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| author | Jamie Iles <jamie.iles@picochip.com> | 2010-02-02 22:25:44 +0300 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-02-12 20:25:54 +0300 |
| commit | 1b8873a0c6ec511870c106c80b94658f857c47f2 (patch) | |
| tree | 578c79e82435cf1325619087e283b52f7e511c51 /arch/arm/Kconfig | |
| parent | 7ada189f5c8627662c23f49b3e68463f86fc511e (diff) | |
| download | linux-1b8873a0c6ec511870c106c80b94658f857c47f2.tar.xz | |
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/Kconfig | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 74d1e767f0b7..9fb91ce106bc 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 |