Re: Killing tasklet from interrupt

[Richard B. Johnson]

On Mon, 18 Mar 2002, Jean Tourrilhes wrote:

> 	Hi,
> 
> 	I'm trying to use tasklets and I've come across one problem. I
> need to kill a tasklet from a timer, and I wonder if it's legal.
> 
> 	Code :
> 	-> User close IrDA TSAP and goes away
> 		-> LSAP not clean, more work to do
> 			-> Schedule timer in one second
> 	-> Timer
> 		-> If LSAP clean and nothing to do
> 			-> Kill tasklet
> 			-> Destroy LSAP
> 		-> Else re-shedule timer
> 
> 	The tasklet is used in the Rx path, so may be scheduled after
> the user close the TSAP. The TSAP may interface to the socket code, to
> the TTY code, to the Ethernet code or the PPP code, so we are not even
> guaranteed that the TSAP closure is done from a user context (fun,
> fun, fun).
> 	To be fair, the timer API is much more versatile in that
> respect. What I think I need is a tasklet_try_kill()...
> 
> 	Regards,
> 
> 	Jean

You have the tasklet kill itself the next time it executes. Set some
flag so it knows it should give up its timer-slot and expire. The
interrupt sets the flag. It doesn't do anything else.

Cheers,
Dick Johnson

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