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The following is a list of files and features that are going to be
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removed in the kernel source tree. Every entry should contain what
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exactly is going away, why it is happening, and who is going to be doing
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the work. When the feature is removed from the kernel, it should also
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be removed from this file.
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---------------------------
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What: devfs
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When: July 2005
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Files: fs/devfs/*, include/linux/devfs_fs*.h and assorted devfs
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function calls throughout the kernel tree
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Why: It has been unmaintained for a number of years, has unfixable
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races, contains a naming policy within the kernel that is
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against the LSB, and can be replaced by using udev.
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Who: Greg Kroah-Hartman <greg@kroah.com>
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---------------------------
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What: RAW driver (CONFIG_RAW_DRIVER)
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When: December 2005
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Why: declared obsolete since kernel 2.6.3
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O_DIRECT can be used instead
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Who: Adrian Bunk <bunk@stusta.de>
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---------------------------
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What: RCU API moves to EXPORT_SYMBOL_GPL
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When: April 2006
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Files: include/linux/rcupdate.h, kernel/rcupdate.c
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Why: Outside of Linux, the only implementations of anything even
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vaguely resembling RCU that I am aware of are in DYNIX/ptx,
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VM/XA, Tornado, and K42. I do not expect anyone to port binary
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drivers or kernel modules from any of these, since the first two
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are owned by IBM and the last two are open-source research OSes.
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So these will move to GPL after a grace period to allow
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people, who might be using implementations that I am not aware
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of, to adjust to this upcoming change.
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Who: Paul E. McKenney <paulmck@us.ibm.com>
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---------------------------
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What: IEEE1394 Audio and Music Data Transmission Protocol driver,
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Connection Management Procedures driver
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When: November 2005
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Files: drivers/ieee1394/{amdtp,cmp}*
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Why: These are incomplete, have never worked, and are better implemented
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in userland via raw1394 (see http://freebob.sourceforge.net/ for
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example.)
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Who: Jody McIntyre <scjody@steamballoon.com>
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---------------------------
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What: raw1394: requests of type RAW1394_REQ_ISO_SEND, RAW1394_REQ_ISO_LISTEN
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When: November 2005
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Why: Deprecated in favour of the new ioctl-based rawiso interface, which is
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more efficient. You should really be using libraw1394 for raw1394
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access anyway.
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Who: Jody McIntyre <scjody@steamballoon.com>
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---------------------------
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What: i2c sysfs name change: in1_ref, vid deprecated in favour of cpu0_vid
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When: November 2005
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Files: drivers/i2c/chips/adm1025.c, drivers/i2c/chips/adm1026.c
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Why: Match the other drivers' name for the same function, duplicate names
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will be available until removal of old names.
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Who: Grant Coady <gcoady@gmail.com>
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---------------------------
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What: PCMCIA control ioctl (needed for pcmcia-cs [cardmgr, cardctl])
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When: November 2005
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Files: drivers/pcmcia/: pcmcia_ioctl.c
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Why: With the 16-bit PCMCIA subsystem now behaving (almost) like a
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normal hotpluggable bus, and with it using the default kernel
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infrastructure (hotplug, driver core, sysfs) keeping the PCMCIA
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control ioctl needed by cardmgr and cardctl from pcmcia-cs is
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unnecessary, and makes further cleanups and integration of the
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PCMCIA subsystem into the Linux kernel device driver model more
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difficult. The features provided by cardmgr and cardctl are either
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handled by the kernel itself now or are available in the new
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pcmciautils package available at
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http://kernel.org/pub/linux/utils/kernel/pcmcia/
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Who: Dominik Brodowski <linux@brodo.de>
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---------------------------
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What: ip_queue and ip6_queue (old ipv4-only and ipv6-only netfilter queue)
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When: December 2005
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Why: This interface has been obsoleted by the new layer3-independent
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"nfnetlink_queue". The Kernel interface is compatible, so the old
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ip[6]tables "QUEUE" targets still work and will transparently handle
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all packets into nfnetlink queue number 0. Userspace users will have
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to link against API-compatible library on top of libnfnetlink_queue
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instead of the current 'libipq'.
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Who: Harald Welte <laforge@netfilter.org>
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