---

yaml
---
r: 326607
b: refs/heads/master
c: 61464c8
h: refs/heads/master
i:
  326605: 9096c2f
  326603: 3d6e5fe
  326599: 6aba804
  326591: 769cb0a
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9cf1c871526cf6bfec2a653e1e068ee72592542c
+refs/heads/master: 61464c8357c8f6b780e4c44f5c79471799c51ca7

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

@@ -220,3 +220,10 @@ Description:
 		If the device doesn't support LTM, the file will read "no".
 		The file will be present for all speeds of USB devices, and will
 		always read "no" for USB 1.1 and USB 2.0 devices.
+
+What:		/sys/bus/usb/devices/.../(hub interface)/portX
+Date:		August 2012
+Contact:	Lan Tianyu <tianyu.lan@intel.com>
+Description:
+		The /sys/bus/usb/devices/.../(hub interface)/portX
+		is usb port device's sysfs directory.

trunk/Documentation/ABI/testing/sysfs-class-extcon

@@ -13,7 +13,7 @@ Description:
 		accessory cables have such capability. For example,
 		the 30-pin port of Nuri board (/arch/arm/mach-exynos)
 		may have both HDMI and Charger attached, or analog audio,
-		video, and USB cables attached simulteneously.
+		video, and USB cables attached simultaneously.
 
 		If there are cables mutually exclusive with each other,
 		such binary relations may be expressed with extcon_dev's
@@ -35,7 +35,7 @@ Description:
 		The /sys/class/extcon/.../state shows and stores the cable
 		attach/detach information of the corresponding extcon object.
 		If the extcon object has an optional callback "show_state"
-		defined, the showing function is overriden with the optional
+		defined, the showing function is overridden with the optional
 		callback.
 
 		If the default callback for showing function is used, the
@@ -46,19 +46,19 @@ Description:
 		TA=1
 		EAR_JACK=0
 		#
-		In this example, the extcon device have USB_OTG and TA
+		In this example, the extcon device has USB_OTG and TA
 		cables attached and HDMI and EAR_JACK cables detached.
 
 		In order to update the state of an extcon device, enter a hex
-		state number starting with 0x.
-		 echo 0xHEX > state
+		state number starting with 0x:
+		# echo 0xHEX > state
 
-		This updates the whole state of the extcon dev.
+		This updates the whole state of the extcon device.
 		Inputs of all the methods are required to meet the
-		mutually_exclusive contidions if they exist.
+		mutually_exclusive conditions if they exist.
 
 		It is recommended to use this "global" state interface if
-		you need to enter the value atomically. The later state
+		you need to set the value atomically. The later state
 		interface associated with each cable cannot update
 		multiple cable states of an extcon device simultaneously.
 
@@ -73,7 +73,7 @@ What:		/sys/class/extcon/.../cable.x/state
 Date:		February 2012
 Contact:	MyungJoo Ham <myungjoo.ham@samsung.com>
 Description:
-		The /sys/class/extcon/.../cable.x/name shows and stores the
+		The /sys/class/extcon/.../cable.x/state shows and stores the
 		state of cable "x" (integer between 0 and 31) of an extcon
 		device. The state value is either 0 (detached) or 1
 		(attached).
@@ -83,8 +83,8 @@ Date:		December 2011
 Contact:	MyungJoo Ham <myungjoo.ham@samsung.com>
 Description:
 		Shows the relations of mutually exclusiveness. For example,
-		if the mutually_exclusive array of extcon_dev is
-		{0x3, 0x5, 0xC, 0x0}, the, the output is:
+		if the mutually_exclusive array of extcon device is
+		{0x3, 0x5, 0xC, 0x0}, then the output is:
 		# ls mutually_exclusive/
 		0x3
 		0x5

trunk/Documentation/ABI/testing/sysfs-class-regulator

@@ -349,3 +349,24 @@ Description:
 
 		This will be one of the same strings reported by
 		the "state" attribute.
+
+What:		/sys/class/regulator/.../bypass
+Date:		September 2012
+KernelVersion:	3.7
+Contact:	Mark Brown <broonie@opensource.wolfsonmicro.com>
+Description:
+		Some regulator directories will contain a field called
+		bypass.  This indicates if the device is in bypass mode.
+
+		This will be one of the following strings:
+
+		'enabled'
+		'disabled'
+		'unknown'
+
+		'enabled' means the regulator is in bypass mode.
+
+		'disabled' means that the regulator is regulating.
+
+		'unknown' means software cannot determine the state, or
+		the reported state is invalid.

trunk/Documentation/ABI/testing/sysfs-driver-wacom

@@ -1,3 +1,16 @@
+WWhat:		/sys/class/hidraw/hidraw*/device/oled*_img
+Date:		June 2012
+Contact:	linux-bluetooth@vger.kernel.org
+Description:
+		The /sys/class/hidraw/hidraw*/device/oled*_img files control
+		OLED mocro displays on Intuos4 Wireless tablet. Accepted image
+		has to contain 256 bytes (64x32 px 1 bit colour). The format
+		is the same as PBM image 62x32px without header (64 bits per
+		horizontal line, 32 lines). An example of setting OLED No. 0:
+		dd bs=256 count=1 if=img_file of=[path to oled0_img]/oled0_img
+		The attribute is read only and no local copy of the image is
+		stored.
+
 What:		/sys/class/hidraw/hidraw*/device/speed
 Date:		April 2010
 Kernel Version:	2.6.35

trunk/Documentation/RCU/checklist.txt

@@ -310,6 +310,12 @@ over a rather long period of time, but improvements are always welcome!
 	code under the influence of preempt_disable(), you instead
 	need to use synchronize_irq() or synchronize_sched().
 
+	This same limitation also applies to synchronize_rcu_bh()
+	and synchronize_srcu(), as well as to the asynchronous and
+	expedited forms of the three primitives, namely call_rcu(),
+	call_rcu_bh(), call_srcu(), synchronize_rcu_expedited(),
+	synchronize_rcu_bh_expedited(), and synchronize_srcu_expedited().
+
 12.	Any lock acquired by an RCU callback must be acquired elsewhere
 	with softirq disabled, e.g., via spin_lock_irqsave(),
 	spin_lock_bh(), etc.  Failing to disable irq on a given

trunk/Documentation/RCU/stallwarn.txt

@@ -99,7 +99,7 @@ In kernels with CONFIG_RCU_FAST_NO_HZ, even more information is
 printed:
 
 	INFO: rcu_preempt detected stall on CPU
-	0: (64628 ticks this GP) idle=dd5/3fffffffffffffff/0 drain=0 . timer=-1
+	0: (64628 ticks this GP) idle=dd5/3fffffffffffffff/0 drain=0 . timer not pending
 	   (t=65000 jiffies)
 
 The "(64628 ticks this GP)" indicates that this CPU has taken more
@@ -116,13 +116,13 @@ number between the two "/"s is the value of the nesting, which will
 be a small positive number if in the idle loop and a very large positive
 number (as shown above) otherwise.
 
-For CONFIG_RCU_FAST_NO_HZ kernels, the "drain=0" indicates that the
-CPU is not in the process of trying to force itself into dyntick-idle
-state, the "." indicates that the CPU has not given up forcing RCU
-into dyntick-idle mode (it would be "H" otherwise), and the "timer=-1"
-indicates that the CPU has not recented forced RCU into dyntick-idle
-mode (it would otherwise indicate the number of microseconds remaining
-in this forced state).
+For CONFIG_RCU_FAST_NO_HZ kernels, the "drain=0" indicates that the CPU is
+not in the process of trying to force itself into dyntick-idle state, the
+"." indicates that the CPU has not given up forcing RCU into dyntick-idle
+mode (it would be "H" otherwise), and the "timer not pending" indicates
+that the CPU has not recently forced RCU into dyntick-idle mode (it
+would otherwise indicate the number of microseconds remaining in this
+forced state).
 
 
 Multiple Warnings From One Stall

trunk/Documentation/RCU/trace.txt

@@ -333,23 +333,23 @@ o	Each element of the form "1/1 0:127 ^0" represents one struct
 The output of "cat rcu/rcu_pending" looks as follows:
 
 rcu_sched:
-  0 np=255892 qsp=53936 rpq=85 cbr=0 cng=14417 gpc=10033 gps=24320 nf=6445 nn=146741
-  1 np=261224 qsp=54638 rpq=33 cbr=0 cng=25723 gpc=16310 gps=2849 nf=5912 nn=155792
-  2 np=237496 qsp=49664 rpq=23 cbr=0 cng=2762 gpc=45478 gps=1762 nf=1201 nn=136629
-  3 np=236249 qsp=48766 rpq=98 cbr=0 cng=286 gpc=48049 gps=1218 nf=207 nn=137723
-  4 np=221310 qsp=46850 rpq=7 cbr=0 cng=26 gpc=43161 gps=4634 nf=3529 nn=123110
-  5 np=237332 qsp=48449 rpq=9 cbr=0 cng=54 gpc=47920 gps=3252 nf=201 nn=137456
-  6 np=219995 qsp=46718 rpq=12 cbr=0 cng=50 gpc=42098 gps=6093 nf=4202 nn=120834
-  7 np=249893 qsp=49390 rpq=42 cbr=0 cng=72 gpc=38400 gps=17102 nf=41 nn=144888
+  0 np=255892 qsp=53936 rpq=85 cbr=0 cng=14417 gpc=10033 gps=24320 nn=146741
+  1 np=261224 qsp=54638 rpq=33 cbr=0 cng=25723 gpc=16310 gps=2849 nn=155792
+  2 np=237496 qsp=49664 rpq=23 cbr=0 cng=2762 gpc=45478 gps=1762 nn=136629
+  3 np=236249 qsp=48766 rpq=98 cbr=0 cng=286 gpc=48049 gps=1218 nn=137723
+  4 np=221310 qsp=46850 rpq=7 cbr=0 cng=26 gpc=43161 gps=4634 nn=123110
+  5 np=237332 qsp=48449 rpq=9 cbr=0 cng=54 gpc=47920 gps=3252 nn=137456
+  6 np=219995 qsp=46718 rpq=12 cbr=0 cng=50 gpc=42098 gps=6093 nn=120834
+  7 np=249893 qsp=49390 rpq=42 cbr=0 cng=72 gpc=38400 gps=17102 nn=144888
 rcu_bh:
-  0 np=146741 qsp=1419 rpq=6 cbr=0 cng=6 gpc=0 gps=0 nf=2 nn=145314
-  1 np=155792 qsp=12597 rpq=3 cbr=0 cng=0 gpc=4 gps=8 nf=3 nn=143180
-  2 np=136629 qsp=18680 rpq=1 cbr=0 cng=0 gpc=7 gps=6 nf=0 nn=117936
-  3 np=137723 qsp=2843 rpq=0 cbr=0 cng=0 gpc=10 gps=7 nf=0 nn=134863
-  4 np=123110 qsp=12433 rpq=0 cbr=0 cng=0 gpc=4 gps=2 nf=0 nn=110671
-  5 np=137456 qsp=4210 rpq=1 cbr=0 cng=0 gpc=6 gps=5 nf=0 nn=133235
-  6 np=120834 qsp=9902 rpq=2 cbr=0 cng=0 gpc=6 gps=3 nf=2 nn=110921
-  7 np=144888 qsp=26336 rpq=0 cbr=0 cng=0 gpc=8 gps=2 nf=0 nn=118542
+  0 np=146741 qsp=1419 rpq=6 cbr=0 cng=6 gpc=0 gps=0 nn=145314
+  1 np=155792 qsp=12597 rpq=3 cbr=0 cng=0 gpc=4 gps=8 nn=143180
+  2 np=136629 qsp=18680 rpq=1 cbr=0 cng=0 gpc=7 gps=6 nn=117936
+  3 np=137723 qsp=2843 rpq=0 cbr=0 cng=0 gpc=10 gps=7 nn=134863
+  4 np=123110 qsp=12433 rpq=0 cbr=0 cng=0 gpc=4 gps=2 nn=110671
+  5 np=137456 qsp=4210 rpq=1 cbr=0 cng=0 gpc=6 gps=5 nn=133235
+  6 np=120834 qsp=9902 rpq=2 cbr=0 cng=0 gpc=6 gps=3 nn=110921
+  7 np=144888 qsp=26336 rpq=0 cbr=0 cng=0 gpc=8 gps=2 nn=118542
 
 As always, this is once again split into "rcu_sched" and "rcu_bh"
 portions, with CONFIG_TREE_PREEMPT_RCU kernels having an additional
@@ -377,17 +377,6 @@ o	"gpc" is the number of times that an old grace period had
 o	"gps" is the number of times that a new grace period had started,
 	but this CPU was not yet aware of it.
 
-o	"nf" is the number of times that this CPU suspected that the
-	current grace period had run for too long, and thus needed to
-	be forced.
-
-	Please note that "forcing" consists of sending resched IPIs
-	to holdout CPUs.  If that CPU really still is in an old RCU
-	read-side critical section, then we really do have to wait for it.
-	The assumption behing "forcing" is that the CPU is not still in
-	an old RCU read-side critical section, but has not yet responded
-	for some other reason.
-
 o	"nn" is the number of times that this CPU needed nothing.  Alert
 	readers will note that the rcu "nn" number for a given CPU very
 	closely matches the rcu_bh "np" number for that same CPU.  This

trunk/Documentation/RCU/whatisRCU.txt

@@ -873,7 +873,7 @@ d.	Do you need to treat NMI handlers, hardirq handlers,
 	and code segments with preemption disabled (whether
 	via preempt_disable(), local_irq_save(), local_bh_disable(),
 	or some other mechanism) as if they were explicit RCU readers?
-	If so, you need RCU-sched.
+	If so, RCU-sched is the only choice that will work for you.
 
 e.	Do you need RCU grace periods to complete even in the face
 	of softirq monopolization of one or more of the CPUs?  For
@@ -884,7 +884,12 @@ f.	Is your workload too update-intensive for normal use of
 	RCU, but inappropriate for other synchronization mechanisms?
 	If so, consider SLAB_DESTROY_BY_RCU.  But please be careful!
 
-g.	Otherwise, use RCU.
+g.	Do you need read-side critical sections that are respected
+	even though they are in the middle of the idle loop, during
+	user-mode execution, or on an offlined CPU?  If so, SRCU is the
+	only choice that will work for you.
+
+h.	Otherwise, use RCU.
 
 Of course, this all assumes that you have determined that RCU is in fact
 the right tool for your job.

trunk/Documentation/accounting/getdelays.c

@@ -98,10 +98,9 @@ static int create_nl_socket(int protocol)
 	if (rcvbufsz)
 		if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF,
 				&rcvbufsz, sizeof(rcvbufsz)) < 0) {
-			fprintf(stderr, "Unable to set socket rcv buf size "
-					"to %d\n",
+			fprintf(stderr, "Unable to set socket rcv buf size to %d\n",
 				rcvbufsz);
-			return -1;
+			goto error;
 		}
 
 	memset(&local, 0, sizeof(local));