Re: RFC: Leave sysfs nodes alone during hotplug
[email protected] Tue, 8 Jul 2014 03:30:04 -0000
| Newsgroups | org.kernel.vger.cpufreq,org.infradead.lists.linux-arm-kernel,org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-pm |
|---|---|
| Message-ID | <[email protected]> |
Viresh Kumar wrote: > On 8 July 2014 04:10, Todd Poynor <[email protected]> wrote: >> For Android's usage we're also interested in both: >> >> 1. not removing and recreating the cpufreq sysfs files for a CPU on >> hotplug events (we currently use hotplug uevents to reset file >> ownership such that power policy can be controlled by non-root). >> >> 2. not resetting the contents of policy files such as scaling_max_freq >> (also fixed up from uevents) or stats files (we currently keep a >> separate persistent time_in_state for battery accounting purposes). > > So, we actually need to retain all the files. I will try to see this > separately. Will add it in my todo list. > Looks like there's enough interest. I'll also try to send out a patch of what I think a simplified CPUfreq should look like. -Saravana -- The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation