summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--include/linux/bootmem.h95
-rw-r--r--mm/bootmem.c81
2 files changed, 93 insertions, 83 deletions
diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h
index b2067e4a4486..31e9abb6d977 100644
--- a/include/linux/bootmem.h
+++ b/include/linux/bootmem.h
@@ -38,29 +38,30 @@ typedef struct bootmem_data {
struct list_head list;
} bootmem_data_t;
-extern unsigned long bootmem_bootmap_pages (unsigned long);
-extern unsigned long init_bootmem (unsigned long addr, unsigned long memend);
-extern void free_bootmem (unsigned long addr, unsigned long size);
-extern void * __alloc_bootmem (unsigned long size,
- unsigned long align,
- unsigned long goal);
-extern void * __alloc_bootmem_nopanic (unsigned long size,
- unsigned long align,
- unsigned long goal);
-extern void * __alloc_bootmem_low(unsigned long size,
+extern unsigned long bootmem_bootmap_pages(unsigned long);
+extern unsigned long init_bootmem(unsigned long addr, unsigned long memend);
+extern void free_bootmem(unsigned long addr, unsigned long size);
+extern void *__alloc_bootmem(unsigned long size,
+ unsigned long align,
+ unsigned long goal);
+extern void *__alloc_bootmem_nopanic(unsigned long size,
+ unsigned long align,
+ unsigned long goal);
+extern void *__alloc_bootmem_low(unsigned long size,
+ unsigned long align,
+ unsigned long goal);
+extern void *__alloc_bootmem_low_node(pg_data_t *pgdat,
+ unsigned long size,
+ unsigned long align,
+ unsigned long goal);
+extern void *__alloc_bootmem_core(struct bootmem_data *bdata,
+ unsigned long size,
unsigned long align,
- unsigned long goal);
-extern void * __alloc_bootmem_low_node(pg_data_t *pgdat,
- unsigned long size,
- unsigned long align,
- unsigned long goal);
-extern void * __alloc_bootmem_core(struct bootmem_data *bdata,
- unsigned long size,
- unsigned long align,
- unsigned long goal,
- unsigned long limit);
+ unsigned long goal,
+ unsigned long limit);
+
#ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE
-extern void reserve_bootmem (unsigned long addr, unsigned long size);
+extern void reserve_bootmem(unsigned long addr, unsigned long size);
#define alloc_bootmem(x) \
__alloc_bootmem(x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
#define alloc_bootmem_low(x) \
@@ -70,22 +71,24 @@ extern void reserve_bootmem (unsigned long addr, unsigned long size);
#define alloc_bootmem_low_pages(x) \
__alloc_bootmem_low(x, PAGE_SIZE, 0)
#endif /* !CONFIG_HAVE_ARCH_BOOTMEM_NODE */
-extern unsigned long free_all_bootmem (void);
-extern void * __alloc_bootmem_node (pg_data_t *pgdat,
- unsigned long size,
- unsigned long align,
- unsigned long goal);
-extern unsigned long init_bootmem_node (pg_data_t *pgdat,
- unsigned long freepfn,
- unsigned long startpfn,
- unsigned long endpfn);
-extern void reserve_bootmem_node (pg_data_t *pgdat,
- unsigned long physaddr,
- unsigned long size);
-extern void free_bootmem_node (pg_data_t *pgdat,
- unsigned long addr,
- unsigned long size);
-extern unsigned long free_all_bootmem_node (pg_data_t *pgdat);
+
+extern unsigned long free_all_bootmem(void);
+extern unsigned long free_all_bootmem_node(pg_data_t *pgdat);
+extern void *__alloc_bootmem_node(pg_data_t *pgdat,
+ unsigned long size,
+ unsigned long align,
+ unsigned long goal);
+extern unsigned long init_bootmem_node(pg_data_t *pgdat,
+ unsigned long freepfn,
+ unsigned long startpfn,
+ unsigned long endpfn);
+extern void reserve_bootmem_node(pg_data_t *pgdat,
+ unsigned long physaddr,
+ unsigned long size);
+extern void free_bootmem_node(pg_data_t *pgdat,
+ unsigned long addr,
+ unsigned long size);
+
#ifndef CONFIG_HAVE_ARCH_BOOTMEM_NODE
#define alloc_bootmem_node(pgdat, x) \
__alloc_bootmem_node(pgdat, x, SMP_CACHE_BYTES, __pa(MAX_DMA_ADDRESS))
@@ -102,19 +105,19 @@ static inline void *alloc_remap(int nid, unsigned long size)
{
return NULL;
}
-#endif
+#endif /* CONFIG_HAVE_ARCH_ALLOC_REMAP */
extern unsigned long __meminitdata nr_kernel_pages;
extern unsigned long nr_all_pages;
-extern void * alloc_large_system_hash(const char *tablename,
- unsigned long bucketsize,
- unsigned long numentries,
- int scale,
- int flags,
- unsigned int *_hash_shift,
- unsigned int *_hash_mask,
- unsigned long limit);
+extern void *alloc_large_system_hash(const char *tablename,
+ unsigned long bucketsize,
+ unsigned long numentries,
+ int scale,
+ int flags,
+ unsigned int *_hash_shift,
+ unsigned int *_hash_mask,
+ unsigned long limit);
#define HASH_HIGHMEM 0x00000001 /* Consider highmem? */
#define HASH_EARLY 0x00000002 /* Allocating during early boot? */
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.
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-26 06:10:32 +0000