Suzuki K Poulose e2da97d328 arm_pmu: Add support for 64bit event counters ...

Each PMU has a set of 32bit event counters. But in some
special cases, the events could be counted using counters
which are effectively 64bit wide.

e.g, Arm V8 PMUv3 has a 64 bit cycle counter which can count
only the CPU cycles. Also, the PMU can chain the event counters
to effectively count as a 64bit counter.

Add support for tracking the events that uses 64bit counters.
This only affects the periods set for each counter in the core
driver.

Cc: Will Deacon <[email protected]>
Reviewed-by: Julien Thierry <[email protected]>
Acked-by: Mark Rutland <[email protected]>
Signed-off-by: Suzuki K Poulose <[email protected]>
Signed-off-by: Will Deacon <[email protected]>

2018-07-10 18:19:02 +01:00

..

arm_pmu.h

arm_pmu: Add support for 64bit event counters

2018-07-10 18:19:02 +01:00