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Date:   Fri,  6 Jan 2017 10:43:52 +0100
From:   Nicolas Dichtel <nicolas.dichtel@...nd.com>
To:     arnd@...db.de
Cc:     mmarek@...e.com, linux-kbuild@...r.kernel.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-alpha@...r.kernel.org, linux-snps-arc@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org,
        adi-buildroot-devel@...ts.sourceforge.net,
        linux-c6x-dev@...ux-c6x.org, linux-cris-kernel@...s.com,
        uclinux-h8-devel@...ts.sourceforge.jp,
        linux-hexagon@...r.kernel.org, linux-ia64@...r.kernel.org,
        linux-m68k@...ts.linux-m68k.org, linux-metag@...r.kernel.org,
        linux-mips@...ux-mips.org, linux-am33-list@...hat.com,
        nios2-dev@...ts.rocketboards.org, openrisc@...ts.librecores.org,
        linux-parisc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-s390@...r.kernel.org, linux-sh@...r.kernel.org,
        sparclinux@...r.kernel.org, linux-xtensa@...ux-xtensa.org,
        linux-arch@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        netdev@...r.kernel.org, linux-media@...r.kernel.org,
        linux-mmc@...r.kernel.org, netfilter-devel@...r.kernel.org,
        coreteam@...filter.org, linux-nfs@...r.kernel.org,
        linux-raid@...r.kernel.org, linux-spi@...r.kernel.org,
        linux-mtd@...ts.infradead.org, linux-rdma@...r.kernel.org,
        fcoe-devel@...n-fcoe.org, alsa-devel@...a-project.org,
        linux-fbdev@...r.kernel.org, xen-devel@...ts.xenproject.org,
        airlied@...ux.ie, davem@...emloft.net
Subject: [PATCH v2 0/7] uapi: export all headers under uapi directories


Here is the v2 of this series. The first 5 patches are just cleanup: some
exported headers were still under a non-uapi directory.
The patch 6 was spotted by code review: there is no in-tree user of this
functionality.
The last patch remove the use of header-y. Now all files under an uapi
directory are exported.

asm is a bit special, most of architectures export asm/<arch>/include/uapi/asm
only, but there is two exceptions:
 - cris which exports arch/cris/include/uapi/arch-v[10|32];
 - tile which exports arch/tile/include/uapi/arch.
Because I don't know if the output of 'make headers_install_all' can be changed,
I introduce subdir-y in Kbuild file. The headers_install_all target copies all
asm/<arch>/include/uapi/asm to usr/include/asm-<arch> but
arch/cris/include/uapi/arch-v[10|32] and arch/tile/include/uapi/arch are not
prefixed (they are put asis in usr/include/). If it's acceptable to modify the
output of 'make headers_install_all' to export asm headers in
usr/include/asm-<arch>/asm, then I could remove this new subdir-y and exports
everything under arch/<arch>/include/uapi/.

Note also that exported files for asm are a mix of files listed by:
 - include/uapi/asm-generic/Kbuild.asm;
 - arch/x86/include/uapi/asm/Kbuild;
 - arch/x86/include/asm/Kbuild.
This complicates a lot the processing (arch/x86/include/asm/Kbuild is also
used by scripts/Makefile.asm-generic).

This series has been tested with a 'make headers_install' on x86 and a
'make headers_install_all'. I've checked the result of both commands.

This patch is built against linus tree. I don't know if it should be
made against antoher tree.

Comments are welcomed,
Nicolas

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