Re: help regarding software interrupts

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Thomas Petazzoni (thomas.petazzoni@xxxxxxxx) wrote:
> Hello,
> 
> Vijay Ram Chitrapu (RCVIJAYD) wrote:
> 
> >i was under an idea that software interrupts can be used to send 
> >some kind of signals to the user space asynchronously. Is it possible 
> >for a driver running in the kernel to generate a software interrupt 
> >asynchronously to the user such that the user is informed of some change 
> >in the kernel the driver is involved with? I am well aware of the fasync 
> >method of asynchronous notification..but want to know if this way of 
> >signalling is feasible or not?
> 
> Actually, I don't know what is the good (tm) solution to signal a 
> userspace process. I'm not sure sending a signal is a good idea. There 
> is inotify, but it's really designed for this. Really, I don't know.
> 
> Can you be more precise about the cases in which you need kernel->user 
> signaling ?
> 
> Sincerly,
> 
> Thomas

As Thomas say, be more precise, because inotify can be a solution, but
perhaps the question can study in a different way and things like
select(), ........ can be used to do what you want.

Perhaps I say too ugly mistakes :)

				- Christophe (clucas@xxxxxxxxxxxxx)

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