Re: Real time

[Richard B. Johnson]

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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