patches/old/documentation-add-ksm_stat-description-in-cgroup-v2rst.patch

From: xu xin <xu.xin16@zte.com.cn>
Subject: Documentation: add ksm_stat description in cgroup-v2.rst
Date: Thu, 1 May 2025 04:17:39 +0000

This updates ksm_stat description in cgroup-v2.rst.

Link: https://lkml.kernel.org/r/20250501041739.3324672-1-xu.xin16@zte.com.cn
Signed-off-by: xu xin <xu.xin16@zte.com.cn>
Cc: David Hildenbrand <david@redhat.com>
Cc: Haonan Chen <chen.haonan2@zte.com.cn>
Cc: Wang Yaxin <wang.yaxin@zte.com.cn>
Cc: Yang Yang <yang.yang29@zte.com.cn>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 Documentation/admin-guide/cgroup-v2.rst |   12 ++++++++++++
 1 file changed, 12 insertions(+)

--- a/Documentation/admin-guide/cgroup-v2.rst~documentation-add-ksm_stat-description-in-cgroup-v2rst
+++ a/Documentation/admin-guide/cgroup-v2.rst
@@ -1739,6 +1739,18 @@ The following nested keys are defined.
 
 	The entries can refer to the memory.stat.
 
+  memory.ksm_stat
+        A read-only nested-keyed file.
+
+        The file can be used to observe the ksm merging status of the
+        processes within an memory cgroup. There are four items
+        including "ksm_rmap_items", "ksm_zero_pages", "ksm_merging_pages"
+        and "ksm_profit".
+
+        See
+        :ref:`Documentation/admin-guide/cgroup-v1/memory.rst ksm_stat <memcg_ksm_stat>`
+        for details.
+
   memory.swap.current
 	A read-only single value file which exists on non-root
 	cgroups.
_