From: Muchun Song <songmuchun@bytedance.com>
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, will@kernel.org, guro@fb.com, rppt@kernel.org,
tglx@linutronix.de, esyr@redhat.com, peterx@redhat.com,
krisman@collabora.com, surenb@google.com, avagin@openvz.org,
elver@google.com, rdunlap@infradead.org, iamjoonsoo.kim@lge.com
Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org, cgroups@vger.kernel.org,
Muchun Song <songmuchun@bytedance.com>
Subject: [PATCH 9/9] mm: memcontrol: make the slab calculation consistent
Date: Sat, 5 Dec 2020 21:02:24 +0800 [thread overview]
Message-ID: <20201205130224.81607-10-songmuchun@bytedance.com> (raw)
In-Reply-To: <20201205130224.81607-1-songmuchun@bytedance.com>
Although the ratio of the slab is one, we also should read the ratio
from the related memory_stats instead of hard-coding. And the local
variable of size is already the value of slab_unreclaimable. So we
do not need to read again.
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
---
mm/memcontrol.c | 112 +++++++++++++++++++++++++++++++++++++-------------------
1 file changed, 74 insertions(+), 38 deletions(-)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 48d70c1ad301..0e9e8ca7e770 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1493,48 +1493,75 @@ static bool mem_cgroup_wait_acct_move(struct mem_cgroup *memcg)
struct memory_stat {
const char *name;
- unsigned int ratio;
unsigned int idx;
};
static const struct memory_stat memory_stats[] = {
- { "anon", PAGE_SIZE, NR_ANON_MAPPED },
- { "file", PAGE_SIZE, NR_FILE_PAGES },
- { "kernel_stack", 1, NR_KERNEL_STACK_B },
- { "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 },
+ { "anon", NR_ANON_MAPPED },
+ { "file", NR_FILE_PAGES },
+ { "kernel_stack", NR_KERNEL_STACK_B },
+ { "percpu", MEMCG_PERCPU_B },
+ { "sock", MEMCG_SOCK },
+ { "shmem", NR_SHMEM },
+ { "file_mapped", NR_FILE_MAPPED },
+ { "file_dirty", NR_FILE_DIRTY },
+ { "file_writeback", NR_WRITEBACK },
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
- { "anon_thp", PAGE_SIZE, NR_ANON_THPS },
- { "file_thp", PAGE_SIZE, NR_FILE_THPS },
- { "shmem_thp", PAGE_SIZE, NR_SHMEM_THPS },
+ { "anon_thp", NR_ANON_THPS },
+ { "file_thp", NR_FILE_THPS },
+ { "shmem_thp", NR_SHMEM_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 },
+ { "inactive_anon", NR_INACTIVE_ANON },
+ { "active_anon", NR_ACTIVE_ANON },
+ { "inactive_file", NR_INACTIVE_FILE },
+ { "active_file", NR_ACTIVE_FILE },
+ { "unevictable", NR_UNEVICTABLE },
+ { "slab_reclaimable", NR_SLAB_RECLAIMABLE_B },
+ { "slab_unreclaimable", 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 },
+ { "workingset_refault_anon", WORKINGSET_REFAULT_ANON },
+ { "workingset_refault_file", WORKINGSET_REFAULT_FILE },
+ { "workingset_activate_anon", WORKINGSET_ACTIVATE_ANON },
+ { "workingset_activate_file", WORKINGSET_ACTIVATE_FILE },
+ { "workingset_restore_anon", WORKINGSET_RESTORE_ANON },
+ { "workingset_restore_file", WORKINGSET_RESTORE_FILE },
+ { "workingset_nodereclaim", WORKINGSET_NODERECLAIM },
};
+/* Translate stat items to the correct unit for memory.stat output */
+static int memcg_page_state_unit(int item)
+{
+ int unit;
+
+ switch (item) {
+ case NR_SLAB_RECLAIMABLE_B:
+ case NR_SLAB_UNRECLAIMABLE_B:
+ case WORKINGSET_REFAULT_ANON:
+ case WORKINGSET_REFAULT_FILE:
+ case WORKINGSET_ACTIVATE_ANON:
+ case WORKINGSET_ACTIVATE_FILE:
+ case WORKINGSET_RESTORE_ANON:
+ case WORKINGSET_RESTORE_FILE:
+ case WORKINGSET_NODERECLAIM:
+ case MEMCG_PERCPU_B:
+ case NR_KERNEL_STACK_B:
+ unit = 1;
+ break;
+ default:
+ unit = PAGE_SIZE;
+ break;
+ }
+
+ return unit;
+}
+
+static inline unsigned long memcg_page_state_output(struct mem_cgroup *memcg,
+ int item)
+{
+ return memcg_page_state(memcg, item) * memcg_page_state_unit(item);
+}
+
static char *memory_stat_format(struct mem_cgroup *memcg)
{
struct seq_buf s;
@@ -1558,13 +1585,16 @@ static char *memory_stat_format(struct mem_cgroup *memcg)
for (i = 0; i < ARRAY_SIZE(memory_stats); i++) {
u64 size;
- size = memcg_page_state(memcg, memory_stats[i].idx);
- size *= memory_stats[i].ratio;
+ size = memcg_page_state_output(memcg, memory_stats[i].idx);
seq_buf_printf(&s, "%s %llu\n", memory_stats[i].name, size);
+ /*
+ * We are printing reclaimable, unreclaimable of the slab
+ * and the sum of both.
+ */
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);
+ size += memcg_page_state_output(memcg,
+ NR_SLAB_RECLAIMABLE_B);
seq_buf_printf(&s, "slab %llu\n", size);
}
}
@@ -6358,6 +6388,12 @@ static int memory_stat_show(struct seq_file *m, void *v)
}
#ifdef CONFIG_NUMA
+static inline unsigned long lruvec_page_state_output(struct lruvec *lruvec,
+ int item)
+{
+ return lruvec_page_state(lruvec, item) * memcg_page_state_unit(item);
+}
+
static int memory_numa_stat_show(struct seq_file *m, void *v)
{
int i;
@@ -6375,8 +6411,8 @@ static int memory_numa_stat_show(struct seq_file *m, void *v)
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;
+ size = lruvec_page_state_output(lruvec,
+ memory_stats[i].idx);
seq_printf(m, " N%d=%llu", nid, size);
}
seq_putc(m, '\n');
--
2.11.0
prev parent reply other threads:[~2020-12-05 18:31 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-05 13:02 [PATCH 0/9] Convert all THP vmstat counters to pages Muchun Song
2020-12-05 13:02 ` [PATCH 1/9] mm: vmstat: fix stat_threshold for NR_KERNEL_STACK_KB Muchun Song
2020-12-05 13:02 ` [PATCH 2/9] mm: memcontrol: fix NR_ANON_THPS account Muchun Song
2020-12-05 13:02 ` [PATCH 3/9] mm: memcontrol: convert kernel stack account to byte-sized Muchun Song
2020-12-05 14:10 ` Greg KH
2020-12-05 13:02 ` [PATCH 4/9] mm: memcontrol: convert NR_ANON_THPS account to pages Muchun Song
2020-12-05 13:02 ` [PATCH 5/9] mm: memcontrol: convert NR_FILE_THPS " Muchun Song
2020-12-05 14:10 ` Greg KH
2020-12-05 15:29 ` [External] " Muchun Song
2020-12-05 15:32 ` Greg KH
2020-12-05 15:39 ` Muchun Song
2020-12-05 16:33 ` Greg KH
2020-12-05 16:52 ` Muchun Song
2020-12-05 17:06 ` Greg KH
2020-12-05 13:02 ` [PATCH 6/9] mm: memcontrol: convert NR_SHMEM_THPS " Muchun Song
2020-12-05 13:02 ` [PATCH 7/9] mm: memcontrol: convert NR_SHMEM_PMDMAPPED " Muchun Song
2020-12-05 13:02 ` [PATCH 8/9] mm: memcontrol: convert NR_FILE_PMDMAPPED " Muchun Song
2020-12-05 13:02 ` Muchun Song [this message]
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