Re: [PATCH v2 1/5] perf/amd/ibs: Account interrupt for discarded samples

[Ravi Bangoria]

Hi Michael,

>> Add interrupt throttling accounting for below cases:
>>
>>   o IBS Op PMU: A software filter (in addition to the hardware filter)
>>     drops samples whose load latency is below the user-specified
>>     threshold.
>>
>>   o IBS Fetch PMU: Samples discarded due to the zero-RIP erratum (#1197).
>>
>> Although these samples are discarded, the NMI cost is still incurred, so
>> they should be counted for interrupt throttling.
>>
> 
> Maybe worth tagging
> 
> Fixes: 26db2e0c51fe83e1dd852c1321407835b481806e ("perf/x86/amd/ibs: Work around erratum #1197")
> Fixes: d20610c19b4a22bc69085b7eb7a02741d51de30e ("perf/amd/ibs: Add support for OP Load Latency Filtering")

Yes, makes sense.

Ingo / Peter, Please let me know if you want me to respin.

Thanks,
Ravi