*/
int sysctl_lowmem_reserve_ratio[MAX_NR_ZONES-1] = {
256,
+#ifdef CONFIG_ZONE_DMA32
256,
+#endif
+#ifdef CONFIG_HIGHMEM
32
+#endif
};
EXPORT_SYMBOL(totalram_pages);
static char *zone_names[MAX_NR_ZONES] = {
"DMA",
+#ifdef CONFIG_ZONE_DMA32
"DMA32",
+#endif
"Normal",
+#ifdef CONFIG_HIGHMEM
"HighMem"
+#endif
};
int min_free_kbytes = 1024;
static void free_one_page(struct zone *zone, struct page *page, int order)
{
- LIST_HEAD(list);
- list_add(&page->lru, &list);
- free_pages_bulk(zone, 1, &list, order);
+ spin_lock(&zone->lock);
+ zone->all_unreclaimable = 0;
+ zone->pages_scanned = 0;
+ __free_one_page(page, zone ,order);
+ spin_unlock(&zone->lock);
}
static void __free_pages_ok(struct page *page, unsigned int order)
#ifdef CONFIG_NUMA
/*
* Called from the slab reaper to drain pagesets on a particular node that
- * belong to the currently executing processor.
+ * belongs to the currently executing processor.
* Note that this function must be called with the thread pinned to
* a single processor.
*/
void drain_node_pages(int nodeid)
{
- int i, z;
+ int i;
+ enum zone_type z;
unsigned long flags;
for (z = 0; z < MAX_NR_ZONES; z++) {
struct zone *zone = NODE_DATA(nodeid)->node_zones + z;
struct per_cpu_pageset *pset;
+ if (!populated_zone(zone))
+ continue;
+
pset = zone_pcp(zone, smp_processor_id());
for (i = 0; i < ARRAY_SIZE(pset->pcp); i++) {
struct per_cpu_pages *pcp;
struct zone **z = zonelist->zones;
struct page *page = NULL;
int classzone_idx = zone_idx(*z);
+ struct zone *zone;
/*
* Go through the zonelist once, looking for a zone with enough free.
* See also cpuset_zone_allowed() comment in kernel/cpuset.c.
*/
do {
+ zone = *z;
+ if (unlikely((gfp_mask & __GFP_THISNODE) &&
+ zone->zone_pgdat != zonelist->zones[0]->zone_pgdat))
+ break;
if ((alloc_flags & ALLOC_CPUSET) &&
- !cpuset_zone_allowed(*z, gfp_mask))
+ !cpuset_zone_allowed(zone, gfp_mask))
continue;
if (!(alloc_flags & ALLOC_NO_WATERMARKS)) {
unsigned long mark;
if (alloc_flags & ALLOC_WMARK_MIN)
- mark = (*z)->pages_min;
+ mark = zone->pages_min;
else if (alloc_flags & ALLOC_WMARK_LOW)
- mark = (*z)->pages_low;
+ mark = zone->pages_low;
else
- mark = (*z)->pages_high;
- if (!zone_watermark_ok(*z, order, mark,
+ mark = zone->pages_high;
+ if (!zone_watermark_ok(zone , order, mark,
classzone_idx, alloc_flags))
if (!zone_reclaim_mode ||
- !zone_reclaim(*z, gfp_mask, order))
+ !zone_reclaim(zone, gfp_mask, order))
continue;
}
- page = buffered_rmqueue(zonelist, *z, order, gfp_mask);
+ page = buffered_rmqueue(zonelist, zone, order, gfp_mask);
if (page) {
break;
}
#ifdef CONFIG_NUMA
unsigned int nr_free_pages_pgdat(pg_data_t *pgdat)
{
- unsigned int i, sum = 0;
+ unsigned int sum = 0;
+ enum zone_type i;
for (i = 0; i < MAX_NR_ZONES; i++)
sum += pgdat->node_zones[i].free_pages;
global_page_state(NR_WRITEBACK),
global_page_state(NR_UNSTABLE_NFS),
nr_free_pages(),
- global_page_state(NR_SLAB),
+ global_page_state(NR_SLAB_RECLAIMABLE) +
+ global_page_state(NR_SLAB_UNRECLAIMABLE),
global_page_state(NR_FILE_MAPPED),
global_page_state(NR_PAGETABLE));
* Add all populated zones of a node to the zonelist.
*/
static int __meminit build_zonelists_node(pg_data_t *pgdat,
- struct zonelist *zonelist, int nr_zones, int zone_type)
+ struct zonelist *zonelist, int nr_zones, enum zone_type zone_type)
{
struct zone *zone;
BUG_ON(zone_type >= MAX_NR_ZONES);
+ zone_type++;
do {
+ zone_type--;
zone = pgdat->node_zones + zone_type;
if (populated_zone(zone)) {
zonelist->zones[nr_zones++] = zone;
check_highest_zone(zone_type);
}
- zone_type--;
- } while (zone_type >= 0);
+ } while (zone_type);
return nr_zones;
}
-static inline int highest_zone(int zone_bits)
-{
- int res = ZONE_NORMAL;
- if (zone_bits & (__force int)__GFP_HIGHMEM)
- res = ZONE_HIGHMEM;
- if (zone_bits & (__force int)__GFP_DMA32)
- res = ZONE_DMA32;
- if (zone_bits & (__force int)__GFP_DMA)
- res = ZONE_DMA;
- return res;
-}
-
#ifdef CONFIG_NUMA
#define MAX_NODE_LOAD (num_online_nodes())
static int __meminitdata node_load[MAX_NUMNODES];
static void __meminit build_zonelists(pg_data_t *pgdat)
{
- int i, j, k, node, local_node;
+ int j, node, local_node;
+ enum zone_type i;
int prev_node, load;
struct zonelist *zonelist;
nodemask_t used_mask;
/* initialize zonelists */
- for (i = 0; i < GFP_ZONETYPES; i++) {
+ for (i = 0; i < MAX_NR_ZONES; i++) {
zonelist = pgdat->node_zonelists + i;
zonelist->zones[0] = NULL;
}
node_load[node] += load;
prev_node = node;
load--;
- for (i = 0; i < GFP_ZONETYPES; i++) {
+ for (i = 0; i < MAX_NR_ZONES; i++) {
zonelist = pgdat->node_zonelists + i;
for (j = 0; zonelist->zones[j] != NULL; j++);
- k = highest_zone(i);
-
- j = build_zonelists_node(NODE_DATA(node), zonelist, j, k);
+ j = build_zonelists_node(NODE_DATA(node), zonelist, j, i);
zonelist->zones[j] = NULL;
}
}
static void __meminit build_zonelists(pg_data_t *pgdat)
{
- int i, node, local_node;
- enum zone_type k;
- enum zone_type j;
+ int node, local_node;
+ enum zone_type i,j;
local_node = pgdat->node_id;
- for (i = 0; i < GFP_ZONETYPES; i++) {
+ for (i = 0; i < MAX_NR_ZONES; i++) {
struct zonelist *zonelist;
zonelist = pgdat->node_zonelists + i;
- j = 0;
- k = highest_zone(i);
- j = build_zonelists_node(pgdat, zonelist, j, k);
+ j = build_zonelists_node(pgdat, zonelist, 0, i);
/*
* Now we build the zonelist so that it contains the zones
* of all the other nodes.
for (node = local_node + 1; node < MAX_NUMNODES; node++) {
if (!node_online(node))
continue;
- j = build_zonelists_node(NODE_DATA(node), zonelist, j, k);
+ j = build_zonelists_node(NODE_DATA(node), zonelist, j, i);
}
for (node = 0; node < local_node; node++) {
if (!node_online(node))
continue;
- j = build_zonelists_node(NODE_DATA(node), zonelist, j, k);
+ j = build_zonelists_node(NODE_DATA(node), zonelist, j, i);
}
zonelist->zones[j] = NULL;
unsigned long *zones_size, unsigned long *zholes_size)
{
unsigned long realtotalpages, totalpages = 0;
- int i;
+ enum zone_type i;
for (i = 0; i < MAX_NR_ZONES; i++)
totalpages += zones_size[i];
zone->spanned_pages = size;
zone->present_pages = realsize;
#ifdef CONFIG_NUMA
- zone->min_unmapped_ratio = (realsize*sysctl_min_unmapped_ratio)
+ zone->min_unmapped_pages = (realsize*sysctl_min_unmapped_ratio)
/ 100;
+ zone->min_slab_pages = (realsize * sysctl_min_slab_ratio) / 100;
#endif
zone->name = zone_names[j];
spin_lock_init(&zone->lock);
{
struct pglist_data *pgdat;
unsigned long reserve_pages = 0;
- int i, j;
+ enum zone_type i, j;
for_each_online_pgdat(pgdat) {
for (i = 0; i < MAX_NR_ZONES; i++) {
static void setup_per_zone_lowmem_reserve(void)
{
struct pglist_data *pgdat;
- int j, idx;
+ enum zone_type j, idx;
for_each_online_pgdat(pgdat) {
for (j = 0; j < MAX_NR_ZONES; j++) {
zone->lowmem_reserve[j] = 0;
- for (idx = j-1; idx >= 0; idx--) {
+ idx = j;
+ while (idx) {
struct zone *lower_zone;
+ idx--;
+
if (sysctl_lowmem_reserve_ratio[idx] < 1)
sysctl_lowmem_reserve_ratio[idx] = 1;
return rc;
for_each_zone(zone)
- zone->min_unmapped_ratio = (zone->present_pages *
+ zone->min_unmapped_pages = (zone->present_pages *
sysctl_min_unmapped_ratio) / 100;
return 0;
}
+
+int sysctl_min_slab_ratio_sysctl_handler(ctl_table *table, int write,
+ struct file *file, void __user *buffer, size_t *length, loff_t *ppos)
+{
+ struct zone *zone;
+ int rc;
+
+ rc = proc_dointvec_minmax(table, write, file, buffer, length, ppos);
+ if (rc)
+ return rc;
+
+ for_each_zone(zone)
+ zone->min_slab_pages = (zone->present_pages *
+ sysctl_min_slab_ratio) / 100;
+ return 0;
+}
#endif
/*
git.openpandora.org / pandora-kernel.git / blobdiff