diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/bootmem.c | 81 |
1 files changed, 44 insertions, 37 deletions
diff --git a/mm/bootmem.c b/mm/bootmem.c index 23c3317c09ed..f0f85fa713ca 100644 --- a/mm/bootmem.c +++ b/mm/bootmem.c @@ -38,7 +38,7 @@ unsigned long saved_max_pfn; #endif /* return the number of _pages_ that will be allocated for the boot bitmap */ -unsigned long __init bootmem_bootmap_pages (unsigned long pages) +unsigned long __init bootmem_bootmap_pages(unsigned long pages) { unsigned long mapsize; @@ -48,12 +48,14 @@ unsigned long __init bootmem_bootmap_pages (unsigned long pages) return mapsize; } + /* * link bdata in order */ static void __init link_bootmem(bootmem_data_t *bdata) { bootmem_data_t *ent; + if (list_empty(&bdata_list)) { list_add(&bdata->list, &bdata_list); return; @@ -66,7 +68,6 @@ static void __init link_bootmem(bootmem_data_t *bdata) } } list_add_tail(&bdata->list, &bdata_list); - return; } /* @@ -85,7 +86,7 @@ static unsigned long __init get_mapsize(bootmem_data_t *bdata) /* * Called once to set up the allocator itself. */ -static unsigned long __init init_bootmem_core (pg_data_t *pgdat, +static unsigned long __init init_bootmem_core(pg_data_t *pgdat, unsigned long mapstart, unsigned long start, unsigned long end) { bootmem_data_t *bdata = pgdat->bdata; @@ -185,7 +186,7 @@ __alloc_bootmem_core(struct bootmem_data *bdata, unsigned long size, unsigned long i, start = 0, incr, eidx, end_pfn; void *ret; - if(!size) { + if (!size) { printk("__alloc_bootmem_core(): zero-sized request\n"); BUG(); } @@ -234,7 +235,7 @@ restart_scan: for (j = i + 1; j < i + areasize; ++j) { if (j >= eidx) goto fail_block; - if (test_bit (j, bdata->node_bootmem_map)) + if (test_bit(j, bdata->node_bootmem_map)) goto fail_block; } start = i; @@ -262,19 +263,21 @@ found: bdata->last_offset && bdata->last_pos+1 == start) { offset = ALIGN(bdata->last_offset, align); BUG_ON(offset > PAGE_SIZE); - remaining_size = PAGE_SIZE-offset; + remaining_size = PAGE_SIZE - offset; if (size < remaining_size) { areasize = 0; /* last_pos unchanged */ - bdata->last_offset = offset+size; - ret = phys_to_virt(bdata->last_pos*PAGE_SIZE + offset + - bdata->node_boot_start); + bdata->last_offset = offset + size; + ret = phys_to_virt(bdata->last_pos * PAGE_SIZE + + offset + + bdata->node_boot_start); } else { remaining_size = size - remaining_size; - areasize = (remaining_size+PAGE_SIZE-1)/PAGE_SIZE; - ret = phys_to_virt(bdata->last_pos*PAGE_SIZE + offset + - bdata->node_boot_start); - bdata->last_pos = start+areasize-1; + areasize = (remaining_size + PAGE_SIZE-1) / PAGE_SIZE; + ret = phys_to_virt(bdata->last_pos * PAGE_SIZE + + offset + + bdata->node_boot_start); + bdata->last_pos = start + areasize - 1; bdata->last_offset = remaining_size; } bdata->last_offset &= ~PAGE_MASK; @@ -287,7 +290,7 @@ found: /* * Reserve the area now: */ - for (i = start; i < start+areasize; i++) + for (i = start; i < start + areasize; i++) if (unlikely(test_and_set_bit(i, bdata->node_bootmem_map))) BUG(); memset(ret, 0, size); @@ -338,7 +341,7 @@ static unsigned long __init free_all_bootmem_core(pg_data_t *pgdat) } } } else { - i+=BITS_PER_LONG; + i += BITS_PER_LONG; } pfn += BITS_PER_LONG; } @@ -361,51 +364,51 @@ static unsigned long __init free_all_bootmem_core(pg_data_t *pgdat) return total; } -unsigned long __init init_bootmem_node (pg_data_t *pgdat, unsigned long freepfn, +unsigned long __init init_bootmem_node(pg_data_t *pgdat, unsigned long freepfn, unsigned long startpfn, unsigned long endpfn) { - return(init_bootmem_core(pgdat, freepfn, startpfn, endpfn)); + return init_bootmem_core(pgdat, freepfn, startpfn, endpfn); } -void __init reserve_bootmem_node (pg_data_t *pgdat, unsigned long physaddr, - unsigned long size) +void __init reserve_bootmem_node(pg_data_t *pgdat, unsigned long physaddr, + unsigned long size) { reserve_bootmem_core(pgdat->bdata, physaddr, size); } -void __init free_bootmem_node (pg_data_t *pgdat, unsigned long physaddr, - unsigned long size) +void __init free_bootmem_node(pg_data_t *pgdat, unsigned long physaddr, + unsigned long size) { free_bootmem_core(pgdat->bdata, physaddr, size); } -unsigned long __init free_all_bootmem_node (pg_data_t *pgdat) +unsigned long __init free_all_bootmem_node(pg_data_t *pgdat) { - return(free_all_bootmem_core(pgdat)); + return free_all_bootmem_core(pgdat); } -unsigned long __init init_bootmem (unsigned long start, unsigned long pages) +unsigned long __init init_bootmem(unsigned long start, unsigned long pages) { max_low_pfn = pages; min_low_pfn = start; - return(init_bootmem_core(NODE_DATA(0), start, 0, pages)); + return init_bootmem_core(NODE_DATA(0), start, 0, pages); } #ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE -void __init reserve_bootmem (unsigned long addr, unsigned long size) +void __init reserve_bootmem(unsigned long addr, unsigned long size) { reserve_bootmem_core(NODE_DATA(0)->bdata, addr, size); } #endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */ -void __init free_bootmem (unsigned long addr, unsigned long size) +void __init free_bootmem(unsigned long addr, unsigned long size) { free_bootmem_core(NODE_DATA(0)->bdata, addr, size); } -unsigned long __init free_all_bootmem (void) +unsigned long __init free_all_bootmem(void) { - return(free_all_bootmem_core(NODE_DATA(0))); + return free_all_bootmem_core(NODE_DATA(0)); } void * __init __alloc_bootmem_nopanic(unsigned long size, unsigned long align, @@ -414,9 +417,11 @@ void * __init __alloc_bootmem_nopanic(unsigned long size, unsigned long align, bootmem_data_t *bdata; void *ptr; - list_for_each_entry(bdata, &bdata_list, list) - if ((ptr = __alloc_bootmem_core(bdata, size, align, goal, 0))) - return(ptr); + list_for_each_entry(bdata, &bdata_list, list) { + ptr = __alloc_bootmem_core(bdata, size, align, goal, 0); + if (ptr) + return ptr; + } return NULL; } @@ -424,6 +429,7 @@ void * __init __alloc_bootmem(unsigned long size, unsigned long align, unsigned long goal) { void *mem = __alloc_bootmem_nopanic(size,align,goal); + if (mem) return mem; /* @@ -442,7 +448,7 @@ void * __init __alloc_bootmem_node(pg_data_t *pgdat, unsigned long size, ptr = __alloc_bootmem_core(pgdat->bdata, size, align, goal, 0); if (ptr) - return (ptr); + return ptr; return __alloc_bootmem(size, align, goal); } @@ -455,10 +461,11 @@ void * __init __alloc_bootmem_low(unsigned long size, unsigned long align, bootmem_data_t *bdata; void *ptr; - list_for_each_entry(bdata, &bdata_list, list) - if ((ptr = __alloc_bootmem_core(bdata, size, - align, goal, LOW32LIMIT))) - return(ptr); + list_for_each_entry(bdata, &bdata_list, list) { + ptr = __alloc_bootmem_core(bdata, size, align, goal, LOW32LIMIT); + if (ptr) + return ptr; + } /* * Whoops, we cannot satisfy the allocation request. |