diff options
| -rw-r--r-- | Documentation/admin-guide/cgroup-v2.rst | 69 | ||||
| -rw-r--r-- | mm/memcontrol.c | 170 |
2 files changed, 159 insertions, 80 deletions
diff --git a/Documentation/admin-guide/cgroup-v2.rst b/Documentation/admin-guide/cgroup-v2.rst index baa07b30845e..608d7c279396 100644 --- a/Documentation/admin-guide/cgroup-v2.rst +++ b/Documentation/admin-guide/cgroup-v2.rst @@ -1259,6 +1259,10 @@ PAGE_SIZE multiple when read back. can show up in the middle. Don't rely on items remaining in a fixed position; use the keys to look up specific values! + If the entry has no per-node counter(or not show in the + mempry.numa_stat). We use 'npn'(non-per-node) as the tag + to indicate that it will not show in the mempry.numa_stat. + anon Amount of memory used in anonymous mappings such as brk(), sbrk(), and mmap(MAP_ANONYMOUS) @@ -1270,15 +1274,11 @@ PAGE_SIZE multiple when read back. kernel_stack Amount of memory allocated to kernel stacks. - slab - Amount of memory used for storing in-kernel data - structures. - - percpu + percpu(npn) Amount of memory used for storing per-cpu kernel data structures. - sock + sock(npn) Amount of memory used in network transmission buffers shmem @@ -1318,11 +1318,9 @@ PAGE_SIZE multiple when read back. Part of "slab" that cannot be reclaimed on memory pressure. - pgfault - Total number of page faults incurred - - pgmajfault - Number of major page faults incurred + slab(npn) + Amount of memory used for storing in-kernel data + structures. workingset_refault_anon Number of refaults of previously evicted anonymous pages. @@ -1348,37 +1346,68 @@ PAGE_SIZE multiple when read back. workingset_nodereclaim Number of times a shadow node has been reclaimed - pgrefill + pgfault(npn) + Total number of page faults incurred + + pgmajfault(npn) + Number of major page faults incurred + + pgrefill(npn) Amount of scanned pages (in an active LRU list) - pgscan + pgscan(npn) Amount of scanned pages (in an inactive LRU list) - pgsteal + pgsteal(npn) Amount of reclaimed pages - pgactivate + pgactivate(npn) Amount of pages moved to the active LRU list - pgdeactivate + pgdeactivate(npn) Amount of pages moved to the inactive LRU list - pglazyfree + pglazyfree(npn) Amount of pages postponed to be freed under memory pressure - pglazyfreed + pglazyfreed(npn) Amount of reclaimed lazyfree pages - thp_fault_alloc + thp_fault_alloc(npn) Number of transparent hugepages which were allocated to satisfy a page fault. This counter is not present when CONFIG_TRANSPARENT_HUGEPAGE is not set. - thp_collapse_alloc + thp_collapse_alloc(npn) Number of transparent hugepages which were allocated to allow collapsing an existing range of pages. This counter is not present when CONFIG_TRANSPARENT_HUGEPAGE is not set. + memory.numa_stat + A read-only nested-keyed file which exists on non-root cgroups. + + This breaks down the cgroup's memory footprint into different + types of memory, type-specific details, and other information + per node on the state of the memory management system. + + This is useful for providing visibility into the NUMA locality + information within an memcg since the pages are allowed to be + allocated from any physical node. One of the use case is evaluating + application performance by combining this information with the + application's CPU allocation. + + All memory amounts are in bytes. + + The output format of memory.numa_stat is:: + + type N0=<bytes in node 0> N1=<bytes in node 1> ... + + The entries are ordered to be human readable, and new entries + can show up in the middle. Don't rely on items remaining in a + fixed position; use the keys to look up specific values! + + The entries can refer to the memory.stat. + memory.swap.current A read-only single value file which exists on non-root cgroups. diff --git a/mm/memcontrol.c b/mm/memcontrol.c index a0bfc92804b7..e9fa32a943c5 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1448,6 +1448,70 @@ static bool mem_cgroup_wait_acct_move(struct mem_cgroup *memcg) return false; } +struct memory_stat { + const char *name; + unsigned int ratio; + unsigned int idx; +}; + +static struct memory_stat memory_stats[] = { + { "anon", PAGE_SIZE, NR_ANON_MAPPED }, + { "file", PAGE_SIZE, NR_FILE_PAGES }, + { "kernel_stack", 1024, NR_KERNEL_STACK_KB }, + { "percpu", 1, MEMCG_PERCPU_B }, + { "sock", PAGE_SIZE, MEMCG_SOCK }, + { "shmem", PAGE_SIZE, NR_SHMEM }, + { "file_mapped", PAGE_SIZE, NR_FILE_MAPPED }, + { "file_dirty", PAGE_SIZE, NR_FILE_DIRTY }, + { "file_writeback", PAGE_SIZE, NR_WRITEBACK }, +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + /* + * The ratio will be initialized in memory_stats_init(). Because + * on some architectures, the macro of HPAGE_PMD_SIZE is not + * constant(e.g. powerpc). + */ + { "anon_thp", 0, NR_ANON_THPS }, +#endif + { "inactive_anon", PAGE_SIZE, NR_INACTIVE_ANON }, + { "active_anon", PAGE_SIZE, NR_ACTIVE_ANON }, + { "inactive_file", PAGE_SIZE, NR_INACTIVE_FILE }, + { "active_file", PAGE_SIZE, NR_ACTIVE_FILE }, + { "unevictable", PAGE_SIZE, NR_UNEVICTABLE }, + + /* + * Note: The slab_reclaimable and slab_unreclaimable must be + * together and slab_reclaimable must be in front. + */ + { "slab_reclaimable", 1, NR_SLAB_RECLAIMABLE_B }, + { "slab_unreclaimable", 1, NR_SLAB_UNRECLAIMABLE_B }, + + /* The memory events */ + { "workingset_refault_anon", 1, WORKINGSET_REFAULT_ANON }, + { "workingset_refault_file", 1, WORKINGSET_REFAULT_FILE }, + { "workingset_activate_anon", 1, WORKINGSET_ACTIVATE_ANON }, + { "workingset_activate_file", 1, WORKINGSET_ACTIVATE_FILE }, + { "workingset_restore_anon", 1, WORKINGSET_RESTORE_ANON }, + { "workingset_restore_file", 1, WORKINGSET_RESTORE_FILE }, + { "workingset_nodereclaim", 1, WORKINGSET_NODERECLAIM }, +}; + +static int __init memory_stats_init(void) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(memory_stats); i++) { +#ifdef CONFIG_TRANSPARENT_HUGEPAGE + if (memory_stats[i].idx == NR_ANON_THPS) + memory_stats[i].ratio = HPAGE_PMD_SIZE; +#endif + VM_BUG_ON(!memory_stats[i].ratio); + VM_BUG_ON(memory_stats[i].idx >= MEMCG_NR_STAT); + } + + return 0; +} +pure_initcall(memory_stats_init); + static char *memory_stat_format(struct mem_cgroup *memcg) { struct seq_buf s; @@ -1468,52 +1532,19 @@ static char *memory_stat_format(struct mem_cgroup *memcg) * Current memory state: */ - seq_buf_printf(&s, "anon %llu\n", - (u64)memcg_page_state(memcg, NR_ANON_MAPPED) * - PAGE_SIZE); - seq_buf_printf(&s, "file %llu\n", - (u64)memcg_page_state(memcg, NR_FILE_PAGES) * - PAGE_SIZE); - seq_buf_printf(&s, "kernel_stack %llu\n", - (u64)memcg_page_state(memcg, NR_KERNEL_STACK_KB) * - 1024); - seq_buf_printf(&s, "slab %llu\n", - (u64)(memcg_page_state(memcg, NR_SLAB_RECLAIMABLE_B) + - memcg_page_state(memcg, NR_SLAB_UNRECLAIMABLE_B))); - seq_buf_printf(&s, "percpu %llu\n", - (u64)memcg_page_state(memcg, MEMCG_PERCPU_B)); - seq_buf_printf(&s, "sock %llu\n", - (u64)memcg_page_state(memcg, MEMCG_SOCK) * - PAGE_SIZE); - - seq_buf_printf(&s, "shmem %llu\n", - (u64)memcg_page_state(memcg, NR_SHMEM) * - PAGE_SIZE); - seq_buf_printf(&s, "file_mapped %llu\n", - (u64)memcg_page_state(memcg, NR_FILE_MAPPED) * - PAGE_SIZE); - seq_buf_printf(&s, "file_dirty %llu\n", - (u64)memcg_page_state(memcg, NR_FILE_DIRTY) * - PAGE_SIZE); - seq_buf_printf(&s, "file_writeback %llu\n", - (u64)memcg_page_state(memcg, NR_WRITEBACK) * - PAGE_SIZE); - -#ifdef CONFIG_TRANSPARENT_HUGEPAGE - seq_buf_printf(&s, "anon_thp %llu\n", - (u64)memcg_page_state(memcg, NR_ANON_THPS) * - HPAGE_PMD_SIZE); -#endif + for (i = 0; i < ARRAY_SIZE(memory_stats); i++) { + u64 size; - for (i = 0; i < NR_LRU_LISTS; i++) - seq_buf_printf(&s, "%s %llu\n", lru_list_name(i), - (u64)memcg_page_state(memcg, NR_LRU_BASE + i) * - PAGE_SIZE); + size = memcg_page_state(memcg, memory_stats[i].idx); + size *= memory_stats[i].ratio; + seq_buf_printf(&s, "%s %llu\n", memory_stats[i].name, size); - seq_buf_printf(&s, "slab_reclaimable %llu\n", - (u64)memcg_page_state(memcg, NR_SLAB_RECLAIMABLE_B)); - seq_buf_printf(&s, "slab_unreclaimable %llu\n", - (u64)memcg_page_state(memcg, NR_SLAB_UNRECLAIMABLE_B)); + if (unlikely(memory_stats[i].idx == NR_SLAB_UNRECLAIMABLE_B)) { + size = memcg_page_state(memcg, NR_SLAB_RECLAIMABLE_B) + + memcg_page_state(memcg, NR_SLAB_UNRECLAIMABLE_B); + seq_buf_printf(&s, "slab %llu\n", size); + } + } /* Accumulated memory events */ @@ -1521,22 +1552,6 @@ static char *memory_stat_format(struct mem_cgroup *memcg) memcg_events(memcg, PGFAULT)); seq_buf_printf(&s, "%s %lu\n", vm_event_name(PGMAJFAULT), memcg_events(memcg, PGMAJFAULT)); - - seq_buf_printf(&s, "workingset_refault_anon %lu\n", - memcg_page_state(memcg, WORKINGSET_REFAULT_ANON)); - seq_buf_printf(&s, "workingset_refault_file %lu\n", - memcg_page_state(memcg, WORKINGSET_REFAULT_FILE)); - seq_buf_printf(&s, "workingset_activate_anon %lu\n", - memcg_page_state(memcg, WORKINGSET_ACTIVATE_ANON)); - seq_buf_printf(&s, "workingset_activate_file %lu\n", - memcg_page_state(memcg, WORKINGSET_ACTIVATE_FILE)); - seq_buf_printf(&s, "workingset_restore_anon %lu\n", - memcg_page_state(memcg, WORKINGSET_RESTORE_ANON)); - seq_buf_printf(&s, "workingset_restore_file %lu\n", - memcg_page_state(memcg, WORKINGSET_RESTORE_FILE)); - seq_buf_printf(&s, "workingset_nodereclaim %lu\n", - memcg_page_state(memcg, WORKINGSET_NODERECLAIM)); - seq_buf_printf(&s, "%s %lu\n", vm_event_name(PGREFILL), memcg_events(memcg, PGREFILL)); seq_buf_printf(&s, "pgscan %lu\n", @@ -6374,6 +6389,35 @@ static int memory_stat_show(struct seq_file *m, void *v) return 0; } +#ifdef CONFIG_NUMA +static int memory_numa_stat_show(struct seq_file *m, void *v) +{ + int i; + struct mem_cgroup *memcg = mem_cgroup_from_seq(m); + + for (i = 0; i < ARRAY_SIZE(memory_stats); i++) { + int nid; + + if (memory_stats[i].idx >= NR_VM_NODE_STAT_ITEMS) + continue; + + seq_printf(m, "%s", memory_stats[i].name); + for_each_node_state(nid, N_MEMORY) { + u64 size; + struct lruvec *lruvec; + + lruvec = mem_cgroup_lruvec(memcg, NODE_DATA(nid)); + size = lruvec_page_state(lruvec, memory_stats[i].idx); + size *= memory_stats[i].ratio; + seq_printf(m, " N%d=%llu", nid, size); + } + seq_putc(m, '\n'); + } + + return 0; +} +#endif + static int memory_oom_group_show(struct seq_file *m, void *v) { struct mem_cgroup *memcg = mem_cgroup_from_seq(m); @@ -6451,6 +6495,12 @@ static struct cftype memory_files[] = { .name = "stat", .seq_show = memory_stat_show, }, +#ifdef CONFIG_NUMA + { + .name = "numa_stat", + .seq_show = memory_numa_stat_show, + }, +#endif { .name = "oom.group", .flags = CFTYPE_NOT_ON_ROOT | CFTYPE_NS_DELEGATABLE, |