas()
3295 start = offsets[area]; in pcpu_get_vm_areas()
3296 end = start + sizes[area]; in pcpu_get_vm_areas()
3301 for (area = 0; area < nr_vms; area++) { in pcpu_get_vm_areas()
3304 start = base + offsets[area]; in pcpu_get_vm_areas()
3305 size = sizes[area]; in pcpu_get_vm_areas()
3321 /* Allocated area. */ in pcpu_get_vm_areas()
3322 va = vas[area]; in pcpu_get_vm_areas()
3330 for (area = 0; area < nr_vms; area++) { in pcpu_get_vm_areas()
3331 if (kasan_populate_vmalloc(vas[area]->va_start, sizes[area])) in pcpu_get_vm_areas()
3334 kasan_unpoison_vmalloc((void *)vas[area]->va_start, in pcpu_get_vm_areas()
3335 sizes[area]); in pcpu_get_vm_areas()
3340 for (area = 0; area < nr_vms; area++) { in pcpu_get_vm_areas()
3341 insert_vmap_area(vas[area], &vmap_area_root, &vmap_area_list); in pcpu_get_vm_areas()
3343 setup_vmalloc_vm_locked(vms[area], vas[area], VM_ALLOC, in pcpu_get_vm_areas()
3358 while (area--) { in pcpu_get_vm_areas()
3359 orig_start = vas[area]->va_start; in pcpu_get_vm_areas()
3360 orig_end = vas[area]->va_end; in pcpu_get_vm_areas()
3361 va = merge_or_add_vmap_area(vas[area], &free_vmap_area_root, in pcpu_get_vm_areas()
3366 vas[area] = NULL; in pcpu_get_vm_areas()
3376 for (area = 0; area < nr_vms; area++) { in pcpu_get_vm_areas()
3377 if (vas[area]) in pcpu_get_vm_areas()
3380 vas[area] = kmem_cache_zalloc( in pcpu_get_vm_areas()
3382 if (!vas[area]) in pcpu_get_vm_areas()
3390 for (area = 0; area < nr_vms; area++) { in pcpu_get_vm_areas()
3391 if (vas[area]) in pcpu_get_vm_areas()
3392 kmem_cache_free(vmap_area_cachep, vas[area]); in pcpu_get_vm_areas()
3394 kfree(vms[area]); in pcpu_get_vm_areas()
3408 for (area = 0; area < nr_vms; area++) { in pcpu_get_vm_areas()
3409 orig_start = vas[area]->va_start; in pcpu_get_vm_areas()
3410 orig_end = vas[area]->va_end; in pcpu_get_vm_areas()
3411 va = merge_or_add_vmap_area(vas[area], &free_vmap_area_root, in pcpu_get_vm_areas()
3416 vas[area] = NULL; in pcpu_get_vm_areas()
3417 kfree(vms[area]); in pcpu_get_vm_areas()
3515 * of vmap area is being tear down or vm_map_ram allocation. in s_show()