GitHub/moto-9609/android_kernel_motorola_exynos9610.git
8 years agoandroid,lowmemorykiller: Don't abuse TIF_MEMDIE.
Tetsuo Handa [Tue, 8 Mar 2016 11:01:32 +0000 (20:01 +0900)]
android,lowmemorykiller: Don't abuse TIF_MEMDIE.

Currently, lowmemorykiller (LMK) is using TIF_MEMDIE for two purposes.
One is to remember processes killed by LMK, and the other is to
accelerate termination of processes killed by LMK.

But since LMK is invoked as a memory shrinker function, there still
should be some memory available. It is very likely that memory
allocations by processes killed by LMK will succeed without using
ALLOC_NO_WATERMARKS via TIF_MEMDIE. Even if their allocations cannot
escape from memory allocation loop unless they use ALLOC_NO_WATERMARKS,
lowmem_deathpending_timeout can guarantee forward progress by choosing
next victim process.

On the other hand, mark_oom_victim() assumes that it must be called with
oom_lock held and it must not be called after oom_killer_disable() was
called. But LMK is calling it without holding oom_lock and checking
oom_killer_disabled. It is possible that LMK calls mark_oom_victim()
due to allocation requests by kernel threads after current thread
returned from oom_killer_disabled(). This will break synchronization
for PM/suspend.

This patch introduces per a task_struct flag for remembering processes
killed by LMK, and replaces TIF_MEMDIE with that flag. By applying this
patch, assumption by mark_oom_victim() becomes true.

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Arve Hjonnevag <arve@android.com>
Cc: Riley Andrews <riandrews@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agoMerge tag 'iio-for-4.7a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio...
Greg Kroah-Hartman [Mon, 4 Apr 2016 19:31:05 +0000 (12:31 -0700)]
Merge tag 'iio-for-4.7a' of git://git./linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

First round of IIO new device support, features and cleanups for the 4.7 cycle.

New core support
* UV light modifier (for intensity)
* UV light index channel type.

New device support
* hp206c barometer and altimeter
  - new driver.
* mcp4131 potentiometer
  - new driver supporting lots of parts from Microchip.
* mma8452
  - FXLS8471Q support
- NXP LPC18XX SOC ADC
  - new driver.
- NXP LPC18XX SOC DAC
  - new driver.
- rockchip_saradc
  - support rk3399
* st accel
  - h3lis331dl support

Staging driver removals
* adis16204
  - obsolete part making it hard to get parts to test the driver in order
    to clean it up.
* adis16220
  - obsolete part making it hard to get the parts test the driver in order
    to clean it up.

Features
* core
  - convenience functions to claim / release direct access to the device.
    Makes more consistent handling of this corner easier. Used in ad7192 driver.
* ak8975
  - power regulator support.
* at91-sama5d2
  - differential channel support.
* mma8452
  - runtime pm support
  - drop device specific autosleep and use the runtime pm one instead.
* ms5611
  - DT bindings
  - oversampling ratio support

Cleanups and minor fixes
* MAINTAINERS
  - Peter got married - hence name change!

* Documentation
  - Fix a typo in in_proximity_raw description.
  - Add some missing docs for iio_buffer_access_funcs.

* Tools
  - update iio_event_monitor names to match new stuff.
  - make generic_buffer look for triggers ending in -trigger as we let these in
  for a number of drivers a long time back and now it is a fairly common
  option.

Drivers
* staging wide
  - convert bare unsigned usage to unsigned int to comply with coding style.
* non staging wide:
  - since boiler plate gpio handling of interrupts has been moved into the
   ACPI core we don't need to include gpio/consumer.h in a load of drivers so
   drop it.
* ad7606
  - fix an endian casting sparse warning.
* ak8975
  - fix a possible unitialized warning from gcc.
  - drop and unused field left over from earlier cleanups
  - fix a missing regulator_disable on exit.
* at91-sama5d2
  - typo and indentation
  - missing IOMEM dependency.
  - cleanup mode register usage by avoidling erasing whole thing when changing
  the sampling frequency.
* bmc150
  - use the core demux and available_scan_masks to simplify buffer handling
  - optimize the transfers in the trigger handler now we have a magic function
  to emulate bulk reads (under circumstances met here).  This matters with some
  rather dumb i2c adapters in particular.
  - use a single regmap_conf for all bus types as they were all the same.
* bmg160
  - use the core demux and available_scan_masks to simplify the buffer handling
  - optimize the transfers in the trigger handler now we have a magic funciton
  to emulate bulk rads (under circumstances met here).
  - drop gpio interrupt probing from the driver (ACPI) as now handled by the
  ACPI core.
* ina2xx-adc
  - update the CALIB register when RShunt changes.
  - fix scale for VShunt - in reality this error canceled out when used.
* isl29028
  - use regmap to retrieve the struct device instead of carrying a second
  copy of it around.
* kxcjk-1013
  - use core demux
  - optimize i2c transfers in the trigger handler.
* mcp4531
  - refactor to use a pointer to access model parameters instead of indexing
    into the array each time.
* mma8452
  - style fixes
  - avoid swtiching to active whenever the config changes
  - add missin i2c_device_id for mma8451
* mpu6050
  - fix possible NULL dereference.
  - fix the name / chip_id used when ACPI used (otherwise reports as NULL).
* ms5611
  - fix a missing regulator_disable that left the regulator on during removal.
* mxc4005
  - drop gpio interrupt handling for ACPI case from driver as the core now
  handles this case.
* st-sensors
  - note that there are only ever a maximum of 3 axis on current st-sensors
  so just allocate a fixed sized buffer big enough for that.
* tpl0102
  - change the i2c_check_functionality condition to bring it inline with other
    IIO users as EOPNOTSUPP.
* tsl2563
  - replace deprecated flush_scheduled_work

8 years agoiio: accel: bmc150: use common definition for regmap conf
Irina Tirdea [Tue, 29 Mar 2016 12:21:21 +0000 (15:21 +0300)]
iio: accel: bmc150: use common definition for regmap conf

bmc150_i2c_regmap_conf is defined three times (in bmc150-accel-core.c,
bmc150-accel-i2c.c and and bmc150-accel-spi.c), although the
definition is the same.

Use one common definition for bmc150_i2c_regmap_conf in all
included files.

Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
8 years agohp206c: Initial support for reading sensor values
Crestez Dan Leonard [Tue, 29 Mar 2016 16:14:27 +0000 (19:14 +0300)]
hp206c: Initial support for reading sensor values

Signed-off-by: Crestez Dan Leonard <leonard.crestez@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
8 years agoiio: Add channel for UV index
Peter Meerwald-Stadler [Sun, 20 Mar 2016 15:20:23 +0000 (16:20 +0100)]
iio: Add channel for UV index

UV index indicating strength of sunburn-producing ultraviolet (UV) radiation

Signed-off-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
8 years agoiio: Add modifier for UV light
Peter Meerwald-Stadler [Sun, 20 Mar 2016 15:20:22 +0000 (16:20 +0100)]
iio: Add modifier for UV light

Signed-off-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
8 years agoiio: ina2xx-adc: fix scale for VShunt
Marc Titinger [Fri, 11 Mar 2016 14:52:30 +0000 (15:52 +0100)]
iio: ina2xx-adc: fix scale for VShunt

The scale would result in uV instead of expected mV.
Mostly cosmetic, since the value of 'Power' was computed OK.

Signed-off-by: Marc Titinger <marc.titinger@baylibre.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
8 years agoiio:adc:at91-sama5d2: add support for differential conversions
Ludovic Desroches [Tue, 22 Mar 2016 16:08:46 +0000 (17:08 +0100)]
iio:adc:at91-sama5d2: add support for differential conversions

Add signed differential channels and update the voltage scale for
differential conversions.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
8 years agoiio:adc:at91-sama5d2: cleanup mode register use
Ludovic Desroches [Tue, 22 Mar 2016 16:08:45 +0000 (17:08 +0100)]
iio:adc:at91-sama5d2: cleanup mode register use

Do not erase previous configuration of the mode register when setting
the sampling frequency.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
8 years agoiio: potentiometer: add driver for Microchip MCP413X/414X/415X/416X/423X/424X/425X...
Slawomir Stepien [Wed, 23 Mar 2016 08:57:20 +0000 (09:57 +0100)]
iio: potentiometer: add driver for Microchip MCP413X/414X/415X/416X/423X/424X/425X/426X

The following functionalities are supported:
 - write, read from volatile memory

Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/22060b.pdf

Signed-off-by: Slawomir Stepien <sst@poczta.fm>
Reviewed-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
8 years agoStaging: iio: ad7606: Fix sparse endian warning
Ksenija Stanojevic [Wed, 23 Mar 2016 11:06:34 +0000 (12:06 +0100)]
Staging: iio: ad7606: Fix sparse endian warning

Fix following sparse warning:
warning: cast to restricted __be16

Signed-off-by: Ksenija Stanojevic <ksenija.stanojevic@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
8 years agoiio: buffer: add missing descriptions in iio_buffer_access_funcs
Luis de Bethencourt [Wed, 23 Mar 2016 12:34:41 +0000 (12:34 +0000)]
iio: buffer: add missing descriptions in iio_buffer_access_funcs

The members buffer_group and attrs of iio_buffer_access_funcs have no
descriptions for the documentation. Adding them.

Fixes: 08e7e0adaa17 ("iio: buffer: Allocate standard attributes in the core")
Signed-off-by: Luis de Bethencourt <luisbg@osg.samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
8 years agoiio: tools: make generic_buffer look for "-trigger"
Linus Walleij [Thu, 24 Mar 2016 08:39:14 +0000 (09:39 +0100)]
iio: tools: make generic_buffer look for "-trigger"

All the ST Sensors use the old "<foo>-trigger" rather than the
standard "<foo>-devN" new standard suffix for triggers. Now much
to do about it since it is ABI, but make the testing tools
recognize it too.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
8 years agoiio: remove gpio interrupt probing from drivers that use a single interrupt
Irina Tirdea [Thu, 24 Mar 2016 09:05:09 +0000 (11:05 +0200)]
iio: remove gpio interrupt probing from drivers that use a single interrupt

Commit 845c877009cf014b ("i2c / ACPI: Assign IRQ for devices that have
GpioInt automatically") automatically assigns the first ACPI GPIO
interrupt in client->irq, so we can remove the probing code from
drivers that use only one interrupt.

Commit 0f0796509c07c1c7 ("iio: remove gpio interrupt probing from drivers
that use a single interrupt") removes gpio interrupt probing from most
drivers. This patch cleans the remaining ones.

Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
8 years agoiio: remove unused gpio consumer.h include
Irina Tirdea [Thu, 24 Mar 2016 09:08:38 +0000 (11:08 +0200)]
iio: remove unused gpio consumer.h include

GPIO handling code has been removed from the drivers (since
this is now handled by the ACPI core) in commit 0f0796509c07 ("iio:
remove gpio interrupt probing from drivers that use a single interrupt").

Remove the include for linux/gpio/consumer.h since it is no longer
used.

Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
8 years agoiio: accel: kxcjk-1013: optimize i2c transfers in trigger handler
Adriana Reus [Thu, 24 Mar 2016 09:29:31 +0000 (11:29 +0200)]
iio: accel: kxcjk-1013: optimize i2c transfers in trigger handler

Some i2c busses (e.g.: Synopsys DesignWare I2C adapter) need to
enable/disable the bus at each i2c transfer and must wait for
the enable/disable to happen before sending the data.

When reading data in the trigger handler, the kxcjk-1013 accel driver
does one i2c transfer for each axis. This has an impact on the
frequency of the accelerometer at high sample rates due to additional
delays introduced by the i2c bus at each transfer.

Reading all axis values in one i2c transfer reduces the delays
introduced by the i2c bus. Uses i2c_smbus_read_i2c_block_data_or_emulated
that will fallback to reading each axis as a separate word in case i2c
block read is not supported.

Signed-off-by: Adriana Reus <adriana.reus@intel.com>
Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
8 years agoiio: accel: kxcjk-1013: use available_scan_masks
Adriana Reus [Thu, 24 Mar 2016 09:29:30 +0000 (11:29 +0200)]
iio: accel: kxcjk-1013: use available_scan_masks

Use available_scan_masks to allow the iio core to select
the data to send to userspace depending on which axes are
enabled, instead of doing this in the driver's interrupt
handler.

Signed-off-by: Adriana Reus <adriana.reus@intel.com>
Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
8 years agoiio: accel: bmg160: optimize transfers in trigger handler
Irina Tirdea [Thu, 24 Mar 2016 09:29:29 +0000 (11:29 +0200)]
iio: accel: bmg160: optimize transfers in trigger handler

Some i2c busses (e.g.: Synopsys DesignWare I2C adapter) need to
enable/disable the bus at each i2c transfer and must wait for
the enable/disable to happen before sending the data.

When reading data in the trigger handler, the bmg160 gyro driver does
one bus transfer for each axis. This has an impact on the frequency
of the accelerometer at high sample rates due to additional delays
introduced by the bus at each transfer.

Reading all axis values in one bus transfer reduces the delays
introduced by the bus.

Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
8 years agoiio: gyro: bmg160: use available_scan_masks
Irina Tirdea [Thu, 24 Mar 2016 09:29:28 +0000 (11:29 +0200)]
iio: gyro: bmg160: use available_scan_masks

Use available_scan_masks to allow the iio core to select
the data to send to userspace depending on which axes are
enabled, instead of doing this in the driver's interrupt
handler.

Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
8 years agoiio: accel: bmc150: optimize transfers in trigger handler
Irina Tirdea [Thu, 24 Mar 2016 09:29:27 +0000 (11:29 +0200)]
iio: accel: bmc150: optimize transfers in trigger handler

Some i2c busses (e.g.: Synopsys DesignWare I2C adapter) need to
enable/disable the bus at each i2c transfer and must wait for
the enable/disable to happen before sending the data.

When reading data in the trigger handler, the bmc150 accel driver does
one bus transfer for each axis. This has an impact on the frequency
of the accelerometer at high sample rates due to additional delays
introduced by the bus at each transfer.

Reading all axis values in one bus transfer reduces the delays
introduced by the bus.

Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
8 years agoiio: accel: bmc150: use available_scan_masks
Irina Tirdea [Thu, 24 Mar 2016 09:29:26 +0000 (11:29 +0200)]
iio: accel: bmc150: use available_scan_masks

Use available_scan_masks to allow the iio core to select
the data to send to userspace depending on which axes are
enabled, instead of doing this in the driver's interrupt
handler.

Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
8 years agoiio: potentiometer: mcp4531: use pointer to access model parameters
Slawomir Stepien [Thu, 24 Mar 2016 16:06:01 +0000 (17:06 +0100)]
iio: potentiometer: mcp4531: use pointer to access model parameters

Use const pointer to element from model configuration array rather then array
index, as it will not change anyway.

Signed-off-by: Slawomir Stepien <sst@poczta.fm>
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
8 years agostaging: dgnc: clean up dgnc_input function
Daeseok Youn [Thu, 31 Mar 2016 08:03:59 +0000 (17:03 +0900)]
staging: dgnc: clean up dgnc_input function

This is for fixing checkpatch.pl warning about
"Alignment should match open parenthesis" but if that is
fixed, code line is over 80 characters.
I think "ch->ch_rqueue + tail + i" could be declared once in
the begining of loop.

Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: dgnc: remove useless variables for saving tty's
Daeseok Youn [Thu, 31 Mar 2016 08:03:35 +0000 (17:03 +0900)]
staging: dgnc: remove useless variables for saving tty's

It doesn't need to save major number with variable.
And there are no use of these variables(dgnc_serial_major and
dgnc_transparent_print_major)

Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: unisys: visorbus: remove unnecessary poll_count logic
Tim Sell [Thu, 31 Mar 2016 03:06:08 +0000 (23:06 -0400)]
staging: unisys: visorbus: remove unnecessary poll_count logic

The use of poll_count is a vestige from long-ago testing, which is no
longer needed.  It is removed by this patch.

Signed-off-by: Tim Sell <Timothy.Sell@unisys.com>
Signed-off-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: lustre: libcfs: delete linux-mem.h
James Simmons [Thu, 31 Mar 2016 14:18:40 +0000 (10:18 -0400)]
staging: lustre: libcfs: delete linux-mem.h

The header linux-mem.h is no longer needed.

Signed-off-by: James Simmons <uja.ornl@gmail.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6245
Reviewed-on: http://review.whamcloud.com/13841
Reviewed-by: frank zago <fzago@cray.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: lustre: libcfs: move NUM_CACHEPAGES to libcfs_prim.h
James Simmons [Thu, 31 Mar 2016 14:18:39 +0000 (10:18 -0400)]
staging: lustre: libcfs: move NUM_CACHEPAGES to libcfs_prim.h

We don't really need linux specific headers anymore so move
NUM_CACHEPAGES macro to libcfs_prim.h.

Signed-off-by: James Simmons <uja.ornl@gmail.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6245
Reviewed-on: http://review.whamcloud.com/13841
Reviewed-by: frank zago <fzago@cray.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: lustre: libcfs: remove MMSPACE macros
James Simmons [Thu, 31 Mar 2016 14:18:38 +0000 (10:18 -0400)]
staging: lustre: libcfs: remove MMSPACE macros

Another abstraction that is not needed.

Signed-off-by: James Simmons <uja.ornl@gmail.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6245
Reviewed-on: http://review.whamcloud.com/13841
Reviewed-by: frank zago <fzago@cray.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: lustre: libcfs: remove page_index() macro
James Simmons [Thu, 31 Mar 2016 14:18:37 +0000 (10:18 -0400)]
staging: lustre: libcfs: remove page_index() macro

Just use the index field directly for struct page.

Signed-off-by: James Simmons <uja.ornl@gmail.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6245
Reviewed-on: http://review.whamcloud.com/13841
Reviewed-by: frank zago <fzago@cray.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: lustre: libcfs: move memory_pressure functions to libcfs_prim.h
James Simmons [Thu, 31 Mar 2016 14:18:36 +0000 (10:18 -0400)]
staging: lustre: libcfs: move memory_pressure functions to libcfs_prim.h

Long ago libcfs_prim.h was used for userland code which is why
memory_pressure_*() handling is in both libcfs_prim.h and
linux-mem.h headers. So lets just move the memory_pressure_*()
to libcfs_prim.h.

Signed-off-by: James Simmons <uja.ornl@gmail.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6245
Reviewed-on: http://review.whamcloud.com/13841
Reviewed-by: frank zago <fzago@cray.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: lustre: libcfs: move add_wait_queue_exclusive_head to lustre layer
James Simmons [Thu, 31 Mar 2016 14:18:35 +0000 (10:18 -0400)]
staging: lustre: libcfs: move add_wait_queue_exclusive_head to lustre layer

Only lustre client uses add_wait_queue_exclusive_head() so move
it from libcfs layer to lustre_lib.h where it is needed.

Signed-off-by: James Simmons <uja.ornl@gmail.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6245
Reviewed-on: http://review.whamcloud.com/13874
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre: lov_io_init() should return error code
Bobi Jam [Wed, 30 Mar 2016 23:49:07 +0000 (19:49 -0400)]
staging/lustre: lov_io_init() should return error code

lov_io_init_empty/release() should returns error code instead of
true on error case.

Fault IO needs to handle restart in the case of accessing HSM released
file

Signed-off-by: Bobi Jam <bobijam.xu@intel.com>
Reviewed-on: http://review.whamcloud.com/17240
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-7446
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/ldlm: Solve a race for LRU lock cancel
Vitaly Fertman [Wed, 30 Mar 2016 23:49:06 +0000 (19:49 -0400)]
staging/lustre/ldlm: Solve a race for LRU lock cancel

This patch solves a race condition that the lock may be used again
after LRU cancellation policy check. In that case, the lock may have
locked or dirty pages that makes the policy check totally useless.
The problem is solved by checking l_last_used at cancellation time
therefore it can make sure that the lock has not been used.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Signed-off-by: Vitaly Fertman <vitaly_fertman@xyratex.com>
Reviewed-on: http://review.whamcloud.com/12603
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5781
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre: Fix spacing style before open parenthesis
Oleg Drokin [Wed, 30 Mar 2016 23:49:05 +0000 (19:49 -0400)]
staging/lustre: Fix spacing style before open parenthesis

This fixes the remaining occurences of checkpatch warnings
of the form of
WARNING: space prohibited between function name and open parenthesis '('

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/ldlm: restore the ELC for enqueue
Vitaly Fertman [Wed, 30 Mar 2016 23:49:04 +0000 (19:49 -0400)]
staging/lustre/ldlm: restore the ELC for enqueue

after LU-4300 enqueue does not ELC anymore, however if enqueue is
agressive (ls -la of a large dir) we may exceed lru-resize limit
quickly because LRUR shrinker and recalc are called not so often.

ELC is to be restored in enqueue.
ELC also should check for the lock weight, in addition to LRUR.
ELC can also keep "skipped" locks, i.e. once checked for the weight
and left in the lru - let LRUR take care about them later.
LRUR is to be left untouched, no weight logic, otherwise LU-5727
appears and OPEN locks do not get canceled.

Xyratex-bug-id: MRP-2550
Signed-off-by: Vitaly Fertman <vitaly.fertman@seagate.com>
Reviewed-on: http://review.whamcloud.com/14342
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6390
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: Niu Yawei <yawei.niu@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/ldlm: revert changes to ldlm_cancel_aged_policy()
Niu Yawei [Wed, 30 Mar 2016 23:49:03 +0000 (19:49 -0400)]
staging/lustre/ldlm: revert changes to ldlm_cancel_aged_policy()

The changes to ldlm_cancel_aged_policy() introduced from LU-4300
was incorrect. This patch revert this part of changes.

Signed-off-by: Niu Yawei <yawei.niu@intel.com>
Reviewed-on: http://review.whamcloud.com/12448
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5727
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/ldlm: ELC picks locks in a safer policy
Jinshan Xiong [Wed, 30 Mar 2016 23:49:02 +0000 (19:49 -0400)]
staging/lustre/ldlm: ELC picks locks in a safer policy

Change the policy of ELC to pick locks that have no dirty pages,
no page in writeback state, and no locked pages.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/9175
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4300
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/llite: Remove unused vui_local_lock field
Oleg Drokin [Wed, 30 Mar 2016 23:49:01 +0000 (19:49 -0400)]
staging/lustre/llite: Remove unused vui_local_lock field

vvp_io_setattr_lock is the only user that sets it, but it's
never checked anywhere, so could go away.
Also get rid of enum ccc_setattr_lock_type that becomes unused.

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/llite: Move several declarations to llite_internal.h
John Hammond [Wed, 30 Mar 2016 23:49:00 +0000 (19:49 -0400)]
staging/lustre/llite: Move several declarations to llite_internal.h

Move several declarations between llite_internal.h and vvp_internal.h
with the goal of reserving the latter header for functions that
pertain to vvp_{device,object,page,...}.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/13714
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5971
Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/llite: Move ll_dirent_type_get and make it static
Oleg Drokin [Wed, 30 Mar 2016 23:48:59 +0000 (19:48 -0400)]
staging/lustre/llite: Move ll_dirent_type_get and make it static

ll_dirent_type_get is only used in one place in llite/dir.c,
so move it there.

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/llite: Remove ccc_global_{init, fini}()
John Hammond [Wed, 30 Mar 2016 23:48:58 +0000 (19:48 -0400)]
staging/lustre/llite: Remove ccc_global_{init, fini}()

Merge their contents into vvp_global_{init,fini}() and
{init,exit}_lustre_lite().
Rename ccc_inode_fini_* to cl_inode_fini_*.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/13714
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5971
Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/llite: rename struct ccc_thread_info to vvp_thread_info
John Hammond [Wed, 30 Mar 2016 23:48:57 +0000 (19:48 -0400)]
staging/lustre/llite: rename struct ccc_thread_info to vvp_thread_info

struct ccc_thread_info is used in the VVP parts of llite so rename
it struct vvp_thread_info. Rename supporting functions accordingly.
Move init code from lcommon_cl.c to vvp_dev.c

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/13714
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5971
Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/llite: Rename struct vvp_thread_info to ll_thread_info
John Hammond [Wed, 30 Mar 2016 23:48:56 +0000 (19:48 -0400)]
staging/lustre/llite: Rename struct vvp_thread_info to ll_thread_info

struct vvp_thread_info is used in the non-VVP parts of llite so rename
it struct ll_thread_info. Rename supporting functions accordingly.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/13714
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5971
Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/llite: Rename struct ccc_grouplock to ll_grouplock
John Hammond [Wed, 30 Mar 2016 23:48:55 +0000 (19:48 -0400)]
staging/lustre/llite: Rename struct ccc_grouplock to ll_grouplock

And move the definition from vvp_internal.h to llite_internal.h.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/13714
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5971
Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/llite: rename ccc_req to vvp_req
John L. Hammond [Wed, 30 Mar 2016 23:48:54 +0000 (19:48 -0400)]
staging/lustre/llite: rename ccc_req to vvp_req

Rename struct ccc_req to struct vvp_req and move related functions
from lustre/llite/lcommon_cl.c to the new file lustre/llite/vvp_req.c.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Reviewed-on: http://review.whamcloud.com/13377
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5971
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/llite: move vvp_io functions to vvp_io.c
John L. Hammond [Wed, 30 Mar 2016 23:48:53 +0000 (19:48 -0400)]
staging/lustre/llite: move vvp_io functions to vvp_io.c

Move all vvp_io related functions from lustre/llite/lcommon_cl.c to
the sole file where they are used lustre/llite/vvp_io.c.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Reviewed-on: http://review.whamcloud.com/13376
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5971
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/llite: use vui prefix for struct vvp_io members
John L. Hammond [Wed, 30 Mar 2016 23:48:52 +0000 (19:48 -0400)]
staging/lustre/llite: use vui prefix for struct vvp_io members

Rename members of struct vvp_io to used to start with vui_ rather than
cui_.  Rename several instances of struct vvp_io * from cio to vio.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Reviewed-on: http://review.whamcloud.com/13363
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5971
Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/llite: merge ccc_io and vvp_io
John L. Hammond [Wed, 30 Mar 2016 23:48:51 +0000 (19:48 -0400)]
staging/lustre/llite: merge ccc_io and vvp_io

Move the contents of struct vvp_io into struct ccc_io, delete the
former, and rename the latter to struct vvp_io. Rename various ccc_io
related functions to use vvp rather than ccc.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Reviewed-on: http://review.whamcloud.com/13351
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5971
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre:llite: remove struct ll_ra_read
John L. Hammond [Wed, 30 Mar 2016 23:48:50 +0000 (19:48 -0400)]
staging/lustre:llite: remove struct ll_ra_read

Ever since removal of the the unused function ll_ra_read_get(),
the struct ll_ra_read members lrr_reader and lrr_linkage and
the struct ll_readahead_state member ras_read_beads unnecessary
so remove them.
In struct vvp_io replace the struct ll_ra_read cui_bead member with
cui_ra_start and cui_ra_count.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Reviewed-on: http://review.whamcloud.com/13347
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5971
Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/llite: rename ccc_lock to vvp_lock
John L. Hammond [Wed, 30 Mar 2016 23:48:49 +0000 (19:48 -0400)]
staging/lustre/llite: rename ccc_lock to vvp_lock

Rename struct ccc_lock to struct vvp_lock and merge the CCC lock
methods into the VVP lock methods.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Reviewed-on: http://review.whamcloud.com/13088
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5971
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/llite: rename ccc_page to vvp_page
John L. Hammond [Wed, 30 Mar 2016 23:48:48 +0000 (19:48 -0400)]
staging/lustre/llite: rename ccc_page to vvp_page

Rename struct ccc_page to struct vvp_page and remove obsolete CCC page
methods.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Reviewed-on: http://review.whamcloud.com/13086
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5971
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/llite: rename ccc_object to vvp_object
John L. Hammond [Wed, 30 Mar 2016 23:48:47 +0000 (19:48 -0400)]
staging/lustre/llite: rename ccc_object to vvp_object

Rename struct ccc_object to struct vvp_object and merge the CCC object
methods into the VVP object methods.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Reviewed-on: http://review.whamcloud.com/13077
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5971
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/llite: rename ccc_device to vvp_device
John L. Hammond [Wed, 30 Mar 2016 23:48:46 +0000 (19:48 -0400)]
staging/lustre/llite: rename ccc_device to vvp_device

Rename struct ccc_device to struct vvp_device and merge the CCC device
methods into the VVP device methods.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Reviewed-on: http://review.whamcloud.com/13075
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5971
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/llite: merge lclient.h into llite/vvp_internal.h
John L. Hammond [Wed, 30 Mar 2016 23:48:45 +0000 (19:48 -0400)]
staging/lustre/llite: merge lclient.h into llite/vvp_internal.h

Move the definition of struct cl_client_cache to
lustre/include/cl_object.h and move the rest of
lustre/include/lclient.h in to lustre/llite/vvp_internal.h.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Reviewed-on: http://review.whamcloud.com/12592
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5971
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/llite: make sure we do cl_page_clip on the last page
Li Dongyang [Wed, 30 Mar 2016 23:48:44 +0000 (19:48 -0400)]
staging/lustre/llite: make sure we do cl_page_clip on the last page

When we are doing a partial IO on both first and last page,
the logic currently only call cl_page_clip on the first page, which
will end up with a incorrect i_size.

Signed-off-by: Li Dongyang <dongyang.li@anu.edu.au>
Reviewed-on: http://review.whamcloud.com/11630
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5552
Reviewed-by: Ian Costello <costello.ian@gmail.com>
Reviewed-by: Niu Yawei <yawei.niu@intel.com>
Reviewed-by: Li Xi <pkuelelixi@gmail.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/llite: deadlock for page write
Jinshan Xiong [Wed, 30 Mar 2016 23:48:43 +0000 (19:48 -0400)]
staging/lustre/llite: deadlock for page write

Writing thread already locked page #1, and then wait for the
Writeback bit of page #2;

Ptlrpc thread is composing a write RPC, so it sets Writeback on
page #2 and tries to lock page #1 to make it ready.

Deadlocked.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/9036
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4540
Reviewed-by: wangdi <di.wang@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/llite: clip page correctly for vvp_io_commit_sync
Jinshan Xiong [Wed, 30 Mar 2016 23:48:42 +0000 (19:48 -0400)]
staging/lustre/llite: clip page correctly for vvp_io_commit_sync

The original code was wrong which clipped page incorrectly for
partial pages started with zero.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/8531
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4201
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: wangdi <di.wang@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre: update comments after cl_lock simplification
Bobi Jam [Wed, 30 Mar 2016 23:48:41 +0000 (19:48 -0400)]
staging/lustre: update comments after cl_lock simplification

Update comments to reflect current cl_lock situations.

Signed-off-by: Bobi Jam <bobijam.xu@intel.com>
Reviewed-on: http://review.whamcloud.com/13137
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6046
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/clio: cl_lock simplification
Jinshan Xiong [Wed, 30 Mar 2016 23:48:40 +0000 (19:48 -0400)]
staging/lustre/clio: cl_lock simplification

In this patch, the cl_lock cache is eliminated. cl_lock is turned
into a cacheless data container for the requirements of locks to
complete the IO. cl_lock is created before I/O starts and destroyed
when the I/O is complete.

cl_lock depends on LDLM lock to fulfill lock semantics. LDLM lock
is attached to cl_lock at OSC layer. LDLM lock is still cacheable.

Two major methods are supported for cl_lock: clo_enqueue and
clo_cancel.  A cl_lock is enqueued by cl_lock_request(), which will
call clo_enqueue() methods for each layer to enqueue the lock.
At the LOV layer, if a cl_lock consists of multiple sub cl_locks,
each sub locks will be enqueued correspondingly. At OSC layer, the
lock enqueue request will tend to reuse cached LDLM lock; otherwise
a new LDLM lock will have to be requested from OST side.

cl_lock_cancel() must be called to release a cl_lock after use.
clo_cancel() method will be called for each layer to release the
resource held by this lock. At OSC layer, the reference count of LDLM
lock, which is held at clo_enqueue time, is released.

LDLM lock can only be canceled if there is no cl_lock using it.

Signed-off-by: Bobi Jam <bobijam.xu@intel.com>
Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/10858
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3259
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/clio: generalize cl_sync_io
Jinshan Xiong [Wed, 30 Mar 2016 23:48:39 +0000 (19:48 -0400)]
staging/lustre/clio: generalize cl_sync_io

To make cl_sync_io interfaces not just wait for pages, but to be
a generic synchronization mechanism.

Also remove cl_io_cancel that became not used.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/8656
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4198
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre: Remove struct ll_iattr
Oleg Drokin [Wed, 30 Mar 2016 23:48:38 +0000 (19:48 -0400)]
staging/lustre: Remove struct ll_iattr

This was a compat code from the time it had ia_attr_flags.
Instead convert all the cryptic callers that did
((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags into
direct access to op_data->op_attr_flags

This also makes lustre/include/linux/obd.h not needed anymore,
so remove it.

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/llite: remove some cl wrappers
John L. Hammond [Wed, 30 Mar 2016 23:48:37 +0000 (19:48 -0400)]
staging/lustre/llite: remove some cl wrappers

In llite remove the wrapper functions and macros:
  cl_i2info()
  cl_i2sbi()
  cl_iattr2fd()
  cl_inode_info
  cl_inode_mode()
  cl_inode_{a,m,c}time()
  cl_isize_{read,write,write_nolock}()

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Reviewed-on: http://review.whamcloud.com/12850
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-2675
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/obd: remove struct client_obd_lock
John L. Hammond [Wed, 30 Mar 2016 23:48:36 +0000 (19:48 -0400)]
staging/lustre/obd: remove struct client_obd_lock

Remove the definition of struct client_obd_lock and the functions
client_obd_list_{init,lock,unlock,done}(). Use spinlock_t for the
cl_{loi,lru}_list_lock members of struct client_obd and call
spin_{lock,unlock}() directly.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/lmv: remove lmv_init_{lock,unlock}()
John L. Hammond [Wed, 30 Mar 2016 23:48:35 +0000 (19:48 -0400)]
staging/lustre/lmv: remove lmv_init_{lock,unlock}()

In struct lmv_obd rename the init_mutex member to
lmv_init_mutex. Remove the compat macros lmv_init_{lock,unlock}() and
use mutex_{lock,unlock}(&lmv->lmv_init_mutex) instead.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Reviewed-on: http://review.whamcloud.com/12115
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-2675
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: James Simmons <uja.ornl@gmail.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/llite: remove lli_lvb
John L. Hammond [Wed, 30 Mar 2016 23:48:34 +0000 (19:48 -0400)]
staging/lustre/llite: remove lli_lvb

In struct ll_inode_info remove the struct ost_lvb lli_lvb member and
replace it with obd_time lli_{a,m,c}time. Rename ll_merge_lvb() to
ll_merge_attr(). Remove cl_merge_lvb() and replace calls to it with
calls to ll_merge_attr().

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Reviewed-on: http://review.whamcloud.com/12849
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-2675
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/clio: optimize read ahead code
Jinshan Xiong [Wed, 30 Mar 2016 23:48:33 +0000 (19:48 -0400)]
staging/lustre/clio: optimize read ahead code

It used to check each page in the readahead window is covered by
a lock underneath, now cpo_page_is_under_lock() provides @max_index
to help decide the maximum ra window. @max_index can be modified by
OSC to extend the maximum lock region, to align stripe boundary at
LOV, and to make sure the readahead region at least covers read
region at LLITE layer.

After this is done, usually readahead code calls
cpo_page_is_under_lock() for each stripe.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/8523
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3321
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/clio: remove stackable cl_page completely
Jinshan Xiong [Wed, 30 Mar 2016 23:48:32 +0000 (19:48 -0400)]
staging/lustre/clio: remove stackable cl_page completely

>From now on, cl_page becomes one to one mapping of vmpage.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/7895
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3321
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/osc: add weight function for DLM lock
Jinshan Xiong [Wed, 30 Mar 2016 23:48:31 +0000 (19:48 -0400)]
staging/lustre/osc: add weight function for DLM lock

Use weigh_ast to decide if a lock covers any pages.
In recovery, weigh_ast will be used to decide if a DLM read lock
covers any locked pages, or it will be canceled instead being
recovered.

The problem with the original implementation is that it attached
each osc_page to an osc_lock also changed lock state to add every
pages for readahead.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/7894
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3321
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/clio: add pages into writeback cache in batches
Jinshan Xiong [Wed, 30 Mar 2016 23:48:30 +0000 (19:48 -0400)]
staging/lustre/clio: add pages into writeback cache in batches

in ll_write_end(), instead of adding the page into writeback
cache directly, it will be held in a page list. After enough
pages have been collected, issue them all with cio_commit_async().

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/7893
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3321
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/obdclass: Add a preallocated percpu cl_env
Jinshan Xiong [Wed, 30 Mar 2016 23:48:29 +0000 (19:48 -0400)]
staging/lustre/obdclass: Add a preallocated percpu cl_env

This change adds support for a single preallocated cl_env per CPU
which can be used in circumstances where reschedule is not possible.
Currently this interface is only used by the ll_releasepage function.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Signed-off-by: Prakash Surya <surya1@llnl.gov>
Reviewed-on: http://review.whamcloud.com/8174
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3321
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/clio: collapse layer of cl_page
Jinshan Xiong [Wed, 30 Mar 2016 23:48:28 +0000 (19:48 -0400)]
staging/lustre/clio: collapse layer of cl_page

Move radix tree to osc layer to for performance improvement.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/7892
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3321
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/osc: to drop LRU pages with cl_lru_work
Jinshan Xiong [Wed, 30 Mar 2016 23:48:27 +0000 (19:48 -0400)]
staging/lustre/osc: to drop LRU pages with cl_lru_work

This way we can drop it async.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/7891
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3321
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/osc: Adjustment on osc LRU for performance
Jinshan Xiong [Wed, 30 Mar 2016 23:48:26 +0000 (19:48 -0400)]
staging/lustre/osc: Adjustment on osc LRU for performance

Add and discard pages from LRU in batch.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/7890
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3321
Reviewed-by: Niu Yawei <yawei.niu@intel.com>
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre: Reintroduce global env list
Jinshan Xiong [Wed, 30 Mar 2016 23:48:25 +0000 (19:48 -0400)]
staging/lustre: Reintroduce global env list

This reverts a patch that was merged before lustre client
was introduced into the stagign tree, so it's not in the history.

The performance dropped a lot when memory reclaim process kicked
in as ll_releasepage() was called to destroy lustre pages. It turned
out that big overhead to allocate cl_env and keys on the fly so we
have to revert this patch.

The original problem for the reverted patch would be solved in a
follow on patch instead.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/7888
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3321
Reviewed-by: Niu Yawei <yawei.niu@intel.com>
Reviewed-by: Lai Siyao <lai.siyao@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre: merge lclient/*.c into llite/
John L. Hammond [Wed, 30 Mar 2016 23:48:24 +0000 (19:48 -0400)]
staging/lustre: merge lclient/*.c into llite/

Separate lclient was necessary to be shared between
different client implementations, make no sense to have
them separate in Linux kernel.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Based-on: http://review.whamcloud.com/10171
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre: Get rid of CFS_PAGE_MASK
Oleg Drokin [Wed, 30 Mar 2016 23:48:23 +0000 (19:48 -0400)]
staging/lustre: Get rid of CFS_PAGE_MASK

CFS_PAGE_MASK is the same as PAGE_MASK, so get rid of it.

We are replacing it with PAGE_MASK instead of PAGE_CACHE_MASK
because PAGE_CACHE_* stuff is apparently going away.

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging/lustre/obdclass: limit lu_site hash table size
Oleg Drokin [Wed, 30 Mar 2016 23:48:22 +0000 (19:48 -0400)]
staging/lustre/obdclass: limit lu_site hash table size

Allocating a big hash table using the formula for osd
does not really work for clients. We will create new
hash table for each mount on a single client which is
a lot of memory more than expected.

This patch limits the hash table up to 8M which has
524288 entries

Signed-off-by: Li Dongyang <dongyang.li@anu.edu.au>
Reviewed-on: http://review.whamcloud.com/18048
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-7689
Reviewed-by: Fan Yong <fan.yong@intel.com>
Reviewed-by: Alex Zhuravlev <alexey.zhuravlev@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: xgifb: fix block comments
Clifton Barnes [Tue, 29 Mar 2016 22:12:40 +0000 (18:12 -0400)]
staging: xgifb: fix block comments

fix checkpatch.pl warning about 'Block comments use a trailing */ on a
separate line' and 'Block comments use * on subsequent lines'

Signed-off-by: Clifton Barnes <clifton.a.barnes@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: dgnc: fix Logical continuations.
Daeseok Youn [Tue, 29 Mar 2016 04:48:57 +0000 (13:48 +0900)]
staging: dgnc: fix Logical continuations.

fix checkpatch.pl warning about
'Logical continuations should be on the previous line'

Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: dgnc: fix 'line over 80 characters'
Daeseok Youn [Tue, 29 Mar 2016 04:48:31 +0000 (13:48 +0900)]
staging: dgnc: fix 'line over 80 characters'

fix checkpatch.pl warning about 'line over 80 characters'.
I just moved all line comment to above if statement.

Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: dgnc: remove parenthesis around the CONST |
Daeseok Youn [Tue, 29 Mar 2016 04:47:59 +0000 (13:47 +0900)]
staging: dgnc: remove parenthesis around the CONST |

remove parenthesis around the CONST | CONST.
It will be also fixed checkpatch.pl warning about
"Alignment should match open parenthesis" becasue
parenthesis were removed by this patch.

Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: dgnc: replace dgnc_offset_table with bit shift.
Daeseok Youn [Mon, 28 Mar 2016 04:54:15 +0000 (13:54 +0900)]
staging: dgnc: replace dgnc_offset_table with bit shift.

the dgnc_offset_table has a same value with (1 << port).
So I tried to replace dgnc_offset_table array with 1 << port.
And also there are redundant assignments(tmp and current_port)
inside while loop for checking uart port, and remove them.

Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: comedi: amplc_pci224: Prefer using the BIT macro
H Hartley Sweeten [Wed, 30 Mar 2016 19:00:29 +0000 (12:00 -0700)]
staging: comedi: amplc_pci224: Prefer using the BIT macro

Fix the checkpatch.pl issues by using the BIT macro and defining some
macros for the multi-bit fields.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: comedi: amplc_pci263: define the register map
H Hartley Sweeten [Wed, 30 Mar 2016 18:45:19 +0000 (11:45 -0700)]
staging: comedi: amplc_pci263: define the register map

For completeness, define the registers used by this driver and remove
the magic numbers.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: comedi: amplc_pci263: tidy up digital output subdevice init
H Hartley Sweeten [Wed, 30 Mar 2016 18:45:18 +0000 (11:45 -0700)]
staging: comedi: amplc_pci263: tidy up digital output subdevice init

For aesthetics, add some whitespace to the digital output subdevice
initialization.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: comedi: amplc_pci263: fix block comments
H Hartley Sweeten [Wed, 30 Mar 2016 18:45:17 +0000 (11:45 -0700)]
staging: comedi: amplc_pci263: fix block comments

Fix the checkpatch.pl issues:
WARNING: Block comments use * on subsequent lines

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: comedi: drivers: fix possible bug in comedi_handle_events()
H Hartley Sweeten [Wed, 30 Mar 2016 17:47:25 +0000 (10:47 -0700)]
staging: comedi: drivers: fix possible bug in comedi_handle_events()

This function assumes that the async subdevice has a cancel() function.
It looks like all the current comedi drivers implement a cancel() for
the async subdevices except for the dt2814 analog input usbdevice.

Fix comedi_handle_events() so it does not try to call a non-existent
cancel() function.

Add a dev_warn() to __comedi_device_postconfig_async() so that any new
driver authors will be reminded to implement the cancel().

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: comedi: drivers: tidy up insn_rw_emulate_bits()
H Hartley Sweeten [Wed, 30 Mar 2016 17:47:24 +0000 (10:47 -0700)]
staging: comedi: drivers: tidy up insn_rw_emulate_bits()

Tidy up this function and fix the checkpatch.pl issues:
WARNING: Prefer 'unsigned int' to bare use of 'unsigned'

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: comedi: c6xdigio: Prefer using the BIT macro
H Hartley Sweeten [Wed, 30 Mar 2016 19:34:53 +0000 (12:34 -0700)]
staging: comedi: c6xdigio: Prefer using the BIT macro

Fix the checkpatch.pl issues.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: comedi: amplc_pci230: Prefer kernel type 'u64' over 'uint64_t'
H Hartley Sweeten [Wed, 30 Mar 2016 19:19:22 +0000 (12:19 -0700)]
staging: comedi: amplc_pci230: Prefer kernel type 'u64' over 'uint64_t'

Fix the checkpatch.pl issues.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: comedi: amplc_pci230: Prefer using the BIT macro
H Hartley Sweeten [Wed, 30 Mar 2016 19:19:21 +0000 (12:19 -0700)]
staging: comedi: amplc_pci230: Prefer using the BIT macro

Fix the checkpatch.pl issues by using the BIT macro and defining some
macros for the multi-bit fields.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: comedi: amplc_dio200_common: document spinlock definition
H Hartley Sweeten [Wed, 30 Mar 2016 18:09:49 +0000 (11:09 -0700)]
staging: comedi: amplc_dio200_common: document spinlock definition

Fix the checkpatch.pl issue:
CHECK: spinlock_t definition without comment

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: comedi: amplc_dio200_common: Prefer 'unsigned int' to bare use of 'unsigned'
H Hartley Sweeten [Wed, 30 Mar 2016 18:09:48 +0000 (11:09 -0700)]
staging: comedi: amplc_dio200_common: Prefer 'unsigned int' to bare use of 'unsigned'

Fix the checkpatch.pl issues.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: comedi: amplc_pc263: fix block comments
H Hartley Sweeten [Wed, 30 Mar 2016 18:36:55 +0000 (11:36 -0700)]
staging: comedi: amplc_pc263: fix block comments

Fix the checkpatch.pl issues:
WARNING: Block comments use * on subsequent lines

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: comedi: amplc_pc263: define the register map
H Hartley Sweeten [Wed, 30 Mar 2016 18:36:58 +0000 (11:36 -0700)]
staging: comedi: amplc_pc263: define the register map

For completeness, define the registers used by this driver and remove
the magic numbers.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: comedi: amplc_pc263: tidy up comedi_driver definition
H Hartley Sweeten [Wed, 30 Mar 2016 18:36:56 +0000 (11:36 -0700)]
staging: comedi: amplc_pc263: tidy up comedi_driver definition

For aesthetics, add some whitespace to the comedi_driver definition.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: comedi: amplc_pc263: tidy up digital output subdevice init
H Hartley Sweeten [Wed, 30 Mar 2016 18:36:57 +0000 (11:36 -0700)]
staging: comedi: amplc_pc263: tidy up digital output subdevice init

For aesthetics, add some whitespace to the digital output subdevice
initialization.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agoStaging: android: change memory allocation style in ion.c
Ben Marsh [Mon, 28 Mar 2016 17:26:19 +0000 (19:26 +0200)]
Staging: android: change memory allocation style in ion.c

Chnages memory allocation style in order to silence a checkpatch.pl
warning.

Signed-off-by: Ben Marsh <bmarsh94@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agoandroid: remove timed output/gpio driver
Rob Herring [Thu, 24 Mar 2016 20:58:17 +0000 (15:58 -0500)]
android: remove timed output/gpio driver

timed_output was only used by the Android vibrator HAL which has now
learned how to use LED triggers instead[1]. Any users of it in AOSP are
on ancient kernels. Adding support for LED triggers is purely DT changes
and proper kernel config.

[1] https://android.googlesource.com/platform%2Fhardware%2Flibhardware/+/61701df363310a5cbd95e3e1638baa9526e42c9b

Cc: John Stultz <john.stultz@linaro.org>
Cc: "Arve Hjønnevåg" <arve@android.com>
Cc: Riley Andrews <riandrews@android.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
8 years agostaging: unisys: remove wmb() in visordriver_remove_device
David Kershner [Thu, 31 Mar 2016 00:38:49 +0000 (20:38 -0400)]
staging: unisys: remove wmb() in visordriver_remove_device

Don't need to have a wmb() in visordriver_remove_device. Also removed
an unnecessary check for drv being null.

Signed-off-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>