diff options
Diffstat (limited to 'kernel/power/snapshot.c')
-rw-r--r-- | kernel/power/snapshot.c | 317 |
1 files changed, 101 insertions, 216 deletions
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c index 542163a01..3a9706043 100644 --- a/kernel/power/snapshot.c +++ b/kernel/power/snapshot.c @@ -36,9 +36,6 @@ #include <asm/tlbflush.h> #include <asm/io.h> -#include "tuxonice_modules.h" -#include "tuxonice_builtin.h" -#include "tuxonice_alloc.h" #include "power.h" static int swsusp_page_is_free(struct page *); @@ -101,9 +98,6 @@ static void *get_image_page(gfp_t gfp_mask, int safe_needed) { void *res; - if (toi_running) - return (void *) toi_get_nonconflicting_page(); - res = (void *)get_zeroed_page(gfp_mask); if (safe_needed) while (res && swsusp_page_is_free(virt_to_page(res))) { @@ -149,11 +143,6 @@ static inline void free_image_page(void *addr, int clear_nosave_free) page = virt_to_page(addr); - if (toi_running) { - toi__free_page(29, page); - return; - } - swsusp_unset_page_forbidden(page); if (clear_nosave_free) swsusp_unset_page_free(page); @@ -313,15 +302,13 @@ struct bm_position { int node_bit; }; -#define BM_POSITION_SLOTS (NR_CPUS * 2) - struct memory_bitmap { struct list_head zones; struct linked_page *p_list; /* list of pages used to store zone * bitmap objects and bitmap block * objects */ - struct bm_position cur[BM_POSITION_SLOTS]; /* most recently used bit position */ + struct bm_position cur; /* most recently used bit position */ }; /* Functions that operate on memory bitmaps */ @@ -486,39 +473,16 @@ static void free_zone_bm_rtree(struct mem_zone_bm_rtree *zone, free_image_page(node->data, clear_nosave_free); } -void memory_bm_position_reset(struct memory_bitmap *bm) +static void memory_bm_position_reset(struct memory_bitmap *bm) { - int index; - - for (index = 0; index < BM_POSITION_SLOTS; index++) { - bm->cur[index].zone = list_entry(bm->zones.next, struct mem_zone_bm_rtree, + bm->cur.zone = list_entry(bm->zones.next, struct mem_zone_bm_rtree, list); - bm->cur[index].node = list_entry(bm->cur[index].zone->leaves.next, + bm->cur.node = list_entry(bm->cur.zone->leaves.next, struct rtree_node, list); - bm->cur[index].node_pfn = 0; - bm->cur[index].node_bit = 0; - } + bm->cur.node_pfn = 0; + bm->cur.node_bit = 0; } -static void memory_bm_clear_current(struct memory_bitmap *bm, int index); -unsigned long memory_bm_next_pfn(struct memory_bitmap *bm, int index); - -/** - * memory_bm_clear - * @param bm - The bitmap to clear - * - * Only run while single threaded - locking not needed - */ -void memory_bm_clear(struct memory_bitmap *bm) -{ - memory_bm_position_reset(bm); - - while (memory_bm_next_pfn(bm, 0) != BM_END_OF_MAP) { - memory_bm_clear_current(bm, 0); - } - - memory_bm_position_reset(bm); -} static void memory_bm_free(struct memory_bitmap *bm, int clear_nosave_free); struct mem_extent { @@ -631,8 +595,7 @@ memory_bm_create(struct memory_bitmap *bm, gfp_t gfp_mask, int safe_needed) } bm->p_list = ca.chain; - - memory_bm_position_reset(bm); + memory_bm_position_reset(bm); Exit: free_mem_extents(&mem_extents); return error; @@ -668,24 +631,14 @@ static void memory_bm_free(struct memory_bitmap *bm, int clear_nosave_free) * It walks the radix tree to find the page which contains the bit for * pfn and returns the bit position in **addr and *bit_nr. */ -int memory_bm_find_bit(struct memory_bitmap *bm, int index, - unsigned long pfn, void **addr, unsigned int *bit_nr) +static int memory_bm_find_bit(struct memory_bitmap *bm, unsigned long pfn, + void **addr, unsigned int *bit_nr) { struct mem_zone_bm_rtree *curr, *zone; struct rtree_node *node; int i, block_nr; - if (!bm->cur[index].zone) { - // Reset - bm->cur[index].zone = list_entry(bm->zones.next, struct mem_zone_bm_rtree, - list); - bm->cur[index].node = list_entry(bm->cur[index].zone->leaves.next, - struct rtree_node, list); - bm->cur[index].node_pfn = 0; - bm->cur[index].node_bit = 0; - } - - zone = bm->cur[index].zone; + zone = bm->cur.zone; if (pfn >= zone->start_pfn && pfn < zone->end_pfn) goto zone_found; @@ -709,8 +662,8 @@ zone_found: * node for our pfn. */ - node = bm->cur[index].node; - if (((pfn - zone->start_pfn) & ~BM_BLOCK_MASK) == bm->cur[index].node_pfn) + node = bm->cur.node; + if (((pfn - zone->start_pfn) & ~BM_BLOCK_MASK) == bm->cur.node_pfn) goto node_found; node = zone->rtree; @@ -727,9 +680,9 @@ zone_found: node_found: /* Update last position */ - bm->cur[index].zone = zone; - bm->cur[index].node = node; - bm->cur[index].node_pfn = (pfn - zone->start_pfn) & ~BM_BLOCK_MASK; + bm->cur.zone = zone; + bm->cur.node = node; + bm->cur.node_pfn = (pfn - zone->start_pfn) & ~BM_BLOCK_MASK; /* Set return values */ *addr = node->data; @@ -738,66 +691,66 @@ node_found: return 0; } -void memory_bm_set_bit(struct memory_bitmap *bm, int index, unsigned long pfn) +static void memory_bm_set_bit(struct memory_bitmap *bm, unsigned long pfn) { void *addr; unsigned int bit; int error; - error = memory_bm_find_bit(bm, index, pfn, &addr, &bit); + error = memory_bm_find_bit(bm, pfn, &addr, &bit); BUG_ON(error); set_bit(bit, addr); } -int mem_bm_set_bit_check(struct memory_bitmap *bm, int index, unsigned long pfn) +static int mem_bm_set_bit_check(struct memory_bitmap *bm, unsigned long pfn) { void *addr; unsigned int bit; int error; - error = memory_bm_find_bit(bm, index, pfn, &addr, &bit); + error = memory_bm_find_bit(bm, pfn, &addr, &bit); if (!error) set_bit(bit, addr); return error; } -void memory_bm_clear_bit(struct memory_bitmap *bm, int index, unsigned long pfn) +static void memory_bm_clear_bit(struct memory_bitmap *bm, unsigned long pfn) { void *addr; unsigned int bit; int error; - error = memory_bm_find_bit(bm, index, pfn, &addr, &bit); + error = memory_bm_find_bit(bm, pfn, &addr, &bit); BUG_ON(error); clear_bit(bit, addr); } -static void memory_bm_clear_current(struct memory_bitmap *bm, int index) +static void memory_bm_clear_current(struct memory_bitmap *bm) { int bit; - bit = max(bm->cur[index].node_bit - 1, 0); - clear_bit(bit, bm->cur[index].node->data); + bit = max(bm->cur.node_bit - 1, 0); + clear_bit(bit, bm->cur.node->data); } -int memory_bm_test_bit(struct memory_bitmap *bm, int index, unsigned long pfn) +static int memory_bm_test_bit(struct memory_bitmap *bm, unsigned long pfn) { void *addr; unsigned int bit; int error; - error = memory_bm_find_bit(bm, index, pfn, &addr, &bit); + error = memory_bm_find_bit(bm, pfn, &addr, &bit); BUG_ON(error); return test_bit(bit, addr); } -static bool memory_bm_pfn_present(struct memory_bitmap *bm, int index, unsigned long pfn) +static bool memory_bm_pfn_present(struct memory_bitmap *bm, unsigned long pfn) { void *addr; unsigned int bit; - return !memory_bm_find_bit(bm, index, pfn, &addr, &bit); + return !memory_bm_find_bit(bm, pfn, &addr, &bit); } /* @@ -810,25 +763,25 @@ static bool memory_bm_pfn_present(struct memory_bitmap *bm, int index, unsigned * * Returns true if there is a next node, false otherwise. */ -static bool rtree_next_node(struct memory_bitmap *bm, int index) +static bool rtree_next_node(struct memory_bitmap *bm) { - bm->cur[index].node = list_entry(bm->cur[index].node->list.next, + bm->cur.node = list_entry(bm->cur.node->list.next, struct rtree_node, list); - if (&bm->cur[index].node->list != &bm->cur[index].zone->leaves) { - bm->cur[index].node_pfn += BM_BITS_PER_BLOCK; - bm->cur[index].node_bit = 0; + if (&bm->cur.node->list != &bm->cur.zone->leaves) { + bm->cur.node_pfn += BM_BITS_PER_BLOCK; + bm->cur.node_bit = 0; touch_softlockup_watchdog(); return true; } /* No more nodes, goto next zone */ - bm->cur[index].zone = list_entry(bm->cur[index].zone->list.next, + bm->cur.zone = list_entry(bm->cur.zone->list.next, struct mem_zone_bm_rtree, list); - if (&bm->cur[index].zone->list != &bm->zones) { - bm->cur[index].node = list_entry(bm->cur[index].zone->leaves.next, + if (&bm->cur.zone->list != &bm->zones) { + bm->cur.node = list_entry(bm->cur.zone->leaves.next, struct rtree_node, list); - bm->cur[index].node_pfn = 0; - bm->cur[index].node_bit = 0; + bm->cur.node_pfn = 0; + bm->cur.node_bit = 0; return true; } @@ -846,29 +799,38 @@ static bool rtree_next_node(struct memory_bitmap *bm, int index) * It is required to run memory_bm_position_reset() before the * first call to this function. */ -unsigned long memory_bm_next_pfn(struct memory_bitmap *bm, int index) +static unsigned long memory_bm_next_pfn(struct memory_bitmap *bm) { unsigned long bits, pfn, pages; int bit; - index += NR_CPUS; /* Iteration state is separated from get/set/test */ - do { - pages = bm->cur[index].zone->end_pfn - bm->cur[index].zone->start_pfn; - bits = min(pages - bm->cur[index].node_pfn, BM_BITS_PER_BLOCK); - bit = find_next_bit(bm->cur[index].node->data, bits, - bm->cur[index].node_bit); + pages = bm->cur.zone->end_pfn - bm->cur.zone->start_pfn; + bits = min(pages - bm->cur.node_pfn, BM_BITS_PER_BLOCK); + bit = find_next_bit(bm->cur.node->data, bits, + bm->cur.node_bit); if (bit < bits) { - pfn = bm->cur[index].zone->start_pfn + bm->cur[index].node_pfn + bit; - bm->cur[index].node_bit = bit + 1; + pfn = bm->cur.zone->start_pfn + bm->cur.node_pfn + bit; + bm->cur.node_bit = bit + 1; return pfn; } - } while (rtree_next_node(bm, index)); + } while (rtree_next_node(bm)); return BM_END_OF_MAP; } -LIST_HEAD(nosave_regions); +/** + * This structure represents a range of page frames the contents of which + * should not be saved during the suspend. + */ + +struct nosave_region { + struct list_head list; + unsigned long start_pfn; + unsigned long end_pfn; +}; + +static LIST_HEAD(nosave_regions); /** * register_nosave_region - register a range of page frames the contents @@ -927,37 +889,37 @@ static struct memory_bitmap *free_pages_map; void swsusp_set_page_free(struct page *page) { if (free_pages_map) - memory_bm_set_bit(free_pages_map, 0, page_to_pfn(page)); + memory_bm_set_bit(free_pages_map, page_to_pfn(page)); } static int swsusp_page_is_free(struct page *page) { return free_pages_map ? - memory_bm_test_bit(free_pages_map, 0, page_to_pfn(page)) : 0; + memory_bm_test_bit(free_pages_map, page_to_pfn(page)) : 0; } void swsusp_unset_page_free(struct page *page) { if (free_pages_map) - memory_bm_clear_bit(free_pages_map, 0, page_to_pfn(page)); + memory_bm_clear_bit(free_pages_map, page_to_pfn(page)); } static void swsusp_set_page_forbidden(struct page *page) { if (forbidden_pages_map) - memory_bm_set_bit(forbidden_pages_map, 0, page_to_pfn(page)); + memory_bm_set_bit(forbidden_pages_map, page_to_pfn(page)); } int swsusp_page_is_forbidden(struct page *page) { return forbidden_pages_map ? - memory_bm_test_bit(forbidden_pages_map, 0, page_to_pfn(page)) : 0; + memory_bm_test_bit(forbidden_pages_map, page_to_pfn(page)) : 0; } static void swsusp_unset_page_forbidden(struct page *page) { if (forbidden_pages_map) - memory_bm_clear_bit(forbidden_pages_map, 0, page_to_pfn(page)); + memory_bm_clear_bit(forbidden_pages_map, page_to_pfn(page)); } /** @@ -988,7 +950,7 @@ static void mark_nosave_pages(struct memory_bitmap *bm) * touch the PFNs for which the error is * returned anyway. */ - mem_bm_set_bit_check(bm, 0, pfn); + mem_bm_set_bit_check(bm, pfn); } } } @@ -1116,7 +1078,7 @@ static unsigned int count_free_highmem_pages(void) * We should save the page if it isn't Nosave or NosaveFree, or Reserved, * and it isn't a part of a free chunk of pages. */ -struct page *saveable_highmem_page(struct zone *zone, unsigned long pfn) +static struct page *saveable_highmem_page(struct zone *zone, unsigned long pfn) { struct page *page; @@ -1163,6 +1125,11 @@ static unsigned int count_highmem_pages(void) } return n; } +#else +static inline void *saveable_highmem_page(struct zone *z, unsigned long p) +{ + return NULL; +} #endif /* CONFIG_HIGHMEM */ /** @@ -1173,7 +1140,7 @@ static unsigned int count_highmem_pages(void) * of pages statically defined as 'unsaveable', and it isn't a part of * a free chunk of pages. */ -struct page *saveable_page(struct zone *zone, unsigned long pfn) +static struct page *saveable_page(struct zone *zone, unsigned long pfn) { struct page *page; @@ -1311,15 +1278,15 @@ copy_data_pages(struct memory_bitmap *copy_bm, struct memory_bitmap *orig_bm) max_zone_pfn = zone_end_pfn(zone); for (pfn = zone->zone_start_pfn; pfn < max_zone_pfn; pfn++) if (page_is_saveable(zone, pfn)) - memory_bm_set_bit(orig_bm, 0, pfn); + memory_bm_set_bit(orig_bm, pfn); } memory_bm_position_reset(orig_bm); memory_bm_position_reset(copy_bm); for(;;) { - pfn = memory_bm_next_pfn(orig_bm, 0); + pfn = memory_bm_next_pfn(orig_bm); if (unlikely(pfn == BM_END_OF_MAP)) break; - copy_data_page(memory_bm_next_pfn(copy_bm, 0), pfn); + copy_data_page(memory_bm_next_pfn(copy_bm), pfn); } } @@ -1365,8 +1332,8 @@ void swsusp_free(void) memory_bm_position_reset(free_pages_map); loop: - fr_pfn = memory_bm_next_pfn(free_pages_map, 0); - fb_pfn = memory_bm_next_pfn(forbidden_pages_map, 0); + fr_pfn = memory_bm_next_pfn(free_pages_map); + fb_pfn = memory_bm_next_pfn(forbidden_pages_map); /* * Find the next bit set in both bitmaps. This is guaranteed to @@ -1374,16 +1341,16 @@ loop: */ do { if (fb_pfn < fr_pfn) - fb_pfn = memory_bm_next_pfn(forbidden_pages_map, 0); + fb_pfn = memory_bm_next_pfn(forbidden_pages_map); if (fr_pfn < fb_pfn) - fr_pfn = memory_bm_next_pfn(free_pages_map, 0); + fr_pfn = memory_bm_next_pfn(free_pages_map); } while (fb_pfn != fr_pfn); if (fr_pfn != BM_END_OF_MAP && pfn_valid(fr_pfn)) { struct page *page = pfn_to_page(fr_pfn); - memory_bm_clear_current(forbidden_pages_map, 0); - memory_bm_clear_current(free_pages_map, 0); + memory_bm_clear_current(forbidden_pages_map); + memory_bm_clear_current(free_pages_map); __free_page(page); goto loop; } @@ -1418,7 +1385,7 @@ static unsigned long preallocate_image_pages(unsigned long nr_pages, gfp_t mask) page = alloc_image_page(mask); if (!page) break; - memory_bm_set_bit(©_bm, 0, page_to_pfn(page)); + memory_bm_set_bit(©_bm, page_to_pfn(page)); if (PageHighMem(page)) alloc_highmem++; else @@ -1514,7 +1481,7 @@ static unsigned long free_unnecessary_pages(void) memory_bm_position_reset(©_bm); while (to_free_normal > 0 || to_free_highmem > 0) { - unsigned long pfn = memory_bm_next_pfn(©_bm, 0); + unsigned long pfn = memory_bm_next_pfn(©_bm); struct page *page = pfn_to_page(pfn); if (PageHighMem(page)) { @@ -1528,7 +1495,7 @@ static unsigned long free_unnecessary_pages(void) to_free_normal--; alloc_normal--; } - memory_bm_clear_bit(©_bm, 0, pfn); + memory_bm_clear_bit(©_bm, pfn); swsusp_unset_page_forbidden(page); swsusp_unset_page_free(page); __free_page(page); @@ -1813,7 +1780,7 @@ alloc_highmem_pages(struct memory_bitmap *bm, unsigned int nr_highmem) struct page *page; page = alloc_image_page(__GFP_HIGHMEM|__GFP_KSWAPD_RECLAIM); - memory_bm_set_bit(bm, 0, page_to_pfn(page)); + memory_bm_set_bit(bm, page_to_pfn(page)); } return nr_highmem; } @@ -1856,7 +1823,7 @@ swsusp_alloc(struct memory_bitmap *orig_bm, struct memory_bitmap *copy_bm, page = alloc_image_page(GFP_ATOMIC | __GFP_COLD); if (!page) goto err_out; - memory_bm_set_bit(copy_bm, 0, page_to_pfn(page)); + memory_bm_set_bit(copy_bm, page_to_pfn(page)); } } @@ -1871,9 +1838,6 @@ asmlinkage __visible int swsusp_save(void) { unsigned int nr_pages, nr_highmem; - if (toi_running) - return toi_post_context_save(); - printk(KERN_INFO "PM: Creating hibernation image:\n"); drain_local_pages(NULL); @@ -1921,7 +1885,7 @@ static int init_header_complete(struct swsusp_info *info) return 0; } -char *check_image_kernel(struct swsusp_info *info) +static char *check_image_kernel(struct swsusp_info *info) { if (info->version_code != LINUX_VERSION_CODE) return "kernel version"; @@ -1942,7 +1906,7 @@ unsigned long snapshot_get_image_size(void) return nr_copy_pages + nr_meta_pages + 1; } -int init_header(struct swsusp_info *info) +static int init_header(struct swsusp_info *info) { memset(info, 0, sizeof(struct swsusp_info)); info->num_physpages = get_num_physpages(); @@ -1964,7 +1928,7 @@ pack_pfns(unsigned long *buf, struct memory_bitmap *bm) int j; for (j = 0; j < PAGE_SIZE / sizeof(long); j++) { - buf[j] = memory_bm_next_pfn(bm, 0); + buf[j] = memory_bm_next_pfn(bm); if (unlikely(buf[j] == BM_END_OF_MAP)) break; /* Save page key for data page (s390 only). */ @@ -2015,7 +1979,7 @@ int snapshot_read_next(struct snapshot_handle *handle) } else { struct page *page; - page = pfn_to_page(memory_bm_next_pfn(©_bm, 0)); + page = pfn_to_page(memory_bm_next_pfn(©_bm)); if (PageHighMem(page)) { /* Highmem pages are copied to the buffer, * because we can't return with a kmapped @@ -2057,7 +2021,7 @@ static int mark_unsafe_pages(struct memory_bitmap *bm) /* Mark pages that correspond to the "original" pfns as "unsafe" */ memory_bm_position_reset(bm); do { - pfn = memory_bm_next_pfn(bm, 0); + pfn = memory_bm_next_pfn(bm); if (likely(pfn != BM_END_OF_MAP)) { if (likely(pfn_valid(pfn))) swsusp_set_page_free(pfn_to_page(pfn)); @@ -2077,10 +2041,10 @@ duplicate_memory_bitmap(struct memory_bitmap *dst, struct memory_bitmap *src) unsigned long pfn; memory_bm_position_reset(src); - pfn = memory_bm_next_pfn(src, 0); + pfn = memory_bm_next_pfn(src); while (pfn != BM_END_OF_MAP) { - memory_bm_set_bit(dst, 0, pfn); - pfn = memory_bm_next_pfn(src, 0); + memory_bm_set_bit(dst, pfn); + pfn = memory_bm_next_pfn(src); } } @@ -2131,8 +2095,8 @@ static int unpack_orig_pfns(unsigned long *buf, struct memory_bitmap *bm) /* Extract and buffer page key for data page (s390 only). */ page_key_memorize(buf + j); - if (memory_bm_pfn_present(bm, 0, buf[j])) - memory_bm_set_bit(bm, 0, buf[j]); + if (memory_bm_pfn_present(bm, buf[j])) + memory_bm_set_bit(bm, buf[j]); else return -EFAULT; } @@ -2175,12 +2139,12 @@ static unsigned int count_highmem_image_pages(struct memory_bitmap *bm) unsigned int cnt = 0; memory_bm_position_reset(bm); - pfn = memory_bm_next_pfn(bm, 0); + pfn = memory_bm_next_pfn(bm); while (pfn != BM_END_OF_MAP) { if (PageHighMem(pfn_to_page(pfn))) cnt++; - pfn = memory_bm_next_pfn(bm, 0); + pfn = memory_bm_next_pfn(bm); } return cnt; } @@ -2225,7 +2189,7 @@ prepare_highmem_image(struct memory_bitmap *bm, unsigned int *nr_highmem_p) page = alloc_page(__GFP_HIGHMEM); if (!swsusp_page_is_free(page)) { /* The page is "safe", set its bit the bitmap */ - memory_bm_set_bit(bm, 0, page_to_pfn(page)); + memory_bm_set_bit(bm, page_to_pfn(page)); safe_highmem_pages++; } /* Mark the page as allocated */ @@ -2283,7 +2247,7 @@ get_highmem_page_buffer(struct page *page, struct chain_allocator *ca) /* Copy of the page will be stored in high memory */ kaddr = buffer; - tmp = pfn_to_page(memory_bm_next_pfn(safe_highmem_bm, 0)); + tmp = pfn_to_page(memory_bm_next_pfn(safe_highmem_bm)); safe_highmem_pages--; last_highmem_page = tmp; pbe->copy_page = tmp; @@ -2454,7 +2418,7 @@ static void *get_buffer(struct memory_bitmap *bm, struct chain_allocator *ca) { struct pbe *pbe; struct page *page; - unsigned long pfn = memory_bm_next_pfn(bm, 0); + unsigned long pfn = memory_bm_next_pfn(bm); if (pfn == BM_END_OF_MAP) return ERR_PTR(-EFAULT); @@ -2641,82 +2605,3 @@ int restore_highmem(void) return 0; } #endif /* CONFIG_HIGHMEM */ - -struct memory_bitmap *pageset1_map, *pageset2_map, *free_map, *nosave_map, - *pageset1_copy_map, *io_map, *page_resave_map, *compare_map; - -int resume_attempted; - -int memory_bm_write(struct memory_bitmap *bm, int (*rw_chunk) - (int rw, struct toi_module_ops *owner, char *buffer, int buffer_size)) -{ - int result; - - memory_bm_position_reset(bm); - - do { - result = rw_chunk(WRITE, NULL, (char *) bm->cur[0].node->data, PAGE_SIZE); - - if (result) - return result; - } while (rtree_next_node(bm, 0)); - return 0; -} - -int memory_bm_read(struct memory_bitmap *bm, int (*rw_chunk) - (int rw, struct toi_module_ops *owner, char *buffer, int buffer_size)) -{ - int result; - - memory_bm_position_reset(bm); - - do { - result = rw_chunk(READ, NULL, (char *) bm->cur[0].node->data, PAGE_SIZE); - - if (result) - return result; - - } while (rtree_next_node(bm, 0)); - return 0; -} - -int memory_bm_space_needed(struct memory_bitmap *bm) -{ - unsigned long bytes = 0; - - memory_bm_position_reset(bm); - do { - bytes += PAGE_SIZE; - } while (rtree_next_node(bm, 0)); - return bytes; -} - -int toi_alloc_bitmap(struct memory_bitmap **bm) -{ - int error; - struct memory_bitmap *bm1; - - bm1 = kzalloc(sizeof(struct memory_bitmap), GFP_KERNEL); - if (!bm1) - return -ENOMEM; - - error = memory_bm_create(bm1, GFP_KERNEL, PG_ANY); - if (error) { - printk("Error returned - %d.\n", error); - kfree(bm1); - return -ENOMEM; - } - - *bm = bm1; - return 0; -} - -void toi_free_bitmap(struct memory_bitmap **bm) -{ - if (!*bm) - return; - - memory_bm_free(*bm, 0); - kfree(*bm); - *bm = NULL; -} |