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SubjectRe: [PATCH v2 0/5] arm64: perf: Support for chained counters

On 29/05/18 11:55, Suzuki K Poulose wrote:
> This series adds support for counting PMU events using 64bit counters
> for arm64 PMU.
> The Arm v8 PMUv3 supports combining two adjacent 32bit counters
> (low even and hig odd counters) to count a given "event" in 64bit mode.
> This series adds the support for 64bit events in the core arm_pmu driver
> infrastructure and adds the support for armv8 64bit kernel PMU to use
> chained counters to count in 64bit mode. For CPU cycles, we use the cycle
> counter in 64bit mode, when requested. If the cycle counter is not available,
> we fall back to chaining the counters.
> Tested on Juno, Fast models. Applies on 4.17-rc4

For the series:

Reviewed-by: Julien Thierry <>

Julien Thierry

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