Re: Real time

[michael trimarchi]

Richard B. Johnson wrote:

> On Thu, 1 Jul 2004, michael trimarchi wrote:
>
>  
>
> > Hi,
> > I'm working on porting modular real time scheduler on linux layer ...
> > I'm using only kernel thread... Actually I dont't call the
> > kernel_thread(init, .... and I inizialize my scheduler and OS struct...
> > I schedule my kernel thread... I'm trying to use the printk in the
> > kernel_thread but sometimes I dont't having result on the console. The
> > console does't print my debug on screen... Is there an unburred printk?
> >
> > Best regards
> > Michael Trimarchi
> >
> >    
>
> You probably need to set up your kernel thread correctly. You should
> use:
> 	kernel_thread(your_thread, NULL, CLONE_FS|CLONE_FILES);
>
> your_thread(void *whatever)
> {
>    exit_files(current);
>    daemonize();
>    /.../ fix up signals, etc.
> }
>
> Without CLONE_FILES, the file-descriptors and handles ultimately
> used for printk() may not work.
>
> Cheers,
> Dick Johnson
> Penguin : Linux version 2.4.26 on an i686 machine (5570.56 BogoMips).
>            Note 96.31% of all statistics are fiction.
>
>
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>  
I use CLONE_KERNEL but in my body I dont't call exit_files and
demonize... I change the linux scheduler width my scheduler and I use
only the switch_to  for context_switch from a task to another... I have
a task descriptor with a pointer to the task_t * ... At this time I have
a linux task_t struct and my personal task struct...

Best regards
Michael



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