Commit | Line | Data |
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1da177e4 LT |
1 | The following is a list of files and features that are going to be |
2 | removed in the kernel source tree. Every entry should contain what | |
3 | exactly is going away, why it is happening, and who is going to be doing | |
4 | the work. When the feature is removed from the kernel, it should also | |
5 | be removed from this file. | |
6 | ||
7 | --------------------------- | |
8 | ||
9 | What: devfs | |
10 | When: July 2005 | |
11 | Files: fs/devfs/*, include/linux/devfs_fs*.h and assorted devfs | |
12 | function calls throughout the kernel tree | |
13 | Why: It has been unmaintained for a number of years, has unfixable | |
14 | races, contains a naming policy within the kernel that is | |
15 | against the LSB, and can be replaced by using udev. | |
16 | Who: Greg Kroah-Hartman <greg@kroah.com> | |
17 | ||
18 | --------------------------- | |
19 | ||
98e7f294 AB |
20 | What: RAW driver (CONFIG_RAW_DRIVER) |
21 | When: December 2005 | |
22 | Why: declared obsolete since kernel 2.6.3 | |
23 | O_DIRECT can be used instead | |
24 | Who: Adrian Bunk <bunk@stusta.de> | |
25 | ||
26 | --------------------------- | |
27 | ||
aafda4e0 AB |
28 | What: drivers that were depending on OBSOLETE_OSS_DRIVER |
29 | (config options already removed) | |
30 | When: before 2.6.19 | |
cecd1ca0 AB |
31 | Why: OSS drivers with ALSA replacements |
32 | Who: Adrian Bunk <bunk@stusta.de> | |
33 | ||
34 | --------------------------- | |
35 | ||
66cf8f14 PM |
36 | What: RCU API moves to EXPORT_SYMBOL_GPL |
37 | When: April 2006 | |
38 | Files: include/linux/rcupdate.h, kernel/rcupdate.c | |
39 | Why: Outside of Linux, the only implementations of anything even | |
40 | vaguely resembling RCU that I am aware of are in DYNIX/ptx, | |
41 | VM/XA, Tornado, and K42. I do not expect anyone to port binary | |
42 | drivers or kernel modules from any of these, since the first two | |
43 | are owned by IBM and the last two are open-source research OSes. | |
44 | So these will move to GPL after a grace period to allow | |
45 | people, who might be using implementations that I am not aware | |
46 | of, to adjust to this upcoming change. | |
47 | Who: Paul E. McKenney <paulmck@us.ibm.com> | |
a1446c7f JM |
48 | |
49 | --------------------------- | |
50 | ||
a1446c7f JM |
51 | What: raw1394: requests of type RAW1394_REQ_ISO_SEND, RAW1394_REQ_ISO_LISTEN |
52 | When: November 2005 | |
53 | Why: Deprecated in favour of the new ioctl-based rawiso interface, which is | |
54 | more efficient. You should really be using libraw1394 for raw1394 | |
55 | access anyway. | |
56 | Who: Jody McIntyre <scjody@steamballoon.com> | |
937df8df GC |
57 | |
58 | --------------------------- | |
59 | ||
875c296b MCC |
60 | What: Video4Linux API 1 ioctls and video_decoder.h from Video devices. |
61 | When: July 2006 | |
62 | Why: V4L1 AP1 was replaced by V4L2 API. during migration from 2.4 to 2.6 | |
63 | series. The old API have lots of drawbacks and don't provide enough | |
64 | means to work with all video and audio standards. The newer API is | |
65 | already available on the main drivers and should be used instead. | |
66 | Newer drivers should use v4l_compat_translate_ioctl function to handle | |
67 | old calls, replacing to newer ones. | |
68 | Decoder iocts are using internally to allow video drivers to | |
69 | communicate with video decoders. This should also be improved to allow | |
70 | V4L2 calls being translated into compatible internal ioctls. | |
71 | Who: Mauro Carvalho Chehab <mchehab@brturbo.com.br> | |
72 | ||
73 | --------------------------- | |
74 | ||
24622efd AB |
75 | What: remove EXPORT_SYMBOL(insert_resource) |
76 | When: April 2006 | |
77 | Files: kernel/resource.c | |
78 | Why: No modular usage in the kernel. | |
79 | Who: Adrian Bunk <bunk@stusta.de> | |
80 | ||
81 | --------------------------- | |
82 | ||
bf45d9b0 DB |
83 | What: PCMCIA control ioctl (needed for pcmcia-cs [cardmgr, cardctl]) |
84 | When: November 2005 | |
85 | Files: drivers/pcmcia/: pcmcia_ioctl.c | |
86 | Why: With the 16-bit PCMCIA subsystem now behaving (almost) like a | |
87 | normal hotpluggable bus, and with it using the default kernel | |
88 | infrastructure (hotplug, driver core, sysfs) keeping the PCMCIA | |
89 | control ioctl needed by cardmgr and cardctl from pcmcia-cs is | |
90 | unnecessary, and makes further cleanups and integration of the | |
91 | PCMCIA subsystem into the Linux kernel device driver model more | |
92 | difficult. The features provided by cardmgr and cardctl are either | |
93 | handled by the kernel itself now or are available in the new | |
94 | pcmciautils package available at | |
95 | http://kernel.org/pub/linux/utils/kernel/pcmcia/ | |
96 | Who: Dominik Brodowski <linux@brodo.de> | |
7af4cc3f HW |
97 | |
98 | --------------------------- | |
99 | ||
100 | What: ip_queue and ip6_queue (old ipv4-only and ipv6-only netfilter queue) | |
101 | When: December 2005 | |
102 | Why: This interface has been obsoleted by the new layer3-independent | |
103 | "nfnetlink_queue". The Kernel interface is compatible, so the old | |
104 | ip[6]tables "QUEUE" targets still work and will transparently handle | |
105 | all packets into nfnetlink queue number 0. Userspace users will have | |
106 | to link against API-compatible library on top of libnfnetlink_queue | |
107 | instead of the current 'libipq'. | |
108 | Who: Harald Welte <laforge@netfilter.org> | |
49705b77 CH |
109 | |
110 | --------------------------- | |
111 | ||
ac515898 CH |
112 | What: remove EXPORT_SYMBOL(kernel_thread) |
113 | When: August 2006 | |
114 | Files: arch/*/kernel/*_ksyms.c | |
115 | Why: kernel_thread is a low-level implementation detail. Drivers should | |
116 | use the <linux/kthread.h> API instead which shields them from | |
117 | implementation details and provides a higherlevel interface that | |
118 | prevents bugs and code duplication | |
119 | Who: Christoph Hellwig <hch@lst.de> | |
120 | ||
121 | --------------------------- | |
122 | ||
a9df3d0f IM |
123 | What: CONFIG_FORCED_INLINING |
124 | When: June 2006 | |
125 | Why: Config option is there to see if gcc is good enough. (in january | |
126 | 2006). If it is, the behavior should just be the default. If it's not, | |
127 | the option should just go away entirely. | |
128 | Who: Arjan van de Ven | |
129 | ||
130 | --------------------------- | |
131 | ||
e8a00334 N |
132 | What: START_ARRAY ioctl for md |
133 | When: July 2006 | |
134 | Files: drivers/md/md.c | |
135 | Why: Not reliable by design - can fail when most needed. | |
136 | Alternatives exist | |
137 | Who: NeilBrown <neilb@suse.de> | |
e0c9b797 RB |
138 | |
139 | --------------------------- | |
140 | ||
141 | What: au1x00_uart driver | |
142 | When: January 2006 | |
143 | Why: The 8250 serial driver now has the ability to deal with the differences | |
144 | between the standard 8250 family of UARTs and their slightly strange | |
145 | brother on Alchemy SOCs. The loss of features is not considered an | |
146 | issue. | |
147 | Who: Ralf Baechle <ralf@linux-mips.org> | |
b4b2c041 | 148 | |
c0d3c0c0 B |
149 | --------------------------- |
150 | ||
151 | What: eepro100 network driver | |
152 | When: January 2007 | |
153 | Why: replaced by the e100 driver | |
154 | Who: Adrian Bunk <bunk@stusta.de> | |
3c9b3a85 JG |
155 | |
156 | --------------------------- | |
157 | ||
051d9897 RK |
158 | What: pci_module_init(driver) |
159 | When: January 2007 | |
160 | Why: Is replaced by pci_register_driver(pci_driver). | |
161 | Who: Richard Knutsson <ricknu-0@student.ltu.se> and Greg Kroah-Hartman <gregkh@suse.de> | |
c5e3fbf2 JD |
162 | |
163 | --------------------------- | |
164 | ||
7d99b7d6 TG |
165 | What: Usage of invalid timevals in setitimer |
166 | When: March 2007 | |
167 | Why: POSIX requires to validate timevals in the setitimer call. This | |
168 | was never done by Linux. The invalid (e.g. negative timevals) were | |
169 | silently converted to more or less random timeouts and intervals. | |
170 | Until the removal a per boot limited number of warnings is printed | |
171 | and the timevals are sanitized. | |
172 | ||
173 | Who: Thomas Gleixner <tglx@linutronix.de> | |
174 | ||
175 | --------------------------- | |
176 | ||
c5e3fbf2 JD |
177 | What: I2C interface of the it87 driver |
178 | When: January 2007 | |
179 | Why: The ISA interface is faster and should be always available. The I2C | |
180 | probing is also known to cause trouble in at least one case (see | |
181 | bug #5889.) | |
182 | Who: Jean Delvare <khali@linux-fr.org> | |
fa675765 GKH |
183 | |
184 | --------------------------- | |
185 | ||
de62a97e CH |
186 | What: remove EXPORT_SYMBOL(tasklist_lock) |
187 | When: August 2006 | |
188 | Files: kernel/fork.c | |
189 | Why: tasklist_lock protects the kernel internal task list. Modules have | |
190 | no business looking at it, and all instances in drivers have been due | |
191 | to use of too-lowlevel APIs. Having this symbol exported prevents | |
192 | moving to more scalable locking schemes for the task list. | |
193 | Who: Christoph Hellwig <hch@lst.de> | |
194 | ||
195 | --------------------------- | |
196 | ||
fa675765 GKH |
197 | What: mount/umount uevents |
198 | When: February 2007 | |
199 | Why: These events are not correct, and do not properly let userspace know | |
200 | when a file system has been mounted or unmounted. Userspace should | |
201 | poll the /proc/mounts file instead to detect this properly. | |
202 | Who: Greg Kroah-Hartman <gregkh@suse.de> | |
cf028d17 RB |
203 | |
204 | --------------------------- | |
205 | ||
206 | What: Support for NEC DDB5074 and DDB5476 evaluation boards. | |
207 | When: June 2006 | |
208 | Why: Board specific code doesn't build anymore since ~2.6.0 and no | |
209 | users have complained indicating there is no more need for these | |
210 | boards. This should really be considered a last call. | |
211 | Who: Ralf Baechle <ralf@linux-mips.org> | |
b87ba0a3 GKH |
212 | |
213 | --------------------------- | |
214 | ||
215 | What: USB driver API moves to EXPORT_SYMBOL_GPL | |
216 | When: Febuary 2008 | |
217 | Files: include/linux/usb.h, drivers/usb/core/driver.c | |
218 | Why: The USB subsystem has changed a lot over time, and it has been | |
219 | possible to create userspace USB drivers using usbfs/libusb/gadgetfs | |
220 | that operate as fast as the USB bus allows. Because of this, the USB | |
221 | subsystem will not be allowing closed source kernel drivers to | |
222 | register with it, after this grace period is over. If anyone needs | |
223 | any help in converting their closed source drivers over to use the | |
224 | userspace filesystems, please contact the | |
225 | linux-usb-devel@lists.sourceforge.net mailing list, and the developers | |
226 | there will be glad to help you out. | |
227 | Who: Greg Kroah-Hartman <gregkh@suse.de> | |
228 | ||
229 | --------------------------- | |
93fac704 NP |
230 | |
231 | What: find_trylock_page | |
232 | When: January 2007 | |
233 | Why: The interface no longer has any callers left in the kernel. It | |
234 | is an odd interface (compared with other find_*_page functions), in | |
235 | that it does not take a refcount to the page, only the page lock. | |
236 | It should be replaced with find_get_page or find_lock_page if possible. | |
237 | This feature removal can be reevaluated if users of the interface | |
238 | cannot cleanly use something else. | |
239 | Who: Nick Piggin <npiggin@suse.de> | |
240 | ||
241 | --------------------------- |