Merge tag 'arm-perf-3.7' of...

Merge tag 'arm-perf-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into next/cleanup

From Will Deacon:

Bunch of perf updates for the ARM backend that pave the way for
big.LITTLE support in the future. The separation of CPU and PMU code
is also the start of being able to move some of this stuff under
drivers/.

* tag 'arm-perf-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux:
  ARM: perf: move irq registration into pmu implementation
  ARM: perf: move CPU-specific PMU handling code into separate file
  ARM: perf: prepare for moving CPU PMU code into separate file
  ARM: perf: probe devicetree in preference to current CPU
  ARM: perf: remove mysterious compiler barrier
  ARM: pmu: remove arm_pmu_type enumeration
  ARM: pmu: remove unused reservation mechanism
  ARM: perf: add devicetree bindings for 11MPcore, A5, A7 and A15 PMUs
  ARM: PMU: Add runtime PM Support

Documentation/devicetree/bindings/arm/pmu.txt

@@ -7,8 +7,12 @@ representation in the device tree should be done as under:-
 Required properties:
 
 - compatible : should be one of
+	"arm,cortex-a15-pmu"
 	"arm,cortex-a9-pmu"
 	"arm,cortex-a8-pmu"
+	"arm,cortex-a7-pmu"
+	"arm,cortex-a5-pmu"
+	"arm,arm11mpcore-pmu"
 	"arm,arm1176-pmu"
 	"arm,arm1136-pmu"
 - interrupts : 1 combined interrupt or 1 per core.

MAINTAINERS

@@ -595,7 +595,6 @@ M:	Will Deacon <will.deacon@arm.com>
 S:	Maintained
 F:	arch/arm/kernel/perf_event*
 F:	arch/arm/oprofile/common.c
-F:	arch/arm/kernel/pmu.c
 F:	arch/arm/include/asm/pmu.h
 F:	arch/arm/kernel/hw_breakpoint.c
 F:	arch/arm/include/asm/hw_breakpoint.h

arch/arm/Kconfig

@@ -1169,12 +1169,6 @@ config XSCALE_PMU
 	depends on CPU_XSCALE
 	default y
 
-config CPU_HAS_PMU
-	depends on (CPU_V6 || CPU_V6K || CPU_V7 || XSCALE_PMU) && \
-		   (!ARCH_OMAP3 || OMAP3_EMU)
-	default y
-	bool
-
 config MULTI_IRQ_HANDLER
 	bool
 	help
@@ -1747,7 +1741,7 @@ config HIGHPTE
 
 config HW_PERF_EVENTS
 	bool "Enable hardware performance counter support for perf events"
-	depends on PERF_EVENTS && CPU_HAS_PMU
+	depends on PERF_EVENTS
 	default y
 	help
 	  Enable hardware performance counter support for perf events. If

arch/arm/include/asm/perf_event.h

@@ -12,6 +12,13 @@
 #ifndef __ARM_PERF_EVENT_H__
 #define __ARM_PERF_EVENT_H__
 
-/* Nothing to see here... */
+/*
+ * The ARMv7 CPU PMU supports up to 32 event counters.
+ */
+#define ARMPMU_MAX_HWEVENTS		32
+
+#define HW_OP_UNSUPPORTED		0xFFFF
+#define C(_x)				PERF_COUNT_HW_CACHE_##_x
+#define CACHE_OP_UNSUPPORTED		0xFFFF
 
 #endif /* __ARM_PERF_EVENT_H__ */

arch/arm/include/asm/pmu.h

@@ -15,15 +15,6 @@
 #include <linux/interrupt.h>
 #include <linux/perf_event.h>
 
-/*
- * Types of PMUs that can be accessed directly and require mutual
- * exclusion between profiling tools.
- */
-enum arm_pmu_type {
-	ARM_PMU_DEVICE_CPU	= 0,
-	ARM_NUM_PMU_DEVICES,
-};
-
 /*
  * struct arm_pmu_platdata - ARM PMU platform data
  *
@@ -31,54 +22,24 @@ enum arm_pmu_type {
  *	interrupt and passed the address of the low level handler,
  *	and can be used to implement any platform specific handling
  *	before or after calling it.
- * @enable_irq: an optional handler which will be called after
- *	request_irq and be used to handle some platform specific
- *	irq enablement
- * @disable_irq: an optional handler which will be called before
- *	free_irq and be used to handle some platform specific
- *	irq disablement
+ * @runtime_resume: an optional handler which will be called by the
+ *	runtime PM framework following a call to pm_runtime_get().
+ *	Note that if pm_runtime_get() is called more than once in
+ *	succession this handler will only be called once.
+ * @runtime_suspend: an optional handler which will be called by the
+ *	runtime PM framework following a call to pm_runtime_put().
+ *	Note that if pm_runtime_get() is called more than once in
+ *	succession this handler will only be called following the
+ *	final call to pm_runtime_put() that actually disables the
+ *	hardware.
  */
 struct arm_pmu_platdata {
 	irqreturn_t (*handle_irq)(int irq, void *dev,
 				  irq_handler_t pmu_handler);
-	void (*enable_irq)(int irq);
-	void (*disable_irq)(int irq);
+	int (*runtime_resume)(struct device *dev);
+	int (*runtime_suspend)(struct device *dev);
 };
 
-#ifdef CONFIG_CPU_HAS_PMU
-
-/**
- * reserve_pmu() - reserve the hardware performance counters
- *
- * Reserve the hardware performance counters in the system for exclusive use.
- * Returns 0 on success or -EBUSY if the lock is already held.
- */
-extern int
-reserve_pmu(enum arm_pmu_type type);
-
-/**
- * release_pmu() - Relinquish control of the performance counters
- *
- * Release the performance counters and allow someone else to use them.
- */
-extern void
-release_pmu(enum arm_pmu_type type);
-
-#else /* CONFIG_CPU_HAS_PMU */
-
-#include <linux/err.h>
-
-static inline int
-reserve_pmu(enum arm_pmu_type type)
-{
-	return -ENODEV;
-}
-
-static inline void
-release_pmu(enum arm_pmu_type type)	{ }
-
-#endif /* CONFIG_CPU_HAS_PMU */
-
 #ifdef CONFIG_HW_PERF_EVENTS
 
 /* The events for a given PMU register set. */
@@ -103,7 +64,6 @@ struct pmu_hw_events {
 
 struct arm_pmu {
 	struct pmu	pmu;
-	enum arm_pmu_type type;
 	cpumask_t	active_irqs;
 	char		*name;
 	irqreturn_t	(*handle_irq)(int irq_num, void *dev);
@@ -118,6 +78,8 @@ struct arm_pmu {
 	void		(*start)(void);
 	void		(*stop)(void);
 	void		(*reset)(void *);
+	int		(*request_irq)(irq_handler_t handler);
+	void		(*free_irq)(void);
 	int		(*map_event)(struct perf_event *event);
 	int		num_events;
 	atomic_t	active_events;
@@ -129,7 +91,9 @@ struct arm_pmu {
 
 #define to_arm_pmu(p) (container_of(p, struct arm_pmu, pmu))
 
-int __init armpmu_register(struct arm_pmu *armpmu, char *name, int type);
+extern const struct dev_pm_ops armpmu_dev_pm_ops;
+
+int armpmu_register(struct arm_pmu *armpmu, char *name, int type);
 
 u64 armpmu_event_update(struct perf_event *event,
 			struct hw_perf_event *hwc,
@@ -139,6 +103,13 @@ int armpmu_event_set_period(struct perf_event *event,
 			    struct hw_perf_event *hwc,
 			    int idx);
 
+int armpmu_map_event(struct perf_event *event,
+		     const unsigned (*event_map)[PERF_COUNT_HW_MAX],
+		     const unsigned (*cache_map)[PERF_COUNT_HW_CACHE_MAX]
+						[PERF_COUNT_HW_CACHE_OP_MAX]
+						[PERF_COUNT_HW_CACHE_RESULT_MAX],
+		     u32 raw_event_mask);
+
 #endif /* CONFIG_HW_PERF_EVENTS */
 
 #endif /* __ARM_PMU_H__ */

arch/arm/kernel/Makefile

@@ -69,8 +69,7 @@ obj-$(CONFIG_CPU_XSC3)		+= xscale-cp0.o
 obj-$(CONFIG_CPU_MOHAWK)	+= xscale-cp0.o
 obj-$(CONFIG_CPU_PJ4)		+= pj4-cp0.o
 obj-$(CONFIG_IWMMXT)		+= iwmmxt.o
-obj-$(CONFIG_CPU_HAS_PMU)	+= pmu.o
-obj-$(CONFIG_HW_PERF_EVENTS)	+= perf_event.o
+obj-$(CONFIG_HW_PERF_EVENTS)	+= perf_event.o perf_event_cpu.o
 AFLAGS_iwmmxt.o			:= -Wa,-mcpu=iwmmxt
 obj-$(CONFIG_ARM_CPU_TOPOLOGY)  += topology.o
 

arch/arm/kernel/perf_event_cpu.c

+/*
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright (C) 2012 ARM Limited
+ *
+ * Author: Will Deacon <will.deacon@arm.com>
+ */
+#define pr_fmt(fmt) "CPU PMU: " fmt
+
+#include <linux/bitmap.h>
+#include <linux/export.h>
+#include <linux/kernel.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/spinlock.h>
+
+#include <asm/cputype.h>
+#include <asm/irq_regs.h>
+#include <asm/pmu.h>
+
+/* Set at runtime when we know what CPU type we are. */
+static struct arm_pmu *cpu_pmu;
+
+static DEFINE_PER_CPU(struct perf_event * [ARMPMU_MAX_HWEVENTS], hw_events);
+static DEFINE_PER_CPU(unsigned long [BITS_TO_LONGS(ARMPMU_MAX_HWEVENTS)], used_mask);
+static DEFINE_PER_CPU(struct pmu_hw_events, cpu_hw_events);
+
+/*
+ * Despite the names, these two functions are CPU-specific and are used
+ * by the OProfile/perf code.
+ */
+const char *perf_pmu_name(void)
+{
+	if (!cpu_pmu)
+		return NULL;
+
+	return cpu_pmu->pmu.name;
+}
+EXPORT_SYMBOL_GPL(perf_pmu_name);
+
+int perf_num_counters(void)
+{
+	int max_events = 0;
+
+	if (cpu_pmu != NULL)
+		max_events = cpu_pmu->num_events;
+
+	return max_events;
+}
+EXPORT_SYMBOL_GPL(perf_num_counters);
+
+/* Include the PMU-specific implementations. */
+#include "perf_event_xscale.c"
+#include "perf_event_v6.c"
+#include "perf_event_v7.c"
+
+static struct pmu_hw_events *cpu_pmu_get_cpu_events(void)
+{
+	return &__get_cpu_var(cpu_hw_events);
+}
+
+static void cpu_pmu_free_irq(void)
+{
+	int i, irq, irqs;
+	struct platform_device *pmu_device = cpu_pmu->plat_device;
+
+	irqs = min(pmu_device->num_resources, num_possible_cpus());
+
+	for (i = 0; i < irqs; ++i) {
+		if (!cpumask_test_and_clear_cpu(i, &cpu_pmu->active_irqs))
+			continue;
+		irq = platform_get_irq(pmu_device, i);
+		if (irq >= 0)
+			free_irq(irq, cpu_pmu);
+	}
+}
+
+static int cpu_pmu_request_irq(irq_handler_t handler)
+{
+	int i, err, irq, irqs;
+	struct platform_device *pmu_device = cpu_pmu->plat_device;
+
+	if (!pmu_device)
+		return -ENODEV;
+
+	irqs = min(pmu_device->num_resources, num_possible_cpus());
+	if (irqs < 1) {
+		pr_err("no irqs for PMUs defined\n");
+		return -ENODEV;
+	}
+
+	for (i = 0; i < irqs; ++i) {
+		err = 0;
+		irq = platform_get_irq(pmu_device, i);
+		if (irq < 0)
+			continue;
+
+		/*
+		 * If we have a single PMU interrupt that we can't shift,
+		 * assume that we're running on a uniprocessor machine and
+		 * continue. Otherwise, continue without this interrupt.
+		 */
+		if (irq_set_affinity(irq, cpumask_of(i)) && irqs > 1) {
+			pr_warning("unable to set irq affinity (irq=%d, cpu=%u)\n",
+				    irq, i);
+			continue;
+		}
+
+		err = request_irq(irq, handler, IRQF_NOBALANCING, "arm-pmu",
+				  cpu_pmu);
+		if (err) {
+			pr_err("unable to request IRQ%d for ARM PMU counters\n",
+				irq);
+			return err;
+		}
+
+		cpumask_set_cpu(i, &cpu_pmu->active_irqs);
+	}
+
+	return 0;
+}
+
+static void __devinit cpu_pmu_init(struct arm_pmu *cpu_pmu)
+{
+	int cpu;
+	for_each_possible_cpu(cpu) {
+		struct pmu_hw_events *events = &per_cpu(cpu_hw_events, cpu);
+		events->events = per_cpu(hw_events, cpu);
+		events->used_mask = per_cpu(used_mask, cpu);
+		raw_spin_lock_init(&events->pmu_lock);
+	}
+
+	cpu_pmu->get_hw_events	= cpu_pmu_get_cpu_events;
+	cpu_pmu->request_irq	= cpu_pmu_request_irq;
+	cpu_pmu->free_irq	= cpu_pmu_free_irq;
+
+	/* Ensure the PMU has sane values out of reset. */
+	if (cpu_pmu && cpu_pmu->reset)
+		on_each_cpu(cpu_pmu->reset, NULL, 1);
+}
+
+/*
+ * PMU hardware loses all context when a CPU goes offline.
+ * When a CPU is hotplugged back in, since some hardware registers are
+ * UNKNOWN at reset, the PMU must be explicitly reset to avoid reading
+ * junk values out of them.
+ */
+static int __cpuinit cpu_pmu_notify(struct notifier_block *b,
+				    unsigned long action, void *hcpu)
+{
+	if ((action & ~CPU_TASKS_FROZEN) != CPU_STARTING)
+		return NOTIFY_DONE;
+
+	if (cpu_pmu && cpu_pmu->reset)
+		cpu_pmu->reset(NULL);
+
+	return NOTIFY_OK;
+}
+
+static struct notifier_block __cpuinitdata cpu_pmu_hotplug_notifier = {
+	.notifier_call = cpu_pmu_notify,
+};
+
+/*
+ * PMU platform driver and devicetree bindings.
+ */
+static struct of_device_id __devinitdata cpu_pmu_of_device_ids[] = {
+	{.compatible = "arm,cortex-a15-pmu",	.data = armv7_a15_pmu_init},
+	{.compatible = "arm,cortex-a9-pmu",	.data = armv7_a9_pmu_init},
+	{.compatible = "arm,cortex-a8-pmu",	.data = armv7_a8_pmu_init},
+	{.compatible = "arm,cortex-a7-pmu",	.data = armv7_a7_pmu_init},
+	{.compatible = "arm,cortex-a5-pmu",	.data = armv7_a5_pmu_init},
+	{.compatible = "arm,arm11mpcore-pmu",	.data = armv6mpcore_pmu_init},
+	{.compatible = "arm,arm1176-pmu",	.data = armv6pmu_init},
+	{.compatible = "arm,arm1136-pmu",	.data = armv6pmu_init},
+	{},
+};
+
+static struct platform_device_id __devinitdata cpu_pmu_plat_device_ids[] = {
+	{.name = "arm-pmu"},
+	{},
+};
+
+/*
+ * CPU PMU identification and probing.
+ */
+static struct arm_pmu *__devinit probe_current_pmu(void)
+{
+	struct arm_pmu *pmu = NULL;
+	int cpu = get_cpu();
+	unsigned long cpuid = read_cpuid_id();
+	unsigned long implementor = (cpuid & 0xFF000000) >> 24;
+	unsigned long part_number = (cpuid & 0xFFF0);
+
+	pr_info("probing PMU on CPU %d\n", cpu);
+
+	/* ARM Ltd CPUs. */
+	if (0x41 == implementor) {
+		switch (part_number) {
+		case 0xB360:	/* ARM1136 */
+		case 0xB560:	/* ARM1156 */
+		case 0xB760:	/* ARM1176 */
+			pmu = armv6pmu_init();
+			break;
+		case 0xB020:	/* ARM11mpcore */
+			pmu = armv6mpcore_pmu_init();
+			break;
+		case 0xC080:	/* Cortex-A8 */
+			pmu = armv7_a8_pmu_init();
+			break;
+		case 0xC090:	/* Cortex-A9 */
+			pmu = armv7_a9_pmu_init();
+			break;
+		case 0xC050:	/* Cortex-A5 */
+			pmu = armv7_a5_pmu_init();
+			break;
+		case 0xC0F0:	/* Cortex-A15 */
+			pmu = armv7_a15_pmu_init();
+			break;
+		case 0xC070:	/* Cortex-A7 */
+			pmu = armv7_a7_pmu_init();
+			break;
+		}
+	/* Intel CPUs [xscale]. */
+	} else if (0x69 == implementor) {
+		part_number = (cpuid >> 13) & 0x7;
+		switch (part_number) {
+		case 1:
+			pmu = xscale1pmu_init();
+			break;
+		case 2:
+			pmu = xscale2pmu_init();
+			break;
+		}
+	}
+
+	put_cpu();
+	return pmu;
+}
+
+static int __devinit cpu_pmu_device_probe(struct platform_device *pdev)
+{
+	const struct of_device_id *of_id;
+	struct arm_pmu *(*init_fn)(void);
+	struct device_node *node = pdev->dev.of_node;
+
+	if (cpu_pmu) {
+		pr_info("attempt to register multiple PMU devices!");
+		return -ENOSPC;
+	}
+
+	if (node && (of_id = of_match_node(cpu_pmu_of_device_ids, pdev->dev.of_node))) {
+		init_fn = of_id->data;
+		cpu_pmu = init_fn();
+	} else {
+		cpu_pmu = probe_current_pmu();
+	}
+
+	if (!cpu_pmu)
+		return -ENODEV;
+
+	cpu_pmu->plat_device = pdev;
+	cpu_pmu_init(cpu_pmu);
+	register_cpu_notifier(&cpu_pmu_hotplug_notifier);
+	armpmu_register(cpu_pmu, cpu_pmu->name, PERF_TYPE_RAW);
+
+	return 0;
+}
+
+static struct platform_driver cpu_pmu_driver = {
+	.driver		= {
+		.name	= "arm-pmu",
+		.pm	= &armpmu_dev_pm_ops,
+		.of_match_table = cpu_pmu_of_device_ids,
+	},
+	.probe		= cpu_pmu_device_probe,
+	.id_table	= cpu_pmu_plat_device_ids,
+};
+
+static int __init register_pmu_driver(void)
+{
+	return platform_driver_register(&cpu_pmu_driver);
+}
+device_initcall(register_pmu_driver);

arch/arm/kernel/perf_event_v6.c

@@ -645,7 +645,7 @@ armv6mpcore_pmu_disable_event(struct hw_perf_event *hwc,
 
 static int armv6_map_event(struct perf_event *event)
 {
-	return map_cpu_event(event, &armv6_perf_map,
+	return armpmu_map_event(event, &armv6_perf_map,
 				&armv6_perf_cache_map, 0xFF);
 }
 
@@ -664,7 +664,7 @@ static struct arm_pmu armv6pmu = {
 	.max_period		= (1LLU << 32) - 1,
 };
 
-static struct arm_pmu *__init armv6pmu_init(void)
+static struct arm_pmu *__devinit armv6pmu_init(void)
 {
 	return &armv6pmu;
 }
@@ -679,7 +679,7 @@ static struct arm_pmu *__init armv6pmu_init(void)
 
 static int armv6mpcore_map_event(struct perf_event *event)
 {
-	return map_cpu_event(event, &armv6mpcore_perf_map,
+	return armpmu_map_event(event, &armv6mpcore_perf_map,
 				&armv6mpcore_perf_cache_map, 0xFF);
 }
 
@@ -698,17 +698,17 @@ static struct arm_pmu armv6mpcore_pmu = {
 	.max_period		= (1LLU << 32) - 1,
 };
 
-static struct arm_pmu *__init armv6mpcore_pmu_init(void)
+static struct arm_pmu *__devinit armv6mpcore_pmu_init(void)
 {
 	return &armv6mpcore_pmu;
 }
 #else
-static struct arm_pmu *__init armv6pmu_init(void)
+static struct arm_pmu *__devinit armv6pmu_init(void)
 {
 	return NULL;
 }
 
-static struct arm_pmu *__init armv6mpcore_pmu_init(void)
+static struct arm_pmu *__devinit armv6mpcore_pmu_init(void)
 {
 	return NULL;
 }

arch/arm/kernel/perf_event_v7.c

@@ -1204,31 +1204,31 @@ static void armv7pmu_reset(void *info)
 
 static int armv7_a8_map_event(struct perf_event *event)
 {
-	return map_cpu_event(event, &armv7_a8_perf_map,
+	return armpmu_map_event(event, &armv7_a8_perf_map,
 				&armv7_a8_perf_cache_map, 0xFF);
 }
 
 static int armv7_a9_map_event(struct perf_event *event)
 {
-	return map_cpu_event(event, &armv7_a9_perf_map,
+	return armpmu_map_event(event, &armv7_a9_perf_map,
 				&armv7_a9_perf_cache_map, 0xFF);
 }
 
 static int armv7_a5_map_event(struct perf_event *event)
 {
-	return map_cpu_event(event, &armv7_a5_perf_map,
+	return armpmu_map_event(event, &armv7_a5_perf_map,
 				&armv7_a5_perf_cache_map, 0xFF);
 }
 
 static int armv7_a15_map_event(struct perf_event *event)
 {
-	return map_cpu_event(event, &armv7_a15_perf_map,
+	return armpmu_map_event(event, &armv7_a15_perf_map,
 				&armv7_a15_perf_cache_map, 0xFF);
 }
 
 static int armv7_a7_map_event(struct perf_event *event)
 {
-	return map_cpu_event(event, &armv7_a7_perf_map,
+	return armpmu_map_event(event, &armv7_a7_perf_map,
 				&armv7_a7_perf_cache_map, 0xFF);
 }
 
@@ -1245,7 +1245,7 @@ static struct arm_pmu armv7pmu = {
 	.max_period		= (1LLU << 32) - 1,
 };
 
-static u32 __init armv7_read_num_pmnc_events(void)
+static u32 __devinit armv7_read_num_pmnc_events(void)
 {
 	u32 nb_cnt;
 
@@ -1256,7 +1256,7 @@ static u32 __init armv7_read_num_pmnc_events(void)
 	return nb_cnt + 1;
 }
 
-static struct arm_pmu *__init armv7_a8_pmu_init(void)
+static struct arm_pmu *__devinit armv7_a8_pmu_init(void)
 {
 	armv7pmu.name		= "ARMv7 Cortex-A8";
 	armv7pmu.map_event	= armv7_a8_map_event;
@@ -1264,7 +1264,7 @@ static struct arm_pmu *__init armv7_a8_pmu_init(void)
 	return &armv7pmu;
 }
 
-static struct arm_pmu *__init armv7_a9_pmu_init(void)
+static struct arm_pmu *__devinit armv7_a9_pmu_init(void)
 {
 	armv7pmu.name		= "ARMv7 Cortex-A9";
 	armv7pmu.map_event	= armv7_a9_map_event;
@@ -1272,7 +1272,7 @@ static struct arm_pmu *__init armv7_a9_pmu_init(void)
 	return &armv7pmu;
 }
 
-static struct arm_pmu *__init armv7_a5_pmu_init(void)
+static struct arm_pmu *__devinit armv7_a5_pmu_init(void)
 {
 	armv7pmu.name		= "ARMv7 Cortex-A5";
 	armv7pmu.map_event	= armv7_a5_map_event;
@@ -1280,7 +1280,7 @@ static struct arm_pmu *__init armv7_a5_pmu_init(void)
 	return &armv7pmu;
 }
 
-static struct arm_pmu *__init armv7_a15_pmu_init(void)
+static struct arm_pmu *__devinit armv7_a15_pmu_init(void)
 {
 	armv7pmu.name		= "ARMv7 Cortex-A15";
 	armv7pmu.map_event	= armv7_a15_map_event;
@@ -1289,7 +1289,7 @@ static struct arm_pmu *__init armv7_a15_pmu_init(void)
 	return &armv7pmu;
 }
 
-static struct arm_pmu *__init armv7_a7_pmu_init(void)
+static struct arm_pmu *__devinit armv7_a7_pmu_init(void)
 {
 	armv7pmu.name		= "ARMv7 Cortex-A7";
 	armv7pmu.map_event	= armv7_a7_map_event;
@@ -1298,27 +1298,27 @@ static struct arm_pmu *__init armv7_a7_pmu_init(void)
 	return &armv7pmu;
 }
 #else
-static struct arm_pmu *__init armv7_a8_pmu_init(void)
+static struct arm_pmu *__devinit armv7_a8_pmu_init(void)
 {
 	return NULL;
 }
 
-static struct arm_pmu *__init armv7_a9_pmu_init(void)
+static struct arm_pmu *__devinit armv7_a9_pmu_init(void)
 {
 	return NULL;
 }
 
-static struct arm_pmu *__init armv7_a5_pmu_init(void)
+static struct arm_pmu *__devinit armv7_a5_pmu_init(void)
 {
 	return NULL;
 }
 
-static struct arm_pmu *__init armv7_a15_pmu_init(void)
+static struct arm_pmu *__devinit armv7_a15_pmu_init(void)
 {
 	return NULL;
 }
 
-static struct arm_pmu *__init armv7_a7_pmu_init(void)
+static struct arm_pmu *__devinit armv7_a7_pmu_init(void)
 {
 	return NULL;
 }

arch/arm/kernel/perf_event_xscale.c

@@ -430,7 +430,7 @@ xscale1pmu_write_counter(int counter, u32 val)
 
 static int xscale_map_event(struct perf_event *event)
 {
-	return map_cpu_event(event, &xscale_perf_map,
+	return armpmu_map_event(event, &xscale_perf_map,
 				&xscale_perf_cache_map, 0xFF);
 }
 
@@ -449,7 +449,7 @@ static struct arm_pmu xscale1pmu = {
 	.max_period	= (1LLU << 32) - 1,
 };
 
-static struct arm_pmu *__init xscale1pmu_init(void)
+static struct arm_pmu *__devinit xscale1pmu_init(void)
 {
 	return &xscale1pmu;
 }
@@ -816,17 +816,17 @@ static struct arm_pmu xscale2pmu = {
 	.max_period	= (1LLU << 32) - 1,
 };
 
-static struct arm_pmu *__init xscale2pmu_init(void)
+static struct arm_pmu *__devinit xscale2pmu_init(void)
 {
 	return &xscale2pmu;
 }
 #else
-static struct arm_pmu *__init xscale1pmu_init(void)
+static struct arm_pmu *__devinit xscale1pmu_init(void)
 {
 	return NULL;
 }
 
-static struct arm_pmu *__init xscale2pmu_init(void)
+static struct arm_pmu *__devinit xscale2pmu_init(void)
 {
 	return NULL;
 }

arch/arm/kernel/pmu.c

-/*
- *  linux/arch/arm/kernel/pmu.c
- *
- *  Copyright (C) 2009 picoChip Designs Ltd, Jamie Iles
- *  Copyright (C) 2010 ARM Ltd, Will Deacon
- *
- * 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/err.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-
-#include <asm/pmu.h>
-
-/*
- * PMU locking to ensure mutual exclusion between different subsystems.
- */
-static unsigned long pmu_lock[BITS_TO_LONGS(ARM_NUM_PMU_DEVICES)];
-
-int
-reserve_pmu(enum arm_pmu_type type)
-{
-	return test_and_set_bit_lock(type, pmu_lock) ? -EBUSY : 0;
-}
-EXPORT_SYMBOL_GPL(reserve_pmu);
-
-void
-release_pmu(enum arm_pmu_type type)
-{
-	clear_bit_unlock(type, pmu_lock);
-}
-EXPORT_SYMBOL_GPL(release_pmu);

arch/arm/mach-bcmring/arch.c

@@ -29,7 +29,6 @@
 #include <asm/setup.h>
 #include <asm/mach-types.h>
 #include <asm/mach/time.h>
-#include <asm/pmu.h>
 
 #include <asm/mach/arch.h>
 #include <mach/dma.h>
@@ -116,7 +115,7 @@ static struct resource pmu_resource = {
 
 static struct platform_device pmu_device = {
 	.name		= "arm-pmu",
-	.id		= ARM_PMU_DEVICE_CPU,
+	.id		= -1,
 	.resource	= &pmu_resource,
 	.num_resources	= 1,
 };

arch/arm/mach-omap2/devices.c

@@ -23,7 +23,6 @@
 #include <mach/irqs.h>
 #include <asm/mach-types.h>
 #include <asm/mach/map.h>
-#include <asm/pmu.h>
 
 #include "iomap.h"
 #include <plat/board.h>
@@ -448,7 +447,7 @@ static struct resource omap3_pmu_resource = {
 
 static struct platform_device omap_pmu_device = {
 	.name		= "arm-pmu",
-	.id		= ARM_PMU_DEVICE_CPU,
+	.id		= -1,
 	.num_resources	= 1,
 };
 

arch/arm/mach-pxa/devices.c

@@ -6,7 +6,6 @@
 #include <linux/spi/pxa2xx_spi.h>
 #include <linux/i2c/pxa-i2c.h>
 
-#include <asm/pmu.h>
 #include <mach/udc.h>
 #include <mach/pxa3xx-u2d.h>
 #include <mach/pxafb.h>
@@ -42,7 +41,7 @@ static struct resource pxa_resource_pmu = {
 
 struct platform_device pxa_device_pmu = {
 	.name		= "arm-pmu",
-	.id		= ARM_PMU_DEVICE_CPU,
+	.id		= -1,
 	.resource	= &pxa_resource_pmu,
 	.num_resources	= 1,
 };

arch/arm/mach-realview/realview_eb.c

@@ -32,7 +32,6 @@
 #include <asm/irq.h>
 #include <asm/leds.h>
 #include <asm/mach-types.h>
-#include <asm/pmu.h>
 #include <asm/pgtable.h>
 #include <asm/hardware/gic.h>
 #include <asm/hardware/cache-l2x0.h>
@@ -297,7 +296,7 @@ static struct resource pmu_resources[] = {
 
 static struct platform_device pmu_device = {
 	.name			= "arm-pmu",
-	.id			= ARM_PMU_DEVICE_CPU,
+	.id			= -1,
 	.num_resources		= ARRAY_SIZE(pmu_resources),
 	.resource		= pmu_resources,
 };

arch/arm/mach-realview/realview_pb1176.c

@@ -34,7 +34,6 @@
 #include <asm/irq.h>
 #include <asm/leds.h>
 #include <asm/mach-types.h>
-#include <asm/pmu.h>
 #include <asm/pgtable.h>
 #include <asm/hardware/gic.h>
 #include <asm/hardware/cache-l2x0.h>
@@ -280,7 +279,7 @@ static struct resource pmu_resource = {
 
 static struct platform_device pmu_device = {
 	.name			= "arm-pmu",
-	.id			= ARM_PMU_DEVICE_CPU,
+	.id			= -1,
 	.num_resources		= 1,
 	.resource		= &pmu_resource,
 };

arch/arm/mach-realview/realview_pb11mp.c

@@ -32,7 +32,6 @@
 #include <asm/irq.h>
 #include <asm/leds.h>
 #include <asm/mach-types.h>
-#include <asm/pmu.h>
 #include <asm/pgtable.h>
 #include <asm/hardware/gic.h>
 #include <asm/hardware/cache-l2x0.h>
@@ -263,7 +262,7 @@ static struct resource pmu_resources[] = {
 
 static struct platform_device pmu_device = {
 	.name			= "arm-pmu",
-	.id			= ARM_PMU_DEVICE_CPU,
+	.id			= -1,
 	.num_resources		= ARRAY_SIZE(pmu_resources),
 	.resource		= pmu_resources,
 };

arch/arm/mach-realview/realview_pba8.c

@@ -31,7 +31,6 @@
 #include <asm/irq.h>
 #include <asm/leds.h>
 #include <asm/mach-types.h>
-#include <asm/pmu.h>
 #include <asm/pgtable.h>
 #include <asm/hardware/gic.h>
 
@@ -241,7 +240,7 @@ static struct resource pmu_resource = {
 
 static struct platform_device pmu_device = {
 	.name			= "arm-pmu",
-	.id			= ARM_PMU_DEVICE_CPU,
+	.id			= -1,
 	.num_resources		= 1,
 	.resource		= &pmu_resource,
 };

arch/arm/mach-realview/realview_pbx.c

@@ -30,7 +30,6 @@
 #include <asm/irq.h>
 #include <asm/leds.h>
 #include <asm/mach-types.h>
-#include <asm/pmu.h>
 #include <asm/smp_twd.h>
 #include <asm/pgtable.h>
 #include <asm/hardware/gic.h>
@@ -280,7 +279,7 @@ static struct resource pmu_resources[] = {
 
 static struct platform_device pmu_device = {
 	.name			= "arm-pmu",
-	.id			= ARM_PMU_DEVICE_CPU,
+	.id			= -1,
 	.num_resources		= ARRAY_SIZE(pmu_resources),
 	.resource		= pmu_resources,
 };

arch/arm/mach-tegra/devices.c

@@ -23,7 +23,6 @@
 #include <linux/fsl_devices.h>
 #include <linux/serial_8250.h>
 #include <linux/i2c-tegra.h>
-#include <asm/pmu.h>
 #include <mach/irqs.h>
 #include <mach/iomap.h>
 #include <mach/dma.h>
@@ -516,7 +515,7 @@ static struct resource tegra_pmu_resources[] = {
 
 struct platform_device tegra_pmu_device = {
 	.name		= "arm-pmu",
-	.id		= ARM_PMU_DEVICE_CPU,
+	.id		= -1,
 	.num_resources	= ARRAY_SIZE(tegra_pmu_resources),
 	.resource	= tegra_pmu_resources,
 };

arch/arm/mach-ux500/cpu-db8500.c

@@ -19,7 +19,6 @@
 #include <linux/mfd/abx500/ab8500.h>
 
 #include <asm/mach/map.h>
-#include <asm/pmu.h>
 #include <plat/gpio-nomadik.h>
 #include <mach/hardware.h>
 #include <mach/setup.h>
@@ -122,7 +121,7 @@ struct arm_pmu_platdata db8500_pmu_platdata = {
 
 static struct platform_device db8500_pmu_device = {
 	.name			= "arm-pmu",
-	.id			= ARM_PMU_DEVICE_CPU,
+	.id			= -1,
 	.num_resources		= ARRAY_SIZE(db8500_pmu_resources),
 	.resource		= db8500_pmu_resources,
 	.dev.platform_data	= &db8500_pmu_platdata,

arch/arm/mach-vexpress/ct-ca9x4.c

@@ -13,7 +13,6 @@
 #include <asm/hardware/arm_timer.h>
 #include <asm/hardware/cache-l2x0.h>
 #include <asm/hardware/gic.h>
-#include <asm/pmu.h>
 #include <asm/smp_scu.h>
 #include <asm/smp_twd.h>
 
@@ -144,7 +143,7 @@ static struct resource pmu_resources[] = {
 
 static struct platform_device pmu_device = {
 	.name		= "arm-pmu",
-	.id		= ARM_PMU_DEVICE_CPU,
+	.id		= -1,
 	.num_resources	= ARRAY_SIZE(pmu_resources),
 	.resource	= pmu_resources,
 };

arch/arm/plat-iop/pmu.c

@@ -9,7 +9,6 @@
  */
 
 #include <linux/platform_device.h>
-#include <asm/pmu.h>
 #include <mach/irqs.h>
 
 static struct resource pmu_resource = {
@@ -26,7 +25,7 @@ static struct resource pmu_resource = {
 
 static struct platform_device pmu_device = {
 	.name		= "arm-pmu",
-	.id		= ARM_PMU_DEVICE_CPU,
+	.id		= -1,
 	.resource	= &pmu_resource,
 	.num_resources	= 1,
 };

arch/arm/plat-samsung/devs.c

@@ -33,7 +33,6 @@
 #include <linux/platform_data/s3c-hsotg.h>
 
 #include <asm/irq.h>
-#include <asm/pmu.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
 #include <asm/mach/irq.h>
@@ -1105,7 +1104,7 @@ static struct resource s5p_pmu_resource[] = {
 
 static struct platform_device s5p_device_pmu = {
 	.name		= "arm-pmu",
-	.id		= ARM_PMU_DEVICE_CPU,
+	.id		= -1,
 	.num_resources	= ARRAY_SIZE(s5p_pmu_resource),
 	.resource	= s5p_pmu_resource,
 };