---

yaml --- r: 260819 b: refs/heads/master c: 333c066 h: refs/heads/master i: 260817: 7d44c0c 260815: 7604fa2 v: v3
git-mirror · Jul 27, 2011 · a73b199 · a73b199
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diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 19237039919088781b4191a00bdc1284d8fea1dd
+refs/heads/master: 333c066bb76f1f270ca77f16afe198e54e352c83
diff --git a/trunk/Documentation/DMA-API-HOWTO.txt b/trunk/Documentation/DMA-API-HOWTO.txt
@@ -613,13 +613,13 @@ to use the dma_sync_*() interfaces.
 				pass_to_upper_layers(cp->rx_buf);
 				make_and_setup_new_rx_buf(cp);
 			} else {
-				/* Just sync the buffer and give it back
-				 * to the card.
+				/* CPU should not write to
+				 * DMA_FROM_DEVICE-mapped area,
+				 * so dma_sync_single_for_device() is
+				 * not needed here. It would be required
+				 * for DMA_BIDIRECTIONAL mapping if
+				 * the memory was modified.
 				 */
-				dma_sync_single_for_device(&cp->dev,
-							   cp->rx_dma,
-							   cp->rx_len,
-							   DMA_FROM_DEVICE);
 				give_rx_buf_to_card(cp);
 			}
 		}

diff --git a/trunk/Documentation/cgroups/memory.txt b/trunk/Documentation/cgroups/memory.txt
@@ -380,7 +380,7 @@ will be charged as a new owner of it.
 
 5.2 stat file
 
-memory.stat file includes following statistics
+5.2.1 memory.stat file includes following statistics
 
 # per-memory cgroup local status
 cache		- # of bytes of page cache memory.
@@ -438,6 +438,89 @@ Note:
 	 file_mapped is accounted only when the memory cgroup is owner of page
 	 cache.)
 
+5.2.2 memory.vmscan_stat
+
+memory.vmscan_stat includes statistics information for memory scanning and
+freeing, reclaiming. The statistics shows memory scanning information since
+memory cgroup creation and can be reset to 0 by writing 0 as
+
+ #echo 0 > ../memory.vmscan_stat
+
+This file contains following statistics.
+
+[param]_[file_or_anon]_pages_by_[reason]_[under_heararchy]
+[param]_elapsed_ns_by_[reason]_[under_hierarchy]
+
+For example,
+
+  scanned_file_pages_by_limit indicates the number of scanned
+  file pages at vmscan.
+
+Now, 3 parameters are supported
+
+  scanned - the number of pages scanned by vmscan
+  rotated - the number of pages activated at vmscan
+  freed   - the number of pages freed by vmscan
+
+If "rotated" is high against scanned/freed, the memcg seems busy.
+
+Now, 2 reason are supported
+
+  limit - the memory cgroup's limit
+  system - global memory pressure + softlimit
+           (global memory pressure not under softlimit is not handled now)
+
+When under_hierarchy is added in the tail, the number indicates the
+total memcg scan of its children and itself.
+
+elapsed_ns is a elapsed time in nanosecond. This may include sleep time
+and not indicates CPU usage. So, please take this as just showing
+latency.
+
+Here is an example.
+
+# cat /cgroup/memory/A/memory.vmscan_stat
+scanned_pages_by_limit 9471864
+scanned_anon_pages_by_limit 6640629
+scanned_file_pages_by_limit 2831235
+rotated_pages_by_limit 4243974
+rotated_anon_pages_by_limit 3971968
+rotated_file_pages_by_limit 272006
+freed_pages_by_limit 2318492
+freed_anon_pages_by_limit 962052
+freed_file_pages_by_limit 1356440
+elapsed_ns_by_limit 351386416101
+scanned_pages_by_system 0
+scanned_anon_pages_by_system 0
+scanned_file_pages_by_system 0
+rotated_pages_by_system 0
+rotated_anon_pages_by_system 0
+rotated_file_pages_by_system 0
+freed_pages_by_system 0
+freed_anon_pages_by_system 0
+freed_file_pages_by_system 0
+elapsed_ns_by_system 0
+scanned_pages_by_limit_under_hierarchy 9471864
+scanned_anon_pages_by_limit_under_hierarchy 6640629
+scanned_file_pages_by_limit_under_hierarchy 2831235
+rotated_pages_by_limit_under_hierarchy 4243974
+rotated_anon_pages_by_limit_under_hierarchy 3971968
+rotated_file_pages_by_limit_under_hierarchy 272006
+freed_pages_by_limit_under_hierarchy 2318492
+freed_anon_pages_by_limit_under_hierarchy 962052
+freed_file_pages_by_limit_under_hierarchy 1356440
+elapsed_ns_by_limit_under_hierarchy 351386416101
+scanned_pages_by_system_under_hierarchy 0
+scanned_anon_pages_by_system_under_hierarchy 0
+scanned_file_pages_by_system_under_hierarchy 0
+rotated_pages_by_system_under_hierarchy 0
+rotated_anon_pages_by_system_under_hierarchy 0
+rotated_file_pages_by_system_under_hierarchy 0
+freed_pages_by_system_under_hierarchy 0
+freed_anon_pages_by_system_under_hierarchy 0
+freed_file_pages_by_system_under_hierarchy 0
+elapsed_ns_by_system_under_hierarchy 0
+
 5.3 swappiness
 
 Similar to /proc/sys/vm/swappiness, but affecting a hierarchy of groups only.

diff --git a/trunk/Documentation/devicetree/bindings/arm/sirf.txt b/trunk/Documentation/devicetree/bindings/arm/sirf.txt
@@ -0,0 +1,3 @@
+prima2 "cb" evalutation board
+Required root node properties:
+    - compatible = "sirf,prima2-cb", "sirf,prima2";
diff --git a/trunk/Documentation/devicetree/bindings/arm/xilinx.txt b/trunk/Documentation/devicetree/bindings/arm/xilinx.txt
@@ -0,0 +1,7 @@
+Xilinx Zynq EP107 Emulation Platform board
+
+This board is an emulation platform for the Zynq product which is
+based on an ARM Cortex A9 processor.
+
+Required root node properties:
+    - compatible = "xlnx,zynq-ep107";
diff --git a/trunk/Documentation/devicetree/bindings/gpio/gpio_keys.txt b/trunk/Documentation/devicetree/bindings/gpio/gpio_keys.txt
@@ -0,0 +1,36 @@
+Device-Tree bindings for input/gpio_keys.c keyboard driver
+
+Required properties:
+	- compatible = "gpio-keys";
+
+Optional properties:
+	- autorepeat: Boolean, Enable auto repeat feature of Linux input
+	  subsystem.
+
+Each button (key) is represented as a sub-node of "gpio-keys":
+Subnode properties:
+
+	- gpios: OF devcie-tree gpio specificatin.
+	- label: Descriptive name of the key.
+	- linux,code: Keycode to emit.
+
+Optional subnode-properties:
+	- linux,input-type: Specify event type this button/key generates.
+	  If not specified defaults to <1> == EV_KEY.
+	- debounce-interval: Debouncing interval time in milliseconds.
+	  If not specified defaults to 5.
+	- gpio-key,wakeup: Boolean, button can wake-up the system.
+
+Example nodes:
+
+	gpio_keys {
+			compatible = "gpio-keys";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			autorepeat;
+			button@21 {
+				label = "GPIO Key UP";
+				linux,code = <103>;
+				gpios = <&gpio1 0 1>;
+			};
+			...
diff --git a/trunk/Documentation/devicetree/bindings/rtc/olpc-xo1-rtc.txt b/trunk/Documentation/devicetree/bindings/rtc/olpc-xo1-rtc.txt
@@ -0,0 +1,5 @@
+OLPC XO-1 RTC
+~~~~~~~~~~~~~
+
+Required properties:
+ - compatible : "olpc,xo1-rtc"
diff --git a/trunk/Documentation/fb/modedb.txt b/trunk/Documentation/fb/modedb.txt
@@ -20,7 +20,7 @@ in a video= option, fbmem considers that to be a global video mode option.
 
 Valid mode specifiers (mode_option argument):
 
-    <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m]
+    <xres>x<yres>[M][R][-<bpp>][@<refresh>][i][m][eDd]
     <name>[-<bpp>][@<refresh>]
 
 with <xres>, <yres>, <bpp> and <refresh> decimal numbers and <name> a string.
@@ -36,6 +36,21 @@ pixels and 1.8% of yres).
 
        Sample usage: 1024x768M@60m - CVT timing with margins
 
+DRM drivers also add options to enable or disable outputs:
+
+'e' will force the display to be enabled, i.e. it will override the detection
+if a display is connected. 'D' will force the display to be enabled and use
+digital output. This is useful for outputs that have both analog and digital
+signals (e.g. HDMI and DVI-I). For other outputs it behaves like 'e'. If 'd'
+is specified the output is disabled.
+
+You can additionally specify which output the options matches to.
+To force the VGA output to be enabled and drive a specific mode say:
+    video=VGA-1:1280x1024@60me
+
+Specifying the option multiple times for different ports is possible, e.g.:
+    video=LVDS-1:d video=HDMI-1:D
+
 ***** oOo ***** oOo ***** oOo ***** oOo ***** oOo ***** oOo ***** oOo *****
 
 What is the VESA(TM) Coordinated Video Timings (CVT)?
@@ -132,5 +147,5 @@ There may be more modes.
     tridentfb	- Trident (Cyber)blade chipset frame buffer
     vt8623fb	- VIA 8623 frame buffer
 
-BTW, only a few drivers use this at the moment. Others are to follow
-(feel free to send patches).
+BTW, only a few fb drivers use this at the moment. Others are to follow
+(feel free to send patches). The DRM drivers also support this.
diff --git a/trunk/Documentation/feature-removal-schedule.txt b/trunk/Documentation/feature-removal-schedule.txt
@@ -460,13 +460,6 @@ Who:	FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
 
 ----------------------------
 
-What: 	DMA_xxBIT_MASK macros
-When:	Jun 2011
-Why:	DMA_xxBIT_MASK macros were replaced with DMA_BIT_MASK() macros.
-Who:	FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
-
-----------------------------
-
 What:	iwlwifi disable_hw_scan module parameters
 When:	3.0
 Why:	Hareware scan is the prefer method for iwlwifi devices for

diff --git a/trunk/Documentation/filesystems/ext3.txt b/trunk/Documentation/filesystems/ext3.txt
@@ -147,15 +147,6 @@ grpjquota=<file>	during journal replay. They replace the above
 			package for more details
 			(http://sourceforge.net/projects/linuxquota).
 
-bh		(*)	ext3 associates buffer heads to data pages to
-nobh			(a) cache disk block mapping information
-			(b) link pages into transaction to provide
-			    ordering guarantees.
-			"bh" option forces use of buffer heads.
-			"nobh" option tries to avoid associating buffer
-			heads (supported only for "writeback" mode).
-
-
 Specification
 =============
 Ext3 shares all disk implementation with the ext2 filesystem, and adds
@@ -227,5 +218,5 @@ kernel source:	<file:fs/ext3/>
 programs: 	http://e2fsprogs.sourceforge.net/
 		http://ext2resize.sourceforge.net
 
-useful links:	http://www.ibm.com/developerworks/library/l-fs7.html
-		http://www.ibm.com/developerworks/library/l-fs8.html
+useful links:	http://www.ibm.com/developerworks/library/l-fs7/index.html
+        http://www.ibm.com/developerworks/library/l-fs8/index.html
diff --git a/trunk/Documentation/filesystems/ext4.txt b/trunk/Documentation/filesystems/ext4.txt
@@ -68,12 +68,12 @@ Note: More extensive information for getting started with ext4 can be
     '-o barriers=[0|1]' mount option for both ext3 and ext4 filesystems
     for a fair comparison.  When tuning ext3 for best benchmark numbers,
     it is often worthwhile to try changing the data journaling mode; '-o
-    data=writeback,nobh' can be faster for some workloads.  (Note
-    however that running mounted with data=writeback can potentially
-    leave stale data exposed in recently written files in case of an
-    unclean shutdown, which could be a security exposure in some
-    situations.)  Configuring the filesystem with a large journal can
-    also be helpful for metadata-intensive workloads.
+    data=writeback' can be faster for some workloads.  (Note however that
+    running mounted with data=writeback can potentially leave stale data
+    exposed in recently written files in case of an unclean shutdown,
+    which could be a security exposure in some situations.)  Configuring
+    the filesystem with a large journal can also be helpful for
+    metadata-intensive workloads.
 
 2. Features
 ===========
@@ -272,14 +272,6 @@ grpjquota=<file>	during journal replay. They replace the above
 			package for more details
 			(http://sourceforge.net/projects/linuxquota).
 
-bh		(*)	ext4 associates buffer heads to data pages to
-nobh			(a) cache disk block mapping information
-			(b) link pages into transaction to provide
-			    ordering guarantees.
-			"bh" option forces use of buffer heads.
-			"nobh" option tries to avoid associating buffer
-			heads (supported only for "writeback" mode).
-
 stripe=n		Number of filesystem blocks that mballoc will try
 			to use for allocation size and alignment. For RAID5/6
 			systems this should be the number of data
@@ -393,8 +385,7 @@ dioread_nolock		locking. If the dioread_nolock option is specified
 			write and convert the extent to initialized after IO
 			completes. This approach allows ext4 code to avoid
 			using inode mutex, which improves scalability on high
-			speed storages. However this does not work with nobh
-			option and the mount will fail. Nor does it work with
+			speed storages. However this does not work with
 			data journaling and dioread_nolock option will be
 			ignored with kernel warning. Note that dioread_nolock
 			code path is only used for extent-based files.

diff --git a/trunk/Documentation/filesystems/nfs/Exporting b/trunk/Documentation/filesystems/nfs/Exporting
@@ -92,7 +92,14 @@ For a filesystem to be exportable it must:
    1/ provide the filehandle fragment routines described below.
    2/ make sure that d_splice_alias is used rather than d_add
       when ->lookup finds an inode for a given parent and name.
-      Typically the ->lookup routine will end with a:
+
+      If inode is NULL, d_splice_alias(inode, dentry) is eqivalent to
+
+		d_add(dentry, inode), NULL
+
+      Similarly, d_splice_alias(ERR_PTR(err), dentry) = ERR_PTR(err)
+
+      Typically the ->lookup routine will simply end with a:
 
 		return d_splice_alias(inode, dentry);
 	}

diff --git a/trunk/Documentation/kernel-parameters.txt b/trunk/Documentation/kernel-parameters.txt
@@ -1846,7 +1846,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 			See Documentation/sound/oss/oss-parameters.txt
 
 	panic=		[KNL] Kernel behaviour on panic: delay <timeout>
-			seconds before rebooting
+			timeout > 0: seconds before rebooting
+			timeout = 0: wait forever
+			timeout < 0: reboot immediately
 			Format: <timeout>
 
 	parkbd.port=	[HW] Parallel port number the keyboard adapter is

diff --git a/trunk/Documentation/sysctl/kernel.txt b/trunk/Documentation/sysctl/kernel.txt
@@ -61,6 +61,7 @@ show up in /proc/sys/kernel:
 - rtsig-nr
 - sem
 - sg-big-buff                 [ generic SCSI device (sg) ]
+- shm_rmid_forced
 - shmall
 - shmmax                      [ sysv ipc ]
 - shmmni
@@ -518,6 +519,27 @@ kernel.  This value defaults to SHMMAX.
 
 ==============================================================
 
+shm_rmid_forced:
+
+Linux lets you set resource limits, including how much memory one
+process can consume, via setrlimit(2).  Unfortunately, shared memory
+segments are allowed to exist without association with any process, and
+thus might not be counted against any resource limits.  If enabled,
+shared memory segments are automatically destroyed when their attach
+count becomes zero after a detach or a process termination.  It will
+also destroy segments that were created, but never attached to, on exit
+from the process.  The only use left for IPC_RMID is to immediately
+destroy an unattached segment.  Of course, this breaks the way things are
+defined, so some applications might stop working.  Note that this
+feature will do you no good unless you also configure your resource
+limits (in particular, RLIMIT_AS and RLIMIT_NPROC).  Most systems don't
+need this.
+
+Note that if you change this from 0 to 1, already created segments
+without users and with a dead originative process will be destroyed.
+
+==============================================================
+
 softlockup_thresh:
 
 This value can be used to lower the softlockup tolerance threshold.  The

diff --git a/trunk/MAINTAINERS b/trunk/MAINTAINERS
@@ -734,6 +734,12 @@ T:	git git://git.berlios.de/gemini-board
 S:	Maintained
 F:	arch/arm/mach-gemini/
 
+ARM/CSR SIRFPRIMA2 MACHINE SUPPORT
+M:	Barry Song <baohua.song@csr.com>
+L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
+S:	Maintained
+F:	arch/arm/mach-prima2/
+
 ARM/EBSA110 MACHINE SUPPORT
 M:	Russell King <linux@arm.linux.org.uk>
 L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
@@ -4217,9 +4223,10 @@ F:	drivers/usb/image/microtek.*
 
 MIPS
 M:	Ralf Baechle <ralf@linux-mips.org>
-W:	http://www.linux-mips.org/
 L:	linux-mips@linux-mips.org
+W:	http://www.linux-mips.org/
 T:	git git://git.linux-mips.org/pub/scm/linux.git
+Q:	http://patchwork.linux-mips.org/project/linux-mips/list/
 S:	Supported
 F:	Documentation/mips/
 F:	arch/mips/