mirror of
https://github.com/torvalds/linux.git
synced 2026-10-07 22:37:45 -04:00
Suzuki K Poulose
e2da97d328
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]>