Re: [PATCH v4 0/5] Simplify hotplug/suspend handling

[Saravana Kannan]

On 10/16/2014 01:53 AM, Viresh Kumar wrote:
> On 25 July 2014 06:37, Saravana Kannan <skannan@xxxxxxxxxxxxxx> wrote:
> > Series of patchs to simplify policy/sysfs/kobj/locking handling across
> > suspend/resume
> >
> > The following have been tested so far on a 2x2 cluster environment:
> > - Boot with 2 cpus and no cpufreq driver.
> > - mod probe driver and see cpufreq sysfs files show up only for the 1st cluster.
> > - Online the rest of the 2 CPUs and have files show up correctly.
> > - rmmod the driver and see the files go away.
> > - modprobe again (or back and forth multiples times) and see it work.
> > - suspend/resume works as expected.
> > - When a cluster is offline, all read/writes to its sysfs files return an error
> >
> > v4
> > - Split it up into smaller patches
> > - Will handle physical CPU removal correctly
> > - Fixed earlier mistake of deleting code under !recover_policy
> > - Dropped some code refactor that reuses a lot of code between add/remove
> > - Dropped fix for exiting hotplug race with cpufreq driver probe/rmmod
> > - Dropped changes will come later once this series is acked.
>
> Hi Saravana,
>
> Any  updates on this? We might need some of this soon or should somebody
> else start working on this ?

Hey,

Sorry for the delay. Got side tracked with some commercial stuff. I'm 
still invested in finishing this up. I'll try to send out something 
within a week.

I did notice (didn't read mych) the "Locking issues with cpufreq and 
sysfs" thread. I think my patches should side step most of it.

Thanks,
Saravana

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