[Xenial/snapdragon] [pull req] Ubuntu-4.4.0-1011.11

[Paolo Pisati]

This pull contains a fix for a regression that was introduced in 4.4.0-1010.10,
config changes to accomodate zfs compilation, and a pick up of the latest
stability fixes from the qcom-lt 4.4 tree, including a fix for cpufreq-dt.

Patch 0001 "UBUNTU: [Config] PREEMPT_VOLUNTARY=y" align the config with generic
arm64 and avoid hitting a regression that was introduced in generic master via
this commit (and that we picked with the 4.4.0-1010.10):

444209c printk: set may_schedule for some of console_trylock() callers

If this commit is present, and the kernel is compiled with the PREEMPT_COUNT
option (as the snapdragon kernel was before this change), upon boot we are
presented with lots of:

...
[   12.261029] BUG: using smp_processor_id() in preemptible [00000000] code: systemd/1
[   12.267522] caller is debug_smp_processor_id+0x1c/0x28
[   12.275059] CPU: 1 PID: 1 Comm: systemd Not tainted 4.4.0-1010-snapdragon #10
[   12.280241] Hardware name: Qualcomm Technologies, Inc. APQ 8016 SBC (DT)
[   12.287792] Call trace:
[   12.294564] [<ffffffc00008ada0>] dump_backtrace+0x0/0x1b0
[   12.296734] [<ffffffc00008af74>] show_stack+0x24/0x30
[   12.302290] [<ffffffc0005763f8>] dump_stack+0xb0/0xe8
[   12.307325] [<ffffffc0005967d4>] check_preemption_disabled+0x114/0x118
[   12.312360] [<ffffffc0005967f4>] debug_smp_processor_id+0x1c/0x28
[   12.318784] [<ffffffc00013b168>] vprintk_emit+0x338/0x6d8
[   12.324948] [<ffffffc0002028c4>] printk_emit+0x98/0xc0
[   12.330326] [<ffffffc00013b650>] devkmsg_write+0xf0/0x140
[   12.335364] [<ffffffc00029a784>] do_iter_readv_writev+0x7c/0xc8
[   12.340833] [<ffffffc00029b00c>] do_readv_writev+0x19c/0x278
[   12.346560] [<ffffffc00029b1a4>] vfs_writev+0x4c/0x70
[   12.352464] [<ffffffc00029bfcc>] SyS_writev+0x6c/0x110
...

and an wrecked system.

Arm64 generic was not affected because it didn't have that option turned on, but
the regression is there too - we probably missed some patches during the cherry
pick of the above patch - see also http://bugs.launchpad.net/bugs/1534216.

Patch 0002-005 "UBUNTU: [Config] disable ..." disable debugging options that
were only useful during development and that prevented zfs to compile against
this kernel.

Patch 0006-0010 are the latest stable fixes from the qcom-lt 4.4 tree, in
particular the last two commits ("regulator: qcom_spmi: ...") fix an instability
(that could be triggered with stress-ng) in cpufreq-dt - see also
https://bugs.96boards.org/show_bug.cgi?id=305.

Patch 0011 "UBUNTU: [Config] INLINE_*_UNLOCK=y" is just an updateconfigs after
all the config changes.

Tested on my dragonboard, went through continuous stress test and multiple
stress-ng runs.

The following changes since commit 26bf76b56226026d6100180a5118ec4a207806af:

  UBUNTU: Ubuntu-4.4.0-1010.10 (2016-03-30 09:05:21 -0600)

are available in the git repository at:

  git://git.launchpad.net/~p-pisati/ubuntu/+source/linux 

for you to fetch changes up to 4781c1de851678021efce07bd91530defce5380d:

  UBUNTU: Ubuntu-4.4.0-1011.11 (2016-04-06 16:33:52 +0200)

----------------------------------------------------------------
Nicolas Dechesne (2):
      arm64: clean up defconfig with savedefconfig
      configs: add SPI_SPIDEV as module in distro.config

Paolo Pisati (8):
      UBUNTU: [Config] PREEMPT_VOLUNTARY=y
      UBUNTU: [Config] disable PROVE_LOCKING
      UBUNTU: [Config] disable DEBUG_LOCK_ALLOC
      UBUNTU: [Config] disable DEBUG_SPINLOCK
      UBUNTU: [Config] disable DEBUG_MUTEXES
      UBUNTU: [Config] INLINE_*_UNLOCK=y
      UBUNTU: Start new release
      UBUNTU: Ubuntu-4.4.0-1011.11

Srinivas Kandagatla (1):
      arm64: dts: apq8016-sbc: Add aliases to spi device.

Stephen Boyd (2):
      regulator: qcom_spmi: Add slewing delays for all SMPS types
      regulator: qcom_spmi: Only use selector based regulator ops

 arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi          |   2 +
 arch/arm64/configs/defconfig                       |  36 +---
 debian.snapdragon/abi/4.4.0-1009.9/abiname         |   1 -
 debian.snapdragon/abi/4.4.0-1010.10/abiname        |   1 +
 .../{4.4.0-1009.9 => 4.4.0-1010.10}/arm64/ignore   |   0
 .../arm64/ignore.modules                           |   0
 debian.snapdragon/changelog                        |  19 ++
 debian.snapdragon/config/config.common.ubuntu      |  30 ++-
 drivers/regulator/qcom_spmi-regulator.c            | 218 +++++++++++++--------
 kernel/configs/distro.config                       |   1 +
 10 files changed, 181 insertions(+), 127 deletions(-)
 delete mode 100644 debian.snapdragon/abi/4.4.0-1009.9/abiname
 create mode 100644 debian.snapdragon/abi/4.4.0-1010.10/abiname
 rename debian.snapdragon/abi/{4.4.0-1009.9 => 4.4.0-1010.10}/arm64/ignore (100%)
 rename debian.snapdragon/abi/{4.4.0-1009.9 => 4.4.0-1010.10}/arm64/ignore.modules (100%)

-- 
bye,
p.