Re: 2.4.6 possible problem

[Richard B. Johnson]

On Tue, 17 Jul 2001, Alex Ivchenko wrote:

> Guys,
> 
> does anybody use interruptible_sleep_on_timeout(&wqhead, jiffies);
> under 2.4.6 ?
> It seems that after this call sleeping process is never rescheduled again.
> Am I doing something wrong in my driver?
> 
> 
> <10716>
> Knowing that wait queue was reorganized in 2.4 I declared queue head as:
> 
> static DECLARE_WAIT_QUEUE_HEAD(wqhead);
> 
> and then in ioctl routine
  ^^^^^^^^^^^^^^^^^^^^^^^^^ Hmm. Don't decare it again.

funct()
{
    size_t ticks;
    wait_queue_head_t wqhead;
    init_waitqueue_head(&wqhead);

    ticks = 1 * HZ;        /* For 1 second */
    while((ticks = interruptible_sleep_on_timeout(&wqhead, ticks)) > 0)
                  ;
}

That'd oughtta do it. You can skip the loop if you can stand a short
timeout.

Cheers,
Dick Johnson

Penguin : Linux version 2.4.1 on an i686 machine (799.53 BogoMips).

    I was going to compile a list of innovations that could be
    attributed to Microsoft. Once I realized that Ctrl-Alt-Del
    was handled in the BIOS, I found that there aren't any.