On 22-07-15, 01:15, Rafael J. Wysocki wrote:
> So the problem is that the cpu_is_offline(cpu) check in
> cpufreq_add_dev() matches two distinct cases: (1) the CPU was not
> present before and it is just being hot-added and (2) the CPU is
> initially offline, but present, and this is the first time
On 21-07-15, 03:14, Rafael J. Wysocki wrote:
> That said, cpu_present_mask may only be updated after calling
> arch_unregister_cpu(), so checking it in cpufreq_remove_dev() doesn't
> really help.
No, it is indeed useful. This is a snippet from the latest code we
have:
cpumask_copy
Back now, sorry for the delay ..
On 20-07-15, 11:36, Russell King - ARM Linux wrote:
> Why do we try to create the symlink for CPU devices which we haven't
> "detected" yet (iow, we haven't had cpufreq_add_dev() called for)?
> Surely we are guaranteed to have cpufreq_add_dev() called for every
> C
On Wednesday, July 22, 2015 03:56:21 AM Rafael J. Wysocki wrote:
> On Wednesday, July 22, 2015 01:15:01 AM Rafael J. Wysocki wrote:
> > Hi VIresh,
> >
> > On Mon, Jul 20, 2015 at 11:47 AM, Viresh Kumar
> > wrote:
> > > Consider a dual core (0/1) system with two CPUs:
> > > - sharing clock/voltag
On Wednesday, July 22, 2015 01:15:01 AM Rafael J. Wysocki wrote:
> Hi VIresh,
>
> On Mon, Jul 20, 2015 at 11:47 AM, Viresh Kumar
> wrote:
> > Consider a dual core (0/1) system with two CPUs:
> > - sharing clock/voltage rails and hence cpufreq-policy
> > - CPU1 is offline while the cpufreq driver
Hi VIresh,
On Mon, Jul 20, 2015 at 11:47 AM, Viresh Kumar wrote:
> Consider a dual core (0/1) system with two CPUs:
> - sharing clock/voltage rails and hence cpufreq-policy
> - CPU1 is offline while the cpufreq driver is registered
>
> - cpufreq_add_dev() is called from subsys callback for CPU0 a
On 20 July 2015 at 16:06, Russell King - ARM Linux
wrote:
> Why do we try to create the symlink for CPU devices which we haven't
> "detected" yet (iow, we haven't had cpufreq_add_dev() called for)?
> Surely we are guaranteed to have cpufreq_add_dev() called for every
> CPU which exists in sysfs?
On Tue, Jul 21, 2015 at 2:47 AM, Rafael J. Wysocki wrote:
> Hi Russell,
>
> On Mon, Jul 20, 2015 at 12:36 PM, Russell King - ARM Linux
> wrote:
>> On Mon, Jul 20, 2015 at 03:17:10PM +0530, Viresh Kumar wrote:
>>> Consider a dual core (0/1) system with two CPUs:
>>> - sharing clock/voltage rails a
Hi Russell,
On Mon, Jul 20, 2015 at 12:36 PM, Russell King - ARM Linux
wrote:
> On Mon, Jul 20, 2015 at 03:17:10PM +0530, Viresh Kumar wrote:
>> Consider a dual core (0/1) system with two CPUs:
>> - sharing clock/voltage rails and hence cpufreq-policy
>> - CPU1 is offline while the cpufreq driver
On Mon, Jul 20, 2015 at 03:17:10PM +0530, Viresh Kumar wrote:
> Consider a dual core (0/1) system with two CPUs:
> - sharing clock/voltage rails and hence cpufreq-policy
> - CPU1 is offline while the cpufreq driver is registered
>
> - cpufreq_add_dev() is called from subsys callback for CPU0 and w
Consider a dual core (0/1) system with two CPUs:
- sharing clock/voltage rails and hence cpufreq-policy
- CPU1 is offline while the cpufreq driver is registered
- cpufreq_add_dev() is called from subsys callback for CPU0 and we
create the policy for the CPUs and create link for CPU1.
- cpufreq_a
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