Date: Mon, 10 May 1999 08:09:43 +1000 From: Bruce Evans <bde@zeta.org.au> To: cvs-all@FreeBSD.org, cvs-committers@FreeBSD.org, peter@FreeBSD.org Subject: Re: cvs commit: src/sys/isa sio.c Message-ID: <199905092209.IAA24862@godzilla.zeta.org.au>
next in thread | raw e-mail | index | archive | help
> Modified files: > sys/isa sio.c > Log: > Optimize out a couple of places where com_addr() is used twice in a row, > although this is pretty trivial. devclass_get_softc() is a tad more > expensive than the old com_addr() implementation. If Bruce is really > worried about the cost of this, it could always be changed so that the > softc pointer is stored in a local array again. I'm not very worried about the cost. I'm worried about the invalid implementation. It is invalid to access data not managed by the driver from a fast interrupt handler. Bruce To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199905092209.IAA24862>