Merge commit 'ccbf62d8a284cf181ac28c8e8407dd077d90dd4b' into for-next

backmerge to avoid kernel/acct.c conflict

75 files changed, 2507 insertions, 1355 deletions

diff --git a/Documentation/DocBook/device-drivers.tmpl b/Documentation/DocBook/device-drivers.tmpl
index cc63f30de166..6e06ebdbe0c7 100644
--- a/Documentation/DocBook/device-drivers.tmpl
+++ b/Documentation/DocBook/device-drivers.tmpl
@@ -54,7 +54,7 @@
 !Ikernel/sched/cpupri.c
 !Ikernel/sched/fair.c
 !Iinclude/linux/completion.h
-!Ekernel/timer.c
+!Ekernel/time/timer.c
      </sect1>
      <sect1><title>Wait queues and Wake events</title>
 !Iinclude/linux/wait.h
@@ -63,7 +63,7 @@
      <sect1><title>High-resolution timers</title>
 !Iinclude/linux/ktime.h
 !Iinclude/linux/hrtimer.h
-!Ekernel/hrtimer.c
+!Ekernel/time/hrtimer.c
      </sect1>
      <sect1><title>Workqueues and Kevents</title>
 !Ekernel/workqueue.c
diff --git a/Documentation/devicetree/bindings/timer/cirrus,clps711x-timer.txt b/Documentation/devicetree/bindings/timer/cirrus,clps711x-timer.txt
new file mode 100644
index 000000000000..cd55b52548e4
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/cirrus,clps711x-timer.txt
@@ -0,0 +1,29 @@
+* Cirrus Logic CLPS711X Timer Counter
+
+Required properties:
+- compatible: Shall contain "cirrus,clps711x-timer".
+- reg       : Address and length of the register set.
+- interrupts: The interrupt number of the timer.
+- clocks    : phandle of timer reference clock.
+
+Note: Each timer should have an alias correctly numbered in "aliases" node.
+
+Example:
+	aliases {
+		timer0 = &timer1;
+		timer1 = &timer2;
+	};
+
+	timer1: timer@80000300 {
+		compatible = "cirrus,ep7312-timer", "cirrus,clps711x-timer";
+		reg = <0x80000300 0x4>;
+		interrupts = <8>;
+		clocks = <&clks 5>;
+	};
+
+	timer2: timer@80000340 {
+		compatible = "cirrus,ep7312-timer", "cirrus,clps711x-timer";
+		reg = <0x80000340 0x4>;
+		interrupts = <9>;
+		clocks = <&clks 6>;
+	};
diff --git a/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt b/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt
new file mode 100644
index 000000000000..7c4408ff4b83
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt
@@ -0,0 +1,17 @@
+Mediatek MT6577, MT6572 and MT6589 Timers
+---------------------------------------
+
+Required properties:
+- compatible: Should be "mediatek,mt6577-timer"
+- reg: Should contain location and length for timers register.
+- clocks: Clocks driving the timer hardware. This list should include two
+	clocks. The order is system clock and as second clock the RTC clock.
+
+Examples:
+
+	timer@10008000 {
+		compatible = "mediatek,mt6577-timer";
+		reg = <0x10008000 0x80>;
+		interrupts = <GIC_SPI 113 IRQ_TYPE_LEVEL_LOW>;
+		clocks = <&system_clk>, <&rtc_clk>;
+	};
diff --git a/Documentation/devicetree/bindings/timer/renesas,cmt.txt b/Documentation/devicetree/bindings/timer/renesas,cmt.txt
new file mode 100644
index 000000000000..a17418b0ece3
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/renesas,cmt.txt
@@ -0,0 +1,47 @@
+* Renesas R-Car Compare Match Timer (CMT)
+
+The CMT is a multi-channel 16/32/48-bit timer/counter with configurable clock
+inputs and programmable compare match.
+
+Channels share hardware resources but their counter and compare match value
+are independent. A particular CMT instance can implement only a subset of the
+channels supported by the CMT model. Channel indices represent the hardware
+position of the channel in the CMT and don't match the channel numbers in the
+datasheets.
+
+Required Properties:
+
+  - compatible: must contain one of the following.
+    - "renesas,cmt-32" for the 32-bit CMT
+		(CMT0 on sh7372, sh73a0 and r8a7740)
+    - "renesas,cmt-32-fast" for the 32-bit CMT with fast clock support
+		(CMT[234] on sh7372, sh73a0 and r8a7740)
+    - "renesas,cmt-48" for the 48-bit CMT
+		(CMT1 on sh7372, sh73a0 and r8a7740)
+    - "renesas,cmt-48-gen2" for the second generation 48-bit CMT
+		(CMT[01] on r8a73a4, r8a7790 and r8a7791)
+
+  - reg: base address and length of the registers block for the timer module.
+  - interrupts: interrupt-specifier for the timer, one per channel.
+  - clocks: a list of phandle + clock-specifier pairs, one for each entry
+    in clock-names.
+  - clock-names: must contain "fck" for the functional clock.
+
+  - renesas,channels-mask: bitmask of the available channels.
+
+
+Example: R8A7790 (R-Car H2) CMT0 node
+
+	CMT0 on R8A7790 implements hardware channels 5 and 6 only and names
+	them channels 0 and 1 in the documentation.
+
+	cmt0: timer@ffca0000 {
+		compatible = "renesas,cmt-48-gen2";
+		reg = <0 0xffca0000 0 0x1004>;
+		interrupts = <0 142 IRQ_TYPE_LEVEL_HIGH>,
+			     <0 142 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&mstp1_clks R8A7790_CLK_CMT0>;
+		clock-names = "fck";
+
+		renesas,channels-mask = <0x60>;
+	};
diff --git a/Documentation/devicetree/bindings/timer/renesas,mtu2.txt b/Documentation/devicetree/bindings/timer/renesas,mtu2.txt
new file mode 100644
index 000000000000..917453f826bc
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/renesas,mtu2.txt
@@ -0,0 +1,39 @@
+* Renesas R-Car Multi-Function Timer Pulse Unit 2 (MTU2)
+
+The MTU2 is a multi-purpose, multi-channel timer/counter with configurable
+clock inputs and programmable compare match.
+
+Channels share hardware resources but their counter and compare match value
+are independent. The MTU2 hardware supports five channels indexed from 0 to 4.
+
+Required Properties:
+
+  - compatible: must contain "renesas,mtu2"
+
+  - reg: base address and length of the registers block for the timer module.
+
+  - interrupts: interrupt specifiers for the timer, one for each entry in
+    interrupt-names.
+  - interrupt-names: must contain one entry named "tgi?a" for each enabled
+    channel, where "?" is the channel index expressed as one digit from "0" to
+    "4".
+
+  - clocks: a list of phandle + clock-specifier pairs, one for each entry
+    in clock-names.
+  - clock-names: must contain "fck" for the functional clock.
+
+
+Example: R7S72100 (RZ/A1H) MTU2 node
+
+	mtu2: timer@fcff0000 {
+		compatible = "renesas,mtu2";
+		reg = <0xfcff0000 0x400>;
+		interrupts = <0 139 IRQ_TYPE_LEVEL_HIGH>,
+			     <0 146 IRQ_TYPE_LEVEL_HIGH>,
+			     <0 150 IRQ_TYPE_LEVEL_HIGH>,
+			     <0 154 IRQ_TYPE_LEVEL_HIGH>,
+			     <0 159 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-names = "tgi0a", "tgi1a", "tgi2a", "tgi3a", "tgi4a";
+		clocks = <&mstp3_clks R7S72100_CLK_MTU2>;
+		clock-names = "fck";
+	};
diff --git a/Documentation/devicetree/bindings/timer/renesas,tmu.txt b/Documentation/devicetree/bindings/timer/renesas,tmu.txt
new file mode 100644
index 000000000000..425d0c5f4aee
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/renesas,tmu.txt
@@ -0,0 +1,39 @@
+* Renesas R-Car Timer Unit (TMU)
+
+The TMU is a 32-bit timer/counter with configurable clock inputs and
+programmable compare match.
+
+Channels share hardware resources but their counter and compare match value
+are independent. The TMU hardware supports up to three channels.
+
+Required Properties:
+
+  - compatible: must contain "renesas,tmu"
+
+  - reg: base address and length of the registers block for the timer module.
+
+  - interrupts: interrupt-specifier for the timer, one per channel.
+
+  - clocks: a list of phandle + clock-specifier pairs, one for each entry
+    in clock-names.
+  - clock-names: must contain "fck" for the functional clock.
+
+Optional Properties:
+
+  - #renesas,channels: number of channels implemented by the timer, must be 2
+    or 3 (if not specified the value defaults to 3).
+
+
+Example: R8A7779 (R-Car H1) TMU0 node
+
+	tmu0: timer@ffd80000 {
+		compatible = "renesas,tmu";
+		reg = <0xffd80000 0x30>;
+		interrupts = <0 32 IRQ_TYPE_LEVEL_HIGH>,
+			     <0 33 IRQ_TYPE_LEVEL_HIGH>,
+			     <0 34 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&mstp0_clks R8A7779_CLK_TMU0>;
+		clock-names = "fck";
+
+		#renesas,channels = <3>;
+	};
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index 46a311e728a8..dd5bce848cef 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -77,6 +77,7 @@ lsi	LSI Corp. (LSI Logic)
 lltc	Linear Technology Corporation
 marvell	Marvell Technology Group Ltd.
 maxim	Maxim Integrated Products
+mediatek	MediaTek Inc.
 micrel	Micrel Inc.
 microchip	Microchip Technology Inc.
 mosaixtech	Mosaix Technologies, Inc.
diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt
index ddc531a74d04..eb8a10e22f7c 100644
--- a/Documentation/filesystems/proc.txt
+++ b/Documentation/filesystems/proc.txt
@@ -1743,6 +1743,25 @@ pair provide additional information particular to the objects they represent.
 	While the first three lines are mandatory and always printed, the rest is
 	optional and may be omitted if no marks created yet.
 
+	Timerfd files
+	~~~~~~~~~~~~~
+
+	pos:	0
+	flags:	02
+	mnt_id:	9
+	clockid: 0
+	ticks: 0
+	settime flags: 01
+	it_value: (0, 49406829)
+	it_interval: (1, 0)
+
+	where 'clockid' is the clock type and 'ticks' is the number of the timer expirations
+	that have occurred [see timerfd_create(2) for details]. 'settime flags' are
+	flags in octal form been used to setup the timer [see timerfd_settime(2) for
+	details]. 'it_value' is remaining time until the timer exiration.
+	'it_interval' is the interval for the timer. Note the timer might be set up
+	with TIMER_ABSTIME option which will be shown in 'settime flags', but 'it_value'
+	still exhibits timer's remaining time.
 
 ------------------------------------------------------------------------------
 Configuring procfs
diff --git a/MAINTAINERS b/MAINTAINERS
index c2066f4c3286..117945edf26c 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4204,7 +4204,7 @@ L:	linux-kernel@vger.kernel.org
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers/core
 S:	Maintained
 F:	Documentation/timers/
-F:	kernel/hrtimer.c
+F:	kernel/time/hrtimer.c
 F:	kernel/time/clockevents.c
 F:	kernel/time/tick*.*
 F:	kernel/time/timer_*.c
@@ -7026,10 +7026,10 @@ POSIX CLOCKS and TIMERS
 M:	Thomas Gleixner <tglx@linutronix.de>
 L:	linux-kernel@vger.kernel.org
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git timers/core
-S:	Supported
+S:	Maintained
 F:	fs/timerfd.c
 F:	include/linux/timer*
-F:	kernel/*timer*
+F:	kernel/time/*timer*
 
 POWER SUPPLY CLASS/SUBSYSTEM and DRIVERS
 M:	Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 290f02ee0157..5f38033f7a9f 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -65,7 +65,6 @@ config ARM
 	select HAVE_UID16
 	select HAVE_VIRT_CPU_ACCOUNTING_GEN
 	select IRQ_FORCED_THREADING
-	select KTIME_SCALAR
 	select MODULES_USE_ELF_REL
 	select NO_BOOTMEM
 	select OLD_SIGACTION
@@ -635,6 +634,7 @@ config ARCH_PXA
 	select AUTO_ZRELADDR
 	select CLKDEV_LOOKUP
 	select CLKSRC_MMIO
+	select CLKSRC_OF
 	select GENERIC_CLOCKEVENTS
 	select GPIO_PXA
 	select HAVE_IDE
diff --git a/arch/arm/mach-pxa/Makefile b/arch/arm/mach-pxa/Makefile
index 648867a8caa8..2fe1824c6dcb 100644
--- a/arch/arm/mach-pxa/Makefile
+++ b/arch/arm/mach-pxa/Makefile
@@ -4,7 +4,7 @@
 
 # Common support (must be linked before board specific support)
 obj-y				+= clock.o devices.o generic.o irq.o \
-				   time.o reset.o
+				   reset.o
 obj-$(CONFIG_PM)		+= pm.o sleep.o standby.o
 
 # Generic drivers that other drivers may depend upon
diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c
index 42254175fcf4..6f38e1af45af 100644
--- a/arch/arm/mach-pxa/generic.c
+++ b/arch/arm/mach-pxa/generic.c
@@ -25,11 +25,13 @@
 #include <asm/mach/map.h>
 #include <asm/mach-types.h>
 
+#include <mach/irqs.h>
 #include <mach/reset.h>
 #include <mach/smemc.h>
 #include <mach/pxa3xx-regs.h>
 
 #include "generic.h"
+#include <clocksource/pxa.h>
 
 void clear_reset_status(unsigned int mask)
 {
@@ -57,6 +59,15 @@ unsigned long get_clock_tick_rate(void)
 EXPORT_SYMBOL(get_clock_tick_rate);
 
 /*
+ * For non device-tree builds, keep legacy timer init
+ */
+void pxa_timer_init(void)
+{
+	pxa_timer_nodt_init(IRQ_OST0, io_p2v(0x40a00000),
+			    get_clock_tick_rate());
+}
+
+/*
  * Get the clock frequency as reflected by CCCR and the turbo flag.
  * We assume these values have been applied via a fcs.
  * If info is not 0 we also display the current settings.
diff --git a/arch/arm/mach-pxa/time.c b/arch/arm/mach-pxa/time.c
deleted file mode 100644
index fca174e3865d..000000000000
--- a/arch/arm/mach-pxa/time.c
+++ /dev/null
@@ -1,162 +0,0 @@
-/*
- * arch/arm/mach-pxa/time.c
- *
- * PXA clocksource, clockevents, and OST interrupt handlers.
- * Copyright (c) 2007 by Bill Gatliff <bgat@billgatliff.com>.
- *
- * Derived from Nicolas Pitre's PXA timer handler Copyright (c) 2001
- * by MontaVista Software, Inc.  (Nico, your code rocks!)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/clockchips.h>
-#include <linux/sched_clock.h>
-
-#include <asm/div64.h>
-#include <asm/mach/irq.h>
-#include <asm/mach/time.h>
-#include <mach/regs-ost.h>
-#include <mach/irqs.h>
-
-/*
- * This is PXA's sched_clock implementation. This has a resolution
- * of at least 308 ns and a maximum value of 208 days.
- *
- * The return value is guaranteed to be monotonic in that range as
- * long as there is always less than 582 seconds between successive
- * calls to sched_clock() which should always be the case in practice.
- */
-
-static u64 notrace pxa_read_sched_clock(void)
-{
-	return readl_relaxed(OSCR);
-}
-
-
-#define MIN_OSCR_DELTA 16
-
-static irqreturn_t
-pxa_ost0_interrupt(int irq, void *dev_id)
-{
-	struct clock_event_device *c = dev_id;
-
-	/* Disarm the compare/match, signal the event. */
-	writel_relaxed(readl_relaxed(OIER) & ~OIER_E0, OIER);
-	writel_relaxed(OSSR_M0, OSSR);
-	c->event_handler(c);
-
-	return IRQ_HANDLED;
-}
-
-static int
-pxa_osmr0_set_next_event(unsigned long delta, struct clock_event_device *dev)
-{
-	unsigned long next, oscr;
-
-	writel_relaxed(readl_relaxed(OIER) | OIER_E0, OIER);
-	next = readl_relaxed(OSCR) + delta;
-	writel_relaxed(next, OSMR0);
-	oscr = readl_relaxed(OSCR);
-
-	return (signed)(next - oscr) <= MIN_OSCR_DELTA ? -ETIME : 0;
-}
-
-static void
-pxa_osmr0_set_mode(enum clock_event_mode mode, struct clock_event_device *dev)
-{
-	switch (mode) {
-	case CLOCK_EVT_MODE_ONESHOT:
-		writel_relaxed(readl_relaxed(OIER) & ~OIER_E0, OIER);
-		writel_relaxed(OSSR_M0, OSSR);
-		break;
-
-	case CLOCK_EVT_MODE_UNUSED:
-	case CLOCK_EVT_MODE_SHUTDOWN:
-		/* initializing, released, or preparing for suspend */
-		writel_relaxed(readl_relaxed(OIER) & ~OIE