Messages in this thread | | | Subject | Re: [PATCH] detour TTY driver - now ttyprintk | From | Samo Pogacnik <> | Date | Sat, 26 Jun 2010 03:48:31 +0200 |
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> > +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
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