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authorJamie Iles <jamie.iles@picochip.com>2010-02-02 20:25:44 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-02-12 17:25:54 +0000
commit1b8873a0c6ec511870c106c80b94658f857c47f2 (patch)
tree578c79e82435cf1325619087e283b52f7e511c51 /arch/arm/Kconfig
parent7ada189f5c8627662c23f49b3e68463f86fc511e (diff)
downloadlinux-2.6.34-ux500-1b8873a0c6ec511870c106c80b94658f857c47f2.tar.gz
ARM: 5902/4: arm/perfevents: implement perf event support for ARMv6
This patch implements support for ARMv6 performance counters in the Linux performance events subsystem. ARMv6 architectures that have the performance counters should enable HW_PERF_EVENTS to get hardware performance events support in addition to the software events. Note: only ARM Ltd ARM cores are supported. This implementation also provides an ARM PMU abstraction layer to allow ARMv7 and others to be supported in the future by adding new a 'struct arm_pmu'. Cc: Jean Pihet <jpihet@mvista.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Jamie Iles <jamie.iles@picochip.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/Kconfig')
-rw-r--r--arch/arm/Kconfig8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 74d1e767f0b..9fb91ce106b 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1174,6 +1174,14 @@ config HIGHPTE
depends on HIGHMEM
depends on !OUTER_CACHE
+config HW_PERF_EVENTS
+ bool "Enable hardware performance counter support for perf events"
+ depends on PERF_EVENTS && CPU_HAS_PMU && CPU_V6
+ default y
+ help
+ Enable hardware performance counter support for perf events. If
+ disabled, perf events will use software events only.
+
source "mm/Kconfig"
config LEDS