ARM: 5899/2: arm: provide a mechanism to reserve performance counters

To add support for perf events and to allow the hardware counters to be
shared with oprofile, we need a way to reserve access to the pmu
(performance monitor unit). Platforms with PMU interrupts should
register the interrupts in arch/arm/kernel/pmu.c

Signed-off-by: Jamie Iles <jamie.iles@picochip.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 5 insertions, 0 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 233a222752c0..9e08891062bf 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -863,6 +863,11 @@ config XSCALE_PMU
         depends on CPU_XSCALE && !XSCALE_PMU_TIMER
         default y
 
+config CPU_HAS_PMU
+        depends on CPU_V6 || CPU_V7 || XSCALE_PMU
+        default y
+        bool
+
 if !MMU
 source "arch/arm/Kconfig-nommu"
 endif