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-rw-r--r--mm/memcontrol.c150
1 files changed, 73 insertions, 77 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 6a921890739f..59c14c988143 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2899,29 +2899,34 @@ static int mem_cgroup_hierarchy_write(struct cgroup_subsys_state *css,
return retval;
}
-static void tree_stat(struct mem_cgroup *memcg, unsigned long *stat)
-{
- struct mem_cgroup *iter;
- int i;
-
- memset(stat, 0, sizeof(*stat) * MEMCG_NR_STAT);
-
- for_each_mem_cgroup_tree(iter, memcg) {
- for (i = 0; i < MEMCG_NR_STAT; i++)
- stat[i] += memcg_page_state(iter, i);
- }
-}
+struct accumulated_stats {
+ unsigned long stat[MEMCG_NR_STAT];
+ unsigned long events[NR_VM_EVENT_ITEMS];
+ unsigned long lru_pages[NR_LRU_LISTS];
+ const unsigned int *stats_array;
+ const unsigned int *events_array;
+ int stats_size;
+ int events_size;
+};
-static void tree_events(struct mem_cgroup *memcg, unsigned long *events)
+static void accumulate_memcg_tree(struct mem_cgroup *memcg,
+ struct accumulated_stats *acc)
{
- struct mem_cgroup *iter;
+ struct mem_cgroup *mi;
int i;
- memset(events, 0, sizeof(*events) * NR_VM_EVENT_ITEMS);
+ for_each_mem_cgroup_tree(mi, memcg) {
+ for (i = 0; i < acc->stats_size; i++)
+ acc->stat[i] += memcg_page_state(mi,
+ acc->stats_array ? acc->stats_array[i] : i);
- for_each_mem_cgroup_tree(iter, memcg) {
- for (i = 0; i < NR_VM_EVENT_ITEMS; i++)
- events[i] += memcg_sum_events(iter, i);
+ for (i = 0; i < acc->events_size; i++)
+ acc->events[i] += memcg_sum_events(mi,
+ acc->events_array ? acc->events_array[i] : i);
+
+ for (i = 0; i < NR_LRU_LISTS; i++)
+ acc->lru_pages[i] +=
+ mem_cgroup_nr_lru_pages(mi, BIT(i));
}
}
@@ -3332,6 +3337,7 @@ static int memcg_stat_show(struct seq_file *m, void *v)
unsigned long memory, memsw;
struct mem_cgroup *mi;
unsigned int i;
+ struct accumulated_stats acc;
BUILD_BUG_ON(ARRAY_SIZE(memcg1_stat_names) != ARRAY_SIZE(memcg1_stats));
BUILD_BUG_ON(ARRAY_SIZE(mem_cgroup_lru_names) != NR_LRU_LISTS);
@@ -3364,32 +3370,27 @@ static int memcg_stat_show(struct seq_file *m, void *v)
seq_printf(m, "hierarchical_memsw_limit %llu\n",
(u64)memsw * PAGE_SIZE);
- for (i = 0; i < ARRAY_SIZE(memcg1_stats); i++) {
- unsigned long long val = 0;
+ memset(&acc, 0, sizeof(acc));
+ acc.stats_size = ARRAY_SIZE(memcg1_stats);
+ acc.stats_array = memcg1_stats;
+ acc.events_size = ARRAY_SIZE(memcg1_events);
+ acc.events_array = memcg1_events;
+ accumulate_memcg_tree(memcg, &acc);
+ for (i = 0; i < ARRAY_SIZE(memcg1_stats); i++) {
if (memcg1_stats[i] == MEMCG_SWAP && !do_memsw_account())
continue;
- for_each_mem_cgroup_tree(mi, memcg)
- val += memcg_page_state(mi, memcg1_stats[i]) *
- PAGE_SIZE;
- seq_printf(m, "total_%s %llu\n", memcg1_stat_names[i], val);
+ seq_printf(m, "total_%s %llu\n", memcg1_stat_names[i],
+ (u64)acc.stat[i] * PAGE_SIZE);
}
- for (i = 0; i < ARRAY_SIZE(memcg1_events); i++) {
- unsigned long long val = 0;
-
- for_each_mem_cgroup_tree(mi, memcg)
- val += memcg_sum_events(mi, memcg1_events[i]);
- seq_printf(m, "total_%s %llu\n", memcg1_event_names[i], val);
- }
-
- for (i = 0; i < NR_LRU_LISTS; i++) {
- unsigned long long val = 0;
+ for (i = 0; i < ARRAY_SIZE(memcg1_events); i++)
+ seq_printf(m, "total_%s %llu\n", memcg1_event_names[i],
+ (u64)acc.events[i]);
- for_each_mem_cgroup_tree(mi, memcg)
- val += mem_cgroup_nr_lru_pages(mi, BIT(i)) * PAGE_SIZE;
- seq_printf(m, "total_%s %llu\n", mem_cgroup_lru_names[i], val);
- }
+ for (i = 0; i < NR_LRU_LISTS; i++)
+ seq_printf(m, "total_%s %llu\n", mem_cgroup_lru_names[i],
+ (u64)acc.lru_pages[i] * PAGE_SIZE);
#ifdef CONFIG_DEBUG_VM
{
@@ -5486,8 +5487,7 @@ static int memory_events_show(struct seq_file *m, void *v)
static int memory_stat_show(struct seq_file *m, void *v)
{
struct mem_cgroup *memcg = mem_cgroup_from_css(seq_css(m));
- unsigned long stat[MEMCG_NR_STAT];
- unsigned long events[NR_VM_EVENT_ITEMS];
+ struct accumulated_stats acc;
int i;
/*
@@ -5501,66 +5501,62 @@ static int memory_stat_show(struct seq_file *m, void *v)
* Current memory state:
*/
- tree_stat(memcg, stat);
- tree_events(memcg, events);
+ memset(&acc, 0, sizeof(acc));
+ acc.stats_size = MEMCG_NR_STAT;
+ acc.events_size = NR_VM_EVENT_ITEMS;
+ accumulate_memcg_tree(memcg, &acc);
seq_printf(m, "anon %llu\n",
- (u64)stat[MEMCG_RSS] * PAGE_SIZE);
+ (u64)acc.stat[MEMCG_RSS] * PAGE_SIZE);
seq_printf(m, "file %llu\n",
- (u64)stat[MEMCG_CACHE] * PAGE_SIZE);
+ (u64)acc.stat[MEMCG_CACHE] * PAGE_SIZE);
seq_printf(m, "kernel_stack %llu\n",
- (u64)stat[MEMCG_KERNEL_STACK_KB] * 1024);
+ (u64)acc.stat[MEMCG_KERNEL_STACK_KB] * 1024);
seq_printf(m, "slab %llu\n",
- (u64)(stat[NR_SLAB_RECLAIMABLE] +
- stat[NR_SLAB_UNRECLAIMABLE]) * PAGE_SIZE);
+ (u64)(acc.stat[NR_SLAB_RECLAIMABLE] +
+ acc.stat[NR_SLAB_UNRECLAIMABLE]) * PAGE_SIZE);
seq_printf(m, "sock %llu\n",
- (u64)stat[MEMCG_SOCK] * PAGE_SIZE);
+ (u64)acc.stat[MEMCG_SOCK] * PAGE_SIZE);
seq_printf(m, "shmem %llu\n",
- (u64)stat[NR_SHMEM] * PAGE_SIZE);
+ (u64)acc.stat[NR_SHMEM] * PAGE_SIZE);
seq_printf(m, "file_mapped %llu\n",
- (u64)stat[NR_FILE_MAPPED] * PAGE_SIZE);
+ (u64)acc.stat[NR_FILE_MAPPED] * PAGE_SIZE);
seq_printf(m, "file_dirty %llu\n",
- (u64)stat[NR_FILE_DIRTY] * PAGE_SIZE);
+ (u64)acc.stat[NR_FILE_DIRTY] * PAGE_SIZE);
seq_printf(m, "file_writeback %llu\n",
- (u64)stat[NR_WRITEBACK] * PAGE_SIZE);
+ (u64)acc.stat[NR_WRITEBACK] * PAGE_SIZE);
- for (i = 0; i < NR_LRU_LISTS; i++) {
- struct mem_cgroup *mi;
- unsigned long val = 0;
-
- for_each_mem_cgroup_tree(mi, memcg)
- val += mem_cgroup_nr_lru_pages(mi, BIT(i));
- seq_printf(m, "%s %llu\n",
- mem_cgroup_lru_names[i], (u64)val * PAGE_SIZE);
- }
+ for (i = 0; i < NR_LRU_LISTS; i++)
+ seq_printf(m, "%s %llu\n", mem_cgroup_lru_names[i],
+ (u64)acc.lru_pages[i] * PAGE_SIZE);
seq_printf(m, "slab_reclaimable %llu\n",
- (u64)stat[NR_SLAB_RECLAIMABLE] * PAGE_SIZE);
+ (u64)acc.stat[NR_SLAB_RECLAIMABLE] * PAGE_SIZE);
seq_printf(m, "slab_unreclaimable %llu\n",
- (u64)stat[NR_SLAB_UNRECLAIMABLE] * PAGE_SIZE);
+ (u64)acc.stat[NR_SLAB_UNRECLAIMABLE] * PAGE_SIZE);
/* Accumulated memory events */
- seq_printf(m, "pgfault %lu\n", events[PGFAULT]);
- seq_printf(m, "pgmajfault %lu\n", events[PGMAJFAULT]);
+ seq_printf(m, "pgfault %lu\n", acc.events[PGFAULT]);
+ seq_printf(m, "pgmajfault %lu\n", acc.events[PGMAJFAULT]);
- seq_printf(m, "pgrefill %lu\n", events[PGREFILL]);
- seq_printf(m, "pgscan %lu\n", events[PGSCAN_KSWAPD] +
- events[PGSCAN_DIRECT]);
- seq_printf(m, "pgsteal %lu\n", events[PGSTEAL_KSWAPD] +
- events[PGSTEAL_DIRECT]);
- seq_printf(m, "pgactivate %lu\n", events[PGACTIVATE]);
- seq_printf(m, "pgdeactivate %lu\n", events[PGDEACTIVATE]);
- seq_printf(m, "pglazyfree %lu\n", events[PGLAZYFREE]);
- seq_printf(m, "pglazyfreed %lu\n", events[PGLAZYFREED]);
+ seq_printf(m, "pgrefill %lu\n", acc.events[PGREFILL]);
+ seq_printf(m, "pgscan %lu\n", acc.events[PGSCAN_KSWAPD] +
+ acc.events[PGSCAN_DIRECT]);
+ seq_printf(m, "pgsteal %lu\n", acc.events[PGSTEAL_KSWAPD] +
+ acc.events[PGSTEAL_DIRECT]);
+ seq_printf(m, "pgactivate %lu\n", acc.events[PGACTIVATE]);
+ seq_printf(m, "pgdeactivate %lu\n", acc.events[PGDEACTIVATE]);
+ seq_printf(m, "pglazyfree %lu\n", acc.events[PGLAZYFREE]);
+ seq_printf(m, "pglazyfreed %lu\n", acc.events[PGLAZYFREED]);
seq_printf(m, "workingset_refault %lu\n",
- stat[WORKINGSET_REFAULT]);
+ acc.stat[WORKINGSET_REFAULT]);
seq_printf(m, "workingset_activate %lu\n",
- stat[WORKINGSET_ACTIVATE]);
+ acc.stat[WORKINGSET_ACTIVATE]);
seq_printf(m, "workingset_nodereclaim %lu\n",
- stat[WORKINGSET_NODERECLAIM]);
+ acc.stat[WORKINGSET_NODERECLAIM]);
return 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-13 16:13:37 +0000