summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--MAINTAINERS1
-rw-r--r--arch/arm/Kconfig8
-rw-r--r--arch/arm/include/asm/pmu.h34
-rw-r--r--arch/arm/kernel/Makefile1
-rw-r--r--arch/arm/kernel/perf_event.c8
-rw-r--r--arch/arm/kernel/pmu.c36
6 files changed, 1 insertions, 87 deletions
diff --git a/MAINTAINERS b/MAINTAINERS
index fdc0119963e7..437a7dd36843 100644
--- a/MAINTAINERS
+++ b/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
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 6d6e18fee9fe..1d5ce138b877 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1179,12 +1179,6 @@ 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
@@ -1757,7 +1751,7 @@ 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
diff --git a/arch/arm/include/asm/pmu.h b/arch/arm/include/asm/pmu.h
index 40d7dff8bc30..05e0401d7697 100644
--- a/arch/arm/include/asm/pmu.h
+++ b/arch/arm/include/asm/pmu.h
@@ -49,40 +49,6 @@ struct arm_pmu_platdata {
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. */
diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index 7ad2d5cf7008..cfbe3b4d1d5e 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -69,7 +69,6 @@ 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
AFLAGS_iwmmxt.o := -Wa,-mcpu=iwmmxt
obj-$(CONFIG_ARM_CPU_TOPOLOGY) += topology.o
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
index 3aa338849133..1ac1531dcfef 100644
--- a/arch/arm/kernel/perf_event.c
+++ b/arch/arm/kernel/perf_event.c
@@ -377,7 +377,6 @@ armpmu_release_hardware(struct arm_pmu *armpmu)
}
pm_runtime_put_sync(&pmu_device->dev);
- release_pmu(armpmu->type);
}
static int
@@ -391,12 +390,6 @@ armpmu_reserve_hardware(struct arm_pmu *armpmu)
if (!pmu_device)
return -ENODEV;
- err = reserve_pmu(armpmu->type);
- if (err) {
- pr_warning("unable to reserve pmu\n");
- return err;
- }
-
plat = dev_get_platdata(&pmu_device->dev);
if (plat && plat->handle_irq)
handle_irq = armpmu_platform_irq;
@@ -706,7 +699,6 @@ static void __init cpu_pmu_init(struct arm_pmu *armpmu)
raw_spin_lock_init(&events->pmu_lock);
}
armpmu->get_hw_events = armpmu_get_cpu_events;
- armpmu->type = ARM_PMU_DEVICE_CPU;
}
/*
diff --git a/arch/arm/kernel/pmu.c b/arch/arm/kernel/pmu.c
deleted file mode 100644
index 2334bf8a650a..000000000000
--- a/arch/arm/kernel/pmu.c
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- * 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);