The patch titled Subject: mm: memcg: print statistics from live counters has been added to the -mm tree. Its filename is mm-memcg-print-statistics-from-live-counters.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Johannes Weiner <hannes@xxxxxxxxxxx> Subject: mm: memcg: print statistics from live counters Directly print statistics and event counters instead of going through an intermediate accumulation stage into a separate array, which used to require defining statistic items in more than one place. Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx> Acked-by: Michal Hocko <mhocko@xxxxxxx> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> Cc: Ying Han <yinghan@xxxxxxxxxx> Cc: Tejun Heo <tj@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/memcontrol.c | 173 +++++++++++++++++----------------------------- 1 file changed, 66 insertions(+), 107 deletions(-) diff -puN mm/memcontrol.c~mm-memcg-print-statistics-from-live-counters mm/memcontrol.c --- a/mm/memcontrol.c~mm-memcg-print-statistics-from-live-counters +++ a/mm/memcontrol.c @@ -102,6 +102,14 @@ enum mem_cgroup_stat_index { MEM_CGROUP_STAT_NSTATS, }; +static const char *mem_cgroup_stat_names[] = { + "cache", + "rss", + "mapped_file", + "mlock", + "swap", +}; + enum mem_cgroup_events_index { MEM_CGROUP_EVENTS_PGPGIN, /* # of pages paged in */ MEM_CGROUP_EVENTS_PGPGOUT, /* # of pages paged out */ @@ -109,6 +117,14 @@ enum mem_cgroup_events_index { MEM_CGROUP_EVENTS_PGMAJFAULT, /* # of major page-faults */ MEM_CGROUP_EVENTS_NSTATS, }; + +static const char *mem_cgroup_events_names[] = { + "pgpgin", + "pgpgout", + "pgfault", + "pgmajfault", +}; + /* * Per memcg event counter is incremented at every pagein/pageout. With THP, * it will be incremated by the number of pages. This counter is used for @@ -4258,97 +4274,6 @@ static int mem_cgroup_move_charge_write( } #endif - -/* For read statistics */ -enum { - MCS_CACHE, - MCS_RSS, - MCS_FILE_MAPPED, - MCS_MLOCK, - MCS_SWAP, - MCS_PGPGIN, - MCS_PGPGOUT, - MCS_PGFAULT, - MCS_PGMAJFAULT, - MCS_INACTIVE_ANON, - MCS_ACTIVE_ANON, - MCS_INACTIVE_FILE, - MCS_ACTIVE_FILE, - MCS_UNEVICTABLE, - NR_MCS_STAT, -}; - -struct mcs_total_stat { - s64 stat[NR_MCS_STAT]; -}; - -static const char *memcg_stat_strings[NR_MCS_STAT] = { - "cache", - "rss", - "mapped_file", - "mlock", - "swap", - "pgpgin", - "pgpgout", - "pgfault", - "pgmajfault", - "inactive_anon", - "active_anon", - "inactive_file", - "active_file", - "unevictable", -}; - - -static void -mem_cgroup_get_local_stat(struct mem_cgroup *memcg, struct mcs_total_stat *s) -{ - s64 val; - - /* per cpu stat */ - val = mem_cgroup_read_stat(memcg, MEM_CGROUP_STAT_CACHE); - s->stat[MCS_CACHE] += val * PAGE_SIZE; - val = mem_cgroup_read_stat(memcg, MEM_CGROUP_STAT_RSS); - s->stat[MCS_RSS] += val * PAGE_SIZE; - val = mem_cgroup_read_stat(memcg, MEM_CGROUP_STAT_FILE_MAPPED); - s->stat[MCS_FILE_MAPPED] += val * PAGE_SIZE; - val = mem_cgroup_read_stat(memcg, MEM_CGROUP_STAT_MLOCK); - s->stat[MCS_MLOCK] += val * PAGE_SIZE; - if (do_swap_account) { - val = mem_cgroup_read_stat(memcg, MEM_CGROUP_STAT_SWAPOUT); - s->stat[MCS_SWAP] += val * PAGE_SIZE; - } - val = mem_cgroup_read_events(memcg, MEM_CGROUP_EVENTS_PGPGIN); - s->stat[MCS_PGPGIN] += val; - val = mem_cgroup_read_events(memcg, MEM_CGROUP_EVENTS_PGPGOUT); - s->stat[MCS_PGPGOUT] += val; - val = mem_cgroup_read_events(memcg, MEM_CGROUP_EVENTS_PGFAULT); - s->stat[MCS_PGFAULT] += val; - val = mem_cgroup_read_events(memcg, MEM_CGROUP_EVENTS_PGMAJFAULT); - s->stat[MCS_PGMAJFAULT] += val; - - /* per zone stat */ - val = mem_cgroup_nr_lru_pages(memcg, BIT(LRU_INACTIVE_ANON)); - s->stat[MCS_INACTIVE_ANON] += val * PAGE_SIZE; - val = mem_cgroup_nr_lru_pages(memcg, BIT(LRU_ACTIVE_ANON)); - s->stat[MCS_ACTIVE_ANON] += val * PAGE_SIZE; - val = mem_cgroup_nr_lru_pages(memcg, BIT(LRU_INACTIVE_FILE)); - s->stat[MCS_INACTIVE_FILE] += val * PAGE_SIZE; - val = mem_cgroup_nr_lru_pages(memcg, BIT(LRU_ACTIVE_FILE)); - s->stat[MCS_ACTIVE_FILE] += val * PAGE_SIZE; - val = mem_cgroup_nr_lru_pages(memcg, BIT(LRU_UNEVICTABLE)); - s->stat[MCS_UNEVICTABLE] += val * PAGE_SIZE; -} - -static void -mem_cgroup_get_total_stat(struct mem_cgroup *memcg, struct mcs_total_stat *s) -{ - struct mem_cgroup *iter; - - for_each_mem_cgroup_tree(iter, memcg) - mem_cgroup_get_local_stat(iter, s); -} - #ifdef CONFIG_NUMA static int mem_control_numa_stat_show(struct cgroup *cont, struct cftype *cft, struct seq_file *m) @@ -4396,24 +4321,40 @@ static int mem_control_numa_stat_show(st } #endif /* CONFIG_NUMA */ +static const char *mem_cgroup_lru_names[] = { + "inactive_anon", + "active_anon", + "inactive_file", + "active_file", + "unevictable", +}; +static inline void mem_cgroup_lru_names_not_uptodate(void) +{ + BUILD_BUG_ON(ARRAY_SIZE(mem_cgroup_lru_names) != NR_LRU_LISTS); +} + static int mem_control_stat_show(struct cgroup *cont, struct cftype *cft, struct seq_file *m) { struct mem_cgroup *memcg = mem_cgroup_from_cont(cont); - struct mcs_total_stat mystat; - int i; - - memset(&mystat, 0, sizeof(mystat)); - mem_cgroup_get_local_stat(memcg, &mystat); + struct mem_cgroup *mi; + unsigned int i; - - for (i = 0; i < NR_MCS_STAT; i++) { - if (i == MCS_SWAP && !do_swap_account) + for (i = 0; i < MEM_CGROUP_STAT_NSTATS; i++) { + if (i == MEM_CGROUP_STAT_SWAPOUT && !do_swap_account) continue; - seq_printf(m, "%s %llu\n", memcg_stat_strings[i], - (unsigned long long)mystat.stat[i]); + seq_printf(m, "%s %ld\n", mem_cgroup_stat_names[i], + mem_cgroup_read_stat(memcg, i) * PAGE_SIZE); } + for (i = 0; i < MEM_CGROUP_EVENTS_NSTATS; i++) + seq_printf(m, "%s %lu\n", mem_cgroup_events_names[i], + mem_cgroup_read_events(memcg, i)); + + for (i = 0; i < NR_LRU_LISTS; i++) + seq_printf(m, "%s %lu\n", mem_cgroup_lru_names[i], + mem_cgroup_nr_lru_pages(memcg, BIT(i)) * PAGE_SIZE); + /* Hierarchical information */ { unsigned long long limit, memsw_limit; @@ -4424,13 +4365,31 @@ static int mem_control_stat_show(struct memsw_limit); } - memset(&mystat, 0, sizeof(mystat)); - mem_cgroup_get_total_stat(memcg, &mystat); - for (i = 0; i < NR_MCS_STAT; i++) { - if (i == MCS_SWAP && !do_swap_account) + for (i = 0; i < MEM_CGROUP_STAT_NSTATS; i++) { + long long val = 0; + + if (i == MEM_CGROUP_STAT_SWAPOUT && !do_swap_account) continue; - seq_printf(m, "total_%s %llu\n", memcg_stat_strings[i], - (unsigned long long)mystat.stat[i]); + for_each_mem_cgroup_tree(mi, memcg) + val += mem_cgroup_read_stat(mi, i) * PAGE_SIZE; + seq_printf(m, "total_%s %lld\n", mem_cgroup_stat_names[i], val); + } + + for (i = 0; i < MEM_CGROUP_EVENTS_NSTATS; i++) { + unsigned long long val = 0; + + for_each_mem_cgroup_tree(mi, memcg) + val += mem_cgroup_read_events(mi, i); + seq_printf(m, "total_%s %llu\n", + mem_cgroup_events_names[i], val); + } + + for (i = 0; i < NR_LRU_LISTS; i++) { + unsigned long long val = 0; + + 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); } #ifdef CONFIG_DEBUG_VM _ Subject: Subject: mm: memcg: print statistics from live counters Patches currently in -mm which might be from hannes@xxxxxxxxxxx are linux-next.patch mm-slab-remove-duplicate-check.patch mm-remove-swap-token-code.patch hugetlb-rename-max_hstate-to-hugetlb_max_hstate.patch hugetlbfs-dont-use-err_ptr-with-vm_fault-values.patch hugetlbfs-add-an-inline-helper-for-finding-hstate-index.patch hugetlb-use-mmu_gather-instead-of-a-temporary-linked-list-for-accumulating-pages.patch hugetlb-use-mmu_gather-instead-of-a-temporary-linked-list-for-accumulating-pages-fix.patch hugetlb-use-mmu_gather-instead-of-a-temporary-linked-list-for-accumulating-pages-fix-fix.patch hugetlb-avoid-taking-i_mmap_mutex-in-unmap_single_vma-for-hugetlb.patch hugetlb-simplify-migrate_huge_page.patch memcg-add-hugetlb-extension.patch memcg-add-hugetlb-extension-fix.patch memcg-add-hugetlb-extension-fix-fix.patch hugetlb-add-charge-uncharge-calls-for-hugetlb-alloc-free.patch memcg-track-resource-index-in-cftype-private.patch hugetlbfs-add-memcg-control-files-for-hugetlbfs.patch hugetlbfs-add-memcg-control-files-for-hugetlbfs-use-scnprintf-instead-of-sprintf.patch hugetlbfs-add-memcg-control-files-for-hugetlbfs-use-scnprintf-instead-of-sprintf-fix.patch hugetlbfs-add-a-list-for-tracking-in-use-hugetlb-pages.patch memcg-move-hugetlb-resource-count-to-parent-cgroup-on-memcg-removal.patch memcg-move-hugetlb-resource-count-to-parent-cgroup-on-memcg-removal-fix.patch memcg-move-hugetlb-resource-count-to-parent-cgroup-on-memcg-removal-fix-fix.patch hugetlb-migrate-memcg-info-from-oldpage-to-new-page-during-migration.patch memcg-add-memory-controller-documentation-for-hugetlb-management.patch kernel-cgroup-push-rcu-read-locking-from-css_is_ancestor-to-callsite.patch mm-memcg-count-pte-references-from-every-member-of-the-reclaimed-hierarchy.patch mm-memcg-count-pte-references-from-every-member-of-the-reclaimed-hierarchy-fix.patch mm-thp-drop-page_table_lock-to-uncharge-memcg-pages.patch documentation-memcg-future-proof-hierarchical-statistics-documentation.patch mm-bootmem-fix-checking-the-bitmap-when-finally-freeing-bootmem.patch mm-bootmem-remove-redundant-offset-check-when-finally-freeing-bootmem.patch mm-bootmem-rename-alloc_bootmem_core-to-alloc_bootmem_bdata.patch mm-bootmem-split-out-goal-to-node-mapping-from-goal-dropping.patch mm-bootmem-allocate-in-order-nodegoal-goal-node-anywhere.patch mm-bootmem-unify-allocation-policy-of-non-panicking-node-allocations.patch mm-nobootmem-panic-on-node-specific-allocation-failure.patch mm-nobootmem-unify-allocation-policy-of-non-panicking-node-allocations.patch mm-bootmem-pass-pgdat-instead-of-pgdat-bdata-down-the-stack.patch mm-remove-sparsemem-allocation-details-from-the-bootmem-allocator.patch mm-remove-sparsemem-allocation-details-from-the-bootmem-allocator-fix.patch mm-remove-sparsemem-allocation-details-from-the-bootmem-allocator-fix-2.patch memcg-fix-change-behavior-of-shared-anon-at-moving-task.patch memcg-swap-mem_cgroup_move_swap_account-never-needs-fixup.patch memcg-swap-use-mem_cgroup_uncharge_swap.patch mm-memcg-scanning_global_lru-means-mem_cgroup_disabled.patch mm-memcg-move-reclaim_stat-into-lruvec.patch mm-push-lru-index-into-shrink_active_list.patch mm-push-lru-index-into-shrink_active_list-fix.patch mm-mark-mm-inline-functions-as-__always_inline.patch mm-remove-lru-type-checks-from-__isolate_lru_page.patch mm-memcg-kill-mem_cgroup_lru_del.patch memcg-revise-the-position-of-threshold-index-while-unregistering-event.patch mm-memcg-use-vm_swappiness-from-target-memory-cgroup.patch memcg-add-mlock-statistic-in-memorystat.patch memcg-add-mlock-statistic-in-memorystat-fix.patch memcg-fix-error-code-in-hugetlb_force_memcg_empty.patch rescounters-add-res_counter_uncharge_until.patch memcg-use-res_counter_uncharge_until-in-move_parent.patch memcg-move-charges-to-root-cgroup-if-use_hierarchy=0.patch memcg-dont-uncharge-in-mem_cgroup_move_account.patch remove-__must_check-for-res_counter_charge_nofail.patch mm-memcg-remove-obsolete-statistics-array-boundary-enum-item.patch mm-memcg-convert-numa-stat-to-read_seq_string-interface.patch mm-memcg-print-statistics-directly-to-seq_file.patch mm-memcg-keep-ratelimit-counter-separate-from-event-counters.patch mm-memcg-group-swapped-out-statistics-counter-logically.patch mm-memcg-print-statistics-from-live-counters.patch mm-memcg-print-statistics-from-live-counters-checkpatch-fixes.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html