The statistics are:
- VRAM usage in bytes
- GTT usage in bytes
- number of bytes moved by TTM
The last one is actually a counter, so you need to sample it before and after
command submission and take the difference.
This is useful for finding performance bottlenecks. Userspace queries are
also added.
v2: use atomic64_t
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
When passing buffers between processes, the receiving process needs to know
the original buffer domain, so that it doesn't accidentally move the buffer.
v2: reserve the buffer
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Now that Christian fixed the performance problems with
the feedback buffer in mesa, we can enable variable UVD
clocks. There are multiple UVD power states associated
with different types and numbers of streams. This uses
the appropriate state based on that information rather
than always using the fastest UVD clocks which saves some
power. One possible downside is that this may adversely
affect decode benchmarks since these power states target
specific playback requirements rather than maximum
performance. If that becomes an issue, we can add a
sysfs attribute to force the max UVD state.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
We no longer need to take the ring lock while checking for
a gpu lockup, so just cleanup the code.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Use atomics and jiffies_64, so that we don't need to have the
ring mutex locked any more and avoid wrap arounds.
v2: fix some checkpatch warnings
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
So this is the initial pull request for radeon drm-next 3.15. Highlights:
- VCE bringup including DPM support
- Few cleanups for the ring handling code
* 'drm-next-3.15' of git://people.freedesktop.org/~deathsimple/linux:
drm/radeon: cleanup false positive lockup handling
drm/radeon: drop radeon_ring_force_activity
drm/radeon: drop drivers copy of the rptr
drm/radeon/cik: enable/disable vce cg when encoding v2
drm/radeon: add support for vce 2.0 clock gating
drm/radeon/dpm: properly enable/disable vce when vce pg is enabled
drm/radeon/dpm: enable dynamic vce state switching v2
drm/radeon: add vce dpm support for KV/KB
drm/radeon: enable vce dpm on CI
drm/radeon: add vce dpm support for CI
drm/radeon: fill in set_vce_clocks for CIK asics
drm/radeon/dpm: fetch vce states from the vbios
drm/radeon/dpm: fill in some initial vce infrastructure
drm/radeon/dpm: move platform caps fetching to a separate function
drm/radeon: add callback for setting vce clocks
drm/radeon: add VCE version parsing and checking
drm/radeon: add VCE ring query
drm/radeon: initial VCE support v4
drm/radeon: fix CP semaphores on CIK
Updates from Jean-Fracois for the TDA998x driver, which are on top of
the fixes you have previously pulled, except these changes aren't
intended for -rc, but the next merge window.
Several of these are issues of correctness - passing more correct HDMI
info packets, not reading registers in older chips documented as write
only (despite appearing to be read/write in later chips). Others are
code cleanups (using definitions rather than constants where we have
them already in the kernel).
Additional functionality is also added by way of optional support for
the IRQ from the TDA998x, which allows us to avoid busy-waiting for
the EDID reads.
* 'tda998x-devel' of git://ftp.arm.linux.org.uk/~rmk/linux-cubox:
drm/i2c: tda998x: always use the same device for all kernel messages
drm/i2c: tda998x: adjust the audio clock divider for S/PDIF
drm/i2c: tda998x: code optimization
drm/i2c: tda998x: remove the unused variable ca_i2s
drm/i2c: tda998x: make the audio code more readable
drm/i2c: tda998x: use irq for connection status and EDID read
drm/i2c: tda998x: always enable EDID read IRQ
drm/i2c: tda998x: add DT documentation
drm/i2c: tda998x: add DT support
drm/i2c: tda998x: don't read write-only registers
drm/i2c: tda998x: don't freeze the system at audio startup time
drm/i2c: tda998x: change probe message origin
drm/i2c: tda998x: code cleanup
drm/i2c: tda998x: clean up error chip version checking
drm/i2c: tda998x: check more I/O errors
drm/i2c: tda998x: simplify the i2c read/write functions
drm/i2c: tda998x: use ALSA IEC958 definitions and update audio frequency
drm/i2c: tda998x: add the active aspect in HDMI AVI frame
drm/i2c: tda998x: use HDMI constants
- Yet more steps towards atomic modeset from Ville.
- DP panel power sequencing improvements from Paulo.
- irq code cleanups from Ville.
- 5.4 GHz dp lane clock support for bdw/hsw from Todd.
- Clock readout support for hsw/bdw (aka fastboot) from Jesse.
- Make pipe underruns report at ERROR level (Ville). This is to check our
improved watermarks code.
- Full ppgtt support from Ben for gen7.
- More fbc fixes and improvements from Ville all over the place, unfortunately
not yet enabled by default on more platforms.
- w/a cleanups from Ville.
- HiZ stall optimization settings (Chia-I Wu).
- Display register mmio offset refactor patch from Antti.
- RPS improvements for corner-cases from Jeff McGee.
* tag 'drm-intel-next-2014-02-07' of ssh://git.freedesktop.org/git/drm-intel: (166 commits)
drm/i915: Update rps interrupt limits
drm/i915: Restore rps/rc6 on reset
drm/i915: Prevent recursion by retiring requests when the ring is full
drm/i915: Generate a hang error code
drm/i915: unify FLIP_DONE macro names
drm/i915: vlv: s/spin_lock_irqsave/spin_lock/ in irq handler
drm/i915: factor out valleyview_pipestat_irq_handler
drm/i915: vlv: don't unmask IIR[DISPLAY_PIPE_A/B_VBLANK] interrupt
drm/i915: Reorganize display pipe register accesses
drm/i915: Treat using a purged buffer as a source of EFAULT
drm/i915: Convert EFAULT into a silent SIGBUS
drm/i915: release mutex in i915_gem_init()'s error path
drm/i915: check for oom when allocating private_default_ctx
drm/i915/vlv: WA to fix Voltage not getting dropped to Vmin when Gfx is power gated.
drm/i915: Get rid of acthd based guilty batch search
drm/i915: Use hangcheck score to find guilty context
drm/i915: Drop WaDisablePSDDualDispatchEnable:ivb for IVB GT2
drm/i915: Fix IVB GT2 WaDisableDopClockGating and WaDisablePSDDualDispatchEnable
drm/i915: Don't access snooped pages through the GTT (even for error capture)
drm/i915: Only print information for filing bug reports once
...
Conflicts:
drivers/gpu/drm/i915/intel_dp.c
This series of patches implements a small framework that abstracts away
some of the functionality that the DisplayPort AUX channel provides. It
comes with a set of generic helpers that use the driver implementations
to reduce code duplication.
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Merge tag 'drm/dp-aux-for-3.15-rc1' of git://anongit.freedesktop.org/tegra/linux into drm-next
drm: DisplayPort AUX framework for v3.15-rc1
This series of patches implements a small framework that abstracts away
some of the functionality that the DisplayPort AUX channel provides. It
comes with a set of generic helpers that use the driver implementations
to reduce code duplication.
* tag 'drm/dp-aux-for-3.15-rc1' of git://anongit.freedesktop.org/tegra/linux:
drm/dp: Allow registering AUX channels as I2C busses
drm/dp: Add DisplayPort link helpers
drm/dp: Add drm_dp_dpcd_read_link_status()
drm/dp: Add AUX channel infrastructure
Implements an I2C-over-AUX I2C adapter on top of the generic drm_dp_aux
infrastructure. It extracts the retry logic from existing drivers, which
should help in porting those drivers to this new helper.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
---
Changes in v5:
- move comments partially to to header file
- keep MOT set between I2C messages
- return -EPROTO on short reads
Changes in v4:
- fix typo "bitrate" -> "bit rate"
Changes in v3:
- add back DRM_DEBUG_KMS and DRM_ERROR messages
- embed i2c_adapter within struct drm_dp_aux
- fix typo in comment
Add a helper to probe a DP link (read out the supported DPCD revision,
maximum rate, link count and capabilities) as well as power up the DP
link and configure it accordingly.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
---
Changes in v5:
- export helpers
Changes in v4:
- fix a couple of typos in comments as pointed out by Alex Deucher
Changes in v3:
- split into drm_dp_link_power_up() and drm_dp_link_configure()
- do not change sink state for DPCD versions earlier than 1.1
- sleep for 1-2 ms after setting local sink to D0 state
- read and write consecutive registers where possible
- read DPCD revision when link is probed
- remove duplicate kerneldoc
The function reads the link status (6 bytes starting at offset 0x202)
from the DPCD so that it can be conveniently passed to other DPCD
helpers.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This is a superset of the current i2c_dp_aux bus functionality and can
be used to transfer native AUX in addition to I2C-over-AUX messages.
Helpers are provided to read and write the DPCD, either blockwise or
byte-wise. Many of the existing helpers for DisplayPort take a copy of a
portion of the DPCD and operate on that, without a way to write data
back to the DPCD (e.g. for configuration of the link).
Subsequent patches will build upon this infrastructure to provide common
functionality in a generic way.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
---
Changes in v5:
- move comments partially to struct drm_dp_aux_msg in header file
- return -EPROTO on short reads in DPCD helpers
Changes in v4:
- fix a typo in a comment
Changes in v3:
- reorder drm_dp_dpcd_writeb() arguments to be more intuitive
- return number of bytes transferred in drm_dp_dpcd_write()
- factor out drm_dp_dpcd_access()
- describe error codes
A collection of fixes for ARM platforms. Most are fixes for DTS files,
mostly from DT conversion on OMAP which is still finding a few issues here
and there.
There's a couple of small stale code removal patches that we usually
queue for the next release instead, but they seemed harmless enough to
bring in now.
Also, a fix for backlight on some PXA platforms, and a cache configuration
fix for Tegra, etc.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"A collection of fixes for ARM platforms. Most are fixes for DTS
files, mostly from DT conversion on OMAP which is still finding a few
issues here and there.
There's a couple of small stale code removal patches that we usually
queue for the next release instead, but they seemed harmless enough to
bring in now.
Also, a fix for backlight on some PXA platforms, and a cache
configuration fix for Tegra, etc"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (25 commits)
MAINTAINERS: add additional ARM BCM281xx/BCM11xxx maintainer
ARM: tegra: only run PL310 init on systems with one
ARM: tegra: Add head numbers to display controllers
ARM: imx6: build pm-imx6q.c independently of CONFIG_PM
ARM: tegra: fix RTC0 alias for Cardhu
ARM: dove: dt: revert PMU interrupt controller node
Documentation: dt: OMAP: Update Overo/Tobi
ARM: dts: Add support for both OMAP35xx and OMAP36xx Overo/Tobi
ARM: dts: omap3-tobi: Use the correct vendor prefix
ARM: dts: omap3-tobi: Fix boot with OMAP36xx-based Overo
ARM: OMAP2+: Remove legacy macros for zoom platforms
ARM: OMAP2+: Remove MACH_NOKIA_N800
ARM: dts: N900: add missing compatible property
ARM: dts: N9/N950: fix boot hang with 3.14-rc1
ARM: OMAP1: nokia770: enable tahvo-usb
ARM: OMAP2+: gpmc: fix: DT ONENAND child nodes not probed when MTD_ONENAND is built as module
ARM: OMAP2+: gpmc: fix: DT NAND child nodes not probed when MTD_NAND is built as module
ARM: dts: omap3-gta04: Fix mmc1 properties.
ARM: dts: omap3-gta04: Fix 'aux' gpio key flags.
ARM: OMAP2+: add missing ARCH_HAS_OPP
...
Mostly unexciting driver fixes, plus one fix to lower the severity of
the log message when we don't use an optional regulator - the fixes for
ACPI system made this come up more often and it was correctly observed
that it was causing undue concern for users.
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Merge tag 'regulator-v3.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fixes from Mark Brown:
"Mostly unexciting driver fixes, plus one fix to lower the severity of
the log message when we don't use an optional regulator - the fixes
for ACPI system made this come up more often and it was correctly
observed that it was causing undue concern for users"
* tag 'regulator-v3.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: max14577: Fix invalid return value on DT parse success
regulator: core: Change dummy supplies error message to a warning
regulator: s5m8767: Add missing of_node_put
regulator: s5m8767: Use of_get_child_by_name
regulator: da9063: Bug fix when setting max voltage on LDOs 5-11
Pull timer fix from Thomas Gleixner:
"Serialize the registration of a new sched_clock in the currently ARM
only generic sched_clock facilty to avoid sched_clock havoc"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched_clock: Prevent callers from seeing half-updated data
Pull x86 fixes from Thomas Gleixner:
- a bugfix which prevents a divide by 0 panic when the newly introduced
try_msr_calibrate_tsc() fails
- enablement of the Baytrail platform to utilize the newfangled msr
based calibration
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86: tsc: Add missing Baytrail frequency to the table
x86, tsc: Fallback to normal calibration if fast MSR calibration fails
Pull irq fixes from Thomas Gleixner:
"Another four fixlets to tame the ARM orion irq chip"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip: orion: Fix getting generic chip pointer.
irqchip: orion: clear stale interrupts in irq_startup
irqchip: orion: use handle_edge_irq on bridge irqs
irqchip: orion: clear bridge cause register on init
Here are a number of USB fixes for reported issues for 3.14-rc4
The majority of these are for USB gadget, phy, and musb driver issues.
And there's a few new device ids thrown in for good measure.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-3.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are a number of USB fixes for reported issues for 3.14-rc4
The majority of these are for USB gadget, phy, and musb driver issues.
And there's a few new device ids thrown in for good measure"
* tag 'usb-3.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: chipidea: need to mask when writting endptflush and endptprime
usb: musb: correct use of schedule_delayed_work()
usb: phy: msm: fix compilation errors when !CONFIG_PM_SLEEP
usb: gadget: fix NULL pointer dereference
usb: gadget: printer: using gadget_is_otg to check otg support at runtime
phy: let phy_provider_register be the last step in registering PHY
phy-core: Don't allow building phy-core as a module
phy-core: Don't propagate -ENOSUPP from phy_pm_runtime_get_sync to caller
phy-core: phy_get: Leave error logging to the caller
phy,phy-bcm-kona-usb2.c: Add dependency on HAS_IOMEM
usb: musb: correct use of schedule_delayed_work()
usb: musb: do not sleep in atomic context
USB: serial: option: blacklist interface 4 for Cinterion PHS8 and PXS8
USB: EHCI: add delay during suspend to prevent erroneous wakeups
usb: gadget: bcm63xx_udc: fix build failure on DMA channel code
usb: musb: do not sleep in atomic context
usb: gadget: s3c2410_udc: Fix build error
usb: musb: core: Fix remote-wakeup resume
usb: musb: host: Fix SuperSpeed hub enumeration
usb: musb: fix obex in g_nokia.ko causing kernel panic
Here is a single commit, a revert of a sysfs file change that ended up
breaking a userspace tool.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-3.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull TTY revert from Greg KH:
"Here is a single commit, a revert of a sysfs file change that ended up
breaking a userspace tool"
* tag 'tty-3.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
Revert "tty: Set correct tty name in 'active' sysfs attribute"
Here is a single android driver fix for 3.14-rc4 that fixes a reported
problem in the binder driver.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-3.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging tree fix from Greg KH:
"Here is a single android driver fix for 3.14-rc4 that fixes a reported
problem in the binder driver"
* tag 'staging-3.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: binder: Fix death notifications
Here is a single commit, to fix a reported problem in the mei driver.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-3.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc fix from Greg KH:
"Here is a single commit, to fix a reported problem in the mei driver"
* tag 'char-misc-3.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
mei: set client's read_cb to NULL when flow control fails
Add myself as an additional maintainer for the Broadcom mobile
SoCs.
Signed-off-by: Matt Porter <mporter@linaro.org>
Acked-by: Christian Daudt <bcm@fixthebug.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
This reverts commit d8a5dc3033.
This breaks plymouth installs, either because plymouth is using the file
"incorrectly" or because the patch is incorrect. Either way, this needs
to be reverted until it is all figured out.
Reported-by: Josh Boyer <jwboyer@fedoraproject.org>
Reported-by: Ray Strode <halfline@gmail.com>
Cc: Lennart Poettering <lennart@poettering.net>
Cc: Kay Sievers <kay@vrfy.org>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: David Herrmann <dh.herrmann@gmail.com>
Cc: Werner Fink <werner@suse.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Pull scheduler fixes from Ingo Molnar:
"Misc fixlets: a fair number of them resulting from the new
SCHED_DEADLINE code"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/deadline: Remove useless dl_nr_total
sched/deadline: Test for CPU's presence explicitly
sched: Add 'flags' argument to sched_{set,get}attr() syscalls
sched: Fix information leak in sys_sched_getattr()
sched,numa: add cond_resched to task_numa_work
sched/core: Make dl_b->lock IRQ safe
sched/core: Fix sched_rt_global_validate
sched/deadline: Fix overflow to handle period==0 and deadline!=0
sched/deadline: Fix bad accounting of nr_running
Pull xfs fixes from Dave Chinner:
"This is the first pull request I've had to do for you, so I'm still
sorting things out. The reason I'm sending this and not Ben should be
obvious from the first commit below - SGI has stepped down from the
XFS maintainership role. As such, I'd like to take another
opportunity to thank them for their many years of effort maintaining
XFS and supporting the XFS community that they developed from the
ground up.
So I haven't had time to work things like signed tags into my
workflows yet, so this is just a repo branch I'm asking you to pull
from. And yes, I named the branch -rc4 because I wanted the fixes in
rc4, not because the branch was for merging into -rc3. Probably not
right, either.
Anyway, I should have everything sorted out by the time the next merge
window comes around. If there's anything that you don't like in the
pull req, feel free to flame me unmercifully.
The changes are fixes for recent regressions and important thinkos in
verification code:
- a log vector buffer alignment issue on ia32
- timestamps on truncate got mangled
- primary superblock CRC validation fixes and error message
sanitisation"
* 'xfs-fixes-for-3.14-rc4' of git://oss.sgi.com/xfs/xfs:
xfs: limit superblock corruption errors to actual corruption
xfs: skip verification on initial "guess" superblock read
MAINTAINERS: SGI no longer maintaining XFS
xfs: xfs_sb_read_verify() doesn't flag bad crcs on primary sb
xfs: ensure correct log item buffer alignment
xfs: ensure correct timestamp updates from truncate
This fixes bug introduced in 667a6b7a (regulator: max14577: Add missing
of_node_put). The DTS parsing function returned number of matched
regulators as success status which then was compared against 0 in probe.
Result was a probe fail after successful parsing the DTS:
max14577-regulator: probe of max14577-regulator failed with error 2
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviwed-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
- orion:
- fixes for clearing bridge cause register, and clearing stale interrupts
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Merge tag 'irqchip-mvebu-fixes-3.14' of git://git.infradead.org/linux-mvebu into irq/urgent
irqchip mvebu fixes for v3.14
- orion:
- fixes for clearing bridge cause register, and clearing stale interrupts
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This branch contains a bug fix for the way devicetree code identifies
the type of device. Device drivers can contain a list of of_device_ids,
but it more than one entry will match, then the device driver may choose
the wrong one. Commit 105353145e, "match each node compatible against
all given matches first", was queued for v3.14 but ended up causing
other bugs. Commit 06b29e76a7 attempted to fix it but it had other bugs.
Merely reverting the fix and waiting until v3.15 isn't a good option
because there is code in v3.14 that depends on the revised behaviour to
boot.
This branch should finally fixes the problem correctly. This time
instead of just hoping that the patch is correct, this branch also adds
new testcases that validate the behaviour.
The changes in this branch are larger than I would like for a -rc pull,
but moving the test case data out of out of arch/arm so that it could be
validated on other architectures was important.
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Merge tag 'dt-for-linus' of git://git.secretlab.ca/git/linux
Pull devicetree fixes from Grant Likely:
"Device tree compatible match order bug fix
This branch contains a bug fix for the way devicetree code identifies
the type of device. Device drivers can contain a list of
of_device_ids, but it more than one entry will match, then the device
driver may choose the wrong one. Commit 105353145e, "match each node
compatible against all given matches first", was queued for v3.14 but
ended up causing other bugs. Commit 06b29e76a7 attempted to fix it
but it had other bugs. Merely reverting the fix and waiting until
v3.15 isn't a good option because there is code in v3.14 that depends
on the revised behaviour to boot.
This branch should finally fixes the problem correctly. This time
instead of just hoping that the patch is correct, this branch also
adds new testcases that validate the behaviour.
The changes in this branch are larger than I would like for a -rc
pull, but moving the test case data out of out of arch/arm so that it
could be validated on other architectures was important"
* tag 'dt-for-linus' of git://git.secretlab.ca/git/linux:
of: Add self test for of_match_node()
of: Move testcase FDT data into drivers/of
of: reimplement the matching method for __of_match_node()
Revert "of: search the best compatible match first in __of_match_node()"
Pull watchdog fix from Wim Van Sebroeck:
"It corrects the error code when no device was found for w83697hf_wdt"
* git://www.linux-watchdog.org/linux-watchdog:
watchdog: w83697hf_wdt: return ENODEV if no device was found
Enabling SPARSE_IRQ shows up a bug in the irq-orion bridge interrupt
handler. The bridge interrupt is implemented using a single generic
chip. Thus the parameter passed to irq_get_domain_generic_chip()
should always be zero.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Fixes: 9dbd90f17e ("irqchip: Add support for Marvell Orion SoCs")
Cc: <stable@vger.kernel.org> # v3.11+
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
This patch updates the CBOX PMU filters mapping tables for SNB-EP
and IVT (model 45 and 62 respectively).
The NID umask always comes in addition to another umask.
When set, the NID filter is applied.
The current mapping tables were missing some code/umask
combinations to account for the NID umask. This patch
fixes that.
Cc: mingo@elte.hu
Cc: ak@linux.intel.com
Reviewed-by: Yan, Zheng <zheng.z.yan@intel.com>
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20140219131018.GA24475@quad
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
The current code simply assumes Intel Arch PerfMon v2+ to have
the IA32_PERF_CAPABILITIES MSR; the SDM specifies that we should check
CPUID[1].ECX[15] (aka, FEATURE_PDCM) instead.
This was found by KVM which implements v2+ but didn't provide the
capabilities MSR. Change the code to DTRT; KVM will also implement the
MSR and return 0.
Cc: pbonzini@redhat.com
Reported-by: "Michael S. Tsirkin" <mst@redhat.com>
Suggested-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20140203132903.GI8874@twins.programming.kicks-ass.net
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
When using BTS on Core i7-4*, I get the below kernel warning.
$ perf record -c 1 -e branches:u ls
Message from syslogd@labpc1501 at Nov 11 15:49:25 ...
kernel:[ 438.317893] Uhhuh. NMI received for unknown reason 31 on CPU 2.
Message from syslogd@labpc1501 at Nov 11 15:49:25 ...
kernel:[ 438.317920] Do you have a strange power saving mode enabled?
Message from syslogd@labpc1501 at Nov 11 15:49:25 ...
kernel:[ 438.317945] Dazed and confused, but trying to continue
Make intel_pmu_handle_irq() take the full exit path when returning early.
Cc: eranian@google.com
Cc: peterz@infradead.org
Cc: mingo@kernel.org
Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1392425048-5309-1-git-send-email-andi@firstfloor.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
ENDPTFLUSH and ENDPTPRIME registers are set by software and clear
by hardware. There is a bit for each endpoint. When we are setting
a bit for an endpoint we should make sure we do not touch other
endpoint bit. There is a race condition if the hardware clear the
bit between the read and the write in hw_write.
Cc: stable <stable@vger.kernel.org> # 3.11+
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Matthieu CASTET <matthieu.castet@parrot.com>
Tested-by: Michael Grzeschik <mgrzeschik@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The change (008fa749e0) that moved the
node release code to a separate function broke death notifications in
some cases. When it encountered a reference without a death
notification request, it would skip looking at the remaining
references, and therefore fail to send death notifications for them.
Cc: Colin Cross <ccross@android.com>
Cc: Android Kernel Team <kernel-team@android.com>
Cc: stable <stable@vger.kernel.org> # 3.10
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In deadline class we do not have group scheduling like in RT.
dl_nr_total is the same as dl_nr_running. So, one of them should
be removed.
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Juri Lelli <juri.lelli@gmail.com>
Signed-off-by: Kirill Tkhai <tkhai@yandex.ru>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/368631392675853@web20h.yandex.ru
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
A hot-removed CPU may have ID that is numerically larger than the number of
existing CPUs in the system (e.g. we can unplug CPU 4 from a system that
has CPUs 0, 1 and 4).
Thus the WARN_ONs should check whether the CPU in question is currently
present, not whether its ID value is less than num_present_cpus().
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Juri Lelli <juri.lelli@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Reported-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1392646353-1874-1-git-send-email-boris.ostrovsky@oracle.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Because of a recent syscall design debate; its deemed appropriate for
each syscall to have a flags argument for future extension; without
immediately requiring new syscalls.
Cc: juri.lelli@gmail.com
Cc: Ingo Molnar <mingo@redhat.com>
Suggested-by: Michael Kerrisk <mtk.manpages@gmail.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20140214161929.GL27965@twins.programming.kicks-ass.net
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
We're copying the on-stack structure to userspace, but forgot to give
the right number of bytes to copy. This allows the calling process to
obtain up to PAGE_SIZE bytes from the stack (and possibly adjacent
kernel memory).
This fix copies only as much as we actually have on the stack
(attr->size defaults to the size of the struct) and leaves the rest of
the userspace-provided buffer untouched.
Found using kmemcheck + trinity.
Fixes: d50dde5a10 ("sched: Add new scheduler syscalls to support an extended scheduling parameters ABI")
Cc: Dario Faggioli <raistlin@linux.it>
Cc: Juri Lelli <juri.lelli@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1392585857-10725-1-git-send-email-vegard.nossum@oracle.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Normally task_numa_work scans over a fairly small amount of memory,
but it is possible to run into a large unpopulated part of virtual
memory, with no pages mapped. In that case, task_numa_work can run
for a while, and it may make sense to reschedule as required.
Cc: akpm@linux-foundation.org
Cc: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Rik van Riel <riel@redhat.com>
Reported-by: Xing Gang <gang.xing@hp.com>
Tested-by: Chegu Vinod <chegu_vinod@hp.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1392761566-24834-2-git-send-email-riel@redhat.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Fix this lockdep warning:
[ 44.804600] =========================================================
[ 44.805746] [ INFO: possible irq lock inversion dependency detected ]
[ 44.805746] 3.14.0-rc2-test+ #14 Not tainted
[ 44.805746] ---------------------------------------------------------
[ 44.805746] bash/3674 just changed the state of lock:
[ 44.805746] (&dl_b->lock){+.....}, at: [<ffffffff8106ad15>] sched_rt_handler+0x132/0x248
[ 44.805746] but this lock was taken by another, HARDIRQ-safe lock in the past:
[ 44.805746] (&rq->lock){-.-.-.}
and interrupts could create inverse lock ordering between them.
[ 44.805746]
[ 44.805746] other info that might help us debug this:
[ 44.805746] Possible interrupt unsafe locking scenario:
[ 44.805746]
[ 44.805746] CPU0 CPU1
[ 44.805746] ---- ----
[ 44.805746] lock(&dl_b->lock);
[ 44.805746] local_irq_disable();
[ 44.805746] lock(&rq->lock);
[ 44.805746] lock(&dl_b->lock);
[ 44.805746] <Interrupt>
[ 44.805746] lock(&rq->lock);
by making dl_b->lock acquiring always IRQ safe.
Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: Juri Lelli <juri.lelli@gmail.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1392107067-19907-3-git-send-email-juri.lelli@gmail.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Don't compare sysctl_sched_rt_runtime against sysctl_sched_rt_period if
the former is equal to RUNTIME_INF, otherwise disabling -rt bandwidth
management (with CONFIG_RT_GROUP_SCHED=n) fails.
Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: Juri Lelli <juri.lelli@gmail.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1392107067-19907-2-git-send-email-juri.lelli@gmail.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
While debugging the crash with the bad nr_running accounting, I hit
another bug where, after running my sched deadline test, I was getting
failures to take a CPU offline. It was giving me a -EBUSY error.
Adding a bunch of trace_printk()s around, I found that the cpu
notifier that called sched_cpu_inactive() was returning a failure. The
overflow value was coming up negative?
Talking this over with Juri, the problem is that the total_bw update was
suppose to be made by dl_overflow() which, during my tests, seemed to
not be called. Adding more trace_printk()s, it wasn't that it wasn't
called, but it exited out right away with the check of new_bw being
equal to p->dl.dl_bw. The new_bw calculates the ratio between period and
runtime. The bug is that if you set a deadline, you do not need to set
a period if you plan on the period being equal to the deadline. That
is, if period is zero and deadline is not, then the system call should
set the period to be equal to the deadline. This is done elsewhere in
the code.
The fix is easy, check if period is set, and if it is not, then use the
deadline.
Cc: Juri Lelli <juri.lelli@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20140219135335.7e74abd4@gandalf.local.home
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
