On Thu, 21 Mar 2019, Rafael J. Wysocki wrote: > On Thu, Mar 21, 2019 at 8:58 AM Peter Zijlstra <[email protected]> wrote: > > > > On Thu, Mar 21, 2019 at 01:00:52AM +0100, Rafael J. Wysocki wrote: > > > + * The Performance and Energy Bias Hint (EPB) allows software to specify > > > its > > > + * preference with respect to the power-performance tradeoffs present in > > > the > > > + * processor. Generally, the EPB is expected to be set by user space > > > through > > > + * the generic MSR interface (with the help of the > > > x86_energy_perf_policy tool), > > > + * but there are two reasons for the kernel to touch it. > > > > So I hate /dev/msr with a passion. It is absolute atrocious crap. > > > > Please, just make a real interface for this if it is important. > > That's the plan going forward, this is just documenting the current situation. > > Do you have any particular concerns regarding this patch?
No. Acked-by: Thomas Gleixner <[email protected]>
