New Intel / AMD Hardware Support Come With Linux 5.10 "Perf" Additions
Monday as the first full day of the Linux 5.10 merge window saw many Intel/AMD x86 changes and that continued with the performance events pull request sent out by Ingo Molnar later in the day.
New hardware coverage in the perf area includes:
- Support for Top-Down metrics on Ice Lake as new performance counters for CPU pipeline statistics around bottlenecks in the front-end / back-end / bad speculation / retiring and more. The Ice Lake top-down performance counters have been known since early 2019 but seemingly forgot about as the patches didn't get revived until recently for the Linux 5.10 merge window.
- The AMD RAPL (Run-Time Average Power Limiting) code for Zen/Zen2 has now been extended to work on Family 19h (Zen 3). There are also a number of AMD-specific perf fixes.
- Ice Lake and Tiger Lake uncore support has been fixed while also adding Snow Ridge support.
- Jasper Lake support within the Intel perf code for those CPUs with Tremont cores and Gen11 graphics for lower-end devices.
More details on the performance events updates via this pull request.
Add A Comment
