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Diffstat (limited to 'mm')
-rw-r--r--mm/hugetlb.c8
-rw-r--r--mm/oom_kill.c8
-rw-r--r--mm/page_alloc.c170
-rw-r--r--mm/slab.c8
-rw-r--r--mm/slub.c8
-rw-r--r--mm/vmscan.c21
6 files changed, 101 insertions, 122 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 51c9e2c0164..ddd141cad77 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -97,11 +97,11 @@ static struct page *dequeue_huge_page_vma(struct vm_area_struct *vma,
struct mempolicy *mpol;
struct zonelist *zonelist = huge_zonelist(vma, address,
htlb_alloc_mask, &mpol);
- struct zone **z;
+ struct zone *zone, **z;
- for (z = zonelist->zones; *z; z++) {
- nid = zone_to_nid(*z);
- if (cpuset_zone_allowed_softwall(*z, htlb_alloc_mask) &&
+ for_each_zone_zonelist(zone, z, zonelist, MAX_NR_ZONES - 1) {
+ nid = zone_to_nid(zone);
+ if (cpuset_zone_allowed_softwall(zone, htlb_alloc_mask) &&
!list_empty(&hugepage_freelists[nid])) {
page = list_entry(hugepage_freelists[nid].next,
struct page, lru);
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index beb592fe938..2c93502cfcb 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -175,12 +175,14 @@ static inline enum oom_constraint constrained_alloc(struct zonelist *zonelist,
gfp_t gfp_mask)
{
#ifdef CONFIG_NUMA
+ struct zone *zone;
struct zone **z;
+ enum zone_type high_zoneidx = gfp_zone(gfp_mask);
nodemask_t nodes = node_states[N_HIGH_MEMORY];
- for (z = zonelist->zones; *z; z++)
- if (cpuset_zone_allowed_softwall(*z, gfp_mask))
- node_clear(zone_to_nid(*z), nodes);
+ for_each_zone_zonelist(zone, z, zonelist, high_zoneidx)
+ if (cpuset_zone_allowed_softwall(zone, gfp_mask))
+ node_clear(zone_to_nid(zone), nodes);
else
return CONSTRAINT_CPUSET;
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 187efd47a44..4ccb8651cf2 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1378,42 +1378,29 @@ static void zlc_mark_zone_full(struct zonelist *zonelist, struct zone **z)
*/
static struct page *
get_page_from_freelist(gfp_t gfp_mask, unsigned int order,
- struct zonelist *zonelist, int alloc_flags)
+ struct zonelist *zonelist, int high_zoneidx, int alloc_flags)
{
struct zone **z;
struct page *page = NULL;
- int classzone_idx = zone_idx(zonelist->zones[0]);
+ int classzone_idx;
struct zone *zone, *preferred_zone;
nodemask_t *allowednodes = NULL;/* zonelist_cache approximation */
int zlc_active = 0; /* set if using zonelist_cache */
int did_zlc_setup = 0; /* just call zlc_setup() one time */
- enum zone_type highest_zoneidx = -1; /* Gets set for policy zonelists */
+
+ z = first_zones_zonelist(zonelist, high_zoneidx);
+ classzone_idx = zone_idx(*z);
+ preferred_zone = *z;
zonelist_scan:
/*
* Scan zonelist, looking for a zone with enough free.
* See also cpuset_zone_allowed() comment in kernel/cpuset.c.
*/
- z = zonelist->zones;
- preferred_zone = *z;
-
- do {
- /*
- * In NUMA, this could be a policy zonelist which contains
- * zones that may not be allowed by the current gfp_mask.
- * Check the zone is allowed by the current flags
- */
- if (unlikely(alloc_should_filter_zonelist(zonelist))) {
- if (highest_zoneidx == -1)
- highest_zoneidx = gfp_zone(gfp_mask);
- if (zone_idx(*z) > highest_zoneidx)
- continue;
- }
-
+ for_each_zone_zonelist(zone, z, zonelist, high_zoneidx) {
if (NUMA_BUILD && zlc_active &&
!zlc_zone_worth_trying(zonelist, z, allowednodes))
continue;
- zone = *z;
if ((alloc_flags & ALLOC_CPUSET) &&
!cpuset_zone_allowed_softwall(zone, gfp_mask))
goto try_next_zone;
@@ -1447,7 +1434,7 @@ try_next_zone:
zlc_active = 1;
did_zlc_setup = 1;
}
- } while (*(++z) != NULL);
+ }
if (unlikely(NUMA_BUILD && page == NULL && zlc_active)) {
/* Disable zlc cache for second zonelist scan */
@@ -1465,6 +1452,7 @@ __alloc_pages(gfp_t gfp_mask, unsigned int order,
struct zonelist *zonelist)
{
const gfp_t wait = gfp_mask & __GFP_WAIT;
+ enum zone_type high_zoneidx = gfp_zone(gfp_mask);
struct zone **z;
struct page *page;
struct reclaim_state reclaim_state;
@@ -1490,7 +1478,7 @@ restart:
}
page = get_page_from_freelist(gfp_mask|__GFP_HARDWALL, order,
- zonelist, ALLOC_WMARK_LOW|ALLOC_CPUSET);
+ zonelist, high_zoneidx, ALLOC_WMARK_LOW|ALLOC_CPUSET);
if (page)
goto got_pg;
@@ -1534,7 +1522,8 @@ restart:
* Ignore cpuset if GFP_ATOMIC (!wait) rather than fail alloc.
* See also cpuset_zone_allowed() comment in kernel/cpuset.c.
*/
- page = get_page_from_freelist(gfp_mask, order, zonelist, alloc_flags);
+ page = get_page_from_freelist(gfp_mask, order, zonelist,
+ high_zoneidx, alloc_flags);
if (page)
goto got_pg;
@@ -1547,7 +1536,7 @@ rebalance:
nofail_alloc:
/* go through the zonelist yet again, ignoring mins */
page = get_page_from_freelist(gfp_mask, order,
- zonelist, ALLOC_NO_WATERMARKS);
+ zonelist, high_zoneidx, ALLOC_NO_WATERMARKS);
if (page)
goto got_pg;
if (gfp_mask & __GFP_NOFAIL) {
@@ -1582,7 +1571,7 @@ nofail_alloc:
if (likely(did_some_progress)) {
page = get_page_from_freelist(gfp_mask, order,
- zonelist, alloc_flags);
+ zonelist, high_zoneidx, alloc_flags);
if (page)
goto got_pg;
} else if ((gfp_mask & __GFP_FS) && !(gfp_mask & __GFP_NORETRY)) {
@@ -1598,7 +1587,7 @@ nofail_alloc:
* under heavy pressure.
*/
page = get_page_from_freelist(gfp_mask|__GFP_HARDWALL, order,
- zonelist, ALLOC_WMARK_HIGH|ALLOC_CPUSET);
+ zonelist, high_zoneidx, ALLOC_WMARK_HIGH|ALLOC_CPUSET);
if (page) {
clear_zonelist_oom(zonelist);
goto got_pg;
@@ -1713,14 +1702,15 @@ EXPORT_SYMBOL(free_pages);
static unsigned int nr_free_zone_pages(int offset)
{
+ struct zone **z;
+ struct zone *zone;
+
/* Just pick one node, since fallback list is circular */
unsigned int sum = 0;
struct zonelist *zonelist = node_zonelist(numa_node_id(), GFP_KERNEL);
- struct zone **zonep = zonelist->zones;
- struct zone *zone;
- for (zone = *zonep++; zone; zone = *zonep++) {
+ for_each_zone_zonelist(zone, z, zonelist, offset) {
unsigned long size = zone->present_pages;
unsigned long high = zone->pages_high;
if (size > high)
@@ -2078,17 +2068,15 @@ static int find_next_best_node(int node, nodemask_t *used_node_mask)
*/
static void build_zonelists_in_node_order(pg_data_t *pgdat, int node)
{
- enum zone_type i;
int j;
struct zonelist *zonelist;
- for (i = 0; i < MAX_NR_ZONES; i++) {
- zonelist = pgdat->node_zonelists + i;
- for (j = 0; zonelist->zones[j] != NULL; j++)
- ;
- j = build_zonelists_node(NODE_DATA(node), zonelist, j, i);
- zonelist->zones[j] = NULL;
- }
+ zonelist = &pgdat->node_zonelists[0];
+ for (j = 0; zonelist->zones[j] != NULL; j++)
+ ;
+ j = build_zonelists_node(NODE_DATA(node), zonelist, j,
+ MAX_NR_ZONES - 1);
+ zonelist->zones[j] = NULL;
}
/*
@@ -2096,15 +2084,12 @@ static void build_zonelists_in_node_order(pg_data_t *pgdat, int node)
*/
static void build_thisnode_zonelists(pg_data_t *pgdat)
{
- enum zone_type i;
int j;
struct zonelist *zonelist;
- for (i = 0; i < MAX_NR_ZONES; i++) {
- zonelist = pgdat->node_zonelists + MAX_NR_ZONES + i;
- j = build_zonelists_node(pgdat, zonelist, 0, i);
- zonelist->zones[j] = NULL;
- }
+ zonelist = &pgdat->node_zonelists[1];
+ j = build_zonelists_node(pgdat, zonelist, 0, MAX_NR_ZONES - 1);
+ zonelist->zones[j] = NULL;
}
/*
@@ -2117,27 +2102,24 @@ static int node_order[MAX_NUMNODES];
static void build_zonelists_in_zone_order(pg_data_t *pgdat, int nr_nodes)
{
- enum zone_type i;
int pos, j, node;
int zone_type; /* needs to be signed */
struct zone *z;
struct zonelist *zonelist;
- for (i = 0; i < MAX_NR_ZONES; i++) {
- zonelist = pgdat->node_zonelists + i;
- pos = 0;
- for (zone_type = i; zone_type >= 0; zone_type--) {
- for (j = 0; j < nr_nodes; j++) {
- node = node_order[j];
- z = &NODE_DATA(node)->node_zones[zone_type];
- if (populated_zone(z)) {
- zonelist->zones[pos++] = z;
- check_highest_zone(zone_type);
- }
+ zonelist = &pgdat->node_zonelists[0];
+ pos = 0;
+ for (zone_type = MAX_NR_ZONES - 1; zone_type >= 0; zone_type--) {
+ for (j = 0; j < nr_nodes; j++) {
+ node = node_order[j];
+ z = &NODE_DATA(node)->node_zones[zone_type];
+ if (populated_zone(z)) {
+ zonelist->zones[pos++] = z;
+ check_highest_zone(zone_type);
}
}
- zonelist->zones[pos] = NULL;
}
+ zonelist->zones[pos] = NULL;
}
static int default_zonelist_order(void)
@@ -2264,19 +2246,15 @@ static void build_zonelists(pg_data_t *pgdat)
/* Construct the zonelist performance cache - see further mmzone.h */
static void build_zonelist_cache(pg_data_t *pgdat)
{
- int i;
-
- for (i = 0; i < MAX_NR_ZONES; i++) {
- struct zonelist *zonelist;
- struct zonelist_cache *zlc;
- struct zone **z;
+ struct zonelist *zonelist;
+ struct zonelist_cache *zlc;
+ struct zone **z;
- zonelist = pgdat->node_zonelists + i;
- zonelist->zlcache_ptr = zlc = &zonelist->zlcache;
- bitmap_zero(zlc->fullzones, MAX_ZONES_PER_ZONELIST);
- for (z = zonelist->zones; *z; z++)
- zlc->z_to_n[z - zonelist->zones] = zone_to_nid(*z);
- }
+ zonelist = &pgdat->node_zonelists[0];
+ zonelist->zlcache_ptr = zlc = &zonelist->zlcache;
+ bitmap_zero(zlc->fullzones, MAX_ZONES_PER_ZONELIST);
+ for (z = zonelist->zones; *z; z++)
+ zlc->z_to_n[z - zonelist->zones] = zone_to_nid(*z);
}
@@ -2290,45 +2268,43 @@ static void set_zonelist_order(void)
static void build_zonelists(pg_data_t *pgdat)
{
int node, local_node;
- enum zone_type i,j;
+ enum zone_type j;
+ struct zonelist *zonelist;
local_node = pgdat->node_id;
- for (i = 0; i < MAX_NR_ZONES; i++) {
- struct zonelist *zonelist;
- zonelist = pgdat->node_zonelists + i;
+ zonelist = &pgdat->node_zonelists[0];
+ j = build_zonelists_node(pgdat, zonelist, 0, MAX_NR_ZONES - 1);
- j = build_zonelists_node(pgdat, zonelist, 0, i);
- /*
- * Now we build the zonelist so that it contains the zones
- * of all the other nodes.
- * We don't want to pressure a particular node, so when
- * building the zones for node N, we make sure that the
- * zones coming right after the local ones are those from
- * node N+1 (modulo N)
- */
- for (node = local_node + 1; node < MAX_NUMNODES; node++) {
- if (!node_online(node))
- continue;
- 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, i);
- }
-
- zonelist->zones[j] = NULL;
+ /*
+ * Now we build the zonelist so that it contains the zones
+ * of all the other nodes.
+ * We don't want to pressure a particular node, so when
+ * building the zones for node N, we make sure that the
+ * zones coming right after the local ones are those from
+ * node N+1 (modulo N)
+ */
+ for (node = local_node + 1; node < MAX_NUMNODES; node++) {
+ if (!node_online(node))
+ continue;
+ j = build_zonelists_node(NODE_DATA(node), zonelist, j,
+ MAX_NR_ZONES - 1);
}
+ for (node = 0; node < local_node; node++) {
+ if (!node_online(node))
+ continue;
+ j = build_zonelists_node(NODE_DATA(node), zonelist, j,
+ MAX_NR_ZONES - 1);
+ }
+
+ zonelist->zones[j] = NULL;
}
/* non-NUMA variant of zonelist performance cache - just NULL zlcache_ptr */
static void build_zonelist_cache(pg_data_t *pgdat)
{
- int i;
-
- for (i = 0; i < MAX_NR_ZONES; i++)
- pgdat->node_zonelists[i].zlcache_ptr = NULL;
+ pgdat->node_zonelists[0].zlcache_ptr = NULL;
+ pgdat->node_zonelists[1].zlcache_ptr = NULL;
}
#endif /* CONFIG_NUMA */
diff --git a/mm/slab.c b/mm/slab.c
index 5488c54b117..29851841da6 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -3243,6 +3243,8 @@ static void *fallback_alloc(struct kmem_cache *cache, gfp_t flags)
struct zonelist *zonelist;
gfp_t local_flags;
struct zone **z;
+ struct zone *zone;
+ enum zone_type high_zoneidx = gfp_zone(flags);
void *obj = NULL;
int nid;
@@ -3257,10 +3259,10 @@ retry:
* Look through allowed nodes for objects available
* from existing per node queues.
*/
- for (z = zonelist->zones; *z && !obj; z++) {
- nid = zone_to_nid(*z);
+ for_each_zone_zonelist(zone, z, zonelist, high_zoneidx) {
+ nid = zone_to_nid(zone);
- if (cpuset_zone_allowed_hardwall(*z, flags) &&
+ if (cpuset_zone_allowed_hardwall(zone, flags) &&
cache->nodelists[nid] &&
cache->nodelists[nid]->free_objects)
obj = ____cache_alloc_node(cache,
diff --git a/mm/slub.c b/mm/slub.c
index 19ebbfb2068..80d20cc1c0f 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1285,6 +1285,8 @@ static struct page *get_any_partial(struct kmem_cache *s, gfp_t flags)
#ifdef CONFIG_NUMA
struct zonelist *zonelist;
struct zone **z;
+ struct zone *zone;
+ enum zone_type high_zoneidx = gfp_zone(flags);
struct page *page;
/*
@@ -1310,12 +1312,12 @@ static struct page *get_any_partial(struct kmem_cache *s, gfp_t flags)
return NULL;
zonelist = node_zonelist(slab_node(current->mempolicy), flags);
- for (z = zonelist->zones; *z; z++) {
+ for_each_zone_zonelist(zone, z, zonelist, high_zoneidx) {
struct kmem_cache_node *n;
- n = get_node(s, zone_to_nid(*z));
+ n = get_node(s, zone_to_nid(zone));
- if (n && cpuset_zone_allowed_hardwall(*z, flags) &&
+ if (n && cpuset_zone_allowed_hardwall(zone, flags) &&
n->nr_partial > MIN_PARTIAL) {
page = get_partial_node(n);
if (page)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index ef8551e0d2d..0515b8f4489 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1249,15 +1249,13 @@ static unsigned long shrink_zone(int priority, struct zone *zone,
static unsigned long shrink_zones(int priority, struct zonelist *zonelist,
struct scan_control *sc)
{
+ enum zone_type high_zoneidx = gfp_zone(sc->gfp_mask);
unsigned long nr_reclaimed = 0;
- struct zone **zones = zonelist->zones;
- int i;
-
+ struct zone **z;
+ struct zone *zone;
sc->all_unreclaimable = 1;
- for (i = 0; zones[i] != NULL; i++) {
- struct zone *zone = zones[i];
-
+ for_each_zone_zonelist(zone, z, zonelist, high_zoneidx) {
if (!populated_zone(zone))
continue;
/*
@@ -1311,8 +1309,9 @@ static unsigned long do_try_to_free_pages(struct zonelist *zonelist,
unsigned long nr_reclaimed = 0;
struct reclaim_state *reclaim_state = current->reclaim_state;
unsigned long lru_pages = 0;
- struct zone **zones = zonelist->zones;
- int i;
+ struct zone **z;
+ struct zone *zone;
+ enum zone_type high_zoneidx = gfp_zone(gfp_mask);
if (scan_global_lru(sc))
count_vm_event(ALLOCSTALL);
@@ -1320,8 +1319,7 @@ static unsigned long do_try_to_free_pages(struct zonelist *zonelist,
* mem_cgroup will not do shrink_slab.
*/
if (scan_global_lru(sc)) {
- for (i = 0; zones[i] != NULL; i++) {
- struct zone *zone = zones[i];
+ for_each_zone_zonelist(zone, z, zonelist, high_zoneidx) {
if (!cpuset_zone_allowed_hardwall(zone, GFP_KERNEL))
continue;
@@ -1385,8 +1383,7 @@ out:
priority = 0;
if (scan_global_lru(sc)) {
- for (i = 0; zones[i] != NULL; i++) {
- struct zone *zone = zones[i];
+ for_each_zone_zonelist(zone, z, zonelist, high_zoneidx) {
if (!cpuset_zone_allowed_hardwall(zone, GFP_KERNEL))
continue;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 07:44:14 +0000