printf in interrupt handlers

[Jiri Gaisler]

Thanks. I printk works, after adding the BSP_output_char
routines to the sparc bsps. Once we sync up with rtems-4.6.2
and the cvs, we will submit a patch.

Jiri.

Ralf Corsepius wrote:
> On Thu, 2005-01-20 at 12:09 +0100, Jiri Gaisler wrote:
> 
>>Simple question: is printf in interrupt handlers allowed?
> 
> Simple answer: No.
> 
> More verbose: In general no, this doesn't work. In some (corner-) cases
> it works. If it can work, depends on various details of a port/BSP. If
> it works, in most cases, this is almost a random accident (or a smart
> design ;-) )
> 
> Rule of thumb: Use printk - printk is supposed to work in ISRs. If it
> doesn't, this would qualify as a bug.
> 
> Ralf
> 
> 
> .
> 

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