-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 10/22/2014 02:07 AM, Mike Turquette wrote: > arch_eval_cpu_freq and arch_scale_cpu_freq are added to allow the > scheduler to evaluate if cpu frequency should change and to invoke > that change from a safe context. > > They are weakly defined arch functions that do nothing by default. > A CPUfreq governor could use these functions to implement a > frequency scaling policy based on updates to per-task statistics or > updates to per-cpu utilization. > > As discussed at Linux Plumbers Conference 2014, the goal will be > to focus on a single cpu frequency scaling policy that works for > everyone. That may mean that the weak arch functions definitions > can be removed entirely and a single policy implements that logic > for all architectures.
On virtual machines, we probably want to use both frequency and steal time to calculate the factor. - -- All rights reversed -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAEBAgAGBQJUSA5XAAoJEM553pKExN6DeRYH/jeXImjO2/WZFp82Yv6ukMxI r8/kzrLMA+NS1XXCWYIcOiBqReEabkZZmypt21Tdnpkvi4GbZPpG0PEApSvOfqWE w71J87cpMGV/e4uLcBDcvgHJX8RBQLO/ZqDcMm+zcSoeJ3G3NMK2YlZp3Uf8xqcB tE2VGW7o2yEqNJL1fqYb++3upQmc10vIFqxVIJfP+TqZRyaVP+5kBqOMDTWb5qCV qZjBKe1jDX5sLLGfY0ddAeuUH1iEJBIUMCcr027ezcqRp4YoqIrHRInHmNxEs5Az 9PN8N0yGgqhvkcCfXG7He+tQBHECOnjyQlrM/2K8Cw11RziwDkC/yYIp3DPgjxc= =f/8V -----END PGP SIGNATURE----- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
