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Diffstat (limited to 'mm/memcontrol.c')
-rw-r--r--mm/memcontrol.c115
1 files changed, 43 insertions, 72 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 36896f3eb7f..c0cbd7790c5 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -32,6 +32,7 @@
#include <linux/fs.h>
#include <linux/seq_file.h>
#include <linux/vmalloc.h>
+#include <linux/mm_inline.h>
#include <asm/uaccess.h>
@@ -85,22 +86,13 @@ static s64 mem_cgroup_read_stat(struct mem_cgroup_stat *stat,
/*
* per-zone information in memory controller.
*/
-
-enum mem_cgroup_zstat_index {
- MEM_CGROUP_ZSTAT_ACTIVE,
- MEM_CGROUP_ZSTAT_INACTIVE,
-
- NR_MEM_CGROUP_ZSTAT,
-};
-
struct mem_cgroup_per_zone {
/*
* spin_lock to protect the per cgroup LRU
*/
spinlock_t lru_lock;
- struct list_head active_list;
- struct list_head inactive_list;
- unsigned long count[NR_MEM_CGROUP_ZSTAT];
+ struct list_head lists[NR_LRU_LISTS];
+ unsigned long count[NR_LRU_LISTS];
};
/* Macro for accessing counter */
#define MEM_CGROUP_ZSTAT(mz, idx) ((mz)->count[(idx)])
@@ -227,7 +219,7 @@ page_cgroup_zoneinfo(struct page_cgroup *pc)
}
static unsigned long mem_cgroup_get_all_zonestat(struct mem_cgroup *mem,
- enum mem_cgroup_zstat_index idx)
+ enum lru_list idx)
{
int nid, zid;
struct mem_cgroup_per_zone *mz;
@@ -297,11 +289,9 @@ static void __mem_cgroup_remove_list(struct mem_cgroup_per_zone *mz,
struct page_cgroup *pc)
{
int from = pc->flags & PAGE_CGROUP_FLAG_ACTIVE;
+ int lru = !!from;
- if (from)
- MEM_CGROUP_ZSTAT(mz, MEM_CGROUP_ZSTAT_ACTIVE) -= 1;
- else
- MEM_CGROUP_ZSTAT(mz, MEM_CGROUP_ZSTAT_INACTIVE) -= 1;
+ MEM_CGROUP_ZSTAT(mz, lru) -= 1;
mem_cgroup_charge_statistics(pc->mem_cgroup, pc->flags, false);
list_del(&pc->lru);
@@ -310,37 +300,35 @@ static void __mem_cgroup_remove_list(struct mem_cgroup_per_zone *mz,
static void __mem_cgroup_add_list(struct mem_cgroup_per_zone *mz,
struct page_cgroup *pc)
{
- int to = pc->flags & PAGE_CGROUP_FLAG_ACTIVE;
+ int lru = LRU_INACTIVE;
+
+ if (pc->flags & PAGE_CGROUP_FLAG_ACTIVE)
+ lru += LRU_ACTIVE;
+
+ MEM_CGROUP_ZSTAT(mz, lru) += 1;
+ list_add(&pc->lru, &mz->lists[lru]);
- if (!to) {
- MEM_CGROUP_ZSTAT(mz, MEM_CGROUP_ZSTAT_INACTIVE) += 1;
- list_add(&pc->lru, &mz->inactive_list);
- } else {
- MEM_CGROUP_ZSTAT(mz, MEM_CGROUP_ZSTAT_ACTIVE) += 1;
- list_add(&pc->lru, &mz->active_list);
- }
mem_cgroup_charge_statistics(pc->mem_cgroup, pc->flags, true);
}
static void __mem_cgroup_move_lists(struct page_cgroup *pc, bool active)
{
- int from = pc->flags & PAGE_CGROUP_FLAG_ACTIVE;
struct mem_cgroup_per_zone *mz = page_cgroup_zoneinfo(pc);
+ int lru = LRU_INACTIVE;
- if (from)
- MEM_CGROUP_ZSTAT(mz, MEM_CGROUP_ZSTAT_ACTIVE) -= 1;
- else
- MEM_CGROUP_ZSTAT(mz, MEM_CGROUP_ZSTAT_INACTIVE) -= 1;
+ if (pc->flags & PAGE_CGROUP_FLAG_ACTIVE)
+ lru += LRU_ACTIVE;
- if (active) {
- MEM_CGROUP_ZSTAT(mz, MEM_CGROUP_ZSTAT_ACTIVE) += 1;
+ MEM_CGROUP_ZSTAT(mz, lru) -= 1;
+
+ if (active)
pc->flags |= PAGE_CGROUP_FLAG_ACTIVE;
- list_move(&pc->lru, &mz->active_list);
- } else {
- MEM_CGROUP_ZSTAT(mz, MEM_CGROUP_ZSTAT_INACTIVE) += 1;
+ else
pc->flags &= ~PAGE_CGROUP_FLAG_ACTIVE;
- list_move(&pc->lru, &mz->inactive_list);
- }
+
+ lru = !!active;
+ MEM_CGROUP_ZSTAT(mz, lru) += 1;
+ list_move(&pc->lru, &mz->lists[lru]);
}
int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *mem)
@@ -412,8 +400,8 @@ long mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem)
{
unsigned long active, inactive;
/* active and inactive are the number of pages. 'long' is ok.*/
- active = mem_cgroup_get_all_zonestat(mem, MEM_CGROUP_ZSTAT_ACTIVE);
- inactive = mem_cgroup_get_all_zonestat(mem, MEM_CGROUP_ZSTAT_INACTIVE);
+ active = mem_cgroup_get_all_zonestat(mem, LRU_ACTIVE);
+ inactive = mem_cgroup_get_all_zonestat(mem, LRU_INACTIVE);
return (long) (active / (inactive + 1));
}
@@ -444,28 +432,17 @@ void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem, int priority)
* (see include/linux/mmzone.h)
*/
-long mem_cgroup_calc_reclaim_active(struct mem_cgroup *mem,
- struct zone *zone, int priority)
+long mem_cgroup_calc_reclaim(struct mem_cgroup *mem, struct zone *zone,
+ int priority, enum lru_list lru)
{
- long nr_active;
+ long nr_pages;
int nid = zone->zone_pgdat->node_id;
int zid = zone_idx(zone);
struct mem_cgroup_per_zone *mz = mem_cgroup_zoneinfo(mem, nid, zid);
- nr_active = MEM_CGROUP_ZSTAT(mz, MEM_CGROUP_ZSTAT_ACTIVE);
- return (nr_active >> priority);
-}
-
-long mem_cgroup_calc_reclaim_inactive(struct mem_cgroup *mem,
- struct zone *zone, int priority)
-{
- long nr_inactive;
- int nid = zone->zone_pgdat->node_id;
- int zid = zone_idx(zone);
- struct mem_cgroup_per_zone *mz = mem_cgroup_zoneinfo(mem, nid, zid);
+ nr_pages = MEM_CGROUP_ZSTAT(mz, lru);
- nr_inactive = MEM_CGROUP_ZSTAT(mz, MEM_CGROUP_ZSTAT_INACTIVE);
- return (nr_inactive >> priority);
+ return (nr_pages >> priority);
}
unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan,
@@ -484,14 +461,11 @@ unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan,
int nid = z->zone_pgdat->node_id;
int zid = zone_idx(z);
struct mem_cgroup_per_zone *mz;
+ int lru = !!active;
BUG_ON(!mem_cont);
mz = mem_cgroup_zoneinfo(mem_cont, nid, zid);
- if (active)
- src = &mz->active_list;
- else
- src = &mz->inactive_list;
-
+ src = &mz->lists[lru];
spin_lock(&mz->lru_lock);
scan = 0;
@@ -863,7 +837,7 @@ int mem_cgroup_resize_limit(struct mem_cgroup *memcg, unsigned long long val)
#define FORCE_UNCHARGE_BATCH (128)
static void mem_cgroup_force_empty_list(struct mem_cgroup *mem,
struct mem_cgroup_per_zone *mz,
- int active)
+ enum lru_list lru)
{
struct page_cgroup *pc;
struct page *page;
@@ -871,10 +845,7 @@ static void mem_cgroup_force_empty_list(struct mem_cgroup *mem,
unsigned long flags;
struct list_head *list;
- if (active)
- list = &mz->active_list;
- else
- list = &mz->inactive_list;
+ list = &mz->lists[lru];
spin_lock_irqsave(&mz->lru_lock, flags);
while (!list_empty(list)) {
@@ -922,11 +893,10 @@ static int mem_cgroup_force_empty(struct mem_cgroup *mem)
for_each_node_state(node, N_POSSIBLE)
for (zid = 0; zid < MAX_NR_ZONES; zid++) {
struct mem_cgroup_per_zone *mz;
+ enum lru_list l;
mz = mem_cgroup_zoneinfo(mem, node, zid);
- /* drop all page_cgroup in active_list */
- mem_cgroup_force_empty_list(mem, mz, 1);
- /* drop all page_cgroup in inactive_list */
- mem_cgroup_force_empty_list(mem, mz, 0);
+ for_each_lru(l)
+ mem_cgroup_force_empty_list(mem, mz, l);
}
}
ret = 0;
@@ -1015,9 +985,9 @@ static int mem_control_stat_show(struct cgroup *cont, struct cftype *cft,
unsigned long active, inactive;
inactive = mem_cgroup_get_all_zonestat(mem_cont,
- MEM_CGROUP_ZSTAT_INACTIVE);
+ LRU_INACTIVE);
active = mem_cgroup_get_all_zonestat(mem_cont,
- MEM_CGROUP_ZSTAT_ACTIVE);
+ LRU_ACTIVE);
cb->fill(cb, "active", (active) * PAGE_SIZE);
cb->fill(cb, "inactive", (inactive) * PAGE_SIZE);
}
@@ -1062,6 +1032,7 @@ static int alloc_mem_cgroup_per_zone_info(struct mem_cgroup *mem, int node)
{
struct mem_cgroup_per_node *pn;
struct mem_cgroup_per_zone *mz;
+ enum lru_list l;
int zone, tmp = node;
/*
* This routine is called against possible nodes.
@@ -1082,9 +1053,9 @@ static int alloc_mem_cgroup_per_zone_info(struct mem_cgroup *mem, int node)
for (zone = 0; zone < MAX_NR_ZONES; zone++) {
mz = &pn->zoneinfo[zone];
- INIT_LIST_HEAD(&mz->active_list);
- INIT_LIST_HEAD(&mz->inactive_list);
spin_lock_init(&mz->lru_lock);
+ for_each_lru(l)
+ INIT_LIST_HEAD(&mz->lists[l]);
}
return 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-18 23:00:09 +0000