4 files changed, 143 insertions, 2 deletions

diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index 6a451f47d40f..c3b1430cf603 100644
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -304,3 +304,15 @@ Why:	The code says it was obsolete when it was written in 2001.
 Who:    Richard Purdie <rpurdie@rpsys.net>
 
 ---------------------------
+
+What:   Wireless extensions over netlink (CONFIG_NET_WIRELESS_RTNETLINK)
+When:   with the merge of wireless-dev, 2.6.22 or later
+Why:    The option/code is
+         * not enabled on most kernels
+         * not required by any userspace tools (except an experimental one,
+           and even there only for some parts, others use ioctl)
+         * pointless since wext is no longer evolving and the ioctl
+           interface needs to be kept
+Who:    Johannes Berg <johannes@sipsolutions.net>
+
+---------------------------
diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt
index 72af5de1effb..5484ab5efd4f 100644
--- a/Documentation/filesystems/proc.txt
+++ b/Documentation/filesystems/proc.txt
@@ -41,6 +41,7 @@ Table of Contents
   2.11  /proc/sys/fs/mqueue - POSIX message queues filesystem
   2.12  /proc/<pid>/oom_adj - Adjust the oom-killer score
   2.13  /proc/<pid>/oom_score - Display current oom-killer score
+  2.14  /proc/<pid>/io - Display the IO accounting fields
 
 ------------------------------------------------------------------------------
 Preface
@@ -1990,3 +1991,107 @@ need to  recompile  the kernel, or even to reboot the system. The files in the
 command to write value into these files, thereby changing the default settings
 of the kernel.
 ------------------------------------------------------------------------------
+
+2.14  /proc/<pid>/io - Display the IO accounting fields
+-------------------------------------------------------
+
+This file contains IO statistics for each running process
+
+Example
+-------
+
+test:/tmp # dd if=/dev/zero of=/tmp/test.dat &
+[1] 3828
+
+test:/tmp # cat /proc/3828/io
+rchar: 323934931
+wchar: 323929600
+syscr: 632687
+syscw: 632675
+read_bytes: 0
+write_bytes: 323932160
+cancelled_write_bytes: 0
+
+
+Description
+-----------
+
+rchar
+-----
+
+I/O counter: chars read
+The number of bytes which this task has caused to be read from storage. This
+is simply the sum of bytes which this process passed to read() and pread().
+It includes things like tty IO and it is unaffected by whether or not actual
+physical disk IO was required (the read might have been satisfied from
+pagecache)
+
+
+wchar
+-----
+
+I/O counter: chars written
+The number of bytes which this task has caused, or shall cause to be written
+to disk. Similar caveats apply here as with rchar.
+
+
+syscr
+-----
+
+I/O counter: read syscalls
+Attempt to count the number of read I/O operations, i.e. syscalls like read()
+and pread().
+
+
+syscw
+-----
+
+I/O counter: write syscalls
+Attempt to count the number of write I/O operations, i.e. syscalls like
+write() and pwrite().
+
+
+read_bytes
+----------
+
+I/O counter: bytes read
+Attempt to count the number of bytes which this process really did cause to
+be fetched from the storage layer. Done at the submit_bio() level, so it is
+accurate for block-backed filesystems. <please add status regarding NFS and
+CIFS at a later time>
+
+
+write_bytes
+-----------
+
+I/O counter: bytes written
+Attempt to count the number of bytes which this process caused to be sent to
+the storage layer. This is done at page-dirtying time.
+
+
+cancelled_write_bytes
+---------------------
+
+The big inaccuracy here is truncate. If a process writes 1MB to a file and
+then deletes the file, it will in fact perform no writeout. But it will have
+been accounted as having caused 1MB of write.
+In other words: The number of bytes which this process caused to not happen,
+by truncating pagecache. A task can cause "negative" IO too. If this task
+truncates some dirty pagecache, some IO which another task has been accounted
+for (in it's write_bytes) will not be happening. We _could_ just subtract that
+from the truncating task's write_bytes, but there is information loss in doing
+that.
+
+
+Note
+----
+
+At its current implementation state, this is a bit racy on 32-bit machines: if
+process A reads process B's /proc/pid/io while process B is updating one of
+those 64-bit counters, process A could see an intermediate result.
+
+
+More information about this can be found within the taskstats documentation in
+Documentation/accounting.
+
+------------------------------------------------------------------------------
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 757dd994b879..914119309ddb 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1686,6 +1686,22 @@ and is between 256 and 4096 characters. It is defined in the file
         stifb=          [HW]
                         Format: bpp:<bpp1>[:<bpp2>[:<bpp3>...]]
 
+        sunrpc.pool_mode=
+                        [NFS]
+                        Control how the NFS server code allocates CPUs to
+                        service thread pools.  Depending on how many NICs
+                        you have and where their interrupts are bound, this
+                        option will affect which CPUs will do NFS serving.
+                        Note: this parameter cannot be changed while the
+                        NFS server is running.
+
+                        auto        the server chooses an appropriate mode
+                                    automatically using heuristics
+                        global      a single global pool contains all CPUs
+                        percpu      one pool for each CPU
+                        pernode     one pool for each NUMA node (equivalent
+                                    to global on non-NUMA machines)
+
         swiotlb=        [IA-64] Number of I/O TLB slabs
 
         switches=       [HW,M68k]
diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index c30ff1bb2d10..db398a6441c1 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -370,7 +370,9 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
     mpu_port    - 0x300,0x310,0x320,0x330 = legacy port,
                   1 = integrated PCI port,
                   0 = disable (default)
-    fm_port     - 0x388 (default), 0 = disable (default)
+    fm_port     - 0x388 = legacy port,
+                  1 = integrated PCI port (default),
+                  0 = disable
     soft_ac3    - Software-conversion of raw SPDIF packets (model 033 only)
                   (default = 1)
     joystick_port - Joystick port address (0 = disable, 1 = auto-detect)
@@ -895,10 +897,16 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed.
                         can be adjusted.  Appearing only when compiled with
                         $CONFIG_SND_DEBUG=y
 
-        STAC9200/9205/9220/9221/9254
+        STAC9200/9205/9254
+          ref           Reference board
+
+        STAC9220/9221
           ref           Reference board
           3stack        D945 3stack
           5stack        D945 5stack + SPDIF
+          macmini       Intel Mac Mini
+          macbook       Intel Mac Book
+          macbook-pro   Intel Mac Book Pro
 
         STAC9202/9250/9251
           ref           Reference board, base config