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Message-ID: <ea8d860a0808131248g31ffb10g37b14dc8af89038c@mail.gmail.com> Date: Wed, 13 Aug 2008 20:48:19 +0100 From: "Marcin Obara" <marcin_obara@...rs.sourceforge.net> To: "Greg KH" <greg@...ah.com> Cc: linux-kernel@...r.kernel.org Subject: Re: [PATCH] Intel Management Engine Interface 2008/8/13 Greg KH <greg@...ah.com>: >> GET_VERSION is called frequently > > Why? Shouldn't it only be called once? Once per connection. But you can have many clients connecting. >> With ioctl - only one file handle is used, and userspace client logic >> is simpler. > > But the kernel is messier and we are trying to not add any more ioctls > to it. Especially for trivial things like the version number of the > hardware device. It's rather protocol version (=running software version) supported by hardware device. Hmmm, I just didn't know that there is something wrong with ioctls. >> Normal flow looks like: >> >> open >> ioctl(GET_VERSION) > > Great, do an additional open/read/close here for the version, I think > you will find it pretty trivial to do :) Right, it's trivial.... but will make userspace source code messier and bigger. Btw. I know we have powerful CPUs... but small wasting resources is still wasting resources... so we still need new CPUs :-). Regards Marcin -- 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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