77d1a6dbe8
drm/syncobj: Add documentation for timeline syncobj
...
We've added a set of new APIs to manipulate syncobjs holding timelines
of dma_fence. This adds a bit of documentation about how this works.
v2: Small language nits (Lionel)
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com >
Reviewed-by: Christian König <christian.koenig@amd.com >
Link: https://patchwork.freedesktop.org/patch/348578/
Cc: Christian Koenig <Christian.Koenig@amd.com >
Cc: Jason Ekstrand <jason@jlekstrand.net >
Cc: David(ChunMing) Zhou <David1.Zhou@amd.com >
Signed-off-by: Christian König <christian.koenig@amd.com >
2020-01-20 14:22:21 +01:00
2093dea3de
drm/syncobj: extend syncobj query ability v3
...
user space needs a flexiable query ability.
So that umd can get last signaled or submitted point.
v2:
add sanitizer checking.
v3:
rebase
Change-Id: I6512b430524ebabe715e602a2bf5abb0a7e780ea
Signed-off-by: Chunming Zhou <david1.zhou@amd.com >
Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com >
Cc: Christian König <Christian.Koenig@amd.com >
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com >
Signed-off-by: Christian König <christian.koenig@amd.com >
Link: https://patchwork.freedesktop.org/series/64044/
2019-10-18 12:24:56 +02:00
b9436986d2
drm/syncobj: Include the prototype for drm_timeout_abs_to_jiffies()
...
Sparse complains:
../drivers/gpu/drm/drm_syncobj.c:942:13: warning: symbol 'drm_timeout_abs_to_jiffies' was not declared. Should it be static?
Include the correct header with the prototype.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com >
Link: https://patchwork.freedesktop.org/patch/msgid/20190710125143.9965-4-ville.syrjala@linux.intel.com
Reviewed-by: Sean Paul <sean@poorly.run >
2019-09-30 20:17:00 +03:00
f246ff5c23
drm/syncobj: Add better overview documentation for syncobj (v2)
...
This patch only brings the syncobj documentation up-to-date for the
original form of syncobj. It does not contain any information about the
design of timeline syncobjs.
v2: Incorporate feedback from Lionel and Christian:
- Mention actual ioctl and flag names
- Better language around reference counting
- Misc. language cleanups
Signed-off-by: Jason Ekstrand <jason@jlekstrand.net >
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com >
Acked-by: Christian König <christian.koenig@amd.com >
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com >
Link: https://patchwork.freedesktop.org/patch/msgid/20190812142211.15885-1-jason@jlekstrand.net
2019-08-12 16:58:52 +02:00
b33b556ce5
drm/syncobj: fix leaking dma_fence in drm_syncobj_query_ioctl
...
We need to check the context number instead if the previous sequence to detect
an error and if an error is detected we need to drop the reference to the
current fence or otherwise would leak it.
Signed-off-by: Christian König <christian.koenig@amd.com >
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com >
Fixes: 27b575a9aahttps://patchwork.freedesktop.org/patch/319123/
2019-07-30 12:27:39 +02:00
d89281c5ed
drm: direct include of drm.h in drm_syncobj.c
...
Do not rely on including drm.h from drm_file.h,
as the include in drm_file.h will be dropped.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org >
Reviewed-by: Sean Paul <sean@poorly.run >
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com >
Cc: Maxime Ripard <maxime.ripard@bootlin.com >
Cc: David Airlie <airlied@linux.ie >
Cc: Daniel Vetter <daniel@ffwll.ch >
Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com >
Cc: Chunming Zhou <david1.zhou@amd.com >
Cc: Christian König <ckoenig.leichtzumerken@gmail.com >
Link: https://patchwork.freedesktop.org/patch/msgid/20190718161507.2047-10-sam@ravnborg.org
2019-07-19 23:24:17 +02:00
0500c04ea1
drm: drop use of drmP.h in drm/*
...
The use of the drmP.h header file is deprecated.
Remove use from all files in drm/*
so people do not look there and follow a bad example.
Build tested allyesconfig,allmodconfig on x86, arm etc.
Including alpha that is as always more challenging than
the rest.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org >
Acked-by: Daniel Vetter <daniel@ffwll.ch >
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com >
Cc: Maxime Ripard <maxime.ripard@bootlin.com >
Cc: Sean Paul <sean@poorly.run >
Cc: David Airlie <airlied@linux.ie >
Link: https://patchwork.freedesktop.org/patch/msgid/20190526173535.32701-8-sam@ravnborg.org
2019-05-27 18:07:03 +02:00
a2d635decb
Merge tag 'drm-next-2019-05-09' of git://anongit.freedesktop.org/drm/drm
...
Pull drm updates from Dave Airlie:
"This has two exciting community drivers for ARM Mali accelerators.
Since ARM has never been open source friendly on the GPU side of the
house, the community has had to create open source drivers for the
Mali GPUs. Lima covers the older t4xx and panfrost the newer 6xx/7xx
series. Well done to all involved and hopefully this will help ARM
head in the right direction.
There is also now the ability if you don't have any of the legacy
drivers enabled (pre-KMS) to remove all the pre-KMS support code from
the core drm, this saves 10% or so in codesize on my machine.
i915 also enable Icelake/Elkhart Lake Gen11 GPUs by default, vboxvideo
moves out of staging.
There are also some rcar-du patches which crossover with media tree
but all should be acked by Mauro.
Summary:
uapi changes:
- Colorspace connector property
- fourcc - new YUV formts
- timeline sync objects initially merged
- expose FB_DAMAGE_CLIPS to atomic userspace
new drivers:
- vboxvideo: moved out of staging
- aspeed: ASPEED SoC BMC chip display support
- lima: ARM Mali4xx GPU acceleration driver support
- panfrost: ARM Mali6xx/7xx Midgard/Bitfrost acceleration driver support
core:
- component helper docs
- unplugging fixes
- devm device init
- MIPI/DSI rate control
- shmem backed gem objects
- connector, display_info, edid_quirks cleanups
- dma_buf fence chain support
- 64-bit dma-fence seqno comparison fixes
- move initial fb config code to core
- gem fence array helpers for Lima
- ability to remove legacy support code if no drivers requires it (removes 10% of drm.ko size)
- lease fixes
ttm:
- unified DRM_FILE_PAGE_OFFSET handling
- Account for kernel allocations in kernel zone only
panel:
- OSD070T1718-19TS panel support
- panel-tpo-td028ttec1 backlight support
- Ronbo RB070D30 MIPI/DSI
- Feiyang FY07024DI26A30-D MIPI-DSI panel
- Rocktech jh057n00900 MIPI-DSI panel
i915:
- Comet Lake (Gen9) PCI IDs
- Updated Icelake PCI IDs
- Elkhartlake (Gen11) support
- DP MST property addtions
- plane and watermark fixes
- Icelake port sync and VEBOX disable fixes
- struct_mutex usage reduction
- Icelake gamma fix
- GuC reset fixes
- make mmap more asynchronous
- sound display power well race fixes
- DDI/MIPI-DSI clocks for Icelake
- Icelake RPS frequency changing support
- Icelake workarounds
amdgpu:
- Use HMM for userptr
- vega20 experimental smu11 support
- RAS support for vega20
- BACO support for vega12 + fixes for vega20
- reworked IH interrupt handling
- amdkfd RAS support
- Freesync improvements
- initial timeline sync object support
- DC Z ordering fixes
- NV12 planes support
- colorspace properties for planes=
- eDP opts if eDP already initialized
nouveau:
- misc fixes
etnaviv:
- misc fixes
msm:
- GPU zap shader support expansion
- robustness ABI addition
exynos:
- Logging cleanups
tegra:
- Shared reset fix
- CPU cache maintenance fix
cirrus:
- driver rewritten using simple helpers
meson:
- G12A support
vmwgfx:
- Resource dirtying management improvements
- Userspace logging improvements
virtio:
- PRIME fixes
rockchip:
- rk3066 hdmi support
sun4i:
- DSI burst mode support
vc4:
- load tracker to detect underflow
v3d:
- v3d v4.2 support
malidp:
- initial Mali D71 support in komeda driver
tfp410:
- omap related improvement
omapdrm:
- drm bridge/panel support
- drop some omap specific panels
rcar-du:
- Display writeback support"
* tag 'drm-next-2019-05-09' of git://anongit.freedesktop.org/drm/drm: (1507 commits)
drm/msm/a6xx: No zap shader is not an error
drm/cma-helper: Fix drm_gem_cma_free_object()
drm: Fix timestamp docs for variable refresh properties.
drm/komeda: Mark the local functions as static
drm/komeda: Fixed warning: Function parameter or member not described
drm/komeda: Expose bus_width to Komeda-CORE
drm/komeda: Add sysfs attribute: core_id and config_id
drm: add non-desktop quirk for Valve HMDs
drm/panfrost: Show stored feature registers
drm/panfrost: Don't scream about deferred probe
drm/panfrost: Disable PM on probe failure
drm/panfrost: Set DMA masks earlier
drm/panfrost: Add sanity checks to submit IOCTL
drm/etnaviv: initialize idle mask before querying the HW db
drm: introduce a capability flag for syncobj timeline support
drm: report consistent errors when checking syncobj capibility
drm/nouveau/nouveau: forward error generated while resuming objects tree
drm/nouveau/fb/ramgk104: fix spelling mistake "sucessfully" -> "successfully"
drm/nouveau/i2c: Disable i2c bus access after ->fini()
drm/nouveau: Remove duplicate ACPI_VIDEO_NOTIFY_PROBE definition
...
2019-05-08 21:35:19 -07:00
fb38624353
drm_syncobj: switch to fdget()
...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk >
2019-05-02 02:25:54 -04:00
060cebb20c
drm: introduce a capability flag for syncobj timeline support
...
Unfortunately userspace users of this API cannot be publicly disclosed
yet.
This commit effectively disables timeline syncobj ioctls for all
drivers. Each driver wishing to support this feature will need to
expose DRIVER_SYNCOBJ_TIMELINE.
v2: Add uAPI capability check (Christian)
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com >
Reviewed-by: Christian König <christian.koenig@amd.com > (v1)
Cc: Dave Airlie <airlied@redhat.com >
Cc: Daniel Vetter <daniel.vetter@ffwll.ch >
Cc: Christian König <christian.koenig@amd.com >
Cc: Chunming Zhou <david1.zhou@amd.com >
Reviewed-by: Dave Airlie <airlied@redhat.com >
Reviewed-by: Chunming Zhou <david1.zhou@amd.com >
Signed-off-by: Dave Airlie <airlied@redhat.com >
Link: https://patchwork.freedesktop.org/patch/msgid/20190416125750.31370-1-lionel.g.landwerlin@intel.com
2019-05-02 12:36:47 +10:00
5ec776383d
drm: report consistent errors when checking syncobj capibility
...
We've been somewhat inconsistent when adding the new ioctl and
returned ENODEV instead of EOPNOTSUPPORTED upon failing the syncobj
capibility.
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com >
Fixes: ea569910cb01d6c35783airlied@redhat.com >
Cc: Christian König <christian.koenig@amd.com >
Cc: Chunming Zhou <david1.zhou@amd.com >
Reviewed-by: Christian König <christian.koenig@amd.com > for the series.
Reviewed-by: Chunming Zhou <david1.zhou@amd.com >
Signed-off-by: Dave Airlie <airlied@redhat.com >
Link: https://patchwork.freedesktop.org/patch/msgid/20190416123048.2913-1-lionel.g.landwerlin@intel.com
2019-05-02 12:36:42 +10:00
50d1ebef79
drm/syncobj: add timeline signal ioctl for syncobj v5
...
v2: individually allocate chain array, since chain node is free independently.
v3: all existing points must be already signaled before cpu perform signal operation,
so add check condition for that.
v4: remove v3 change and add checking to prevent out-of-order
v5: unify binary and timeline
Signed-off-by: Chunming Zhou <david1.zhou@amd.com >
Signed-off-by: Christian König <christian.koenig@amd.com >
Cc: Tobias Hector <Tobias.Hector@amd.com >
Cc: Jason Ekstrand <jason@jlekstrand.net >
Cc: Dave Airlie <airlied@redhat.com >
Cc: Chris Wilson <chris@chris-wilson.co.uk >
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com >
Link: https://patchwork.freedesktop.org/patch/295792/?series=58813&rev=1
2019-04-01 12:09:00 +02:00
ea569910cb
drm/syncobj: add transition iotcls between binary and timeline v2
...
we need to import/export timeline point.
v2: unify to one transfer ioctl
Signed-off-by: Chunming Zhou <david1.zhou@amd.com >
Signed-off-by: Christian König <christian.koenig@amd.com >
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com >
Link: https://patchwork.freedesktop.org/patch/295790/?series=58813&rev=1
2019-04-01 12:08:44 +02:00
bc9c80fe01
drm/syncobj: use the timeline point in drm_syncobj_find_fence v4
...
Implement finding the right timeline point in drm_syncobj_find_fence.
v2: return -EINVAL when the point is not submitted yet.
v3: fix reference counting bug, add flags handling as well
v4: add timeout for find fence
Signed-off-by: Christian König <christian.koenig@amd.com >
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com >
Link: https://patchwork.freedesktop.org/patch/295786/?series=58813&rev=1
2019-04-01 12:07:16 +02:00
27b575a9aa
drm/syncobj: add timeline payload query ioctl v6
...
user mode can query timeline payload.
v2: check return value of copy_to_user
v3: handle querying entry by entry
v4: rebase on new chain container, simplify interface
v5: query last signaled timeline point, not last point.
v6: add unorder point check
Signed-off-by: Chunming Zhou <david1.zhou@amd.com >
Signed-off-by: Christian König <christian.koenig@amd.com >
Cc: Tobias Hector <Tobias.Hector@amd.com >
Cc: Jason Ekstrand <jason@jlekstrand.net >
Cc: Dave Airlie <airlied@redhat.com >
Cc: Chris Wilson <chris@chris-wilson.co.uk >
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com >
Link: https://patchwork.freedesktop.org/patch/295784/?series=58813&rev=1
2019-04-01 12:06:38 +02:00
01d6c35783
drm/syncobj: add support for timeline point wait v8
...
points array is one-to-one match with syncobjs array.
v2:
add seperate ioctl for timeline point wait, otherwise break uapi.
v3:
userspace can specify two kinds waits::
a. Wait for time point to be completed.
b. and wait for time point to become available
v4:
rebase
v5:
add comment for xxx_WAIT_AVAILABLE
v6: rebase and rework on new container
v7: drop _WAIT_COMPLETED, it is the default anyway
v8: correctly handle garbage collected fences
Signed-off-by: Chunming Zhou <david1.zhou@amd.com >
Signed-off-by: Christian König <christian.koenig@amd.com >
Cc: Tobias Hector <Tobias.Hector@amd.com >
Cc: Jason Ekstrand <jason@jlekstrand.net >
Cc: Dave Airlie <airlied@redhat.com >
Cc: Chris Wilson <chris@chris-wilson.co.uk >
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com >
Link: https://patchwork.freedesktop.org/patch/295782/?series=58813&rev=1
2019-04-01 12:06:11 +02:00
44f8a1396e
drm/syncobj: add new drm_syncobj_add_point interface v4
...
Use the dma_fence_chain object to create a timeline of fence objects
instead of just replacing the existing fence.
v2: rebase and cleanup
v3: fix garbage collection parameters
v4: add unorder point check, print a warn calltrace
Signed-off-by: Christian König <christian.koenig@amd.com >
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com >
Link: https://patchwork.freedesktop.org/patch/295780/?series=58813&rev=1
2019-04-01 12:05:53 +02:00
877b372996
drm: export drm_timeout_abs_to_jiffies
...
For other driver like lima usage.
Cc: Rob Herring <robh@kernel.org >
Signed-off-by: Qiang Yu <yuq825@gmail.com >
Signed-off-by: Rob Herring <robh@kernel.org >
Link: https://patchwork.freedesktop.org/patch/msgid/20190225140717.20586-2-yuq825@gmail.com
2019-03-07 12:00:30 -06:00
61a98b1b9a
drm/syncobj: remove drm_syncobj_cb and cleanup
...
This completes "drm/syncobj: Drop add/remove_callback from driver
interface" and cleans up the implementation a bit.
Signed-off-by: Christian König <christian.koenig@amd.com >
Reviewed-by: Chunming Zhou <david1.zhou@amd.com >
Link: https://patchwork.freedesktop.org/patch/266255/
2018-12-11 17:38:38 +01:00
0b258ed1a2
drm: revert "expand replace_fence to support timeline point v2"
...
This reverts commit 9a09a42369christian.koenig@amd.com >
Reviewed-by: Chunming Zhou <david1.zhou@amd.com >
Link: https://patchwork.freedesktop.org/patch/265580/
2018-12-05 11:01:11 +01:00
86bbd89d5d
drm/syncobj: use dma_fence_get_stub
...
Extract of useful code from the timeline work. Let's use just a single
stub fence instance instead of allocating a new one all the time.
Signed-off-by: Christian König <christian.koenig@amd.com >
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk >
Reviewed-by: Chunming Zhou <david1.zhou@amd.com >
Link: https://patchwork.freedesktop.org/patch/265248/
2018-12-03 17:40:25 +01:00
913240696e
drm/syncobj: Fix compilation following partial revert
...
We need to include the revert of commit 783195ec1c131280a162christian.koenig@amd.com >
Cc: Daniel Vetter <daniel.vetter@ffwll.ch >
Cc: Chunming Zhou <david1.zhou@amd.com >
Cc: Eric Anholt <eric@anholt.net >
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com >
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com >
Cc: Maxime Ripard <maxime.ripard@bootlin.com >
Cc: Sean Paul <sean@poorly.run >
Cc: David Airlie <airlied@linux.ie >
Reviewed-by: Christian König <christian.koenig@amd.com >
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk >
Signed-off-by: Sean Paul <seanpaul@chromium.org >
Link: https://patchwork.freedesktop.org/patch/msgid/20181112152130.12275-1-chris@chris-wilson.co.uk
2018-11-12 10:58:55 -05:00
131280a162
drm: Revert syncobj timeline changes.
...
Daniel suggested I submit this, since we're still seeing regressions
from it. This is a revert to before 48197bc564#489 Not tainted
[ 48.781668] --------------------------------------------
[ 48.786993] shader_runner/3284 is trying to acquire lock:
[ 48.792408] ce309d7f (&(&array->lock)->rlock){....}, at: dma_fence_add_callback+0x30/0x23c
[ 48.800714]
[ 48.800714] but task is already holding lock:
[ 48.806559] c5952bd3 (&(&array->lock)->rlock){....}, at: dma_fence_add_callback+0x30/0x23c
[ 48.814862]
[ 48.814862] other info that might help us debug this:
[ 48.821410] Possible unsafe locking scenario:
[ 48.821410]
[ 48.827338] CPU0
[ 48.829788] ----
[ 48.832239] lock(&(&array->lock)->rlock);
[ 48.836434] lock(&(&array->lock)->rlock);
[ 48.840640]
[ 48.840640] *** DEADLOCK ***
[ 48.840640]
[ 48.846582] May be due to missing lock nesting notation
[ 130.763560] 1 lock held by cts-runner/3270:
[ 130.767745] #0 : 7834b793 (&(&array->lock)->rlock){-...}, at: dma_fence_add_callback+0x30/0x23c
[ 130.776461]
stack backtrace:
[ 130.780825] CPU: 1 PID: 3270 Comm: cts-runner Not tainted 4.19.0-rc6+ #486
[ 130.787706] Hardware name: Broadcom STB (Flattened Device Tree)
[ 130.793645] [<c021269c>] (unwind_backtrace) from [<c020db1c>] (show_stack+0x10/0x14)
[ 130.801404] [<c020db1c>] (show_stack) from [<c0c2c4b0>] (dump_stack+0xa8/0xd4)
[ 130.808642] [<c0c2c4b0>] (dump_stack) from [<c0281a84>] (__lock_acquire+0x848/0x1a68)
[ 130.816483] [<c0281a84>] (__lock_acquire) from [<c02835d8>] (lock_acquire+0xd8/0x22c)
[ 130.824326] [<c02835d8>] (lock_acquire) from [<c0c49948>] (_raw_spin_lock_irqsave+0x54/0x68)
[ 130.832777] [<c0c49948>] (_raw_spin_lock_irqsave) from [<c086bf54>] (dma_fence_add_callback+0x30/0x23c)
[ 130.842183] [<c086bf54>] (dma_fence_add_callback) from [<c086d4c8>] (dma_fence_array_enable_signaling+0x58/0xec)
[ 130.852371] [<c086d4c8>] (dma_fence_array_enable_signaling) from [<c086c00c>] (dma_fence_add_callback+0xe8/0x23c)
[ 130.862647] [<c086c00c>] (dma_fence_add_callback) from [<c06d8774>] (drm_syncobj_wait_ioctl+0x518/0x614)
[ 130.872143] [<c06d8774>] (drm_syncobj_wait_ioctl) from [<c06b8458>] (drm_ioctl_kernel+0xb0/0xf0)
[ 130.880940] [<c06b8458>] (drm_ioctl_kernel) from [<c06b8818>] (drm_ioctl+0x1d8/0x390)
[ 130.888782] [<c06b8818>] (drm_ioctl) from [<c03a4510>] (do_vfs_ioctl+0xb0/0x8ac)
[ 130.896187] [<c03a4510>] (do_vfs_ioctl) from [<c03a4d40>] (ksys_ioctl+0x34/0x60)
[ 130.903593] [<c03a4d40>] (ksys_ioctl) from [<c0201000>] (ret_fast_syscall+0x0/0x28)
Cc: Chunming Zhou <david1.zhou@amd.com >
Cc: Christian König <christian.koenig@amd.com >
Cc: Daniel Vetter <daniel.vetter@ffwll.ch >
Signed-off-by: Eric Anholt <eric@anholt.net >
Acked-by: Christian König <christian.koenig@amd.com >
Signed-off-by: Christian König <christian.koenig@amd.com >
Link: https://patchwork.freedesktop.org/patch/261044/
2018-11-12 12:54:21 +01:00
783195ec1c
drm/syncobj: disable the timeline UAPI for now v2
...
Until we have sorted out all problems.
v2: return -EINVAL during create if flag is set.
Signed-off-by: Christian König <christian.koenig@amd.com >
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch >
Link: https://patchwork.freedesktop.org/patch/260937/
2018-11-08 11:31:34 +01:00
aecbde630e
drm/syncobj: Fix oops on drm_syncobj_find_fence(file_priv, 0, ...).
...
This broke rendering on V3D, where we almost always have a 0
in-syncobj.
Signed-off-by: Eric Anholt <eric@anholt.net >
Fixes: 48197bc564david1.zhou@amd.com >
Cc: Christian König <christian.koenig@amd.com >
Reviewed-by: Chunming Zhou <david1.zhou@amd.com >
Acked-by: Christian König <christian.koenig@amd.com >
Link: https://patchwork.kernel.org/patch/10669317/
Signed-off-by: Christian König <christian.koenig@amd.com >
2018-11-06 12:53:02 +01:00
Lionel Landwerlin
Chunming Zhou
Ville Syrjälä
Jason Ekstrand
Christian König
Sam Ravnborg
Linus Torvalds
Al Viro
Christian König
Qiang Yu
Chris Wilson
Eric Anholt