On 18-09-24, 17:08, David Dai wrote: > Hi, > > This patch series is a continuation of the talk Saravana gave at LPC 2022 > titled "CPUfreq/sched and VM guest workload problems" [1][2][3]. The gist > of the talk is that workloads running in a guest VM get terrible task > placement and CPUfreq behavior when compared to running the same workload > in the host. Effectively, no EAS(Energy Aware Scheduling) for threads > inside VMs. This would make power and performance terrible just by running > the workload in a VM even if we assume there is zero virtualization > overhead. > David Dai (2): > dt-bindings: cpufreq: add virtual cpufreq device > cpufreq: add virtual-cpufreq driver > > .../cpufreq/qemu,virtual-cpufreq.yaml | 48 +++ > drivers/cpufreq/Kconfig | 14 + > drivers/cpufreq/Makefile | 1 + > drivers/cpufreq/virtual-cpufreq.c | 333 ++++++++++++++++++ > include/linux/arch_topology.h | 1 + > 5 files changed, 397 insertions(+) > create mode 100644 Documentation/devicetree/bindings/cpufreq/qemu,virtual-cpufreq.yaml > create mode 100644 drivers/cpufreq/virtual-cpufreq.c LGTM. Acked-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx> -- viresh
