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Diffstat (limited to 'Documentation/feature-removal-schedule.txt')
| -rw-r--r-- | Documentation/feature-removal-schedule.txt | 116 |
1 files changed, 99 insertions, 17 deletions
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt index a0ffac029a0..ebaffe208cc 100644 --- a/Documentation/feature-removal-schedule.txt +++ b/Documentation/feature-removal-schedule.txt @@ -2,15 +2,14 @@ The following is a list of files and features that are going to be removed in the kernel source tree. Every entry should contain what exactly is going away, why it is happening, and who is going to be doing the work. When the feature is removed from the kernel, it should also -be removed from this file. +be removed from this file. The suggested deprecation period is 3 releases. --------------------------- -What: x86 floppy disable_hlt -When: 2012 -Why: ancient workaround of dubious utility clutters the - code used by everybody else. -Who: Len Brown <len.brown@intel.com> +What: ddebug_query="query" boot cmdline param +When: v3.8 +Why: obsoleted by dyndbg="query" and module.dyndbg="query" +Who: Jim Cromie <jim.cromie@gmail.com>, Jason Baron <jbaron@redhat.com> --------------------------- @@ -513,14 +512,97 @@ Who: Bjorn Helgaas <bhelgaas@google.com> ---------------------------- -What: The CAP9 SoC family will be removed -When: 3.4 -Files: arch/arm/mach-at91/at91cap9.c - arch/arm/mach-at91/at91cap9_devices.c - arch/arm/mach-at91/include/mach/at91cap9.h - arch/arm/mach-at91/include/mach/at91cap9_matrix.h - arch/arm/mach-at91/include/mach/at91cap9_ddrsdr.h - arch/arm/mach-at91/board-cap9adk.c -Why: The code is not actively maintained and platforms are now hard to find. -Who: Nicolas Ferre <nicolas.ferre@atmel.com> - Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> +What: Low Performance USB Block driver ("CONFIG_BLK_DEV_UB") +When: 3.6 +Why: This driver provides support for USB storage devices like "USB + sticks". As of now, it is deactivated in Debian, Fedora and + Ubuntu. All current users can switch over to usb-storage + (CONFIG_USB_STORAGE) which only drawback is the additional SCSI + stack. +Who: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> + +---------------------------- + +What: kmap_atomic(page, km_type) +When: 3.5 +Why: The old kmap_atomic() with two arguments is deprecated, we only + keep it for backward compatibility for few cycles and then drop it. +Who: Cong Wang <amwang@redhat.com> + +---------------------------- + +What: get_robust_list syscall +When: 2013 +Why: There appear to be no production users of the get_robust_list syscall, + and it runs the risk of leaking address locations, allowing the bypass + of ASLR. It was only ever intended for debugging, so it should be + removed. +Who: Kees Cook <keescook@chromium.org> + +---------------------------- + +What: Removing the pn544 raw driver. +When: 3.6 +Why: With the introduction of the NFC HCI and SHDL kernel layers, pn544.c + is being replaced by pn544_hci.c which is accessible through the netlink + and socket NFC APIs. Moreover, pn544.c is outdated and does not seem to + work properly with the latest Android stacks. + Having 2 drivers for the same hardware is confusing and as such we + should only keep the one following the kernel NFC APIs. +Who: Samuel Ortiz <sameo@linux.intel.com> + +---------------------------- + +What: setitimer accepts user NULL pointer (value) +When: 3.6 +Why: setitimer is not returning -EFAULT if user pointer is NULL. This + violates the spec. +Who: Sasikantha Babu <sasikanth.v19@gmail.com> + +---------------------------- + +What: remove bogus DV presets V4L2_DV_1080I29_97, V4L2_DV_1080I30 and + V4L2_DV_1080I25 +When: 3.6 +Why: These HDTV formats do not exist and were added by a confused mind + (that was me, to be precise...) +Who: Hans Verkuil <hans.verkuil@cisco.com> + +---------------------------- + +What: V4L2_CID_HCENTER, V4L2_CID_VCENTER V4L2 controls +When: 3.7 +Why: The V4L2_CID_VCENTER, V4L2_CID_HCENTER controls have been deprecated + for about 4 years and they are not used by any mainline driver. + There are newer controls (V4L2_CID_PAN*, V4L2_CID_TILT*) that provide + similar functionality. +Who: Sylwester Nawrocki <sylvester.nawrocki@gmail.com> + +---------------------------- + +What: cgroup option updates via remount +When: March 2013 +Why: Remount currently allows changing bound subsystems and + release_agent. Rebinding is hardly useful as it only works + when the hierarchy is empty and release_agent itself should be + replaced with conventional fsnotify. + +---------------------------- + +What: KVM debugfs statistics +When: 2013 +Why: KVM tracepoints provide mostly equivalent information in a much more + flexible fashion. + +---------------------------- + +What: at91-mci driver ("CONFIG_MMC_AT91") +When: 3.7 +Why: There are two mci drivers: at91-mci and atmel-mci. The PDC support + was added to atmel-mci as a first step to support more chips. + Then at91-mci was kept only for old IP versions (on at91rm9200 and + at91sam9261). The support of these IP versions has just been added + to atmel-mci, so atmel-mci can be used for all chips. +Who: Ludovic Desroches <ludovic.desroches@atmel.com> + +---------------------------- |