Merge branch 'perf/urgent' into perf/core, to pick up fixed and resolve conflicts

 Conflicts:
	kernel/events/core.c

Signed-off-by: Ingo Molnar <[email protected]>

Author: Ingo Molnar

.mailmap

@@ -158,6 +158,8 @@ Valdis Kletnieks <[email protected]>
 Viresh Kumar <[email protected]> <[email protected]>
 Viresh Kumar <[email protected]> <[email protected]>
 Viresh Kumar <[email protected]> <[email protected]>
+Vladimir Davydov <[email protected]> <[email protected]>
+Vladimir Davydov <[email protected]> <[email protected]>
 Takashi YOSHII <[email protected]>
 Yusuke Goda <[email protected]>
 Gustavo Padovan <[email protected]>

Documentation/ABI/stable/sysfs-devices

@@ -1,7 +1,7 @@
 # Note: This documents additional properties of any device beyond what
 # is documented in Documentation/sysfs-rules.txt
 
-What:		/sys/devices/*/of_path
+What:		/sys/devices/*/of_node
 Date:		February 2015
 Contact:	Device Tree mailing list <[email protected]>
 Description:

Documentation/PCI/MSI-HOWTO.txt

@@ -94,14 +94,11 @@ has a requirements for a minimum number of vectors the driver can pass a
 min_vecs argument set to this limit, and the PCI core will return -ENOSPC
 if it can't meet the minimum number of vectors.
 
-The flags argument should normally be set to 0, but can be used to pass the
-PCI_IRQ_NOMSI and PCI_IRQ_NOMSIX flag in case a device claims to support
-MSI or MSI-X, but the support is broken, or to pass PCI_IRQ_NOLEGACY in
-case the device does not support legacy interrupt lines.
-
-By default this function will spread the interrupts around the available
-CPUs, but this feature can be disabled by passing the PCI_IRQ_NOAFFINITY
-flag.
+The flags argument is used to specify which type of interrupt can be used
+by the device and the driver (PCI_IRQ_LEGACY, PCI_IRQ_MSI, PCI_IRQ_MSIX).
+A convenient short-hand (PCI_IRQ_ALL_TYPES) is also available to ask for
+any possible kind of interrupt.  If the PCI_IRQ_AFFINITY flag is set,
+pci_alloc_irq_vectors() will spread the interrupts around the available CPUs.
 
 To get the Linux IRQ numbers passed to request_irq() and free_irq() and the
 vectors, use the following function:
@@ -131,7 +128,7 @@ larger than the number supported by the device it will automatically be
 capped to the supported limit, so there is no need to query the number of
 vectors supported beforehand:
 
-	nvec = pci_alloc_irq_vectors(pdev, 1, nvec, 0);
+	nvec = pci_alloc_irq_vectors(pdev, 1, nvec, PCI_IRQ_ALL_TYPES)
 	if (nvec < 0)
 		goto out_err;
 
@@ -140,23 +137,22 @@ interrupts it can request a particular number of interrupts by passing that
 number to pci_alloc_irq_vectors() function as both 'min_vecs' and
 'max_vecs' parameters:
 
-	ret = pci_alloc_irq_vectors(pdev, nvec, nvec, 0);
+	ret = pci_alloc_irq_vectors(pdev, nvec, nvec, PCI_IRQ_ALL_TYPES);
 	if (ret < 0)
 		goto out_err;
 
 The most notorious example of the request type described above is enabling
 the single MSI mode for a device.  It could be done by passing two 1s as
 'min_vecs' and 'max_vecs':
 
-	ret = pci_alloc_irq_vectors(pdev, 1, 1, 0);
+	ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES);
 	if (ret < 0)
 		goto out_err;
 
 Some devices might not support using legacy line interrupts, in which case
-the PCI_IRQ_NOLEGACY flag can be used to fail the request if the platform
-can't provide MSI or MSI-X interrupts:
+the driver can specify that only MSI or MSI-X is acceptable:
 
-	nvec = pci_alloc_irq_vectors(pdev, 1, nvec, PCI_IRQ_NOLEGACY);
+	nvec = pci_alloc_irq_vectors(pdev, 1, nvec, PCI_IRQ_MSI | PCI_IRQ_MSIX);
 	if (nvec < 0)
 		goto out_err;
 

Documentation/PCI/pci.txt

@@ -124,7 +124,6 @@ initialization with a pointer to a structure describing the driver
 
 The ID table is an array of struct pci_device_id entries ending with an
 all-zero entry.  Definitions with static const are generally preferred.
-Use of the deprecated macro DEFINE_PCI_DEVICE_TABLE should be avoided.
 
 Each entry consists of:
 

Documentation/arm64/silicon-errata.txt

@@ -53,6 +53,7 @@ stable kernels.
 | ARM            | Cortex-A57      | #832075         | ARM64_ERRATUM_832075    |
 | ARM            | Cortex-A57      | #852523         | N/A                     |
 | ARM            | Cortex-A57      | #834220         | ARM64_ERRATUM_834220    |
+| ARM            | Cortex-A72      | #853709         | N/A                     |
 | ARM            | MMU-500         | #841119,#826419 | N/A                     |
 |                |                 |                 |                         |
 | Cavium         | ThunderX ITS    | #22375, #24313  | CAVIUM_ERRATUM_22375    |

Documentation/conf.py

@@ -131,7 +131,7 @@
 todo_include_todos = False
 
 primary_domain = 'C'
-highlight_language = 'C'
+highlight_language = 'guess'
 
 # -- Options for HTML output ----------------------------------------------
 

Documentation/devicetree/bindings/iio/adc/rockchip-saradc.txt

@@ -16,13 +16,20 @@ Required properties:
 - vref-supply: The regulator supply ADC reference voltage.
 - #io-channel-cells: Should be 1, see ../iio-bindings.txt
 
+Optional properties:
+- resets: Must contain an entry for each entry in reset-names if need support
+	  this option. See ../reset/reset.txt for details.
+- reset-names: Must include the name "saradc-apb".
+
 Example:
 	saradc: saradc@2006c000 {
 		compatible = "rockchip,saradc";
 		reg = <0x2006c000 0x100>;
 		interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&cru SCLK_SARADC>, <&cru PCLK_SARADC>;
 		clock-names = "saradc", "apb_pclk";
+		resets = <&cru SRST_SARADC>;
+		reset-names = "saradc-apb";
 		#io-channel-cells = <1>;
 		vref-supply = <&vcc18>;
 	};

Documentation/devicetree/bindings/serial/8250.txt

@@ -42,9 +42,6 @@ Optional properties:
 - auto-flow-control: one way to enable automatic flow control support. The
   driver is allowed to detect support for the capability even without this
   property.
-- {rts,cts,dtr,dsr,rng,dcd}-gpios: specify a GPIO for RTS/CTS/DTR/DSR/RI/DCD
-  line respectively. It will use specified GPIO instead of the peripheral
-  function pin for the UART feature. If unsure, don't specify this property.
 
 Note:
 * fsl,ns16550:
@@ -66,19 +63,3 @@ Example:
 		interrupts = <10>;
 		reg-shift = <2>;
 	};
-
-Example for OMAP UART using GPIO-based modem control signals:
-
-	uart4: serial@49042000 {
-		compatible = "ti,omap3-uart";
-		reg = <0x49042000 0x400>;
-		interrupts = <80>;
-		ti,hwmods = "uart4";
-		clock-frequency = <48000000>;
-		cts-gpios = <&gpio3 5 GPIO_ACTIVE_LOW>;
-		rts-gpios = <&gpio3 6 GPIO_ACTIVE_LOW>;
-		dtr-gpios = <&gpio1 12 GPIO_ACTIVE_LOW>;
-		dsr-gpios = <&gpio1 13 GPIO_ACTIVE_LOW>;
-		dcd-gpios = <&gpio1 14 GPIO_ACTIVE_LOW>;
-		rng-gpios = <&gpio1 15 GPIO_ACTIVE_LOW>;
-	};

Documentation/devicetree/bindings/sound/omap-mcpdm.txt

@@ -8,8 +8,6 @@ Required properties:
 - interrupts: Interrupt number for McPDM
 - interrupt-parent: The parent interrupt controller
 - ti,hwmods: Name of the hwmod associated to the McPDM
-- clocks:  phandle for the pdmclk provider, likely <&twl6040>
-- clock-names: Must be "pdmclk"
 
 Example:
 
@@ -21,11 +19,3 @@ mcpdm: mcpdm@40132000 {
 	interrupt-parent = <&gic>;
 	ti,hwmods = "mcpdm";
 };
-
-In board DTS file the pdmclk needs to be added:
-
-&mcpdm {
-	clocks = <&twl6040>;
-	clock-names = "pdmclk";
-	status = "okay";
-};

Documentation/devicetree/bindings/thermal/thermal.txt

@@ -62,7 +62,7 @@ For more examples of cooling devices, refer to the example sections below.
 Required properties:
 - #cooling-cells:	Used to provide cooling device specific information
   Type: unsigned	while referring to it. Must be at least 2, in order
-  Size: one cell      	to specify minimum and maximum cooling state used
+  Size: one cell	to specify minimum and maximum cooling state used
 			in the reference. The first cell is the minimum
 			cooling state requested and the second cell is
 			the maximum cooling state requested in the reference.
@@ -119,7 +119,7 @@ Required properties:
 Optional property:
 - contribution:		The cooling contribution to the thermal zone of the
   Type: unsigned	referred cooling device at the referred trip point.
-  Size: one cell      	The contribution is a ratio of the sum
+  Size: one cell	The contribution is a ratio of the sum
 			of all cooling contributions within a thermal zone.
 
 Note: Using the THERMAL_NO_LIMIT (-1UL) constant in the cooling-device phandle
@@ -145,7 +145,7 @@ Required properties:
   Size: one cell
 
 - thermal-sensors:	A list of thermal sensor phandles and sensor specifier
-  Type: list of 	used while monitoring the thermal zone.
+  Type: list of		used while monitoring the thermal zone.
   phandles + sensor
   specifier
 
@@ -473,7 +473,7 @@ thermal-zones {
 				  <&adc>;	/* pcb north */
 
 		/* hotspot = 100 * bandgap - 120 * adc + 484 */
-		coefficients = 		<100	-120	484>;
+		coefficients =		<100	-120	484>;
 
 		trips {
 			...
@@ -502,7 +502,7 @@ from the ADC sensor. The binding would be then:
         thermal-sensors =  <&adc>;
 
 		/* hotspot = 1 * adc + 6000 */
-	coefficients = 		<1	6000>;
+	coefficients =		<1	6000>;
 
 (d) - Board thermal
 

Documentation/filesystems/overlayfs.txt

@@ -183,12 +183,10 @@ The copy_up operation essentially creates a new, identical file and
 moves it over to the old name.  The new file may be on a different
 filesystem, so both st_dev and st_ino of the file may change.
 
-Any open files referring to this inode will access the old data and
-metadata.  Similarly any file locks obtained before copy_up will not
-apply to the copied up file.
+Any open files referring to this inode will access the old data.
 
-On a file opened with O_RDONLY fchmod(2), fchown(2), futimesat(2) and
-fsetxattr(2) will fail with EROFS.
+Any file locks (and leases) obtained before copy_up will not apply
+to the copied up file.
 
 If a file with multiple hard links is copied up, then this will
 "break" the link.  Changes will not be propagated to other names

Documentation/hwmon/ftsteutates

@@ -19,5 +19,5 @@ enhancements. It can monitor up to 4 voltages, 16 temperatures and
 implemented in this driver.
 
 Specification of the chip can be found here:
-ftp:///pub/Mainboard-OEM-Sales/Services/Software&Tools/Linux_SystemMonitoring&Watchdog&GPIO/BMC-Teutates_Specification_V1.21.pdf
-ftp:///pub/Mainboard-OEM-Sales/Services/Software&Tools/Linux_SystemMonitoring&Watchdog&GPIO/Fujitsu_mainboards-1-Sensors_HowTo-en-US.pdf
+ftp://ftp.ts.fujitsu.com/pub/Mainboard-OEM-Sales/Services/Software&Tools/Linux_SystemMonitoring&Watchdog&GPIO/BMC-Teutates_Specification_V1.21.pdf
+ftp://ftp.ts.fujitsu.com/pub/Mainboard-OEM-Sales/Services/Software&Tools/Linux_SystemMonitoring&Watchdog&GPIO/Fujitsu_mainboards-1-Sensors_HowTo-en-US.pdf

Documentation/kernel-documentation.rst

@@ -366,8 +366,6 @@ Domain`_ references.
 Cross-referencing from reStructuredText
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-.. highlight:: none
-
 To cross-reference the functions and types defined in the kernel-doc comments
 from reStructuredText documents, please use the `Sphinx C Domain`_
 references. For example::
@@ -390,8 +388,6 @@ For further details, please refer to the `Sphinx C Domain`_ documentation.
 Function documentation
 ----------------------
 
-.. highlight:: c
-
 The general format of a function and function-like macro kernel-doc comment is::
 
   /**
@@ -572,8 +568,6 @@ DocBook XML [DEPRECATED]
 Converting DocBook to Sphinx
 ----------------------------
 
-.. highlight:: none
-
 Over time, we expect all of the documents under ``Documentation/DocBook`` to be
 converted to Sphinx and reStructuredText. For most DocBook XML documents, a good
 enough solution is to use the simple ``Documentation/sphinx/tmplcvt`` script,

Documentation/kernel-parameters.txt

@@ -3032,6 +3032,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 				PAGE_SIZE is used as alignment.
 				PCI-PCI bridge can be specified, if resource
 				windows need to be expanded.
+				To specify the alignment for several
+				instances of a device, the PCI vendor,
+				device, subvendor, and subdevice may be
+				specified, e.g., 4096@pci:8086:9c22:103c:198f
 		ecrc=		Enable/disable PCIe ECRC (transaction layer
 				end-to-end CRC checking).
 				bios: Use BIOS/firmware settings. This is the

Documentation/networking/dsa/dsa.txt

@@ -587,26 +587,6 @@ of DSA, would be the its port-based VLAN, used by the associated bridge device.
 TODO
 ====
 
-The platform device problem
----------------------------
-DSA is currently implemented as a platform device driver which is far from ideal
-as was discussed in this thread:
-
-http://permalink.gmane.org/gmane.linux.network/329848
-
-This basically prevents the device driver model to be properly used and applied,
-and support non-MDIO, non-MMIO Ethernet connected switches.
-
-Another problem with the platform device driver approach is that it prevents the
-use of a modular switch drivers build due to a circular dependency, illustrated
-here:
-
-http://comments.gmane.org/gmane.linux.network/345803
-
-Attempts of reworking this has been done here:
-
-https://lwn.net/Articles/643149/
-
 Making SWITCHDEV and DSA converge towards an unified codebase
 -------------------------------------------------------------
 

Documentation/networking/rxrpc.txt

@@ -790,13 +790,12 @@ The kernel interface functions are as follows:
      Data messages can have their contents extracted with the usual bunch of
      socket buffer manipulation functions.  A data message can be determined to
      be the last one in a sequence with rxrpc_kernel_is_data_last().  When a
-     data message has been used up, rxrpc_kernel_data_delivered() should be
-     called on it..
+     data message has been used up, rxrpc_kernel_data_consumed() should be
+     called on it.
 
-     Non-data messages should be handled to rxrpc_kernel_free_skb() to dispose
-     of.  It is possible to get extra refs on all types of message for later
-     freeing, but this may pin the state of a call until the message is finally
-     freed.
+     Messages should be handled to rxrpc_kernel_free_skb() to dispose of.  It
+     is possible to get extra refs on all types of message for later freeing,
+     but this may pin the state of a call until the message is finally freed.
 
  (*) Accept an incoming call.
 
@@ -821,12 +820,14 @@ The kernel interface functions are as follows:
      Other errors may be returned if the call had been aborted (-ECONNABORTED)
      or had timed out (-ETIME).
 
- (*) Record the delivery of a data message and free it.
+ (*) Record the delivery of a data message.
 
-	void rxrpc_kernel_data_delivered(struct sk_buff *skb);
+	void rxrpc_kernel_data_consumed(struct rxrpc_call *call,
+					struct sk_buff *skb);
 
-     This is used to record a data message as having been delivered and to
-     update the ACK state for the call.  The socket buffer will be freed.
+     This is used to record a data message as having been consumed and to
+     update the ACK state for the call.  The message must still be passed to
+     rxrpc_kernel_free_skb() for disposal by the caller.
 
  (*) Free a message.
 

Documentation/power/basic-pm-debugging.txt

@@ -164,7 +164,32 @@ load n/2 modules more and try again.
 Again, if you find the offending module(s), it(they) must be unloaded every time
 before hibernation, and please report the problem with it(them).
 
-c) Advanced debugging
+c) Using the "test_resume" hibernation option
+
+/sys/power/disk generally tells the kernel what to do after creating a
+hibernation image.  One of the available options is "test_resume" which
+causes the just created image to be used for immediate restoration.  Namely,
+after doing:
+
+# echo test_resume > /sys/power/disk
+# echo disk > /sys/power/state
+
+a hibernation image will be created and a resume from it will be triggered
+immediately without involving the platform firmware in any way.
+
+That test can be used to check if failures to resume from hibernation are
+related to bad interactions with the platform firmware.  That is, if the above
+works every time, but resume from actual hibernation does not work or is
+unreliable, the platform firmware may be responsible for the failures.
+
+On architectures and platforms that support using different kernels to restore
+hibernation images (that is, the kernel used to read the image from storage and
+load it into memory is different from the one included in the image) or support
+kernel address space randomization, it also can be used to check if failures
+to resume may be related to the differences between the restore and image
+kernels.
+
+d) Advanced debugging
 
 In case that hibernation does not work on your system even in the minimal
 configuration and compiling more drivers as modules is not practical or some