On Mon, Feb 22, 2016 at 03:00:31PM +0700, Suravee Suthikulpanit wrote: > >So I really don't have time to review new muck while I'm hunting perf > >core fail, but Boris made me look at this. > > > >This is crazy, if you have multiple IOMMUs then create an event per > >IOMMU, do _NOT_ fold them all into a single event. > > These are system-wide events, which are programmed on every IOMMU the same > way. I am not sure what you meant by creating an event per IOMMU. Do you > mean I should create internal per-IOMMU struct perf_event for each event?
No, I meant to expose each IOMMU individually to userspace, as a separate device. Is there never a case to profile just one of the IOMMUs ?
