linux-kernel - [PATCH 08/17] ABI: sysfs-kernel-slab: Document some stats

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Message-Id: <8960435734c5aa918568ce7891171448c4d68709.1632750608.git.mchehab+huawei@kernel.org>
Date:   Mon, 27 Sep 2021 15:59:41 +0200
From:   Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To:     Linux Doc Mailing List <linux-doc@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        "Jonathan Corbet" <corbet@....net>,
        Christoph Lameter <cl@...ux.com>,
        David Windsor <dave@...lcore.net>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Kees Cook <keescook@...omium.org>,
        Pekka Enberg <penberg@...nel.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Tom Rix <trix@...hat.com>, linux-kernel@...r.kernel.org
Subject: [PATCH 08/17] ABI: sysfs-kernel-slab: Document some stats

Document three slab stats that were added in 2011 and 2017.

Fixes: 49e2258586b4 ("slub: per cpu cache for partial pages")
Fixes: 8eb8284b4129 ("usercopy: Prepare for usercopy whitelisting")

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
---

See [PATCH 00/17] at: https://lore.kernel.org/all/cover.1632750608.git.mchehab+huawei@kernel.org/

 Documentation/ABI/testing/sysfs-kernel-slab | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-kernel-slab b/Documentation/ABI/testing/sysfs-kernel-slab
index 77e5840b00a5..c440f4946e12 100644
--- a/Documentation/ABI/testing/sysfs-kernel-slab
+++ b/Documentation/ABI/testing/sysfs-kernel-slab
@@ -496,3 +496,24 @@ Contact:	Pekka Enberg <penberg@...helsinki.fi>,
 Description:
 		Writing to the validate file causes SLUB to traverse all of its
 		cache's objects and check the validity of metadata.
+
+What:		/sys/kernel/slab/<cache>/usersize
+Date:		Jun 2017
+Contact:	David Windsor <dave@...lcore.net>
+Description:
+		The usersize file is read-only and contains the usercopy
+		region size.
+
+What:		/sys/kernel/slab/<cache>/slabs_cpu_partial
+Date:		Aug 2011
+Contact:	Christoph Lameter <cl@...ux.com>
+Description:
+		This read-only file shows the number of partialli allocated
+		frozen slabs.
+
+What:		/sys/kernel/slab/<cache>/cpu_partial
+Date:		Aug 2011
+Contact:	Christoph Lameter <cl@...ux.com>
+Description:
+		This read-only file shows the number of per cpu partial
+		pages to keep around.
-- 
2.31.1