> > +static int tpk_write_room(struct tty_struct *tty)
> > +{
> > +   int ret = tpk_space;
> > +
> > +   /* allow char by char under max pressure */
> > +   if (tpk_space == 0)
> > +           tpk_space = 1;
> 
> That won't do what you think, the ldisc will keep seeing progress and
> generate millions of 1 byte I/Os in a loop !

I thought that this would automatically reduce processor load, which is
obviously not the case. Sorry for the delay, but i am trying to figure
out how to slow down write method when under pressure.

And that setting tpk_space to 1 would then be just in case we reach 0 to
enable further processing.

Samo


--
To unsubscribe from this list: send the line "unsubscribe linux-embedded" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Reply via email to