Linux 5.14's Perf Tooling Makes Preparations For Intel Alder Lake

Written by Michael Larabel in Linux Kernel on 5 July 2021 at 06:25 AM EDT. Add A Comment
The Linux kernel's tooling around the perf subsystem is the latest area seeing a lot of work for Intel's upcoming Alder Lake processors with a mix of high performance and low power processor cores.

The perf tooling updates for this new kernel cycle bring various hybrid processor handling improvements in working towards Intel's Alder Lake processors. This includes new file header additions around hybrid topology as well as supporting PMU prefixes for hybrid CPUs, among other changes for Alder Lake and future Intel hybrid processors.

Also on the Intel front with the perf tooling is now having Intel PT support for tracing KVM guests. Intel Processor Tracing support for KVM guests should help a lot in debugging. Also on the KVM front with this pull request is support for KVM MSRs with the perf kvm stat command.

More information on the perf tools changes for Linux 5.14 via this pull request.
Related News
About The Author
Michael Larabel

Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via

Popular News This Week