Revision 5 as of 2011-10-20 20:25:51

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Release Note

Review of the current Ubuntu Kernel patch delta from upstream. This session will look at the current delta comprised of both patches to the core and the ubuntu specific drivers. The aim is to record what we are carrying, review the reasons for that component(s) to be carried, and recommend replacements, updates, cleanups, upstreaming etc of those components.


All patches and drivers carried in the Ubuntu delta are not automatically sync'd with the upstream kernel for various reasons. This places a maintenance burden on the Ubuntu kernel team. These patches and drivers must be regularly reviewed to determine if they are still needed, if they need updating to a later version, or if they are now ready for upstream acceptance. The purpose of this blueprint is to facilitate and record this review for the P cycle.

This review is based on the the latest Precise kernel 3.1.0-1.1 release (which was rebased onto upstream v3.1-rc10). The delta at this point is as follows:

# patches



patches on top of the v3.1-rc10 kernel


patches should be making their way upstream


SAUCE patches


debian commits (configuration updates and build machinary)


ubuntu/ driver patches


patches added then reverted (eg. 16 applied, then reverted)

Ubuntu Delta

Ubuntu Drivers

  1. UBUNTU: ubuntu: aufs -- Temporarily disable due to build failure
  2. UBUNTU: ubuntu: ndiswrapper -- remove netdev_priv macro
  3. UBUNTU: ubuntu: Yama - update calls to generic_permission() and inode->i_op->permission()

  4. UBUNTU: ubuntu: Yama: if an underlying filesystem provides a permissions op use it
  5. UBUNTU: ubuntu: overlayfs -- vfs: introduce clone_private_mount()
  6. UBUNTU: ubuntu: overlayfs -- vfs: export do_splice_direct() to modules
  7. UBUNTU: ubuntu: overlayfs -- vfs: add i_op->open()

  8. UBUNTU: ubuntu: AUFS -- update to 0e2bafab74f0d1463383faeb93f9fc5eb8c2c54e
  9. UBUNTU: ubuntu: dm-raid4-5 fix up build failure
  10. UBUNTU: ubuntu: nx-emu - i386: mmap randomization for executable mappings
  11. UBUNTU: ubuntu: nx-emu - i386: NX emulation
  12. UBUNTU: ubuntu: rfkill disable driver
  13. UBUNTU: ubuntu: omnibook disable driver
  14. UBUNTU: ubuntu: Yama - unconditionally chain to Yama LSM
  15. UBUNTU: ubuntu: Yama - add ptrace relationship tracking interface
  16. UBUNTU: ubuntu: Yama - create task_free security callback
  17. UBUNTU: ubuntu: Yama - LSM hooks
  18. UBUNTU: ubuntu: AUFS -- documentation on updating aufs2
  19. UBUNTU: ubuntu: AUFS -- clean up the aufs updater and BOM
  20. UBUNTU: ubuntu: AUFS -- update to c6b76974311efc5bf3eddf921cd015b6aae46935
  21. UBUNTU: ubuntu: AUFS -- aufs2-standalone.patch aufs2.1-39
  22. UBUNTU: ubuntu: AUFS -- aufs2-base.patch aufs2.1-39
  23. UBUNTU: ubuntu: AUFS -- update to 65835da20b77c98fb538c9114fc31f5de1328230
  24. UBUNTU: ubuntu: AUFS -- update to b1cee06249dfa0ab30951e7f06490a75c155b620
  25. UBUNTU: ubuntu: AUFS -- suppress benign plink warning messages
  26. UBUNTU: ubuntu: AUFS -- update to 806051bcbeec27748aae2b7957726a4e63ff308e
  27. UBUNTU: ubuntu: ndiswrapper -- fix interaction between packed and packed

  28. UBUNTU: ubuntu: iscsitarget -- follow changes to open_bdev_exclusive
  29. UBUNTU: ubuntu: AUFS -- update to c5021514085a5d96364e096dbd34cadb2251abfd
  30. UBUNTU: ubuntu: AUFS -- update aufs-update to track new locations of headers
  31. UBUNTU: ubuntu: iscsitarget -- convert NIPQUAD to %pI4
  32. UBUNTU: ubuntu: iscsitarget -- follow changes to semaphore initialisation
  33. UBUNTU: ubuntu: iscsitarget -- re-instate copy_io_context
  34. UBUNTU: ubuntu: ndiswrapper -- follow removal of the BKL and locked ioctl
  35. UBUNTU: ubuntu: ndiswrapper -- update BOM to match actual version
  36. UBUNTU: ubuntu: omnibook -- update BOM
  37. UBUNTU: ubuntu: dm-raid4-5 -- follow changes to bio flags
  38. UBUNTU: ubuntu: AUFS -- include the aufs_types.h file in linux-libc-headers
  39. UBUNTU: ubuntu: AUFS -- update to 097bf62d6f49619359d34bf17f242df38562489a
  40. UBUNTU: ubuntu: AUFS -- track changes to llseek in v2.6.37-rc1
  41. UBUNTU: ubuntu: AUFS -- track changes to work queue initialisation
  42. UBUNTU: ubuntu: AUFS -- update to aufs2.1-36-UNRELEASED-20101103
  43. UBUNTU: ubuntu: rtl8192se -- update to version 0017.0507.2010
  44. UBUNTU: ubuntu: iscsitarget -- version
  45. UBUNTU: ubuntu: AUFS -- add BOM and automated update script
  46. UBUNTU: ubuntu: AUFS -- aufs2 base patch for linux-2.6.34
  47. UBUNTU: ubuntu: iscsitarget -- version
  48. UBUNTU: ubuntu: rtl8192se -- update to version 0015.0127.2010
  49. UBUNTU: ubuntu: dm-raid4-5 -- update to compile with 2.6.34-rc4
  50. UBUNTU: ubuntu: dm-raid4-5 -- update to compile with 2.6.34-rc2
  51. UBUNTU: ubuntu: iscsitarget -- rename daddr inet_sock field
  52. UBUNTU: ubuntu: dm-raid4-5 -- update to compile with 2.6.33
  53. UBUNTU: ubuntu: rtl8192se -- version 2010-0115,0014
  54. UBUNTU: ubuntu: fsam7400: Depend on CHECK_SIGNATURE
  55. UBUNTU: ubuntu: dm-raid4-5: Depend on XOR_BLOCKS
  56. UBUNTU: ubuntu: onmibook -- Added missing BOM file
  57. UBUNTU: ubuntu: fsam7400 -- Cleanup Makefile
  58. UBUNTU: ubuntu: iscsitarget --- version 1.4.19
  59. UBUNTU: ubuntu: omnibook -- support Toshiba (HP) netbooks
  60. UBUNTU: UBUNTU: ubuntu: fsam7400 -- kill switch for Fujitsu Siemens Amilo M 7400
  61. UBUNTU: ubuntu: dm-raid-45 -- update to compile with 2.6.32
  62. UBUNTU: ubuntu: rfkill drivers -- version 1.3
  63. UBUNTU: ubuntu: ndiswrapper -- version 1.55
  64. UBUNTU: ubuntu: dm-raid45 -- version 2009.04.24 (2.6.30-rc3)
  65. UBUNTU: ubuntu: dm-raid4-5 -- (no-up) Export dm_disk function of device-mapper

Ubuntu Patches (not for upstream)

  1. UBUNTU: SAUCE: (no-up) Input: elantech - Add v3 hardware support
  2. UBUNTU: SAUCE: (no-up) Input: ALPS - Enable Intellimouse mode for Lenovo Zhaoyang E47
  3. UBUNTU: SAUCE: (no-up) Add support for Intellimouse Mode in ALPS touchpad on Dell E2 series Laptops
  4. UBUNTU: SAUCE: (no-up) vfs: Add a trace point in the mark_inode_dirty function
  5. UBUNTU: SAUCE: (no-up) add tracing for user initiated readahead requests
  6. UBUNTU: (no-up) add support for installed header files to ubuntu directory
  7. UBUNTU: (no-up): document the new ## scheme
  8. UBUNTU: (no-up) [Config] Note dropped SAUCE patches from 2.6.36 to 2.6.37
  9. UBUNTU: (no-up) more dropped patches
  10. UBUNTU: (no-up) Added dropped patch list
  11. UBUNTU: SAUCE: (no-up) ARM: Resetting power_mode to its original value.
  12. UBUNTU: SAUCE: (no-up) Modularize vesafb -- fix initialisation
  13. UBUNTU: SAUCE: (no-up) Stop ARM boards crashing when CUPS is loaded
  14. UBUNTU: SAUCE: (no-up) dma-mapping: Remove WARN_ON in dma_free_coherent
  15. UBUNTU: SAUCE: (no-up) cdrom -- default to not locking the tray when in use
  16. UBUNTU: SAUCE: (no-up) PM report driver and device suspend/resume times.
  17. UBUNTU: (no-up) arm -- enable ubuntu/ directory
  18. UBUNTU: SAUCE: (no-up) set /proc/acpi/video/*/DOS to 4 by default
  19. UBUNTU: SAUCE: (no-up) trace: add trace events for open(), exec() and uselib()
  20. UBUNTU: SAUCE: (no-up) raise the default console 'quiet' level to 2
  21. UBUNTU: SAUCE: (no-up) disable adding scsi headers to linux-libc-dev
  22. UBUNTU: SAUCE: (no-up) Sony laptop: Some Sony Vaia laptops do not enable wwan power by default.
  23. UBUNTU: SAUCE: (no-up) nbd: Change default partitions per device to 15
  24. UBUNTU: SAUCE: (no-up) swap: Add notify_swap_entry_free callback for compcache
  25. UBUNTU: SAUCE: (no-up) hostap: Change initial operation mode to managed (infra)
  26. UBUNTU: SAUCE: (no-up) version: Implement version_signature proc file.
  27. UBUNTU: SAUCE: (no-up) Modularize vesafb
  28. UBUNTU: ubuntu: dm-raid4-5 -- (no-up) Export dm_disk function of device-mapper
  29. UBUNTU: (no-up) fold down debian for ubuntu-oneiric v3.1-rc1 rebase

Ubuntu Patches (for review)

  1. Andy Whitcroft
    1. x86, mce: Make xeon75xx memory driver dependent on PCI
    2. x86, mce: Xeon75xx specific interface to get corrected memory error information
    3. x86, mce: Rename cpu_specific_poll to mce_cpu_specific_poll
    4. sched: tg->se->load should be initialised to tg->shares

    5. UBUNTU: SAUCE: vesafb: enable mtrr WC by default
    6. UBUNTU: SAUCE: vesafb: mtrr module parameter is uint, not bool
    7. UBUNTU: SAUCE: headers_install: fix #include "..." usage for userspace
    8. overlayfs: add statfs support
    9. UBUNTU: SAUCE: vt -- allow grub to request automatic vt_handoff
    10. UBUNTU: SAUCE: vt -- maintain bootloader screen mode and content until vt switch
    11. UBUNTU: SAUCE: ensure root is ready before running usermodehelpers in it
    12. Revert "mmc: fix all hangs related to mmc/sd card insert/removal during suspend/resume"
    13. UBUNTU: SAUCE: drm -- stop early access to drm devices
    14. UBUNTU: SAUCE: add option to hand off all kernel parameters to init
    15. UBUNTU: SAUCE: khubd -- switch USB product/manufacturer/serial handling to RCU
    16. UBUNTU: SAUCE: acpi battery -- move first lookup asynchronous
    17. UBUNTU: SAUCE: async_populate_rootfs: move rootfs init earlier
    18. UBUNTU: SAUCE: isapnp_init: make isa PNP scans occur async
    19. UBUNTU: SAUCE: hotkey quirks for various Zeptro Znote and Fujitsu Amilo laptops
    20. UBUNTU: SAUCE: Make populate_rootfs asynchronous
  2. Chase Douglas
    1. UBUNTU: SAUCE: HID: add MacBookAir4, 2 to hid_have_special_driver[]

    2. UBUNTU: SAUCE: HID: add support for MacBookAir4,2 keyboard.

  3. Colin Ian King
    1. UBUNTU: SAUCE: S3 early resume debug via keyboard LEDs
  4. Eric Miao
  5. Henrik Rydberg
    1. UBUNTU: SAUCE: HID: ntrig: fix suspend/resume on recent models
    2. UBUNTU: SAUCE: HID: hid-ntrig: add support for 1b96:0006 model
    3. hid: ntrig: Mask pen switch events
    4. hid: ntrig: Support single-touch devices
    5. UBUNTU: SAUCE: hid: ntrig: New ghost-filtering event logic
    6. UBUNTU: SAUCE: hid: ntrig: Setup input filtering manually
    7. UBUNTU: SAUCE: hid: ntrig: remove sysfs nodes
    8. UBUNTU: SAUCE: hid: ntrig: zero-initialize ntrig struct
    9. UBUNTU: SAUCE: hid: ntrig: Correct logic for quirks
    10. UBUNTU: SAUCE: hid: ntrig: Remove unused device ids
  6. Herton Ronaldo Krzesinski
    1. UBUNTU: SAUCE: Revert "Bluetooth: Add new PID for Atheros 3011"
  7. Ike Pan
    1. UBUNTU: SAUCE: (drop after 3.0) ideapad: Check if acpi already handle backlight power in 'ideapad_backlight_notify_power' to avoid a page fault
  8. Jesse Sung
    1. UBUNTU: SAUCE: Unregister input device only if it is registered
  9. John Johansen
    1. UBUNTU: SAUCE: Fix aufs calling of security_path_mknod
    2. UBUNTU: SAUCE: AppArmor: Fix unpack of network tables.

    3. AppArmor: compatibility patch for v5 interface

    4. AppArmor: compatibility patch for v5 network controll

    5. UBUNTU: SAUCE: Improve Amazon EBS performance for EC2
    6. UBUNTU: SAUCE: fix pv-ops for legacy Xen
    7. UBUNTU: SAUCE: AppArmor: Allow dfa backward compatibility with broken userspace

  10. Kamal Mostafa
    1. UBUNTU: SAUCE: omnibook: fix source file newline
    2. UBUNTU: SAUCE: rtl8192se: fix source file newline
    3. UBUNTU: SAUCE: rtl8192se: fix source file perms
  11. Keng-Yu Lin
    1. UBUNTU: SAUCE: staging: rts5139: add vmalloc.h to some files to fix the build.
    2. UBUNTU: SAUCE: staging: fix rts5139 depends & build

    3. UBUNTU: SAUCE: Staging: add driver for Realtek RTS5139 cardreader
  12. Leann Ogasawara
    1. overlay: overlay filesystem documentation
    2. overlayfs: implement show_options
    3. fs: limit filesystem stacking depth
    4. overlay filesystem
    5. UBUNTU: SAUCE: x86: reboot: Make Dell Latitude E6220 use reboot=pci
    6. UBUNTU: SAUCE: x86: reboot: Make Dell Optiplex 990 use reboot=pci
    7. UBUNTU: SAUCE: x86: reboot: Make Dell Optiplex 790 use reboot=pci
    8. UBUNTU: SAUCE: x86: reboot: Make Dell Latitude E6520 use reboot=pci
    9. UBUNTU: fix ERROR: devcgroup_inode_permission undefined

    10. UBUNTU: SAUCE: [arm] fixup aeabi_uldivmod undefined build error

    11. UBUNTU: Update dropped.txt for Oneiric
    12. UBUNTU: olpc_dcon_xo_1_5 needs delay.h
    13. UBUNTU: olpc_dcon_xo_1 needs delay.h
    14. UBUNTU: SAUCE: ndiswrapper: convert multicast list to list_head
    15. UBUNTU: SAUCE: ndiswrapper: rename usb_buffer_alloc() and usb_buffer_free()
  13. Manoj Iyer
    1. UBUNTU: SAUCE: enable rfkill for rtl8192se driver
    2. UBUNTU: SAUCE: Added quirk to recognize GE0301 3G modem as an interface.
  14. Mathieu J. Poirier
    1. UBUNTU: ARM: Adding regulator supply for vdds_sdi.
  15. Ming Lei
    1. UBUNTU: SAUCE: ata_piix: make DVD Drive recognisable on systems with Intel Sandybridge chipsets(v2)
    2. UBUNTU: SAUCE: fireware: add NO_MSI quirks for o2micro controller
    3. UBUNTU: SAUCE: fix yama_ptracer_del lockdep warning
  16. Ricardo Salveti de Araujo
    1. UBUNTU: SAUCE: omap3: beaglexm: fix DVI initialization
    2. UBUNTU: SAUCE: omap3: beagle: if rev unknown, assume xM revision C
    3. UBUNTU: SAUCE: omap3: beagle: detect new xM revision B
  17. Seth Forshee
    1. UBUNTU: SAUCE: (drop after 3.1) usb_storage: Don't freeze in usb-stor-scan
  18. Stefan Bader
    1. UBUNTU: SAUCE: xen: Do not use pv spinlocks on HVM
    2. UBUNTU: SAUCE: iscsitarget: Remove driver from the kernel
    3. UBUNTU: SAUCE: Convert dm-raid45 to new block plugging
  19. Tim Gardner
    1. UBUNTU: SAUCE: (drop during 3.2 merge) xHCI: AMD isoc link TRB chain bit quirk
    2. UBUNTU: SAUCE: usb/core/devio.c: Check for printer class specific request
    3. UBUNTU: SAUCE: Add a new entry (413c:8197) to Bluetooth USB device ID table
    4. UBUNTU: Remove ubuntu/rtl8192se
    5. UBUNTU: SAUCE: rtl8192se: Force a build for a 2.6/3.0 kernel
    6. UBUNTU: SAUCE: fix build error with CONFIG_BLK_DEV_INITRD=n
    7. UBUNTU: SAUCE: make ndiswrapper available on X86 only
    8. UBUNTU: SAUCE: Updated ndiswrapper to 1.56
  20. Will Drewry
    1. UBUNTU: SAUCE: seccomp_filter: add HAVE_SECCOMP_FILTER and seccomp_execve
    2. UBUNTU: SAUCE: seccomp_filter: Document what seccomp_filter is and how it works.
    3. UBUNTU: SAUCE: seccomp_filter: add process state reporting
    4. UBUNTU: SAUCE: seccomp_filter: new mode with configurable syscall filters

BoF agenda and discussion

Use this section to take notes during the BoF; if you keep it in the approved spec, use it for summarising what was discussed and note any options that were rejected.