From: Tim Chen <tim.c.chen@linux.intel.com>
To: Michal Hocko <mhocko@suse.cz>
Cc: Tim Chen <tim.c.chen@linux.intel.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Andrew Morton <akpm@linux-foundation.org>,
Dave Hansen <dave.hansen@intel.com>,
Ying Huang <ying.huang@intel.com>,
Dan Williams <dan.j.williams@intel.com>,
David Rientjes <rientjes@google.com>,
Shakeel Butt <shakeelb@google.com>,
linux-mm@kvack.org, cgroups@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [RFC PATCH v1 04/11] mm: Report top tier memory usage in sysfs
Date: Mon, 5 Apr 2021 10:08:28 -0700 [thread overview]
Message-ID: <1196182bf902e36c8ecbf2afb7dd570e96c99ff4.1617642417.git.tim.c.chen@linux.intel.com> (raw)
In-Reply-To: <cover.1617642417.git.tim.c.chen@linux.intel.com>
In memory cgroup's sysfs, report the memory cgroup's usage
of top tier memory in a new field: "toptier_usage_in_bytes".
Signed-off-by: Tim Chen <tim.c.chen@linux.intel.com>
---
mm/memcontrol.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index fe7bb8613f5a..68590f46fa76 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -3631,6 +3631,7 @@ enum {
RES_FAILCNT,
RES_SOFT_LIMIT,
RES_TOPTIER_SOFT_LIMIT,
+ RES_TOPTIER_USAGE,
};
static u64 mem_cgroup_read_u64(struct cgroup_subsys_state *css,
@@ -3673,6 +3674,8 @@ static u64 mem_cgroup_read_u64(struct cgroup_subsys_state *css,
return (u64)memcg->soft_limit * PAGE_SIZE;
case RES_TOPTIER_SOFT_LIMIT:
return (u64)memcg->toptier_soft_limit * PAGE_SIZE;
+ case RES_TOPTIER_USAGE:
+ return (u64)page_counter_read(&memcg->toptier) * PAGE_SIZE;
default:
BUG();
}
@@ -5073,6 +5076,11 @@ static struct cftype mem_cgroup_legacy_files[] = {
.write = mem_cgroup_write,
.read_u64 = mem_cgroup_read_u64,
},
+ {
+ .name = "toptier_usage_in_bytes",
+ .private = MEMFILE_PRIVATE(_MEM, RES_TOPTIER_USAGE),
+ .read_u64 = mem_cgroup_read_u64,
+ },
{
.name = "failcnt",
.private = MEMFILE_PRIVATE(_MEM, RES_FAILCNT),
--
2.20.1
next prev parent reply other threads:[~2021-04-05 18:09 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-05 17:08 [RFC PATCH v1 00/11] Manage the top tier memory in a tiered memory Tim Chen
2021-04-05 17:08 ` [RFC PATCH v1 01/11] mm: Define top tier memory node mask Tim Chen
2021-04-05 17:08 ` [RFC PATCH v1 02/11] mm: Add soft memory limit for mem cgroup Tim Chen
2021-04-05 17:08 ` [RFC PATCH v1 03/11] mm: Account the top tier memory usage per cgroup Tim Chen
2021-04-05 17:08 ` Tim Chen [this message]
2021-04-05 17:08 ` [RFC PATCH v1 05/11] mm: Add soft_limit_top_tier tree for mem cgroup Tim Chen
2021-04-05 17:08 ` [RFC PATCH v1 06/11] mm: Handle top tier memory in cgroup soft limit memory tree utilities Tim Chen
2021-04-05 17:08 ` [RFC PATCH v1 07/11] mm: Account the total top tier memory in use Tim Chen
2021-04-05 17:08 ` [RFC PATCH v1 08/11] mm: Add toptier option for mem_cgroup_soft_limit_reclaim() Tim Chen
2021-04-05 17:08 ` [RFC PATCH v1 09/11] mm: Use kswapd to demote pages when toptier memory is tight Tim Chen
2021-04-05 17:08 ` [RFC PATCH v1 10/11] mm: Set toptier_scale_factor via sysctl Tim Chen
2021-04-05 17:08 ` [RFC PATCH v1 11/11] mm: Wakeup kswapd if toptier memory need soft reclaim Tim Chen
2021-04-06 9:08 ` [RFC PATCH v1 00/11] Manage the top tier memory in a tiered memory Michal Hocko
2021-04-07 22:33 ` Tim Chen
2021-04-08 11:52 ` Michal Hocko
2021-04-09 23:26 ` Tim Chen
2021-04-12 19:20 ` Shakeel Butt
2021-04-14 8:59 ` Jonathan Cameron
2021-04-15 0:42 ` Tim Chen
2021-04-13 2:15 ` Huang, Ying
2021-04-13 8:33 ` Michal Hocko
2021-04-12 14:03 ` Shakeel Butt
2021-04-08 17:18 ` Shakeel Butt
2021-04-08 18:00 ` Yang Shi
2021-04-08 20:29 ` Shakeel Butt
2021-04-08 20:50 ` Yang Shi
2021-04-12 14:03 ` Shakeel Butt
2021-04-09 7:24 ` Michal Hocko
2021-04-15 22:31 ` Tim Chen
2021-04-16 6:38 ` Michal Hocko
2021-04-14 23:22 ` Tim Chen
2021-04-09 2:58 ` Huang, Ying
2021-04-09 20:50 ` Yang Shi
2021-04-15 22:25 ` Tim Chen
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