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bootmem: replace node_boot_start in struct bootmem_data 

Almost all users of this field need a PFN instead of a physical address,
so replace node_boot_start with node_min_pfn.

[Lee.Schermerhorn@hp.com: fix spurious BUG_ON() in mark_bootmem()]
Signed-off-by: Johannes Weiner <hannes@saeureba.de>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Johannes Weiner 2008-07-23 21:28:09 -07:00 committed by Linus Torvalds
parent 75a56cfe9f
commit 3560e249ab
10 changed files with 41 additions and 44 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/alpha/mm/numa.c
View File

@ -304,7 +304,7 @@ void __init paging_init(void)
for_each_online_node(nid) {
bootmem_data_t *bdata = &bootmem_node_data[nid];
unsigned long start_pfn = bdata->node_boot_start >> PAGE_SHIFT;
unsigned long start_pfn = bdata->node_min_pfn;
unsigned long end_pfn = bdata->node_low_pfn;
if (dma_local_pfn >= end_pfn - start_pfn)

4
arch/arm/plat-omap/fb.c
View File

@ -182,7 +182,7 @@ void __init omapfb_reserve_sdram(void)
return;
bdata = NODE_DATA(0)->bdata;
sdram_start = bdata->node_boot_start;
sdram_start = bdata->node_min_pfn << PAGE_SHIFT;
sdram_size = (bdata->node_low_pfn << PAGE_SHIFT) - sdram_start;
reserved = 0;
for (i = 0; ; i++) {
@ -340,5 +340,3 @@ unsigned long omapfb_reserve_sram(unsigned long sram_pstart,
#endif

3
arch/avr32/mm/init.c
View File

@ -119,8 +119,7 @@ void __init paging_init(void)
unsigned long zones_size[MAX_NR_ZONES];
unsigned long low, start_pfn;
start_pfn = pgdat->bdata->node_boot_start;
start_pfn >>= PAGE_SHIFT;
start_pfn = pgdat->bdata->node_min_pfn;
low = pgdat->bdata->node_low_pfn;
memset(zones_size, 0, sizeof(zones_size));

19
arch/ia64/mm/discontig.c
View File

@ -74,17 +74,17 @@ pg_data_t *pgdat_list[MAX_NUMNODES];
static int __init build_node_maps(unsigned long start, unsigned long len,
int node)
{
unsigned long cstart, epfn, end = start + len;
unsigned long spfn, epfn, end = start + len;
struct bootmem_data *bdp = &bootmem_node_data[node];
epfn = GRANULEROUNDUP(end) >> PAGE_SHIFT;
cstart = GRANULEROUNDDOWN(start);
spfn = GRANULEROUNDDOWN(start) >> PAGE_SHIFT;
if (!bdp->node_low_pfn) {
bdp->node_boot_start = cstart;
bdp->node_min_pfn = spfn;
bdp->node_low_pfn = epfn;
} else {
bdp->node_boot_start = min(cstart, bdp->node_boot_start);
bdp->node_min_pfn = min(spfn, bdp->node_min_pfn);
bdp->node_low_pfn = max(epfn, bdp->node_low_pfn);
}
@ -221,20 +221,21 @@ static void __init fill_pernode(int node, unsigned long pernode,
static int __init find_pernode_space(unsigned long start, unsigned long len,
int node)
{
unsigned long epfn;
unsigned long spfn, epfn;
unsigned long pernodesize = 0, pernode, pages, mapsize;
struct bootmem_data *bdp = &bootmem_node_data[node];
spfn = start >> PAGE_SHIFT;
epfn = (start + len) >> PAGE_SHIFT;
pages = bdp->node_low_pfn - (bdp->node_boot_start >> PAGE_SHIFT);
pages = bdp->node_low_pfn - bdp->node_min_pfn;
mapsize = bootmem_bootmap_pages(pages) << PAGE_SHIFT;
/*
* Make sure this memory falls within this node's usable memory
* since we may have thrown some away in build_maps().
*/
if (start < bdp->node_boot_start || epfn > bdp->node_low_pfn)
if (spfn < bdp->node_min_pfn || epfn > bdp->node_low_pfn)
return 0;
/* Don't setup this node's local space twice... */
@ -296,7 +297,7 @@ static void __init reserve_pernode_space(void)
bdp = pdp->bdata;
/* First the bootmem_map itself */
pages = bdp->node_low_pfn - (bdp->node_boot_start>>PAGE_SHIFT);
pages = bdp->node_low_pfn - bdp->node_min_pfn;
size = bootmem_bootmap_pages(pages) << PAGE_SHIFT;
base = __pa(bdp->node_bootmem_map);
reserve_bootmem_node(pdp, base, size, BOOTMEM_DEFAULT);
@ -466,7 +467,7 @@ void __init find_memory(void)
init_bootmem_node(pgdat_list[node],
map>>PAGE_SHIFT,
bdp->node_boot_start>>PAGE_SHIFT,
bdp->node_min_pfn,
bdp->node_low_pfn);
}

3
arch/m32r/mm/discontig.c
View File

@ -123,8 +123,7 @@ unsigned long __init setup_memory(void)
return max_low_pfn;
}
#define START_PFN(nid) \
(NODE_DATA(nid)->bdata->node_boot_start >> PAGE_SHIFT)
#define START_PFN(nid) (NODE_DATA(nid)->bdata->node_min_pfn)
#define MAX_LOW_PFN(nid) (NODE_DATA(nid)->bdata->node_low_pfn)
unsigned long __init zone_sizes_init(void)

4
arch/m32r/mm/init.c
View File

@ -93,8 +93,7 @@ void free_initrd_mem(unsigned long, unsigned long);
#endif
/* It'd be good if these lines were in the standard header file. */
#define START_PFN(nid) \
(NODE_DATA(nid)->bdata->node_boot_start >> PAGE_SHIFT)
#define START_PFN(nid) (NODE_DATA(nid)->bdata->node_min_pfn)
#define MAX_LOW_PFN(nid) (NODE_DATA(nid)->bdata->node_low_pfn)
#ifndef CONFIG_DISCONTIGMEM
@ -252,4 +251,3 @@ void free_initrd_mem(unsigned long start, unsigned long end)
printk (KERN_INFO "Freeing initrd memory: %ldk freed\n", (end - start) >> 10);
}
#endif

6
arch/mn10300/mm/init.c
View File

@ -67,8 +67,8 @@ void __init paging_init(void)
/* declare the sizes of the RAM zones (only use the normal zone) */
zones_size[ZONE_NORMAL] =
(contig_page_data.bdata->node_low_pfn) -
(contig_page_data.bdata->node_boot_start >> PAGE_SHIFT);
contig_page_data.bdata->node_low_pfn -
contig_page_data.bdata->node_min_pfn;
/* pass the memory from the bootmem allocator to the main allocator */
free_area_init(zones_size);
@ -87,7 +87,7 @@ void __init mem_init(void)
if (!mem_map)
BUG();
#define START_PFN (contig_page_data.bdata->node_boot_start >> PAGE_SHIFT)
#define START_PFN (contig_page_data.bdata->node_min_pfn)
#define MAX_LOW_PFN (contig_page_data.bdata->node_low_pfn)
max_mapnr = num_physpages = MAX_LOW_PFN - START_PFN;

2
arch/sh/mm/init.c
View File

@ -191,7 +191,7 @@ void __init paging_init(void)
pg_data_t *pgdat = NODE_DATA(nid);
unsigned long low, start_pfn;
start_pfn = pgdat->bdata->node_boot_start >> PAGE_SHIFT;
start_pfn = pgdat->bdata->node_min_pfn;
low = pgdat->bdata->node_low_pfn;
if (max_zone_pfns[ZONE_NORMAL] < low)

2
include/linux/bootmem.h
View File

@ -28,7 +28,7 @@ extern unsigned long saved_max_pfn;
* memory pages (including holes) on the node.
*/
typedef struct bootmem_data {
unsigned long node_boot_start;
unsigned long node_min_pfn;
unsigned long node_low_pfn;
void *node_bootmem_map;
unsigned long last_end_off;

40
mm/bootmem.c
View File

@ -80,7 +80,7 @@ static void __init link_bootmem(bootmem_data_t *bdata)
bootmem_data_t *ent;
ent = list_entry(iter, bootmem_data_t, list);
if (bdata->node_boot_start < ent->node_boot_start)
if (bdata->node_min_pfn < ent->node_min_pfn)
break;
}
list_add_tail(&bdata->list, iter);
@ -96,7 +96,7 @@ static unsigned long __init init_bootmem_core(bootmem_data_t *bdata,
mminit_validate_memmodel_limits(&start, &end);
bdata->node_bootmem_map = phys_to_virt(PFN_PHYS(mapstart));
bdata->node_boot_start = PFN_PHYS(start);
bdata->node_min_pfn = start;
bdata->node_low_pfn = end;
link_bootmem(bdata);
@ -151,7 +151,7 @@ static unsigned long __init free_all_bootmem_core(bootmem_data_t *bdata)
if (!bdata->node_bootmem_map)
return 0;
start = PFN_DOWN(bdata->node_boot_start);
start = bdata->node_min_pfn;
end = bdata->node_low_pfn;
/*
@ -167,7 +167,7 @@ static unsigned long __init free_all_bootmem_core(bootmem_data_t *bdata)
unsigned long *map, idx, vec;
map = bdata->node_bootmem_map;
idx = start - PFN_DOWN(bdata->node_boot_start);
idx = start - bdata->node_min_pfn;
vec = ~map[idx / BITS_PER_LONG];
if (aligned && vec == ~0UL && start + BITS_PER_LONG < end) {
@ -192,7 +192,7 @@ static unsigned long __init free_all_bootmem_core(bootmem_data_t *bdata)
}
page = virt_to_page(bdata->node_bootmem_map);
pages = bdata->node_low_pfn - PFN_DOWN(bdata->node_boot_start);
pages = bdata->node_low_pfn - bdata->node_min_pfn;
pages = bootmem_bootmap_pages(pages);
count += pages;
while (pages--)
@ -231,8 +231,8 @@ static void __init __free(bootmem_data_t *bdata,
unsigned long idx;
bdebug("nid=%td start=%lx end=%lx\n", bdata - bootmem_node_data,
sidx + PFN_DOWN(bdata->node_boot_start),
eidx + PFN_DOWN(bdata->node_boot_start));
sidx + bdata->node_min_pfn,
eidx + bdata->node_min_pfn);
if (bdata->hint_idx > sidx)
bdata->hint_idx = sidx;
@ -250,8 +250,8 @@ static int __init __reserve(bootmem_data_t *bdata, unsigned long sidx,
bdebug("nid=%td start=%lx end=%lx flags=%x\n",
bdata - bootmem_node_data,
sidx + PFN_DOWN(bdata->node_boot_start),
eidx + PFN_DOWN(bdata->node_boot_start),
sidx + bdata->node_min_pfn,
eidx + bdata->node_min_pfn,
flags);
for (idx = sidx; idx < eidx; idx++)
@ -261,7 +261,7 @@ static int __init __reserve(bootmem_data_t *bdata, unsigned long sidx,
return -EBUSY;
}
bdebug("silent double reserve of PFN %lx\n",
idx + PFN_DOWN(bdata->node_boot_start));
idx + bdata->node_min_pfn);
}
return 0;
}
@ -275,11 +275,11 @@ static int __init mark_bootmem_node(bootmem_data_t *bdata,
bdebug("nid=%td start=%lx end=%lx reserve=%d flags=%x\n",
bdata - bootmem_node_data, start, end, reserve, flags);
BUG_ON(start < PFN_DOWN(bdata->node_boot_start));
BUG_ON(start < bdata->node_min_pfn);
BUG_ON(end > bdata->node_low_pfn);
sidx = start - PFN_DOWN(bdata->node_boot_start);
eidx = end - PFN_DOWN(bdata->node_boot_start);
sidx = start - bdata->node_min_pfn;
eidx = end - bdata->node_min_pfn;
if (reserve)
return __reserve(bdata, sidx, eidx, flags);
@ -299,7 +299,8 @@ static int __init mark_bootmem(unsigned long start, unsigned long end,
int err;
unsigned long max;
if (pos < PFN_DOWN(bdata->node_boot_start)) {
if (pos < bdata->node_min_pfn ||
pos >= bdata->node_low_pfn) {
BUG_ON(pos != start);
continue;
}
@ -422,7 +423,7 @@ static void * __init alloc_bootmem_core(struct bootmem_data *bdata,
bdata - bootmem_node_data, size, PAGE_ALIGN(size) >> PAGE_SHIFT,
align, goal, limit);
min = PFN_DOWN(bdata->node_boot_start);
min = bdata->node_min_pfn;
max = bdata->node_low_pfn;
goal >>= PAGE_SHIFT;
@ -440,8 +441,8 @@ static void * __init alloc_bootmem_core(struct bootmem_data *bdata,
else
start = ALIGN(min, step);
sidx = start - PFN_DOWN(bdata->node_boot_start);
midx = max - PFN_DOWN(bdata->node_boot_start);
sidx = start - bdata->node_min_pfn;;
midx = max - bdata->node_min_pfn;
if (bdata->hint_idx > sidx) {
/*
@ -491,7 +492,8 @@ find_block:
PFN_UP(end_off), BOOTMEM_EXCLUSIVE))
BUG();
region = phys_to_virt(bdata->node_boot_start + start_off);
region = phys_to_virt(PFN_PHYS(bdata->node_min_pfn) +
start_off);
memset(region, 0, size);
return region;
}
@ -518,7 +520,7 @@ restart:
if (goal && bdata->node_low_pfn <= PFN_DOWN(goal))
continue;
if (limit && bdata->node_boot_start >= limit)
if (limit && bdata->node_min_pfn >= PFN_DOWN(limit))
break;
region = alloc_bootmem_core(bdata, size, align, goal, limit);