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Thu, 10 Dec 2020 20:23:16 -0800 (PST) From: Muchun Song To: gregkh@linuxfoundation.org, rafael@kernel.org, adobriyan@gmail.com, akpm@linux-foundation.org, hannes@cmpxchg.org, mhocko@kernel.org, vdavydov.dev@gmail.com, hughd@google.com, shakeelb@google.com, guro@fb.com, samitolvanen@google.com, feng.tang@intel.com, neilb@suse.de, iamjoonsoo.kim@lge.com, rdunlap@infradead.org Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, cgroups@vger.kernel.org, Muchun Song Subject: [PATCH v4 2/7] mm: memcontrol: convert NR_ANON_THPS account to pages Date: Fri, 11 Dec 2020 12:19:49 +0800 Message-Id: <20201211041954.79543-3-songmuchun@bytedance.com> X-Mailer: git-send-email 2.21.0 (Apple Git-122) In-Reply-To: <20201211041954.79543-1-songmuchun@bytedance.com> References: <20201211041954.79543-1-songmuchun@bytedance.com> MIME-Version: 1.0 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: The unit of NR_ANON_THPS is HPAGE_PMD_NR. Convert the NR_ANON_THPS account to pages. Signed-off-by: Muchun Song --- drivers/base/node.c | 15 +++++++++------ fs/proc/meminfo.c | 2 +- include/linux/mmzone.h | 9 +++++++++ mm/huge_memory.c | 3 ++- mm/memcontrol.c | 20 ++++++-------------- mm/page_alloc.c | 2 +- mm/rmap.c | 7 ++++--- mm/vmstat.c | 11 +++++++++-- 8 files changed, 41 insertions(+), 28 deletions(-) diff --git a/drivers/base/node.c b/drivers/base/node.c index 04f71c7bc3f8..6da0c3508bc9 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -461,8 +461,7 @@ static ssize_t node_read_meminfo(struct device *dev, nid, K(sunreclaimable) #ifdef CONFIG_TRANSPARENT_HUGEPAGE , - nid, K(node_page_state(pgdat, NR_ANON_THPS) * - HPAGE_PMD_NR), + nid, K(node_page_state(pgdat, NR_ANON_THPS)), nid, K(node_page_state(pgdat, NR_SHMEM_THPS) * HPAGE_PMD_NR), nid, K(node_page_state(pgdat, NR_SHMEM_PMDMAPPED) * @@ -519,10 +518,14 @@ static ssize_t node_read_vmstat(struct device *dev, sum_zone_numa_state(nid, i)); #endif - for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) - len += sysfs_emit_at(buf, len, "%s %lu\n", - node_stat_name(i), - node_page_state_pages(pgdat, i)); + for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) { + unsigned long pages = node_page_state_pages(pgdat, i); + + if (vmstat_item_print_in_thp(i)) + pages /= HPAGE_PMD_NR; + len += sysfs_emit_at(buf, len, "%s %lu\n", node_stat_name(i), + pages); + } return len; } diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c index d6fc74619625..a635c8a84ddf 100644 --- a/fs/proc/meminfo.c +++ b/fs/proc/meminfo.c @@ -129,7 +129,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v) #ifdef CONFIG_TRANSPARENT_HUGEPAGE show_val_kb(m, "AnonHugePages: ", - global_node_page_state(NR_ANON_THPS) * HPAGE_PMD_NR); + global_node_page_state(NR_ANON_THPS)); show_val_kb(m, "ShmemHugePages: ", global_node_page_state(NR_SHMEM_THPS) * HPAGE_PMD_NR); show_val_kb(m, "ShmemPmdMapped: ", diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index b593316bff3d..4ac95448421c 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -210,6 +210,15 @@ enum node_stat_item { }; /* + * Returns true if the item should prints in THPs. The /proc/vmstat currently + * prints number of anon, file and shmem THPs. But the item is charged in pages. + */ +static __always_inline bool vmstat_item_print_in_thp(enum node_stat_item item) +{ + return item == NR_ANON_THPS; +} + +/* * Returns true if the value is measured in bytes (most vmstat values are * measured in pages). This defines the API part, the internal representation * might be different. diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 10dd3cae5f53..66ec454120de 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -2178,7 +2178,8 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd, lock_page_memcg(page); if (atomic_add_negative(-1, compound_mapcount_ptr(page))) { /* Last compound_mapcount is gone. */ - __dec_lruvec_page_state(page, NR_ANON_THPS); + __mod_lruvec_page_state(page, NR_ANON_THPS, + -HPAGE_PMD_NR); if (TestClearPageDoubleMap(page)) { /* No need in mapcount reference anymore */ for (i = 0; i < HPAGE_PMD_NR; i++) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 8818bf64d6fe..b18e25a5cdf3 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1532,7 +1532,7 @@ static struct memory_stat memory_stats[] = { * on some architectures, the macro of HPAGE_PMD_SIZE is not * constant(e.g. powerpc). */ - { "anon_thp", 0, NR_ANON_THPS }, + { "anon_thp", PAGE_SIZE, NR_ANON_THPS }, { "file_thp", 0, NR_FILE_THPS }, { "shmem_thp", 0, NR_SHMEM_THPS }, #endif @@ -1565,8 +1565,7 @@ static int __init memory_stats_init(void) for (i = 0; i < ARRAY_SIZE(memory_stats); i++) { #ifdef CONFIG_TRANSPARENT_HUGEPAGE - if (memory_stats[i].idx == NR_ANON_THPS || - memory_stats[i].idx == NR_FILE_THPS || + if (memory_stats[i].idx == NR_FILE_THPS || memory_stats[i].idx == NR_SHMEM_THPS) memory_stats[i].ratio = HPAGE_PMD_SIZE; #endif @@ -4088,10 +4087,6 @@ static int memcg_stat_show(struct seq_file *m, void *v) if (memcg1_stats[i] == MEMCG_SWAP && !do_memsw_account()) continue; nr = memcg_page_state_local(memcg, memcg1_stats[i]); -#ifdef CONFIG_TRANSPARENT_HUGEPAGE - if (memcg1_stats[i] == NR_ANON_THPS) - nr *= HPAGE_PMD_NR; -#endif seq_printf(m, "%s %lu\n", memcg1_stat_names[i], nr * PAGE_SIZE); } @@ -4122,10 +4117,6 @@ static int memcg_stat_show(struct seq_file *m, void *v) if (memcg1_stats[i] == MEMCG_SWAP && !do_memsw_account()) continue; nr = memcg_page_state(memcg, memcg1_stats[i]); -#ifdef CONFIG_TRANSPARENT_HUGEPAGE - if (memcg1_stats[i] == NR_ANON_THPS) - nr *= HPAGE_PMD_NR; -#endif seq_printf(m, "total_%s %llu\n", memcg1_stat_names[i], (u64)nr * PAGE_SIZE); } @@ -5653,10 +5644,11 @@ static int mem_cgroup_move_account(struct page *page, __mod_lruvec_state(from_vec, NR_ANON_MAPPED, -nr_pages); __mod_lruvec_state(to_vec, NR_ANON_MAPPED, nr_pages); if (PageTransHuge(page)) { - __dec_lruvec_state(from_vec, NR_ANON_THPS); - __inc_lruvec_state(to_vec, NR_ANON_THPS); + __mod_lruvec_state(from_vec, NR_ANON_THPS, + -nr_pages); + __mod_lruvec_state(to_vec, NR_ANON_THPS, + nr_pages); } - } } else { __mod_lruvec_state(from_vec, NR_FILE_PAGES, -nr_pages); diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 469e28f95ce7..1700f52b7869 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -5580,7 +5580,7 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask) K(node_page_state(pgdat, NR_SHMEM_THPS) * HPAGE_PMD_NR), K(node_page_state(pgdat, NR_SHMEM_PMDMAPPED) * HPAGE_PMD_NR), - K(node_page_state(pgdat, NR_ANON_THPS) * HPAGE_PMD_NR), + K(node_page_state(pgdat, NR_ANON_THPS)), #endif K(node_page_state(pgdat, NR_WRITEBACK_TEMP)), node_page_state(pgdat, NR_KERNEL_STACK_KB), diff --git a/mm/rmap.c b/mm/rmap.c index 08c56aaf72eb..f59e92e26b61 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -1144,7 +1144,8 @@ void do_page_add_anon_rmap(struct page *page, * disabled. */ if (compound) - __inc_lruvec_page_state(page, NR_ANON_THPS); + __mod_lruvec_page_state(page, NR_ANON_THPS, + HPAGE_PMD_NR); __mod_lruvec_page_state(page, NR_ANON_MAPPED, nr); } @@ -1186,7 +1187,7 @@ void page_add_new_anon_rmap(struct page *page, if (hpage_pincount_available(page)) atomic_set(compound_pincount_ptr(page), 0); - __inc_lruvec_page_state(page, NR_ANON_THPS); + __mod_lruvec_page_state(page, NR_ANON_THPS, HPAGE_PMD_NR); } else { /* Anon THP always mapped first with PMD */ VM_BUG_ON_PAGE(PageTransCompound(page), page); @@ -1292,7 +1293,7 @@ static void page_remove_anon_compound_rmap(struct page *page) if (!IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE)) return; - __dec_lruvec_page_state(page, NR_ANON_THPS); + __mod_lruvec_page_state(page, NR_ANON_THPS, -HPAGE_PMD_NR); if (TestClearPageDoubleMap(page)) { /* diff --git a/mm/vmstat.c b/mm/vmstat.c index 663f49ed1fd6..37c9e7b21e1e 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -1624,8 +1624,12 @@ static void zoneinfo_show_print(struct seq_file *m, pg_data_t *pgdat, if (is_zone_first_populated(pgdat, zone)) { seq_printf(m, "\n per-node stats"); for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) { + unsigned long pages = node_page_state_pages(pgdat, i); + + if (vmstat_item_print_in_thp(i)) + pages /= HPAGE_PMD_NR; seq_printf(m, "\n %-12s %lu", node_stat_name(i), - node_page_state_pages(pgdat, i)); + pages); } } seq_printf(m, @@ -1745,8 +1749,11 @@ static void *vmstat_start(struct seq_file *m, loff_t *pos) v += NR_VM_NUMA_STAT_ITEMS; #endif - for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) + for (i = 0; i < NR_VM_NODE_STAT_ITEMS; i++) { v[i] = global_node_page_state_pages(i); + if (vmstat_item_print_in_thp(i)) + v[i] /= HPAGE_PMD_NR; + } v += NR_VM_NODE_STAT_ITEMS; global_dirty_limits(v + NR_DIRTY_BG_THRESHOLD,