[LAU] Kernel 2.6.39

Natanael Olaiz nolaiz at gmail.com
Thu Jun 23 10:05:54 UTC 2011


Hi,

Rui Nuno Capela wrote:
> On 06/23/2011 07:17 AM, Ralf Mardorf wrote:
>>
>> I used the config from the self-build kernel 2.6.33.9-rt31 and run
>> oldconfig only to configure 2.6.39. I didn't make music until now using
>> this kernel. Yes, I wish to "emulate" the PREEMPT_RT, since common
>> PREEMPT only kernels never did, what I needed.
>>
>> What do I need to set?
>>
>> $ cat config-2.6.39.1 | grep PREEMPT
>> CONFIG_TREE_PREEMPT_RCU=y
>> CONFIG_PREEMPT_RCU=y
>> CONFIG_PREEMPT_NOTIFIERS=y
>> # CONFIG_PREEMPT_NONE is not set
>> # CONFIG_PREEMPT_VOLUNTARY is not set
>> CONFIG_PREEMPT=y
>>
>> IIUC this is correct?!
>>
>
> yes.
>
> and don't forget to add "threadirqs" to your kernel bootloader
> line--only then you'll get "rtirq" to do its magic as it used to do on
> a genuine -rt kernel.
>

I'm just setting up a new computer, and I also installed the same 2.6.39
kernel...
I guess that passing "threadirqs" as a kernel argument is equivalent to
have CONFIG_IRQ_FORCED_THREADING=y as a kernel option. Am I right?


Best regards,
Natanael.




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