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Message-Id: <1262446824.3058.11.camel@palomino.walls.org> Date: Sat, 02 Jan 2010 10:40:24 -0500 From: Andy Walls <awalls@...ix.net> To: Daniel Borkmann <danborkmann@...glemail.com> Cc: Bartłomiej Zimoń <uzi18@...pl>, linux-kernel@...r.kernel.org Subject: Re: [suspend/resume] Re: userspace notification from module On Sat, 2010-01-02 at 16:15 +0100, Daniel Borkmann wrote: > Hi Bartłomiej, > > 2010/1/2 Bartłomiej Zimoń <uzi18@...pl> > > > > This looks like more simple and could be good, after all i think about sending this > > module here to add to kernel. So if this solution could be ok i will start to code this part. > > > > Question is now what signal to choose to not terminate process and to be compatible > > with rest of Linux kernel? > > Have a look at linux/signal.h. There's a section for non-POSIX > signals. May be you > could add a SIGSUS or sth similar into that list with a free signal > number to stay > compatible with the rest of the numbers. > > Cool thing is that you now will have a kind of "observer" principle: > Don't call us, we call you ;) Why not: a. write a module that implements a device node that supports poll(), and b. have a user space process select() on the fd for read or exception notification ? Regards, Andy > Cheers, > Daniel Borkmann -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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