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Message-ID: <19586.1361839540@warthog.procyon.org.uk>
Date: Tue, 26 Feb 2013 00:45:40 +0000
From: David Howells <dhowells@...hat.com>
To: Bjorn Helgaas <bhelgaas@...gle.com>
Cc: dhowells@...hat.com, shuah.khan@...com,
Joerg Roedel <joro@...tes.org>, paulmck@...ux.vnet.ibm.com,
linasvepstas@...il.com, davej@...hat.com, tglx@...utronix.de,
mtk.manpages@...il.com, iommu@...ts.linux-foundation.org,
LKML <linux-kernel@...r.kernel.org>, linux-pci@...r.kernel.org,
shemminger@...tta.com, jiang.liu@...wei.com, wangyijing@...wei.com,
shuahkhan@...il.com
Subject: Re: [PATCH 1/4] pci: Add PCI_BUS() and PCI_DEVID() interfaces to return bus number and device id
Bjorn Helgaas <bhelgaas@...gle.com> wrote:
> David, can you point me at a description of include/uapi ... what is
> there and why, and how we should decide what new things go in
> include/uapi/linux/pci.h as opposed to include/linux/pci.h? Maybe
> there should be something in Documentation/?
Probably in CodingStyle, Submitting* or somewhere similar.
> I'm guessing it's something to do with being exported to userland, but
> I'm not sure the things in this patch (PCI_DEV_ID, PCI_BUS) are really
> exportable in the sense of being used for syscalls, etc.
As a rule, if it's in uapi/ then it's exported to userspace; if it's not, then
it isn't. The old headers where disintegrated along the lines of __KERNEL__
delimited sections by my scripts.
David
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