Re: [RFC PATCH 1/3] sched: add sched_policy and it's sysfs interface

[Alex Shi <alex.shi@intel.com>]

>> diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
>> index 6345294..5f6a573 100644
>> --- a/drivers/base/cpu.c
>> +++ b/drivers/base/cpu.c
>> @@ -330,4 +330,6 @@ void __init cpu_dev_init(void)
>>  		panic("Failed to register CPU subsystem");
>>  
>>  	cpu_dev_register_generic();
>> +
>> +	create_sysfs_sched_policy_group(cpu_subsys.dev_root);
> 
> Are you sure you didn't just race with userspace, creating the sysfs
> files after the device was created and announced to userspace?

Sorry for don't fully get you. Is the sysfs announced to userspace
just in 'mount -t sysfs sysfs /sys'?

The old powersaving interface: sched_smt_power_savings also
created here. and cpu_dev_init was called early before do_initcalls
which cpuidle/cpufreq sysfs were initialized.

Do you mean this line need to init as core_initcall?

Thanks for comments! :)
> 
> If so, you need to fix this :)
> 
> thanks,
> 
> greg k-h
> 


-- 
Thanks
    Alex