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SubjectRe: [PATCH v6 6/6] perf: ARM DynamIQ Shared Unit PMU support
On 22/08/17 12:17, Jonathan Cameron wrote:
> On Mon, 21 Aug 2017 18:55:09 +0100
> Suzuki K Poulose <> wrote:
>> Add support for the Cluster PMU part of the ARM DynamIQ Shared Unit (DSU).
>> The DSU integrates one or more cores with an L3 memory system, control
>> logic, and external interfaces to form a multicore cluster. The PMU
>> allows counting the various events related to L3, SCU etc, along with
>> providing a cycle counter.
>> The PMU can be accessed via system registers, which are common
>> to the cores in the same cluster. The PMU registers follow the
>> semantics of the ARMv8 PMU, mostly, with the exception that
>> the counters record the cluster wide events.
>> This driver is mostly based on the ARMv8 and CCI PMU drivers.
>> The driver only supports ARM64 at the moment. It can be extended
>> to support ARM32 by providing register accessors like we do in
>> arch/arm64/include/arm_dsu_pmu.h.
>> Cc: Mark Rutland <>
>> Cc: Will Deacon <>
>> Signed-off-by: Suzuki K Poulose <>
> Hi Suzuki,
> Was just reading this again out of curiosity and picked up on a couple of
> really trivial things. Nothing that should slow down a merge, but if you happen
> to be doing a v6...
> Driver looks good to me.
> Reviewed-by: Jonathan Cameron <>


Thanks for taking a look. I will fix those issues.


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