Make it possible that userspace can query all performance domains and
its signals. This information is needed to sample those signals via
submit ioctl.
At the moment no performance domain is available.
Changes from v1 -> v2:
- use a 16 bit value for signals
- fix padding issues
- add id member to domain and signal struct
Changes v4 -> v5
- provide for each pipe an own set of pm domains
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
This makes it possible to allocate multiple events under the event
spinlock. This change is needed to support 'sync'-points.
Changes v2 -> v3:
- wait for the completion of all events
- use 10sec timeout regardless of the number of events
- removed validation if there are enough free events
- fixed return value evaluation of event_alloc(..) in etnaviv_gpu_submit(..)
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
This is prep work to be able to allocate multiple events in one go.
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
The reset path wants to initialize the clock control register regardless
of the DYNAMIC_FREQUENCY_SCALING feature, so don't call clock update, but
explicitly load the register.
Also disabling of the debug registers is moved into the reset function,
so we always get to the same state after a GPU reset. This means the
clock update function should not touch the bits already set in the clock
control register, but instead only update the scaling bits.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Using the IOMMU API to manage the internal GPU MMU has been an
historical accident and it keeps getting in the way, as well as
entangling the driver with the inner workings of the IOMMU
subsystem.
Clean this up by removing the usage of iommu_domain, which is the
last piece linking etnaviv to the IOMMU subsystem.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
And clean up the header file a bit.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-By: Wladimir J. van der Laan <laanwj@gmail.com>
This is a preparation to remove the etnaviv dependency on the IOMMU
subsystem by importing the relevant parts of the iommu map/unamp
functions into the driver.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-By: Wladimir J. van der Laan <laanwj@gmail.com>
It wasn't protecting anything, as the single word writes used to
set up or tear down a translation are already inherently atomic,
so the spinlock is pure overhead.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-By: Wladimir J. van der Laan <laanwj@gmail.com>
A function doing a single assignment is not really helping the
code flow.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-By: Wladimir J. van der Laan <laanwj@gmail.com>
Those functions are simple enough to fold them into the calling
function. This also fixes a correctness issue, as the alloc/free
functions didn't specifiy the device the memory was allocated for.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-By: Wladimir J. van der Laan <laanwj@gmail.com>
They are not used in any way, so can go away.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-By: Wladimir J. van der Laan <laanwj@gmail.com>
The handler has never been used, so it's really just dead code.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-By: Wladimir J. van der Laan <laanwj@gmail.com>
GFP_TEMPORARY was introduced by commit e12ba74d8f ("Group short-lived
and reclaimable kernel allocations") along with __GFP_RECLAIMABLE. It's
primary motivation was to allow users to tell that an allocation is
short lived and so the allocator can try to place such allocations close
together and prevent long term fragmentation. As much as this sounds
like a reasonable semantic it becomes much less clear when to use the
highlevel GFP_TEMPORARY allocation flag. How long is temporary? Can the
context holding that memory sleep? Can it take locks? It seems there is
no good answer for those questions.
The current implementation of GFP_TEMPORARY is basically GFP_KERNEL |
__GFP_RECLAIMABLE which in itself is tricky because basically none of
the existing caller provide a way to reclaim the allocated memory. So
this is rather misleading and hard to evaluate for any benefits.
I have checked some random users and none of them has added the flag
with a specific justification. I suspect most of them just copied from
other existing users and others just thought it might be a good idea to
use without any measuring. This suggests that GFP_TEMPORARY just
motivates for cargo cult usage without any reasoning.
I believe that our gfp flags are quite complex already and especially
those with highlevel semantic should be clearly defined to prevent from
confusion and abuse. Therefore I propose dropping GFP_TEMPORARY and
replace all existing users to simply use GFP_KERNEL. Please note that
SLAB users with shrinkers will still get __GFP_RECLAIMABLE heuristic and
so they will be placed properly for memory fragmentation prevention.
I can see reasons we might want some gfp flag to reflect shorterm
allocations but I propose starting from a clear semantic definition and
only then add users with proper justification.
This was been brought up before LSF this year by Matthew [1] and it
turned out that GFP_TEMPORARY really doesn't have a clear semantic. It
seems to be a heuristic without any measured advantage for most (if not
all) its current users. The follow up discussion has revealed that
opinions on what might be temporary allocation differ a lot between
developers. So rather than trying to tweak existing users into a
semantic which they haven't expected I propose to simply remove the flag
and start from scratch if we really need a semantic for short term
allocations.
[1] http://lkml.kernel.org/r/20170118054945.GD18349@bombadil.infradead.org
[akpm@linux-foundation.org: fix typo]
[akpm@linux-foundation.org: coding-style fixes]
[sfr@canb.auug.org.au: drm/i915: fix up]
Link: http://lkml.kernel.org/r/20170816144703.378d4f4d@canb.auug.org.au
Link: http://lkml.kernel.org/r/20170728091904.14627-1-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Mel Gorman <mgorman@suse.de>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Neil Brown <neilb@suse.de>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
this cycle has been fairly calm in etnaviv land with most of the action
happening on the userspace side.
Notable changes:
- Improvements to CONFIG option handling to make it harder for users to
shoot themselves in the foot due to kernel misconfiguration.
- Tweaked GEM object population, so that userspace can take considerate
action when memory allocation fails, rather than waking the raging OOM
killer beast.
* 'etnaviv/next' of https://git.pengutronix.de/git/lst/linux:
drm/etnaviv: switch GEM allocations to __GFP_RETRY_MAYFAIL
drm/etnaviv: don't fail GPU bind when CONFIG_THERMAL isn't enabled
drm/etnaviv: switch to drm_*{get,put} helpers
drm/etnaviv: select CMA and DMA_CMA if available
drm/etnaviv: populate GEM objects on cpu_prep
drm/etnaviv: reduce allocation failure message severity
drm/etnaviv: don't trigger OOM killer when page allocation fails
Now that we have a GFP flags with the expected semantic of "try reasonably
hard to find memory, but don't OOM", we should start to use it.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
The stub functions returns -ENODEV when trying to register the cooling device,
thus failing the GPU bind, rendering the GPU subsystem unusable when
CONFIG_THERMAL isn't enabled.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
A relocation pointing to the last four bytes of a buffer can
legitimately happen in the case of small vertex buffers.
CC: stable@vger.kernel.org #4.9+
Signed-off-by: Wladimir J. van der Laan <laanwj@gmail.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
drm_*_reference() and drm_*_unreference() functions are just
compatibility alias for drm_*_get() and drm_*_put() adn should not be
used by new code. So convert all users of compatibility functions to use
the new APIs.
Signed-off-by: Cihangir Akturk <cakturk@gmail.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
While this is no build dependency, etnaviv will only work correctly on most
systems if CMA and DMA_CMA are enabled. Select both options if available to
avoid users ending up with a non-working GPU due to a lacking kernel config.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
-----BEGIN PGP SIGNATURE-----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=2S5N
-----END PGP SIGNATURE-----
Merge tag 'drm-for-v4.13' of git://people.freedesktop.org/~airlied/linux
Pull drm updates from Dave Airlie:
"This is the main pull request for the drm, I think I've got one later
driver pull for mediatek SoC driver, I'm undecided on if it needs to
go to you yet.
Otherwise summary below:
Core drm:
- Atomic add driver private objects
- Deprecate preclose hook in modern drivers
- MST bandwidth tracking
- Use kvmalloc in more places
- Add mode_valid hook for crtc/encoder/bridge
- Reduce sync_file construction time
- Documentation updates
- New DRM synchronisation object support
New drivers:
- pl111 - pl111 CLCD display controller
Panel:
- Innolux P079ZCA panel driver
- Add NL12880B20-05, NL192108AC18-02D, P320HVN03 panels
- panel-samsung-s6e3ha2: Add s6e3hf2 panel support
i915:
- SKL+ watermark fixes
- G4x/G33 reset improvements
- DP AUX backlight improvements
- Buffer based GuC/host communication
- New getparam for (sub)slice infomation
- Cannonlake and Coffeelake initial patches
- Execbuf optimisations
radeon/amdgpu:
- Lots of Vega10 bug fixes
- Preliminary raven support
- KIQ support for compute rings
- MEC queue management rework
- DCE6 Audio support
- SR-IOV improvements
- Better radeon/amdgpu selection support
nouveau:
- HDMI stereoscopic support
- Display code rework for >= GM20x GPUs
msm:
- GEM rework for fine-grained locking
- Per-process pagetable work
- HDMI fixes for Snapdragon 820.
vc4:
- Remove 256MB CMA limit from vc4
- Add out-fence support
- Add support for cygnus
- Get/set tiling ioctls support
- Add T-format tiling support for scanout
zte:
- add VGA support.
etnaviv:
- Thermal throttle support for newer GPUs
- Restore userspace buffer cache performance
- dma-buf sync fix
stm:
- add stm32f429 display support
exynos:
- Rework vblank handling
- Fixup sw-trigger code
sun4i:
- V3s display engine support
- HDMI support for older SoCs
- Preliminary work on dual-pipeline SoCs.
rcar-du:
- VSP work
imx-drm:
- Remove counter load enable from PRE
- Double read/write reduction flag support
tegra:
- Documentation for the host1x and drm driver.
- Lots of staging ioctl fixes due to grate project work.
omapdrm:
- dma-buf fence support
- TILER rotation fixes"
* tag 'drm-for-v4.13' of git://people.freedesktop.org/~airlied/linux: (1270 commits)
drm: Remove unused drm_file parameter to drm_syncobj_replace_fence()
drm/amd/powerplay: fix bug fail to remove sysfs when rmmod amdgpu.
amdgpu: Set cik/si_support to 1 by default if radeon isn't built
drm/amdgpu/gfx9: fix driver reload with KIQ
drm/amdgpu/gfx8: fix driver reload with KIQ
drm/amdgpu: Don't call amd_powerplay_destroy() if we don't have powerplay
drm/ttm: Fix use-after-free in ttm_bo_clean_mm
drm/amd/amdgpu: move get memory type function from early init to sw init
drm/amdgpu/cgs: always set reference clock in mode_info
drm/amdgpu: fix vblank_time when displays are off
drm/amd/powerplay: power value format change for Vega10
drm/amdgpu/gfx9: support the amdgpu.disable_cu option
drm/amd/powerplay: change PPSMC_MSG_GetCurrPkgPwr for Vega10
drm/amdgpu: Make amdgpu_cs_parser_init static (v2)
drm/amdgpu/cs: fix a typo in a comment
drm/amdgpu: Fix the exported always on CU bitmap
drm/amdgpu/gfx9: gfx_v9_0_enable_gfx_static_mg_power_gating() can be static
drm/amdgpu/psp: upper_32_bits/lower_32_bits for address setup
drm/amd/powerplay/cz: print message if smc message fails
drm/amdgpu: fix typo in amdgpu_debugfs_test_ib_init
...
CPU prep is the point where we can reasonably return an error to userspace
when something goes wrong while populating the object. If we leave the
object unpopulated at this point, the allocation will happen in the
fault handler when userspace accesses the object through the mmap space,
where we don't have any other option than to OOM the system.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
The GPU userspace is expected to deal with failure to allocate memory for
the GPU buffers, there is no need to spam the log on failure.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
GPU buffers can be quite large, so userspace is expected to deal with
allocation failure. Don't trigger the OOM killer when page allocation for
the GEM objects fails, as this opens an easy possiblity for unprivileged
applications to DOS the system,a s the shmem pages are not fully accounted
to the allocating process.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Pull drm/etnaviv fixes from Lucas Stach:
"I realized I just missed the cut-off point for the final drm fixes
pull, but I have 2 more etnaviv fixes that need to go into 4.12, as
they fix fallout from the explicit sync work introduced in the last
merge window"
[ Pulling directly because Dave is on vacation. Noted by Daniel Vetter,
and acked by Dave Airlie - Linus ]
* 'etnaviv/fixes' of git://git.pengutronix.de/git/lst/linux:
drm/etnaviv: Fix implicit/explicit sync sense inversion
drm/etnaviv: fix submit flags getting overwritten by BO content
We were reading the no-implicit sync flag the wrong way around,
synchronizing too much for the explicit case, and not at all for the
implicit case. Oops.
Signed-off-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
The addition of the flags member to etnaviv_gem_submit structure didn't
take into account that the last member of this structure is a variable
length array.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
- a fix from Eric for synchronization with etnaviv exported dma-bufs
- thermal throttle support for newer GPU cores
- updated module clock gating to work around GPU errata
- a fix to restore userspace buffer cache performance
* 'etnaviv/next' of https://git.pengutronix.de/git/lst/linux:
drm/etnaviv: restore ETNA_PREP_NOSYNC behaviour
drm/etnaviv: implement cooling support for new GPU cores
drm/etnaviv: update MLCG disables with info from newer Vivante driver
drm/etnaviv: update common.xml.h
drm/etnaviv: Expose our reservation object when exporting a dmabuf.
This reverts commit cd34db4a52 (drm/etnaviv: Remove manual call to
reservation_object_test_signaled_rcu before wait), as the patch to turn
reservation_object_wait_timeout_rcu() into
reservation_object_test_signaled_rcu() with a 0 timeout has been reverted.
This causes the driver to call into the fence wait, even with a timeout of 0
The etnaviv BO cache depends on ETNA_PREP_NOSYNC to be wait-free, even if
the BO has attached fences, so restore the behaviour for this flag.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
-----BEGIN PGP SIGNATURE-----
iQEcBAABAgAGBQJZK2lrAAoJEHm+PkMAQRiGm3AH/13F1DlIk05aSXHoDr/idIpR
GMHmk3YF+EuFjsL463Sh6s/SSWmz0Lda8euaoB4wCWvQFX2ZjTE+aOd79XlRiZJQ
OTtLkV9I41eXIJUpEOHia7xZiCsbw+usqcHrm1aBoSh5KKV2iQmEOrnJdibqJVOF
eXUMphNK/zFtAd2bKtQSxkaBnOOqsQUgVQSkr2K9rSg25l0KokFC6c5K5IjLn4x9
QgDY4wmMvHrDz0CtpoqlNM4XqbsDJVrFeZGfg6hlMqSRDeXeg4h3Ol0VfIT496RP
QBdrDb6hWO+HKt9B0M+7Q+8a/Fsw+5dtpqv1W/Wlr0i4CS6euU8NChAmrpkrqGo=
=m5ba
-----END PGP SIGNATURE-----
Backmerge tag 'v4.12-rc3' into drm-next
Linux 4.12-rc3
Daniel has requested this for some drm-intel-next work.
Now that drm_[cm]alloc* helpers are simple one line wrappers around
kvmalloc_array and drm_free_large is just kvfree alias we can drop
them and replace by their native forms.
This shouldn't introduce any functional change.
Changes since v1
- fix typo in drivers/gpu//drm/etnaviv/etnaviv_gem.c - noticed by 0day
build robot
Suggested-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Michal Hocko <mhocko@suse.com>drm: drop drm_[cm]alloc* helpers
[danvet: Fixup vgem which grew another user very recently.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Christian König <christian.koenig@amd.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170517122312.GK18247@dhcp22.suse.cz
__vmalloc* allows users to provide gfp flags for the underlying
allocation. This API is quite popular
$ git grep "=[[:space:]]__vmalloc\|return[[:space:]]*__vmalloc" | wc -l
77
The only problem is that many people are not aware that they really want
to give __GFP_HIGHMEM along with other flags because there is really no
reason to consume precious lowmemory on CONFIG_HIGHMEM systems for pages
which are mapped to the kernel vmalloc space. About half of users don't
use this flag, though. This signals that we make the API unnecessarily
too complex.
This patch simply uses __GFP_HIGHMEM implicitly when allocating pages to
be mapped to the vmalloc space. Current users which add __GFP_HIGHMEM
are simplified and drop the flag.
Link: http://lkml.kernel.org/r/20170307141020.29107-1-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Cc: Cristopher Lameter <cl@linux.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
GPU cores with the DYNAMIC_FREQUENCY_SCALING feature bit set expect the
platform to provide the clock scaling and ignore any requests to use the
internal FSCALE divider. Writes to this register still work, but don't
have any effect on the GPU clock frequency.
Save the initial core and shader clock frequency and ask the platform
to provide a slower clock when cooling is requested.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
PA clock gating can be enabled when the right bugfix bit is present.
There are broken revs of GC4000 and GC2000, which need TX clock gating
to be disabled.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Without this, polling on the dma-buf (and presumably other devices
synchronizing against our rendering) would return immediately, even
while the BO was busy.
Signed-off-by: Eric Anholt <eric@anholt.net>
Cc: stable@vger.kernel.org
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Russell King <linux+etnaviv@armlinux.org.uk>
Cc: Christian Gmeiner <christian.gmeiner@gmail.com>
Cc: etnaviv@lists.freedesktop.org
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
If we bail out of the submit before actually adding the cmdstream
to the kernel ring there is no valid fence to put. Make sure to skip
the fence_put in that case.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
-----BEGIN PGP SIGNATURE-----
iQEcBAABAgAGBQJY881cAAoJEHm+PkMAQRiGG4UH+wa2z6Qet36Uc4nXFZuSMYrO
ErUWs1QpTDDv4a+LE4fgyMvM3j9XqtpfQLy1n70jfD14IqPBhHe4gytasAf+8lg1
YvddFx0Yl3sygVu3dDBNigWeVDbfwepW59coN0vI5nrMo+wrei8aVIWcFKOxdMuO
n72u9vuhrkEnLJuQk7SF+t4OQob9McXE3s7QgyRopmlKhKo7mh8On7K2BRI5uluL
t0j5kZM0a43EUT5rq9xR8f5pgtyfTMG/FO2MuzZn43MJcZcyfmnOP/cTSIvAKA5U
1i12lxlokYhURNUe+S6jm8A47TrqSRSJxaQJZRlfGJksZ0LJa8eUaLDCviBQEoE=
=6QWZ
-----END PGP SIGNATURE-----
Merge tag 'v4.11-rc7' into drm-next
Backmerge Linux 4.11-rc7 from Linus tree, to fix some
conflicts that were causing problems with the rerere cache
in drm-tip.
Add the missing unlock before return from function etnaviv_gpu_submit()
in the error handling case.
lst: fixed label name.
Fixes: f3cd1b064f ("drm/etnaviv: (re-)protect fence allocation with
GPU mutex")
CC: stable@vger.kernel.org #4.9+
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
-----BEGIN PGP SIGNATURE-----
iQEcBAABAgAGBQJY6mY1AAoJEHm+PkMAQRiGB14IAImsH28JPjxJVDasMIRPBxVc
euPPlZgoBieu7sNt+kEsEqdkXuu0MLk6gln0IGxWLeoB2S+u3Tz5LMa2YArVqV9Z
tWzOnI9auE73P2Pz/tUMOdyMs5tO0PolQxX3uljbULBozOHjHRh13fsXchX2yQvl
mFeFCDqpPV0KhWRH/ciA8uIHdvYPhMpkKgRtmR8jXL0yzqLp6+2J+Bs8nHG4NNng
HMVxZPC8jOE/TgWq6k/GmXgxh3H/AideFdHFbLKYnIFJW41ZGOI8a262zq3NmjPd
lywpVU7O7RMhSITY5PnuR3LpNV8ftw1hz2y6t35unyFK1P02adOSj5GJ3hGdhaQ=
=Xz5O
-----END PGP SIGNATURE-----
Backmerge tag 'v4.11-rc6' into drm-next
Linux 4.11-rc6
drm-misc needs 4.11-rc5, may as well fix conflicts with rc6.
Based on commit 4cd0945901 ("drm/msm: submit support for out-fences").
We increment the minor driver version so userspace can detect explicit
fence support.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
---
v3: Changed to work with fence returned from GPU submit.
The next patch will need the complete dma_fence, instead of just the seqno,
to create the sync_file in etnaviv_ioctl_gem_submit, in case an
out_fence_fd is requested.
The submit needs to hold a reference to the dma_fence, to avoid raceing
with the GPU completing the fence.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Tested-by: Philipp Zabel <p.zabel@pengutronix.de>
---
New patch in v3.
Loosely based on commit f0a42bb542 ("drm/msm: submit support for
in-fences"). Unfortunately, struct drm_etnaviv_gem_submit doesn't have
a flags field yet, so we have to extend the structure and trust that
drm_ioctl will clear the flags for us if an older userspace only submits
part of the struct.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.com>
Reviewed-by: Sumit Semwal <sumit.semwal@linaro.org>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Each Vivante GPU contains a clock divider which can divide the GPU clock
by 2^n, which can lower the power dissipation from the GPU. It has been
suggested that the GC600 on Dove is responsible for 20-30% of the power
dissipation from the SoC, so lowering the GPU clock rate provides a way
to throttle the power dissiptation, and reduce the temperature when the
SoC gets hot.
This patch hooks the Etnaviv driver into the kernel's thermal management
to allow the GPUs to be throttled when necessary, allowing a reduction in
GPU clock rate from /1 to /64 in power of 2 steps.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
I didn't spot anything that would require ordering here (well not
anywhere else either), and I'm trying to unify at least modern drivers
on one close hook.
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Russell King <linux+etnaviv@armlinux.org.uk>
Cc: Christian Gmeiner <christian.gmeiner@gmail.com>
Cc: etnaviv@lists.freedesktop.org
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Acked-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
The fence allocation needs to be protected by the GPU mutex, otherwise
the fence seqnos of concurrent submits might not match the insertion order
of the jobs in the kernel ring. This breaks the assumption that jobs
complete with monotonically increasing fence seqnos.
Fixes: d985349017 (drm/etnaviv: take GPU lock later in the submit process)
CC: stable@vger.kernel.org #4.9+
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
But first update usage sites with the new header dependency.
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
We are going to split <linux/sched/mm.h> out of <linux/sched.h>, which
will have to be picked up from other headers and a couple of .c files.
Create a trivial placeholder <linux/sched/mm.h> file that just
maps to <linux/sched.h> to make this patch obviously correct and
bisectable.
The APIs that are going to be moved first are:
mm_alloc()
__mmdrop()
mmdrop()
mmdrop_async_fn()
mmdrop_async()
mmget_not_zero()
mmput()
mmput_async()
get_task_mm()
mm_access()
mm_release()
Include the new header in the files that are going to need it.
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
->fault(), ->page_mkwrite(), and ->pfn_mkwrite() calls do not need to
take a vma and vmf parameter when the vma already resides in vmf.
Remove the vma parameter to simplify things.
[arnd@arndb.de: fix ARM build]
Link: http://lkml.kernel.org/r/20170125223558.1451224-1-arnd@arndb.de
Link: http://lkml.kernel.org/r/148521301778.19116.10840599906674778980.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Darrick J. Wong <darrick.wong@oracle.com>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jan Kara <jack@suse.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
