<p dir="ltr">great, How can I check if this running task is used or not.. I mean by not used that the task is running but not used by the user</p>
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On June 4, 2015 8:22:03 AM EDT, Mustafa Hussain <<a href="mailto:mustafa.hussain93@gmail.com">mustafa.hussain93@gmail.com</a>> wrote:<br>
>So I was just thinking about if i did this i can close apps that is<br>
>running<br>
>and user don't use them..<br>
>On 4 Jun 2015 14:59, "Nicholas Krause" <<a href="mailto:xerofoify@gmail.com">xerofoify@gmail.com</a>> wrote:<br>
><br>
That's not a idle task, that's a task in the<br>
TASK_INTERRUPTIBLE or TASK_RUNNING phase.<br>
Nick<br>
>><br>
>><br>
>> On June 4, 2015 7:56:30 AM EDT, Mustafa Hussain <<br>
>> <a href="mailto:mustafa.hussain93@gmail.com">mustafa.hussain93@gmail.com</a>> wrote:<br>
>> >All i am trying to do is to detect idle task and remove it from the<br>
>> >running<br>
>> >queue or deactivate it.<br>
>> There is no reason for that. The idle tasks are only ever scheduled<br>
>when<br>
>> there is no other processes able to<br>
>> run. So trying to remove them is a<br>
>> bad idea.<br>
>> Nick<br>
>> >Thank you for your patience :)<br>
>> >On 4 Jun 2015 14:51, "Nicholas Krause" <<a href="mailto:xerofoify@gmail.com">xerofoify@gmail.com</a>> wrote:<br>
>> ><br>
>> >><br>
>> >><br>
>> >> On June 4, 2015 3:35:25 AM EDT, Mustafa Hussain <<br>
>> >> <a href="mailto:mustafa.hussain93@gmail.com">mustafa.hussain93@gmail.com</a>> wrote:<br>
>> >> >System crashes, system can not start<br>
>> >> ><br>
>> >> I was not thinking and this schedules the idle thread. What are<br>
>you<br>
>> >trying<br>
>> >> to accomplish through.<br>
>> >> Nick<br>
>> >> ><br>
>> >> >On June 3, 2015 9:41:52 PM EDT, Mustafa Hussain<br>
>> >> ><<a href="mailto:mustafa.hussain93@gmail.com">mustafa.hussain93@gmail.com</a>><br>
>> >> >wrote:<br>
>> >> >>i want to dequeue the idle task how can i do this ?<br>
>> >> >Why there is no point. Clearly your asking questions in order to<br>
>> >learn<br>
>> >> >the<br>
>> >> >scheduler.<br>
>> >> >If your interested in learning it I can help but, you need to<br>
>> >think<br>
>> >> >about<br>
>> >> >what you<br>
>> >> > trying to accomplish first.<br>
>> >> >Nick<br>
>> >> ><br>
>> >> >>On Thu, Jun 4, 2015 at 3:40 AM, Mustafa Hussain<br>
>> >> >><<a href="mailto:mustafa.hussain93@gmail.com">mustafa.hussain93@gmail.com</a><br>
>> >> >>> wrote:<br>
>> >> >><br>
>> >> >>> Hi nick,<br>
>> >> >>> i applied your suggested edit and i got "bad: scheduling from<br>
>the<br>
>> >> >>idle<br>
>> >> >>> thread!"<br>
>> >> >>> how can i solve this ?<br>
>> >> >>><br>
>> >> >>> On Wed, Jun 3, 2015 at 12:29 AM, nick <<a href="mailto:xerofoify@gmail.com">xerofoify@gmail.com</a>><br>
>> >wrote:<br>
>> >> >>><br>
>> >> >>>><br>
>> >> >>>><br>
>> >> >>>> On 2015-06-02 06:25 PM, <a href="mailto:Valdis.Kletnieks@vt.edu">Valdis.Kletnieks@vt.edu</a> wrote:<br>
>> >> >>>> > On Tue, 02 Jun 2015 23:38:48 +0200, Mustafa Hussain said:<br>
>> >> >>>> ><br>
>> >> >>>> >>> /*Check if the pointer pointing to the idle class is<br>
>equal<br>
>> >to<br>
>> >> >>prev's<br>
>> >> >>>> >>> sched_class*/<br>
>> >> >>>> >>> if(prev->sched_class == idle)<br>
>> >> >>>> >>> After this condition you can just:<br>
>> >> >>>> >>> printk(KERN_INFO "Prev is equal to idle_sched_class,now<br>
>> >running<br>
>> >> >>the<br>
>> >> >>>> idle<br>
>> >> >>>> >>> sched_class\n");<br>
>> >> >>>> ><br>
>> >> >>>> > Hopefully, you didn't take Nick's advice without thinking<br>
>> >about<br>
>> >> >>it....<br>
>> >> >>>> ><br>
>> >> >>>> > As I type this, powertop tells me:<br>
>> >> >>>> ><br>
>> >> >>>> > Summary: 821.8 wakeups/second, 0.0 GPU ops/seconds, 0.0<br>
>VFS<br>
>> >> >>ops/sec<br>
>> >> >>>> and 18.8% CPU use<br>
>> >> >>>> ><br>
>> >> >>>> > That printk is going to spam your dmesg pretty hard.<br>
>> >> >>>> ><br>
>> >> >>>> > A better question is:<br>
>> >> >>>> ><br>
>> >> >>>> > If prev is about to go idle, *what do you want to do*?<br>
>(Hint:<br>
>> >> >>newer<br>
>> >> >>>> > kernels already do a bunch of stuff when a cpu/core goes<br>
>idle,<br>
>> >> >you<br>
>> >> >>>> > probably want to make sure you're not working against<br>
>> >something<br>
>> >> >>here...)<br>
>> >> >>>> ><br>
>> >> >>>> I didn't account for rate limiting the debug messages, forgot<br>
>> >about<br>
>> >> >>that<br>
>> >> >>>> . :)<br>
>> >> >>>> I do agree his question is not the best but he wanted a<br>
>answer<br>
>> >so I<br>
>> >> >>>> decided<br>
>> >> >>>> to just give him a answer that works for his learning.<br>
>> >> >>>> Nick<br>
>> >> >>>><br>
>> >> >>><br>
>> >> >>><br>
>> >> ><br>
>> >> >--<br>
>> >> >Sent from my Android device with K-9 Mail. Please excuse my<br>
>brevity.<br>
>> >><br>
>> >> --<br>
>> >> Sent from my Android device with K-9 Mail. Please excuse my<br>
>brevity.<br>
>> >><br>
>><br>
>> --<br>
>> Sent from my Android device with K-9 Mail. Please excuse my brevity.<br>
>><br>
<br>
--<br>
Sent from my Android device with K-9 Mail. Please excuse my brevity.<br>
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