This is a continuation to "RFC: CPU frequency min as PM QoS param" patchset. This patchset adds CPU frequency maximum as a PM QoS parameter and modifies CPU frequncy core to enforce the limit. CPU frequency ceiling can be used to improve the energy efficiency of workloads that would cause the cpufreq governors to enforce an unnecessarily high operating point. In other words, CPU frequency maximum can act as an energy efficiency level request. Tested on Dell E6420 with the ACPI cpufreq driver against Ubuntu 3.2. Patches are against linux-next, compile tested. Antti P Miettinen (2): PM QoS: Add CPU frequency maximum as PM QoS param cpufreq: Enforce PM QoS maximum frequency drivers/cpufreq/cpufreq.c | 16 +++++++++++++--- include/linux/pm_qos.h | 2 ++ kernel/power/qos.c | 15 +++++++++++++++ 3 files changed, 30 insertions(+), 3 deletions(-) -- 1.7.4.1 _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/linux-pm
