Messages in this thread | | | Date | Sun, 12 Mar 2023 13:50:15 -0700 | Subject | Re: [RFC PATCH V2 2/9] perf: Extend ABI to support post-processing monotonic raw conversion | From | Andi Kleen <> |
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ersion. So the kernel internal mul/shift information has to be exposed. > Ugh. Well, I think perf may have made a bad API choice here, so I'm > still going to push back on exposting timekeeping internals to > userland.
It's not about the perf ABI.
The perf mmap mult/offset if for PT, which always has raw TSCs.
Without it the PT decoder couldn't supply wall clock time.
-Andi
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