Re: repeat a function after fixed time period

[linux-os <linux-os@analogic.com>]

On Wed, 23 Mar 2005, sounak chakraborty wrote:
> --- linux-os <linux-os@analogic.com> wrote:
> > On Wed, 23 Mar 2005, Arjan van de Ven wrote:
> >
> > > On Wed, 2005-03-23 at 15:56 -0500, linux-os wrote:
> > > > > > static void start_timer(void)
> > > > > > {
> > > > > >      if(!atomic_read(&info->running))
> > > > > >      {
> > > > > >          atomic_inc(&info->running);
> > > > >
> > > > > same race.
> > > >
> > > > No such race at all.
> > >
> > > here there is one; you use add_timer() which isn't
> > allowed on running
> > > timers, only mod_timer() is. So yes there is a
> > race.
> > >
> >
> > Well add_timer() is only executed after the timer
> > has expired
> > or hasn't started yet so the "isn't allowed" is
> > pretty broad.
> > If I should use mod_timer(), then there are a _lot_
> > of buggy
> > drivers in the kernel because that's how a lot
> > repeat the
> > sequence. Will mod_timer() actually restart the
> > timer???
> >
> > If so, I'll change it and thank you for the help.
>
>
>   i have applied the code
> as i was intedded to call a function repeated ly in
> fork.c i written the code over there
> it compiled smoothly
> but while booting
> it is showing
> kernel panic no init found
> kjournal starting .commit interval after 5 seconds
>
> sounak

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Cheers,
Dick Johnson
Penguin : Linux version 2.6.11 on an i686 machine (5537.79 BogoMips).
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