On Monday, February 04, 2013 05:08:50 PM Viresh Kumar wrote:
Currently, there can't be multiple instances of single governor_type. If we have a multi-package system, where we have multiple instances of struct policy (per package), we can't have multiple instances of same governor. i.e. We can't have multiple instances of ondemand governor for multiple packages.
Governors directory in sysfs is created at /sys/devices/system/cpu/cpufreq/ governor-name/. Which again reflects that there can be only one instance of a governor_type in the system.
This is a bottleneck for multicluster system, where we want different packages to use same governor type, but with different tunables.
This patchset is inclined towards fixing this issue.
Viresh Kumar (4): cpufreq: Don't check cpu_online(policy->cpu) cpufreq: stats: Get rid of CPUFREQ_STATDEVICE_ATTR cpufreq: Add per policy governor-init/exit infrastructure cpufreq: governor: Implement per policy instances of governors
Well, [1-2/4] are things I can take for v3.9 no problem. The other two I'd wait for the next cycle to be honest. We already have 30+ cpufreq patches scheduled for v3.9 and some of them quite subtle for that matter.
Thanks, Rafael