linux-kernel - [PATCH v2 9/9] Documentation: add ksm

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Message-Id: <20250501041739.3324672-1-xu.xin16@zte.com.cn>
Date: Thu,  1 May 2025 04:17:39 +0000
From: xu.xin.sc@...il.com
To: xu.xin16@....com.cn
Cc: akpm@...ux-foundation.org,
	david@...hat.com,
	linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-mm@...ck.org,
	wang.yaxin@....com.cn,
	yang.yang29@....com.cn
Subject: [PATCH v2 9/9] Documentation: add ksm_stat description in cgroup-v2.rst

From: xu xin <xu.xin16@....com.cn>

This updates ksm_stat description in cgroup-v2.rst.

Signed-off-by: xu xin <xu.xin16@....com.cn>
---
 Documentation/admin-guide/cgroup-v2.rst | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Documentation/admin-guide/cgroup-v2.rst b/Documentation/admin-guide/cgroup-v2.rst
index 8fb14ffab7d1..acab4c9c6e25 100644
--- a/Documentation/admin-guide/cgroup-v2.rst
+++ b/Documentation/admin-guide/cgroup-v2.rst
@@ -1718,6 +1718,18 @@ 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.
-- 
2.15.2