---

yaml --- r: 123247 b: refs/heads/master c: e262a7b h: refs/heads/master i: 123245: 55c6f16 123243: 0af23f2 123239: 0ba4b8a 123231: d0efed4 v: v3
git-mirror · Nov 23, 2008 · 900631d · 900631d
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diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: bb758e9637e5ddcff84a97177415499ae1fed498
+refs/heads/master: e262a7ba31f0cd4dae225e6d2e9037e5ac6108e8
diff --git a/trunk/Documentation/DMA-API.txt b/trunk/Documentation/DMA-API.txt
@@ -316,10 +316,12 @@ reduce current DMA mapping usage or delay and try again later).
 	pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg,
 		int nents, int direction)
 
+Maps a scatter gather list from the block layer.
+
 Returns: the number of physical segments mapped (this may be shorter
-than <nents> passed in if some elements of the scatter/gather list are
-physically or virtually adjacent and an IOMMU maps them with a single
-entry).
+than <nents> passed in if the block layer determines that some
+elements of the scatter/gather list are physically adjacent and thus
+may be mapped with a single entry).
 
 Please note that the sg cannot be mapped again if it has been mapped once.
 The mapping process is allowed to destroy information in the sg.

diff --git a/trunk/Documentation/DocBook/Makefile b/trunk/Documentation/DocBook/Makefile
@@ -6,7 +6,7 @@
 # To add a new book the only step required is to add the book to the
 # list of DOCBOOKS.
 
-DOCBOOKS := z8530book.xml mcabook.xml \
+DOCBOOKS := wanbook.xml z8530book.xml mcabook.xml \
 	    kernel-hacking.xml kernel-locking.xml deviceiobook.xml \
 	    procfs-guide.xml writing_usb_driver.xml networking.xml \
 	    kernel-api.xml filesystems.xml lsm.xml usb.xml kgdb.xml \

diff --git a/trunk/Documentation/DocBook/networking.tmpl b/trunk/Documentation/DocBook/networking.tmpl
@@ -98,6 +98,9 @@
 X!Enet/core/wireless.c
      </sect1>
 -->
+     <sect1><title>Synchronous PPP</title>
+!Edrivers/net/wan/syncppp.c
+     </sect1>
   </chapter>
 
 </book>
diff --git a/trunk/Documentation/DocBook/wanbook.tmpl b/trunk/Documentation/DocBook/wanbook.tmpl
@@ -0,0 +1,99 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
+	"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" []>
+
+<book id="WANGuide">
+ <bookinfo>
+  <title>Synchronous PPP and Cisco HDLC Programming Guide</title>
+
+  <authorgroup>
+   <author>
+    <firstname>Alan</firstname>
+    <surname>Cox</surname>
+    <affiliation>
+     <address>
+      <email>alan@lxorguk.ukuu.org.uk</email>
+     </address>
+    </affiliation>
+   </author>
+  </authorgroup>
+
+  <copyright>
+   <year>2000</year>
+   <holder>Alan Cox</holder>
+  </copyright>
+
+  <legalnotice>
+   <para>
+     This documentation is free software; you can redistribute
+     it and/or modify it under the terms of the GNU General Public
+     License as published by the Free Software Foundation; either
+     version 2 of the License, or (at your option) any later
+     version.
+   </para>
+
+   <para>
+     This program is distributed in the hope that it will be
+     useful, but WITHOUT ANY WARRANTY; without even the implied
+     warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+     See the GNU General Public License for more details.
+   </para>
+
+   <para>
+     You should have received a copy of the GNU General Public
+     License along with this program; if not, write to the Free
+     Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+     MA 02111-1307 USA
+   </para>
+
+   <para>
+     For more details see the file COPYING in the source
+     distribution of Linux.
+   </para>
+  </legalnotice>
+ </bookinfo>
+
+<toc></toc>
+
+  <chapter id="intro">
+      <title>Introduction</title>
+  <para>
+	The syncppp drivers in Linux provide a fairly complete 
+	implementation of Cisco HDLC and a minimal implementation of
+	PPP. The longer term goal is to switch the PPP layer to the
+	generic PPP interface that is new in Linux 2.3.x. The API should
+	remain unchanged when this is done, but support will then be
+	available for IPX, compression and other PPP features
+  </para>
+  </chapter>
+  <chapter id="bugs">
+     <title>Known Bugs And Assumptions</title>
+  <para>
+  <variablelist>
+    <varlistentry><term>PPP is minimal</term>
+    <listitem>
+    <para>
+	The current PPP implementation is very basic, although sufficient
+	for most wan usages.
+    </para>
+    </listitem></varlistentry>
+
+    <varlistentry><term>Cisco HDLC Quirks</term>
+    <listitem>
+    <para>
+	Currently we do not end all packets with the correct Cisco multicast
+	or unicast flags. Nothing appears to mind too much but this should
+	be corrected.
+    </para>
+    </listitem></varlistentry>
+  </variablelist>
+
+  </para>
+  </chapter>
+
+  <chapter id="pubfunctions">
+     <title>Public Functions Provided</title>
+!Edrivers/net/wan/syncppp.c
+  </chapter>
+
+</book>
diff --git a/trunk/Documentation/RCU/00-INDEX b/trunk/Documentation/RCU/00-INDEX
@@ -16,8 +16,6 @@ RTFP.txt
 	- List of RCU papers (bibliography) going back to 1980.
 torture.txt
 	- RCU Torture Test Operation (CONFIG_RCU_TORTURE_TEST)
-trace.txt
-	- CONFIG_RCU_TRACE debugfs files and formats
 UP.txt
 	- RCU on Uniprocessor Systems
 whatisRCU.txt

diff --git a/trunk/Documentation/RCU/rculist_nulls.txt b/trunk/Documentation/RCU/rculist_nulls.txt