Re: interruptible_sleep_on() vs wait_event_interruptible()

[Christian Boon <chris.boon@xxxxxxxxx>]

Arjan van de Ven wrote:

>  
>
> > I dont care if it is depreceated or not. I just want to know why it is 
> > depreceated.
> >    
>
> it's deprecated because it can't be used without races... basically it's
> nearly impossible to use correctly!
>
>  
>
> > Did you have a look in the kernel-2.6.18 tree how many drivers still 
> > use interruptible_sleep_on() ?
> >    
>
> not that many that are actually used hopefully; they're ALL bugs, with
> maybe one or two exceptions who got lucky.
>
>  
and the race can happen between the test if the process should sleep and 
actually going to sleep?

Chris.


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