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This driver supports all current STi platforms' PWM IPs.
Signed-off-by: Ajit Pal Singh <ajitpal.singh@st.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
[thierry.reding: rename module to pwm-sti, fix build breakage]
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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Although this driver doesn't have any explicit compile-time architecture
dependencies, it is better not to bloat kernels on those platforms, where
this driver isn't needed, unless a compile test is being performed.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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We might be leaving the PGU Frequency (and thus vnn) high during the suspend.
Flusing the delayed work queue should take care of this.
Signed-off-by: Deepak S <deepak.s@linux.intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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BDW has many other Display Engine interrupts and GT interrupts registers.
Collecting it properly on gpu_error_state.
On debugfs all was properly listed already but besides we were also listing old
DEIER and GTIER that doesn't exist on BDW anymore. This was causing
unclaimed register messages
v2: Fix small issues of first version and don't read DEIER regs when pipe's
power well is disabled
v3: bikeshed accepted: use enum pipe pipe instead of int i for pipe interection
v4: Ben notice previous version was checking for display_power_enabled without
using propper locks. Using _unlocked version isn't reliable and we cannot
get this registers when power well is off. So let's avoid getting all DE_IER
per pipe for now. If someone think this is an useful information it can be
added later.
v5: Ben: put back debugfs stuff that might be coverred by pm_get and use
gen >= 8 trying to predict future.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=81701
Cc: Ben Widawsky <ben@bwidawsk.net>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: (v3) Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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If the actual head has progressed forward inside a batch (request),
don't accumulate hangcheck score.
As the hangcheck score in increased only by acthd jumping backwards,
the result is that we only declare an active batch as stuck if it is
trapped inside a loop. Or that the looping will dominate the batch
progression so that it overcomes the bonus that forward progress gives.
v2: Improved commit message (Chris Wilson)
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
[danvet: s/active_loop/active (loop)/ as requested by Chris.]
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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On Broadwell, any PIPE_CONTROL with the "State Cache Invalidate" bit set
must be preceded by a PIPE_CONTROL with the "CS Stall" bit set.
Documented on the BSpec 3D workarounds page.
Reviewed-by: Rafael Barbalho <rafael.barbalho@intel.com>
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
[vsyrjala: add chv w/a note too]
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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We'll want to reuse this for a workaround.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
[danvet: Rmove now unused int.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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rbd_warn() string should be a single line - rbd_warn() appends \n.
Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
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Now that rbd_img_request_create() is called from work functions, no
need to use GFP_ATOMIC.
Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Alex Elder <elder@linaro.org>
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The .config() hook imx_pwm_config() calls clk APIs like clk_prepare()
and clk_get_rate(), which might sleep, so we need to set can_sleep flag
on pwm_chip.
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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Unlike other Intel LPSS devices, the PWM does not have the
clock dividers or the gate. All we get from the clock is the
rate. Since PCI case uses the driver data to get the rate,
we can drop the clk and use the same data also in case of
ACPI. The frequency is the same.
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Chew, Chiau Ee <chiau.ee.chew@intel.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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The site-specific OOM messages are unnecessary, because they
duplicate the MM subsystem generic OOM message. The following
checkpatch warning is also removed.
WARNING: Possible unnecessary 'out of memory' message
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
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While it was never a good idea to sleep in request_fn(), commit
34c6bc2c919a ("locking/mutexes: Add extra reschedule point") made it
a *bad* idea. mutex_lock() since 3.15 may reschedule *before* putting
task on the mutex wait queue, which for tasks in !TASK_RUNNING state
means block forever. request_fn() may be called with !TASK_RUNNING on
the way to schedule() in io_schedule().
Offload request handling to a workqueue, one per rbd device, to avoid
calling blocking primitives from rbd_request_fn().
Fixes: http://tracker.ceph.com/issues/8818
Cc: stable@vger.kernel.org # 3.16, needs backporting for 3.15
Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Tested-by: Eric Eastman <eric0e@aol.com>
Tested-by: Greg Wilson <greg.wilson@keepertech.com>
Reviewed-by: Alex Elder <elder@linaro.org>
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git://anongit.freedesktop.org/tegra/linux into drm-next
drm/tegra: Changes for v3.17-rc1
Mostly some cleanup all over the place. Pitch alignment limitations of
the display controller are now honored and job submission is 64-bit
safe.
The SOR output (used for eDP) properly configures sync signal polarities
according to the display mode rather than hard-coding them to some value
and the number of bits per color is now taken from the panel rather than
hard-coded to properly support 24-bit vs. 18-bit panels.
The DSI controller now properly supports non-continuous clock mode.
GEM objects can now have their flags and tiling mode modified via IOCTLs
to allow buffers imported from Nouveau to be properly displayed. Newer
generations of the Tegra display controller can also detile block linear
buffers at scan-out time.
Finally the driver now properly exports MODULE_DEVICE_TABLEs to allow it
to be automatically loaded when built as a module.
* tag 'drm/tegra/for-3.17-rc1' of git://anongit.freedesktop.org/tegra/linux:
drm/tegra: add MODULE_DEVICE_TABLEs
drm/tegra: dc - Reset controller on driver remove
drm/tegra: Properly align stride for framebuffers
drm/tegra: sor - Configure proper sync polarities
drm/tegra: sor - Use bits-per-color from panel
drm/tegra: Make job submission 64-bit safe
drm/tegra: Allow non-authenticated processes to create buffer objects
drm/tegra: Add SET/GET_FLAGS IOCTLs
drm/tegra: Add SET/GET_TILING IOCTLs
drm/tegra: Implement more tiling modes
drm/tegra: dsi - Handle non-continuous clock flag
drm/tegra: sor - missing unlock on error
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git://anongit.freedesktop.org/tegra/linux into drm-next
drm/panel: Changes for v3.17-rc1
Panels can now be more finely controlled via .prepare() and .unprepare()
callbacks in addition to .enable() and .disable(). New kerneldoc details
what they are supposed to do and when they should be called.
The simple panel driver gained support for a couple of new panels and it
is now possible to specify additional delays during power up and power
down sequences if panels require it.
DSI devices can now advertise that they support non-continuous clock
mode which will allow DSI host controllers to disable the high speed
clock after transmissions to save power.
* tag 'drm/panel/for-3.17-rc1' of git://anongit.freedesktop.org/tegra/linux: (30 commits)
drm/panel: simple: Use devm_gpiod_get_optional()
drm/dsi: Replace upcasting macro by function
drm/panel: ld9040: Replace upcasting macro by function
drm/exynos: dp: Modify driver to support drm_panel
drm/exynos: Move DP setup into commit()
drm/panel: simple: Add AUO B133HTN01 panel support
drm/panel: simple: Support delays in panel functions
drm/panel: simple: Add proper definition for prepare and unprepare
drm/panel: s6e8aa0: Add proper definition for prepare and unprepare
drm/panel: ld9040: Add proper definition for prepare and unprepare
drm/tegra: Add support for panel prepare and unprepare routines
drm/exynos: dsi: Add support for panel prepare and unprepare routines
drm/exynos: dpi: Add support for panel prepare and unprepare routines
drm/panel: simple: Add dummy prepare and unprepare routines
drm/panel: s6e8aa0: Add dummy prepare and unprepare routines
drm/panel: ld9040: Add dummy prepare and unprepare routines
drm/panel: Provide convenience wrapper for .get_modes()
drm/panel: add .prepare() and .unprepare() functions
drm/panel: simple: Remove simple-panel compatible
drm/panel: simple: Add Innolux N116BGE panel support
...
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The DDL registers can hold 7bit numbers. Make the most of those seven
bits by adjusting the threshold where we switch between the 64 vs. 32
precision multipliers.
Also we compute 'entries' to make the decision about precision, and then
we recompute the same value to calculate the actual drain latency. Just
use the already calculate 'entries' there.
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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GTIER and DEIER doesn't have same interface on HSW so this "or" operation
makes the information provided useless.
v2: since we have gtier variable already let's split for everybody
and avoid the strange | op.
Also avoid overriding the value that was set for vlv. In this case I
believe that we should reorganize the whole function, but I'll respect
the comment that ask to not touch the order and let this organization
work to be done later.
v3: moving VLV check to the right place.
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Users often can't do anything about this since their vendors stopped
providing BIOS updates. Also we seem to be able to hack around it
with increased latency values, and thus far the only reports have
been for screens with really high resolutions. So tune it down to a
level where only developers can see it.
Also drop some of the end-user fluff.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Power users spot this and then get adventurous and try to adjust
module driver options. Nothing good ever came out of that, so
hide it better.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Since I've reworked psr support to no longer require x-tiling we don't
check any state protected by the Giant GEM Lock. So drop that check.
Also boo for lockdep_assert_held for not yelling when lockdep is
disabled.
Cc: Paulo Zanoni <przanoni@gmail.com>
Reported-by: Paulo Zanoni <przanoni@gmail.com>
Acked-by: Paulo Zanoni <przanoni@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Fix signal_offset when recording semaphore state on BDW.
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Just like during booting the BIOS can leave the VDD bit enabled after
system resume. So apply the same state sanitization there too. This
fixes a problem where after resume the port power domain refcount gets
unbalanced.
v2:
- unchanged
v3:
- call edp sanitizing from the encoder reset handler (Daniel)
Reported-and-tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Check in vlv_crtc_clock_get if DPLL is enabled before calling dpio read.
It will not be enabled for DSI and avoid dpio read WARN dumps.
Absence of ->get_config was causing other WARN dumps as well. Update
dpll_hw_state as well correctly
v2: Address review comments by Daniel
- Check if DPLL is enabled rather than checking pipe output type
- set adjusted_mode->flags to 0 in compute_config rather than using
pipe_config->quirks
- Add helper function in intel_dsi_pll.c and use that in intel_dsi.c
- updated dpll_hw_state correctly
- Updated commit message and title
v3: Address review comments by Imre
- Proper masking of P1, M1 fields while computing divisors
- assert in case of bpp mismatch
- guard for divide by 0 while computing pclk
- Use ARRAY_SIZE instead of direct calculation
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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This will be needed by an upcoming patch too that needs to sanitize the
VDD state during resume. The additional async disabling is only needed
for the resume path, here it doesn't make a difference since we enable
VDD right after the sanitize call.
v2:
- don't set intel_dp ptr for non-eDP encoders (Ville)
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Ensure that the DSI packets for a particular sequence are completely
sent before going ahead in the enabling or disabling of the panel
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Gcc warns that addr might be used uninitialized. It may not, but I see
why gcc gets confused.
Additionally, hiding code with side-effects inside WARN_ON() argument
seems uncool, so I moved it outside.
Signed-off-by: Pavel Machek <pavel@ucw.cz>
[danvet: Add obligatory /* shuts up gcc */ comment.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Use the new devm_gpiod_get_optional() to simplify the probe code.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Prepare first round of input updates for 3.17.
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Merge large update to Wacom driver, converting it from USB to a HID
driver and unifying wired and bluetooth support, from Benjamin
Tissoires.
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Merge incoming from Andrew Morton:
- Various misc things.
- arch/sh updates.
- Part of ocfs2. Review is slow.
- Slab updates.
- Most of -mm.
- printk updates.
- lib/ updates.
- checkpatch updates.
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (226 commits)
checkpatch: update $declaration_macros, add uninitialized_var
checkpatch: warn on missing spaces in broken up quoted
checkpatch: fix false positives for --strict "space after cast" test
checkpatch: fix false positive MISSING_BREAK warnings with --file
checkpatch: add test for native c90 types in unusual order
checkpatch: add signed generic types
checkpatch: add short int to c variable types
checkpatch: add for_each tests to indentation and brace tests
checkpatch: fix brace style misuses of else and while
checkpatch: add --fix option for a couple OPEN_BRACE misuses
checkpatch: use the correct indentation for which()
checkpatch: add fix_insert_line and fix_delete_line helpers
checkpatch: add ability to insert and delete lines to patch/file
checkpatch: add an index variable for fixed lines
checkpatch: warn on break after goto or return with same tab indentation
checkpatch: emit a warning on file add/move/delete
checkpatch: add test for commit id formatting style in commit log
checkpatch: emit fewer kmalloc_array/kcalloc conversion warnings
checkpatch: improve "no space after cast" test
checkpatch: allow multiple const * types
...
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Pull networking fixes from David Miller:
"This fixes the most immediate fallout from yesterday's networking
merge:
1) sock_tx_timestamp() must not clear the passed in tx_flags, but
rather add to them. Fix from Eric Dumazet.
2) The hyperv driver sendbuf region increase needs to be decreased
slightly to handle older backends. From KY Srinivasan.
3) Fix RCU lockdep splats in netlink diag after recent hashing
changes, from Thomas Graf.
4) The new IPV6_FLOWLABEL was given a socket option number that
overlapped with an existing IP6 tables one, breaking ip6_tables.
Fixed by Pablo Neira Ayuso"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
netlink: hold nl_sock_hash_lock during diag dump
tcp: md5: check md5 signature without socket lock
net: fix USB network driver config option.
net: reallocate new socket option number for IPV6_AUTOFLOWLABEL
vmxnet3: fix decimal printf format specifiers prefixed with 0x
net-timestamp: cumulative tcp timestamping fixes
hyperv: Adjust the size of sendbuf region to support ws2008r2
cxgb4: Fix for SR-IOV VF initialization
net-timestamp: sock_tx_timestamp() fix
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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull trivial tree changes from Jiri Kosina:
"Summer edition of trivial tree updates"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (23 commits)
doc: fix two typos in watchdog-api.txt
irq-gic: remove file name from heading comment
MAINTAINERS: Add miscdevice.h to file list for char/misc drivers.
scsi: mvsas: mv_sas.c: Fix for possible null pointer dereference
doc: replace "practise" with "practice" in Documentation
befs: remove check for CONFIG_BEFS_RW
scsi: doc: fix 'SCSI_NCR_SETUP_MASTER_PARITY'
drivers/usb/phy/phy.c: remove a leading space
mfd: fix comment
cpuidle: fix comment
doc: hpfall.c: fix missing null-terminate after strncpy call
usb: doc: hotplug.txt code typos
kbuild: fix comment in Makefile.modinst
SH: add proper prompt to SH_MAGIC_PANEL_R2_VERSION
ARM: msm: Remove MSM_SCM
crypto: Remove MPILIB_EXTRA
doc: CN: remove dead link, kerneltrap.org no longer works
media: update reference, kerneltrap.org no longer works
hexagon: update reference, kerneltrap.org no longer works
doc: LSM: update reference, kerneltrap.org no longer works
...
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git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Pull HID updates from Jiri Kosina:
"Some highlights:
- hid-sony improvements of Sixaxis device support by Antonio Ospite
- hid-hyperv driven devices can now be used as wakeup source, by
Dexuan Cui
- hid-lenovo driver is now more generic and supports more devices, by
Jamie Lentin
- hid-huion now supports wider range of tablets, by Nikolai
Kondrashov
- other various unsorted fixes and device ID additions"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (30 commits)
HID: hyperv: register as a wakeup source
HID: sony: Default initialize all elements of the LED max_brightness array to 1
HID: huion: Fix sparse warnings
HID: usbhid: Use flag HID_DISCONNECTED when a usb device is removed
HID: ignore jabra gn9350e
HID: cp2112: add I2C mode
HID: use multi input quirk for 22b9:2968
HID: rmi: only bind the hid-rmi driver to the mouse interface of composite USB devices
HID: rmi: check that report ids exist in the report_id_hash before accessing their size
HID: lenovo: Add support for Compact (BT|USB) keyboard
HID: lenovo: Don't call function in condition, show error codes
HID: lenovo: Prepare support for adding other devices
HID: lenovo: Rename hid-lenovo-tpkbd to hid-lenovo
HID: huion: Handle tablets with UC-Logic vendor ID
HID: huion: Switch to generating report descriptor
HID: huion: Don't ignore other interfaces
HID: huion: Use "tablet" instead of specific model
HID: add quirk for 0x04d9:0xa096 device
HID: i2c-hid: call the hid driver's suspend and resume callbacks
HID: rmi: change logging level of log messages related to unexpected reports
...
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Pull watchdog updates from Wim Van Sebroeck:
- remove unnecessary checks after platform_get_resource()
- fix watchdog api documentation typo's
- imx2_wdt: adds big endianness support
- move restart code to the sunxi watchdog driver
* git://www.linux-watchdog.org/linux-watchdog:
wdt: sunxi: Move restart code to the watchdog driver
Documentation: fix two typos in watchdog-api.txt
watchdog: imx2_wdt: adds big endianness support.
watchdog: shwdt: Remove the unnecessary check of resource after platform_get_resource()
watchdog: lantiq_wdt: Remove the un-necessary check of resource after platform_get_resource()
watchdog: dw_wdt: Remove the un-necessary check after platform_get_resource()
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management updates from Rafael Wysocki:
"Again, ACPICA leads the pack (47 commits), followed by cpufreq (18
commits) and system suspend/hibernation (9 commits).
From the new code perspective, the ACPICA update brings ACPI 5.1 to
the table, including a new device configuration object called _DSD
(Device Specific Data) that will hopefully help us to operate device
properties like Device Trees do (at least to some extent) and changes
related to supporting ACPI on ARM.
Apart from that we have hibernation changes making it use radix trees
to store memory bitmaps which should speed up some operations carried
out by it quite significantly. We also have some power management
changes related to suspend-to-idle (the "freeze" sleep state) support
and more preliminary changes needed to support ACPI on ARM (outside of
ACPICA).
The rest is fixes and cleanups pretty much everywhere.
Specifics:
- ACPICA update to upstream version 20140724. That includes ACPI 5.1
material (support for the _CCA and _DSD predefined names, changes
related to the DMAR and PCCT tables and ARM support among other
things) and cleanups related to using ACPICA's header files. A
major part of it is related to acpidump and the core code used by
that utility. Changes from Bob Moore, David E Box, Lv Zheng,
Sascha Wildner, Tomasz Nowicki, Hanjun Guo.
- Radix trees for memory bitmaps used by the hibernation core from
Joerg Roedel.
- Support for waking up the system from suspend-to-idle (also known
as the "freeze" sleep state) using ACPI-based PCI wakeup signaling
(Rafael J Wysocki).
- Fixes for issues related to ACPI button events (Rafael J Wysocki).
- New device ID for an ACPI-enumerated device included into the
Wildcat Point PCH from Jie Yang.
- ACPI video updates related to backlight handling from Hans de Goede
and Linus Torvalds.
- Preliminary changes needed to support ACPI on ARM from Hanjun Guo
and Graeme Gregory.
- ACPI PNP core cleanups from Arjun Sreedharan and Zhang Rui.
- Cleanups related to ACPI_COMPANION() and ACPI_HANDLE() macros
(Rafael J Wysocki).
- ACPI-based device hotplug cleanups from Wei Yongjun and Rafael J
Wysocki.
- Cleanups and improvements related to system suspend from Lan
Tianyu, Randy Dunlap and Rafael J Wysocki.
- ACPI battery cleanup from Wei Yongjun.
- cpufreq core fixes from Viresh Kumar.
- Elimination of a deadband effect from the cpufreq ondemand governor
and intel_pstate driver cleanups from Stratos Karafotis.
- 350MHz CPU support for the powernow-k6 cpufreq driver from Mikulas
Patocka.
- Fix for the imx6 cpufreq driver from Anson Huang.
- cpuidle core and governor cleanups from Daniel Lezcano, Sandeep
Tripathy and Mohammad Merajul Islam Molla.
- Build fix for the big_little cpuidle driver from Sachin Kamat.
- Configuration fix for the Operation Performance Points (OPP)
framework from Mark Brown.
- APM cleanup from Jean Delvare.
- cpupower utility fixes and cleanups from Peter Senna Tschudin,
Andrey Utkin, Himangi Saraogi, Rickard Strandqvist, Thomas
Renninger"
* tag 'pm+acpi-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (118 commits)
ACPI / LPSS: add LPSS device for Wildcat Point PCH
ACPI / PNP: Replace faulty is_hex_digit() by isxdigit()
ACPICA: Update version to 20140724.
ACPICA: ACPI 5.1: Update for PCCT table changes.
ACPICA/ARM: ACPI 5.1: Update for GTDT table changes.
ACPICA/ARM: ACPI 5.1: Update for MADT changes.
ACPICA/ARM: ACPI 5.1: Update for FADT changes.
ACPICA: ACPI 5.1: Support for the _CCA predifined name.
ACPICA: ACPI 5.1: New notify value for System Affinity Update.
ACPICA: ACPI 5.1: Support for the _DSD predefined name.
ACPICA: Debug object: Add current value of Timer() to debug line prefix.
ACPICA: acpihelp: Add UUID support, restructure some existing files.
ACPICA: Utilities: Fix local printf issue.
ACPICA: Tables: Update for DMAR table changes.
ACPICA: Remove some extraneous printf arguments.
ACPICA: Update for comments/formatting. No functional changes.
ACPICA: Disassembler: Add support for the ToUUID opererator (macro).
ACPICA: Remove a redundant cast to acpi_size for ACPI_OFFSET() macro.
ACPICA: Work around an ancient GCC bug.
ACPI / processor: Make it possible to get local x2apic id via _MAT
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Pull SCSI updates from James Bottomley:
"This patch set consists of the usual driver updates (ufs, storvsc,
pm8001 hpsa). It also has removal of the user space target driver
code (everyone is using LIO now), a partial PCI MSI-X update, more
multi-queue updates, conversion to 64 bit LUNs (so we could
theoretically cope with any LUN returned by a device) and placeholder
support for the ZBC device type (Shingle drives), plus an assortment
of minor updates and bug fixes"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (143 commits)
scsi: do not issue SCSI RSOC command to Promise Vtrak E610f
vmw_pvscsi: Use pci_enable_msix_exact() instead of pci_enable_msix()
pm8001: Fix invalid return when request_irq() failed
lpfc: Remove superfluous call to pci_disable_msix()
isci: Use pci_enable_msix_exact() instead of pci_enable_msix()
bfa: Use pci_enable_msix_exact() instead of pci_enable_msix()
bfa: Cleanup bfad_setup_intr() function
bfa: Do not call pci_enable_msix() after it failed once
fnic: Use pci_enable_msix_exact() instead of pci_enable_msix()
scsi: use short driver name for per-driver cmd slab caches
scsi_debug: support scsi-mq, queues and locks
Drivers: add blist flags
scsi: ufs: fix endianness sparse warnings
scsi: ufs: make undeclared functions static
bnx2i: Update driver version to 2.7.10.1
pm8001: fix a memory leak in nvmd_resp
pm8001: fix update_flash
pm8001: fix a memory leak in flash_update
pm8001: Cleaning up uninitialized variables
pm8001: Fix to remove null pointer checks that could never happen
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"There've been many updates in ASoC side at this time, especially the
framework enhancement for multiple CODECs on a single DAI and more
componentization works.
The only major change in ALSA core is the addition of timestamp type
in sw_params field. This should behave in backward compatible way.
Other than that, there are lots of small changes and new drivers in
wide range, including a large code cut in HD-audio driver for
deprecated static quirks. Some highlights are below:
ALSA Core:
- Add the new timestamp type field to sw_params to choose
MONOTONIC_RAW type
HD-audio:
- Continued conversion to standard printk macros, generic code
cleanups
- Removal of obsoleted static quirk codes for Conexant and C-Media
codecs
- Fixups for HP Envy TS, Dell XPS 15, HP and Dell mute/mic LED,
Gigabyte BXBT-2807 mobo
- Intel Braswell support
ASoC:
- Support for multiple CODECs attached to a single DAI, enabling
systems with for example multiple DAC/speaker drivers on a single
link, contributed by Benoit Cousson based on work from Misael Lopez
Cruz
- Support for byte controls larger than 256 bytes based on the use of
TLVs contributed by Omair Mohammed Abdullah
- More componentisation work from Lars-Peter Clausen
- The remainder of the conversions of CODEC drivers to params_width()
by Mark Brown
- Drivers for Cirrus Logic CS4265, Freescale i.MX ASRC blocks,
Realtek RT286 and RT5670, Rockchip RK3xxx I2S controllers and Texas
Instruments TAS2552
- Lots of updates and fixes, especially to the DaVinci, Intel,
Freescale, Realtek, and rcar drivers"
* tag 'sound-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (402 commits)
ALSA: usb-audio: Whitespace cleanups for sound/usb/midi.*
ALSA: usb-audio: Respond to suspend and resume callbacks for MIDI input
sound/oss/pss: Remove typedefs pss_mixerdata and pss_confdata
sound/oss/opl3: Remove typedef opl_devinfo
ALSA: fireworks: fix specifiers in format strings for propper output
ASoC: imx-audmux: Use uintptr_t for port numbers
ASoC: davinci: Enable menuconfig entry for McASP
ASoC: fsl_asrc: Don't access members of config before checking it
ASoC: fsl_sarc_dma: Check pair before using it
ASoC: adau1977: Fix truncation warning on 64 bit architectures
ALSA: virtuoso: add Xonar Essence STX II support
ALSA: riptide: fix %d confusingly prefixed with 0x in format strings
ALSA: fireworks: fix %d confusingly prefixed with 0x in format strings
ALSA: hda - add codec ID for Braswell display audio codec
ALSA: hda - add PCI IDs for Intel Braswell
ALSA: usb-audio: Adjust Gamecom 780 volume level
ALSA: usb-audio: improve dmesg source grepability
ASoC: rt5670: Fix duplicate const warnings
ASoC: rt5670: Staticise non-exported symbols
ASoC: Intel: update stream only on stream IPC msgs
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git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi
Pull HSI changes from Sebastian Reichel:
"Misc fixes in SSI related drivers"
* tag 'hsi-for-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi:
HSI: omap_ssi: Fix return value check in ssi_debug_add_ctrl()
HSI: omap_ssi_port: Fix return value check in ssi_debug_add_port()
HSI: ssi_protocol: Fix sparse non static symbol warning
drivers/hsi/controllers/omap_ssi{,_port}.c: fix failure checks
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Pull power supply changes from Sebastian Reichel:
- Added iPaq h3xxx battery driver
- Added Broadcom STB reset driver
- DT support for rx51-battery
- misc. fixes
* tag 'for-v3.17' of git://git.infradead.org/battery-2.6:
ipaq_micro_battery: fix sparse non static symbol warning
power: add driver for battery reading on iPaq h3xxx
power: twl4030_charger: detect battery presence prior to enabling charger
power: reset: Add reboot driver for brcmstb
power_supply: Fix sparse non static symbol warning
power_supply: Add inlmt,iterm, min/max temp props
charger: tps65090: Allow charger module to be used when no irq
power/reset: Fix GPL v2 license string typo
power: poweroff: gpio: convert to use descriptors
bq27000: report missing device better.
bq27x00_battery: Introduce the use of the managed version of kzalloc
Documentation: DT: Document rx51-battery binding
rx51_battery: convert to iio consumer
bq2415x_charger: Fix Atomic Sleep Bug
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The function may be useful for other drivers, so export it. (Suggested
by Tejun Heo.)
Note that I inverted the return value of glob_match; returning true on
match seemed to make more sense.
Signed-off-by: George Spelvin <linux@horizon.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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All other add functions for lists have the new item as first argument
and the position where it is added as second argument. This was changed
for no good reason in this function and makes using it unnecessary
confusing.
The name was changed to hlist_add_behind() to cause unconverted code to
generate a compile error instead of using the wrong parameter order.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Ken Helias <kenhelias@firemail.de>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Acked-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> [intel driver bits]
Cc: Hugh Dickins <hughd@google.com>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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definition and use
The DEFINE_SIMPLE_ATTRIBUTE macro should not end in a ; Fix the one use
in the kernel tree that did not have a semicolon.
Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Luca Tettamanti <kronos.it@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Currently, we use a rwlock tb_lock to protect concurrent access to the
whole zram meta table. However, according to the actual access model,
there is only a small chance for upper user to access the same
table[index], so the current lock granularity is too big.
The idea of optimization is to change the lock granularity from whole
meta table to per table entry (table -> table[index]), so that we can
protect concurrent access to the same table[index], meanwhile allow the
maximum concurrency.
With this in mind, several kinds of locks which could be used as a
per-entry lock were tested and compared:
Test environment:
x86-64 Intel Core2 Q8400, system memory 4GB, Ubuntu 12.04,
kernel v3.15.0-rc3 as base, zram with 4 max_comp_streams LZO.
iozone test:
iozone -t 4 -R -r 16K -s 200M -I +Z
(1GB zram with ext4 filesystem, take the average of 10 tests, KB/s)
Test base CAS spinlock rwlock bit_spinlock
-------------------------------------------------------------------
Initial write 1381094 1425435 1422860 1423075 1421521
Rewrite 1529479 1641199 1668762 1672855 1654910
Read 8468009 11324979 11305569 11117273 10997202
Re-read 8467476 11260914 11248059 11145336 10906486
Reverse Read 6821393 8106334 8282174 8279195 8109186
Stride read 7191093 8994306 9153982 8961224 9004434
Random read 7156353 8957932 9167098 8980465 8940476
Mixed workload 4172747 5680814 5927825 5489578 5972253
Random write 1483044 1605588 1594329 1600453 1596010
Pwrite 1276644 1303108 1311612 1314228 1300960
Pread 4324337 4632869 4618386 4457870 4500166
To enhance the possibility of access the same table[index] concurrently,
set zram a small disksize(10MB) and let threads run with large loop
count.
fio test:
fio --bs=32k --randrepeat=1 --randseed=100 --refill_buffers
--scramble_buffers=1 --direct=1 --loops=3000 --numjobs=4
--filename=/dev/zram0 --name=seq-write --rw=write --stonewall
--name=seq-read --rw=read --stonewall --name=seq-readwrite
--rw=rw --stonewall --name=rand-readwrite --rw=randrw --stonewall
(10MB zram raw block device, take the average of 10 tests, KB/s)
Test base CAS spinlock rwlock bit_spinlock
-------------------------------------------------------------
seq-write 933789 999357 1003298 995961 1001958
seq-read 5634130 6577930 6380861 6243912 6230006
seq-rw 1405687 1638117 1640256 1633903 1634459
rand-rw 1386119 1614664 1617211 1609267 1612471
All the optimization methods show a higher performance than the base,
however, it is hard to say which method is the most appropriate.
On the other hand, zram is mostly used on small embedded system, so we
don't want to increase any memory footprint.
This patch pick the bit_spinlock method, pack object size and page_flag
into an unsigned long table.value, so as to not increase any memory
overhead on both 32-bit and 64-bit system.
On the third hand, even though different kinds of locks have different
performances, we can ignore this difference, because: if zram is used as
zram swapfile, the swap subsystem can prevent concurrent access to the
same swapslot; if zram is used as zram-blk for set up filesystem on it,
the upper filesystem and the page cache also prevent concurrent access
of the same block mostly. So we can ignore the different performances
among locks.
Acked-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Reviewed-by: Davidlohr Bueso <davidlohr@hp.com>
Signed-off-by: Weijie Yang <weijie.yang@samsung.com>
Signed-off-by: Minchan Kim <minchan@kernel.org>
Cc: Jerome Marchand <jmarchan@redhat.com>
Cc: Nitin Gupta <ngupta@vflare.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Some architectures (eg, hexagon and PowerPC) could use PAGE_SHIFT of 16
or more. In these cases u16 is not sufficiently large to represent a
compressed page's size so use size_t.
Signed-off-by: Minchan Kim <minchan@kernel.org>
Reported-by: Weijie Yang <weijie.yang@samsung.com>
Acked-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Jerome Marchand <jmarchan@redhat.com>
Cc: Nitin Gupta <ngupta@vflare.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Drop SECTOR_SIZE define, because it's not used.
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Weijie Yang <weijie.yang@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Andrew Morton has recently noted that `struct table' actually represents
table entry and, thus, should be renamed. Rename to `zram_table_entry'.
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Weijie Yang <weijie.yang@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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With memoryless node support being worked on, it's possible that for
optimizations that a node may not have a non-NULL zonelist. When
CONFIG_NUMA is enabled and node 0 is memoryless, this means the zonelist
for first_online_node may become NULL.
The oom killer requires a zonelist that includes all memory zones for
the sysrq trigger and pagefault out of memory handler.
Ensure that a non-NULL zonelist is always passed to the oom killer.
[akpm@linux-foundation.org: fix non-numa build]
Signed-off-by: David Rientjes <rientjes@google.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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range
When limiting memory by mem= and ACPI DSDT table has PNP0C80,
firmware_map_entrys of same memory range are allocated and memmap X
sysfses which have same memory range are created as follows:
# cat /sys/firmware/memmap/0/*
0x407ffffffff
0x40000000000
System RAM
# cat /sys/firmware/memmap/33/*
0x407ffffffff
0x40000000000
System RAM
# cat /sys/firmware/memmap/35/*
0x407ffffffff
0x40000000000
System RAM
In this case, when hot-removing memory, kernel panic occurs, showing
following call trace:
BUG: unable to handle kernel paging request at 00000001003e000b
IP: sysfs_open_file+0x46/0x2b0
PGD 203a89fe067 PUD 0
Oops: 0000 [#1] SMP
...
Call Trace:
do_dentry_open+0x1ef/0x2a0
finish_open+0x31/0x40
do_last+0x57c/0x1220
path_openat+0xc2/0x4c0
do_filp_open+0x4b/0xb0
do_sys_open+0xf3/0x1f0
SyS_open+0x1e/0x20
system_call_fastpath+0x16/0x1b
The problem occurs as follows:
When calling e820_reserve_resources(), firmware_map_entrys of all e820
memory map are allocated. And all firmware_map_entrys is added
map_entries list as follows:
map_entries
-> +--- entry A --------+ -> ...
| start 0x407ffffffff|
| end 0x40000000000|
| type System RAM |
+--------------------+
After that, if ACPI DSDT table has PNP0C80 and the memory range is
limited by mem=, the PNP0C80 is hot-added. Then firmware_map_entry of
PNP0C80 is allocated and added map_entries list as follows:
map_entries
-> +--- entry A --------+ -> ... -> +--- entry B --------+
| start 0x407ffffffff| | start 0x407ffffffff|
| end 0x40000000000| | end 0x40000000000|
| type System RAM | | type System RAM |
+--------------------+ +--------------------+
Then memmap 0 sysfs for entry B is created.
After that, firmware_memmap_init() creates memmap sysfses of all
firmware_map_entrys in map_entries list. As a result, memmap 33 sysfs
for entry A and memmap 35 sysfs for entry B are created. But kobject of
entry B has been used by memmap 0 sysfs. So when creating memmap 35
sysfs, the kobject is broken.
If hot-removing memory, memmap 0 sysfs is destroyed and kobject of
memmap 0 sysfs is freed. But the kobject can be accessed via memmap 35
sysfs. So when open memmap 35 sysfs, kernel panic occurs.
This patch checks whether there is firmware_map_entry of same memory
range in map_entries list and don't allocate firmware_map_entry of same
memroy range.
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Toshi Kani <toshi.kani@hp.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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firmware_map_find_entry_bootmem()
firmware_map_add_hotplug() calls firmware_map_find_entry_bootmem() to
get free firmware_map_entry. But end arguments is not correct. So
firmware_map_find_entry_bootmem() cannot not find firmware_map_entry.
The patch passes the correct end argument to firmware_map_find_entry_bootmem().
Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Toshi Kani <toshi.kani@hp.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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