linux-kernel - [PATCH 0/1] man/set_mempolicy.2,mbind.2: add MPOL

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Message-Id: <20160927131948.11974-1-kwapulinski.piotr@gmail.com>
Date:   Tue, 27 Sep 2016 15:19:48 +0200
From:   Piotr Kwapulinski <kwapulinski.piotr@...il.com>
To:     mtk.manpages@...il.com
Cc:     kirill.shutemov@...ux.intel.com, vbabka@...e.cz,
        rientjes@...gle.com, mhocko@...nel.org,
        mgorman@...hsingularity.net, liangchen.linux@...il.com,
        nzimmer@....com, a.p.zijlstra@...llo.nl, cl@...ux.com,
        riel@...hat.com, lee.schermerhorn@...com, jmarchan@...hat.com,
        joe@...ches.com, corbet@....net, iamyooon@...il.com,
        n-horiguchi@...jp.nec.com, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, linux-man@...r.kernel.org,
        akpm@...ux-foundation.org, linux-doc@...r.kernel.org,
        linux-api@...r.kernel.org, kwapulinski.piotr@...il.com
Subject: [PATCH 0/1] man/set_mempolicy.2,mbind.2: add MPOL_LOCAL NUMA memory policy documentation

The MPOL_LOCAL mode has been implemented by
Peter Zijlstra <a.p.zijlstra@...llo.nl>
(commit: 479e2802d09f1e18a97262c4c6f8f17ae5884bd8).
Add the documentation for this mode.

Signed-off-by: Piotr Kwapulinski <kwapulinski.piotr@...il.com>
---
 man2/mbind.2         | 16 ++++++++++++----
 man2/set_mempolicy.2 | 11 ++++++++++-
 2 files changed, 22 insertions(+), 5 deletions(-)

diff --git a/man2/mbind.2 b/man2/mbind.2
index 3ea24f6..b184f4e 100644
--- a/man2/mbind.2
+++ b/man2/mbind.2
@@ -130,8 +130,9 @@ argument must specify one of
 .BR MPOL_DEFAULT ,
 .BR MPOL_BIND ,
 .BR MPOL_INTERLEAVE ,
+.BR MPOL_PREFERRED ,
 or
-.BR MPOL_PREFERRED .
+.BR MPOL_LOCAL .
 All policy modes except
 .B MPOL_DEFAULT
 require the caller to specify via the
@@ -258,9 +259,14 @@ and
 .I maxnode
 arguments specify the empty set, then the memory is allocated on
 the node of the CPU that triggered the allocation.
-This is the only way to specify "local allocation" for a
-range of memory via
-.BR mbind ().
+
+.B MPOL_LOCAL
+specifies the "local allocation", the memory is allocated on
+the node of the CPU that triggered the allocation. The
+.I nodemask
+and
+.I maxnode
+arguments must specify the empty set.
 
 If
 .B MPOL_MF_STRICT
@@ -440,6 +446,8 @@ To select explicit "local allocation" for a memory range,
 specify a
 .I mode
 of
+.B MPOL_LOCAL
+or
 .B MPOL_PREFERRED
 with an empty set of nodes.
 This method will work for
diff --git a/man2/set_mempolicy.2 b/man2/set_mempolicy.2
index 1f02037..5755322 100644
--- a/man2/set_mempolicy.2
+++ b/man2/set_mempolicy.2
@@ -79,8 +79,9 @@ argument must specify one of
 .BR MPOL_DEFAULT ,
 .BR MPOL_BIND ,
 .BR MPOL_INTERLEAVE ,
+.BR MPOL_PREFERRED ,
 or
-.BR MPOL_PREFERRED .
+.BR MPOL_LOCAL .
 All modes except
 .B MPOL_DEFAULT
 require the caller to specify via the
@@ -211,6 +212,14 @@ arguments specify the empty set, then the policy
 specifies "local allocation"
 (like the system default policy discussed above).
 
+.B MPOL_LOCAL
+specifies the "local allocation" (like the system default policy
+discussed above). The
+.I nodemask
+and
+.I maxnode
+arguments must specify the empty set.
+
 The thread memory policy is preserved across an
 .BR execve (2),
 and is inherited by child threads created using
-- 
2.10.0