---

yaml
---
r: 91962
b: refs/heads/master
c: 8fa8279
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4a1fd556c1f1fbd6d9d6739efec042324732b697
+refs/heads/master: 8fa82790fb9dfe57aeafc8de6b6a5c1df63efa06

trunk/Documentation/00-INDEX

@@ -25,8 +25,6 @@ DMA-API.txt
 	- DMA API, pci_ API & extensions for non-consistent memory machines.
 DMA-ISA-LPC.txt
 	- How to do DMA with ISA (and LPC) devices.
-DMA-mapping.txt
-	- info for PCI drivers using DMA portably across all platforms.
 DocBook/
 	- directory with DocBook templates etc. for kernel documentation.
 HOWTO
@@ -43,8 +41,6 @@ ManagementStyle
 	- how to (attempt to) manage kernel hackers.
 MSI-HOWTO.txt
 	- the Message Signaled Interrupts (MSI) Driver Guide HOWTO and FAQ.
-PCIEBUS-HOWTO.txt
-	- a guide describing the PCI Express Port Bus driver.
 RCU/
 	- directory with info on RCU (read-copy update).
 README.DAC960
@@ -285,12 +281,6 @@ parport.txt
 	- how to use the parallel-port driver.
 parport-lowlevel.txt
 	- description and usage of the low level parallel port functions.
-pci-error-recovery.txt
-	- info on PCI error recovery.
-pci.txt
-	- info on the PCI subsystem for device driver authors.
-pcieaer-howto.txt
-	- the PCI Express Advanced Error Reporting Driver Guide HOWTO.
 pcmcia/
 	- info on the Linux PCMCIA driver.
 pi-futex.txt

trunk/Documentation/ABI/testing/sysfs-bus-pci

@@ -0,0 +1,11 @@
+What:		/sys/bus/pci/devices/.../vpd
+Date:		February 2008
+Contact:	Ben Hutchings <bhutchings@solarflare.com>
+Description:
+		A file named vpd in a device directory will be a
+		binary file containing the Vital Product Data for the
+		device.  It should follow the VPD format defined in
+		PCI Specification 2.1 or 2.2, but users should consider
+		that some devices may have malformatted data.  If the
+		underlying VPD has a writable section then the
+		corresponding section of this file will be writable.

trunk/Documentation/ABI/testing/sysfs-ibft

@@ -0,0 +1,23 @@
+What:		/sys/firmware/ibft/initiator
+Date:		November 2007
+Contact:	Konrad Rzeszutek <ketuzsezr@darnok.org>
+Description:	The /sys/firmware/ibft/initiator directory will contain
+		files that expose the iSCSI Boot Firmware Table initiator data.
+		Usually this contains the Initiator name.
+
+What:		/sys/firmware/ibft/targetX
+Date:		November 2007
+Contact:	Konrad Rzeszutek <ketuzsezr@darnok.org>
+Description:	The /sys/firmware/ibft/targetX directory will contain
+		files that expose the iSCSI Boot Firmware Table target data.
+		Usually this contains the target's IP address, boot LUN,
+		target name, and what NIC it is associated with. It can also
+		contain the CHAP name (and password), the reverse CHAP
+		name (and password)
+
+What:		/sys/firmware/ibft/ethernetX
+Date:		November 2007
+Contact:	Konrad Rzeszutek <ketuzsezr@darnok.org>
+Description:	The /sys/firmware/ibft/ethernetX directory will contain
+		files that expose the iSCSI Boot Firmware Table NIC data.
+		This can this can the IP address, MAC, and gateway of the NIC.

trunk/Documentation/DocBook/kernel-api.tmpl

@@ -297,11 +297,6 @@ X!Earch/x86/kernel/mca_32.c
 !Ikernel/acct.c
   </chapter>
 
-  <chapter id="pmfuncs">
-     <title>Power Management</title>
-!Ekernel/power/pm.c
-  </chapter>
-
   <chapter id="devdrivers">
      <title>Device drivers infrastructure</title>
      <sect1><title>Device Drivers Base</title>

trunk/Documentation/DocBook/kernel-locking.tmpl

@@ -241,7 +241,7 @@
    </para>
    <para>
      The third type is a semaphore
-     (<filename class="headerfile">include/asm/semaphore.h</filename>): it
+     (<filename class="headerfile">include/linux/semaphore.h</filename>): it
      can have more than one holder at any time (the number decided at
      initialization time), although it is most commonly used as a
      single-holder lock (a mutex).  If you can't get a semaphore, your
@@ -290,7 +290,7 @@
      <para>
        If you have a data structure which is only ever accessed from
        user context, then you can use a simple semaphore
-       (<filename>linux/asm/semaphore.h</filename>) to protect it.  This 
+       (<filename>linux/linux/semaphore.h</filename>) to protect it.  This
        is the most trivial case: you initialize the semaphore to the number 
        of resources available (usually 1), and call
        <function>down_interruptible()</function> to grab the semaphore, and 
@@ -854,7 +854,7 @@ The change is shown below, in standard patch format: the
  };
 
 -static DEFINE_MUTEX(cache_lock);
-+static spinlock_t cache_lock = SPIN_LOCK_UNLOCKED;
++static DEFINE_SPINLOCK(cache_lock);
  static LIST_HEAD(cache);
  static unsigned int cache_num = 0;
  #define MAX_CACHE_SIZE 10
@@ -1238,7 +1238,7 @@ Here is the "lock-per-object" implementation:
 -        int popularity;
  };
 
- static spinlock_t cache_lock = SPIN_LOCK_UNLOCKED;
+ static DEFINE_SPINLOCK(cache_lock);
 @@ -77,6 +84,7 @@
          obj-&gt;id = id;
          obj-&gt;popularity = 0;
@@ -1656,7 +1656,7 @@ the amount of locking which needs to be done.
  #include &lt;linux/slab.h&gt;
  #include &lt;linux/string.h&gt;
 +#include &lt;linux/rcupdate.h&gt;
- #include &lt;asm/semaphore.h&gt;
+ #include &lt;linux/semaphore.h&gt;
  #include &lt;asm/errno.h&gt;
 
  struct object

trunk/Documentation/DocBook/writing_usb_driver.tmpl

@@ -100,8 +100,8 @@
       useful documents, at the USB home page (see Resources). An excellent
       introduction to the Linux USB subsystem can be found at the USB Working
       Devices List (see Resources). It explains how the Linux USB subsystem is
-      structured and introduces the reader to the concept of USB urbs, which
-      are essential to USB drivers.
+      structured and introduces the reader to the concept of USB urbs
+      (USB Request Blocks), which are essential to USB drivers.
   </para>
   <para>
       The first thing a Linux USB driver needs to do is register itself with
@@ -162,8 +162,8 @@ static int __init usb_skel_init(void)
 module_init(usb_skel_init);
   </programlisting>
   <para>
-      When the driver is unloaded from the system, it needs to unregister
-      itself with the USB subsystem. This is done with the usb_unregister
+      When the driver is unloaded from the system, it needs to deregister
+      itself with the USB subsystem. This is done with the usb_deregister
       function:
   </para>
   <programlisting>
@@ -232,7 +232,7 @@ static int skel_probe(struct usb_interface *interface,
      were passed to the USB subsystem will be called from a user program trying
      to talk to the device. The first function called will be open, as the
      program tries to open the device for I/O. We increment our private usage
-     count and save off a pointer to our internal structure in the file
+     count and save a pointer to our internal structure in the file
      structure. This is done so that future calls to file operations will
      enable the driver to determine which device the user is addressing.  All
      of this is done with the following code:
@@ -252,8 +252,8 @@ file->private_data = dev;
      send to the device based on the size of the write urb it has created (this
      size depends on the size of the bulk out end point that the device has).
      Then it copies the data from user space to kernel space, points the urb to
-     the data and submits the urb to the USB subsystem.  This can be shown in
-     he following code:
+     the data and submits the urb to the USB subsystem.  This can be seen in
+     the following code:
   </para>
   <programlisting>
 /* we can only write as much as 1 urb will hold */

trunk/Documentation/PCI/00-INDEX

@@ -0,0 +1,12 @@
+00-INDEX
+	- this file
+PCI-DMA-mapping.txt
+	- info for PCI drivers using DMA portably across all platforms
+PCIEBUS-HOWTO.txt
+	- a guide describing the PCI Express Port Bus driver
+pci-error-recovery.txt
+	- info on PCI error recovery
+pci.txt
+	- info on the PCI subsystem for device driver authors
+pcieaer-howto.txt
+	- the PCI Express Advanced Error Reporting Driver Guide HOWTO

trunk/Documentation/PCIEBUS-HOWTO.txt → trunk/Documentation/PCI/PCIEBUS-HOWTO.txt

@@ -56,9 +56,9 @@ advantages of using the PCI Express Port Bus driver are listed below:
 
 	- Allow service drivers implemented in an independent
 	  staged approach.
-	
+
 	- Allow one service driver to run on multiple PCI-PCI Bridge
-	  Port devices. 
+	  Port devices.
 
 	- Manage and distribute resources of a PCI-PCI Bridge Port
 	  device to requested service drivers.
@@ -82,7 +82,7 @@ Model requires some minimal changes on existing service drivers that
 imposes no impact on the functionality of existing service drivers.
 
 A service driver is required to use the two APIs shown below to
-register its service with the PCI Express Port Bus driver (see 
+register its service with the PCI Express Port Bus driver (see
 section 5.2.1 & 5.2.2). It is important that a service driver
 initializes the pcie_port_service_driver data structure, included in
 header file /include/linux/pcieport_if.h, before calling these APIs.
@@ -137,7 +137,7 @@ driver.
 static int __init aerdrv_service_init(void)
 {
 	int retval = 0;
-	
+
 	retval = pcie_port_service_register(&root_aerdrv);
 	if (!retval) {
 		/*
@@ -147,7 +147,7 @@ static int __init aerdrv_service_init(void)
 	return retval;
 }
 
-static void __exit aerdrv_service_exit(void) 
+static void __exit aerdrv_service_exit(void)
 {
 	pcie_port_service_unregister(&root_aerdrv);
 }
@@ -175,7 +175,7 @@ same physical Root Port. Both service drivers call pci_enable_msi to
 request MSI based interrupts. A service driver may not know whether
 any other service drivers have run on this Root Port. If either one
 of them calls pci_disable_msi, it puts the other service driver
-in a wrong interrupt mode. 
+in a wrong interrupt mode.
 
 To avoid this situation all service drivers are not permitted to
 switch interrupt mode on its device. The PCI Express Port Bus driver

trunk/Documentation/pci.txt → trunk/Documentation/PCI/pci.txt

@@ -119,7 +119,7 @@ initialization with a pointer to a structure describing the driver
 			the power state of a device before reboot.
 			e.g. drivers/net/e100.c.
 
-	err_handler	See Documentation/pci-error-recovery.txt
+	err_handler	See Documentation/PCI/pci-error-recovery.txt
 
 
 The ID table is an array of struct pci_device_id entries ending with an

trunk/Documentation/pcieaer-howto.txt → trunk/Documentation/PCI/pcieaer-howto.txt

@@ -13,7 +13,7 @@ Reporting (AER) driver and provides information on how to use it, as
 well as how to enable the drivers of endpoint devices to conform with
 PCI Express AER driver.
 
-1.2 Copyright © Intel Corporation 2006.
+1.2 Copyright © Intel Corporation 2006.
 
 1.3 What is the PCI Express AER Driver?
 

trunk/Documentation/SubmittingPatches

@@ -183,7 +183,7 @@ Even if the maintainer did not respond in step #4, make sure to ALWAYS
 copy the maintainer when you change their code.
 
 For small patches you may want to CC the Trivial Patch Monkey
-trivial@kernel.org managed by Adrian Bunk; which collects "trivial"
+trivial@kernel.org managed by Jesper Juhl; which collects "trivial"
 patches. Trivial patches must qualify for one of the following rules:
  Spelling fixes in documentation
  Spelling fixes which could break grep(1)
@@ -196,7 +196,7 @@ patches. Trivial patches must qualify for one of the following rules:
  since people copy, as long as it's trivial)
  Any fix by the author/maintainer of the file (ie. patch monkey
  in re-transmission mode)
-URL: <http://www.kernel.org/pub/linux/kernel/people/bunk/trivial/>
+URL: <http://www.kernel.org/pub/linux/kernel/people/juhl/trivial/>
 
 
 

trunk/Documentation/block/biodoc.txt

@@ -1097,7 +1097,7 @@ lock themselves, if required. Drivers that explicitly used the
 io_request_lock for serialization need to be modified accordingly.
 Usually it's as easy as adding a global lock:
 
-	static spinlock_t my_driver_lock = SPIN_LOCK_UNLOCKED;
+	static DEFINE_SPINLOCK(my_driver_lock);
 
 and passing the address to that lock to blk_init_queue().
 

trunk/Documentation/cdrom/cdrom-standard.tex

@@ -777,7 +777,7 @@ \subsection{$Int\ register_cdrom( struct\ cdrom_device_info\ * cdi)$}
 it may have as many structures $<device>_info$ as there are minor devices
 active. $Register_cdrom()$ builds a linked list from these. 
 
-\subsection{$Int\ unregister_cdrom(struct\ cdrom_device_info * cdi)$}
+\subsection{$Void\ unregister_cdrom(struct\ cdrom_device_info * cdi)$}
 
 Unregistering device $cdi$ with minor number $MINOR(cdi\to dev)$ removes
 the minor device from the list. If it was the last registered minor for

trunk/Documentation/cli-sti-removal.txt

@@ -43,7 +43,7 @@ would execute while the cli()-ed section is executing.
 
 but from now on a more direct method of locking has to be used:
 
-	spinlock_t driver_lock = SPIN_LOCK_UNLOCKED;
+	DEFINE_SPINLOCK(driver_lock);
 	struct driver_data;
 
 	irq_handler (...)

trunk/Documentation/cpusets.txt

@@ -8,6 +8,7 @@ Portions Copyright (c) 2004-2006 Silicon Graphics, Inc.
 Modified by Paul Jackson <pj@sgi.com>
 Modified by Christoph Lameter <clameter@sgi.com>
 Modified by Paul Menage <menage@google.com>
+Modified by Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
 
 CONTENTS:
 =========
@@ -20,7 +21,8 @@ CONTENTS:
   1.5 What is memory_pressure ?
   1.6 What is memory spread ?
   1.7 What is sched_load_balance ?
-  1.8 How do I use cpusets ?
+  1.8 What is sched_relax_domain_level ?
+  1.9 How do I use cpusets ?
 2. Usage Examples and Syntax
   2.1 Basic Usage
   2.2 Adding/removing cpus
@@ -497,7 +499,73 @@ the cpuset code to update these sched domains, it compares the new
 partition requested with the current, and updates its sched domains,
 removing the old and adding the new, for each change.
 
-1.8 How do I use cpusets ?
+
+1.8 What is sched_relax_domain_level ?
+--------------------------------------
+
+In sched domain, the scheduler migrates tasks in 2 ways; periodic load
+balance on tick, and at time of some schedule events.
+
+When a task is woken up, scheduler try to move the task on idle CPU.
+For example, if a task A running on CPU X activates another task B
+on the same CPU X, and if CPU Y is X's sibling and performing idle,
+then scheduler migrate task B to CPU Y so that task B can start on
+CPU Y without waiting task A on CPU X.
+
+And if a CPU run out of tasks in its runqueue, the CPU try to pull
+extra tasks from other busy CPUs to help them before it is going to
+be idle.
+
+Of course it takes some searching cost to find movable tasks and/or
+idle CPUs, the scheduler might not search all CPUs in the domain
+everytime.  In fact, in some architectures, the searching ranges on
+events are limited in the same socket or node where the CPU locates,
+while the load balance on tick searchs all.
+
+For example, assume CPU Z is relatively far from CPU X.  Even if CPU Z
+is idle while CPU X and the siblings are busy, scheduler can't migrate
+woken task B from X to Z since it is out of its searching range.
+As the result, task B on CPU X need to wait task A or wait load balance
+on the next tick.  For some applications in special situation, waiting
+1 tick may be too long.
+
+The 'sched_relax_domain_level' file allows you to request changing
+this searching range as you like.  This file takes int value which
+indicates size of searching range in levels ideally as follows,
+otherwise initial value -1 that indicates the cpuset has no request.
+
+  -1  : no request. use system default or follow request of others.
+   0  : no search.
+   1  : search siblings (hyperthreads in a core).
+   2  : search cores in a package.
+   3  : search cpus in a node [= system wide on non-NUMA system]
+ ( 4  : search nodes in a chunk of node [on NUMA system] )
+ ( 5~ : search system wide [on NUMA system])
+
+This file is per-cpuset and affect the sched domain where the cpuset
+belongs to.  Therefore if the flag 'sched_load_balance' of a cpuset
+is disabled, then 'sched_relax_domain_level' have no effect since
+there is no sched domain belonging the cpuset.
+
+If multiple cpusets are overlapping and hence they form a single sched
+domain, the largest value among those is used.  Be careful, if one
+requests 0 and others are -1 then 0 is used.
+
+Note that modifying this file will have both good and bad effects,
+and whether it is acceptable or not will be depend on your situation.
+Don't modify this file if you are not sure.
+
+If your situation is:
+ - The migration costs between each cpu can be assumed considerably
+   small(for you) due to your special application's behavior or
+   special hardware support for CPU cache etc.
+ - The searching cost doesn't have impact(for you) or you can make
+   the searching cost enough small by managing cpuset to compact etc.
+ - The latency is required even it sacrifices cache hit rate etc.
+then increasing 'sched_relax_domain_level' would benefit you.
+
+
+1.9 How do I use cpusets ?
 --------------------------
 
 In order to minimize the impact of cpusets on critical kernel

trunk/Documentation/dontdiff

@@ -47,7 +47,6 @@
 .mm
 53c700_d.h
 53c8xx_d.h*
-BitKeeper
 COPYING
 CREDITS
 CVS