Mark Rutland b828f96021 ARM: 8611/1: l2x0: add PMU support ... The L2C-220 (AKA L220) and L2C-310 (AKA PL310) cache controllers feature a Performance Monitoring Unit (PMU), which can be useful for tuning and/or debugging. This hardware is always present and the relevant registers are accessible to non-secure accesses. Thus, no special firmware interface is necessary. This patch adds support for the PMU, plugging into the usual perf infrastructure. The overflow interrupt is not always available (e.g. on RealView PBX A9 it is not wired up at all), and the hardware counters saturate, so the driver does not make use of this. Instead, the driver periodically polls and reset counters as required to avoid losing events due to saturation. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Pawel Moll <pawel.moll@arm.com> Tested-by: Kim Phillips <kim.phillips@arm.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>		2016-09-06 15:51:09 +01:00
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asm	ARM: 8611/1: l2x0: add PMU support	2016-09-06 15:51:09 +01:00
debug	ARM: clps711x: Reduce static map size	2016-07-06 17:38:52 +02:00
uapi/asm	kvm arm/arm64: Remove trailing whitespace from headers	2016-07-12 15:20:36 -03:00