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https://git.pengutronix.de/git/lst/linux into drm-next
- cleanups
- add fdinfo memory support
- add explicit reset handling
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Lucas Stach <l.stach@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/41c1e476c6014010247d164ac8d21bd6f922cce1.camel@pengutronix.de
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Add optional reset support which is mentioned in vivante,gc.yaml to
allow the driver to work on SoCs whose reset signal is asserted by default
Signed-off-by: Philippe Lecointre <philippe.lecointre@thalesgroup.com>
Acked-by: Simon Lenain <simon.lenain@thalesgroup.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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The continual trickle of small conversion patches is grating on me, and
is really not helping. Just get rid of the 'remove_new' member
function, which is just an alias for the plain 'remove', and had a
comment to that effect:
/*
* .remove_new() is a relic from a prototype conversion of .remove().
* New drivers are supposed to implement .remove(). Once all drivers are
* converted to not use .remove_new any more, it will be dropped.
*/
This was just a tree-wide 'sed' script that replaced '.remove_new' with
'.remove', with some care taken to turn a subsequent tab into two tabs
to make things line up.
I did do some minimal manual whitespace adjustment for places that used
spaces to line things up.
Then I just removed the old (sic) .remove_new member function, and this
is the end result. No more unnecessary conversion noise.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Since the kernel ringbuffers are allocated from a larger suballocated
area, same as the user commandbufs, they don't need to be CPU page
sized. Allocate 4KB for the kernel ring buffers, as we never use more
than that.
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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A later change will use the FE debug registers to improve GPU
progress monitoring. Instead of having to keep track of the
usage state of the debug registers and lock access to the
VIVS_HI_CLOCK_CONTROL register, statically enable debug
register access during GPU init.
The Vivante downstream driver seems to do the same thing since
a while, so it should be okay to keep access enabled. (See
gckHARDWARE_InitializeHardware in 6.4.11 downstream driver).
Many debug registers contain bogus data if clock gating is
enabled, so even if they are always accessible performance
profiling still needs to manage some prerequisites.
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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The perfmon sampling mutates shared GPU state (e.g. VIVS_HI_CLOCK_CONTROL
to select the pipe for the perf counter reads). To avoid clashing with
other functions mutating the same state (e.g. etnaviv_gpu_update_clock)
the perfmon sampling needs to hold the GPU lock.
Fixes: 68dc0b295dcb ("drm/etnaviv: use 'sync points' for performance monitor requests")
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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In the etnaviv_pdev_probe() and etnaviv_gpu_platform_probe() function, the
value of '&pdev->dev' has been cached to the local auto variable 'dev'.
But some callers use 'dev', while the rest use '&pdev->dev'. To keep it
consistent, use 'dev' uniformly.
Tested-by: Christian Gmeiner <cgmeiner@igalia.com>
Signed-off-by: Sui Jingfeng <sui.jingfeng@linux.dev>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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Currently, the calling of mutex_destroy() is ignored on error handling
code path. It is safe for now, since mutex_destroy() actually does
nothing in non-debug builds. But the mutex_destroy() is used to mark
the mutex uninitialized on debug builds, and any subsequent use of the
mutex is forbidden.
It also could lead to problems if mutex_destroy() gets extended, add
missing mutex_destroy() to eliminate potential concerns.
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
Signed-off-by: Sui Jingfeng <sui.jingfeng@linux.dev>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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Remove __GFP_HIGHMEM when requesting a page from DMA32 zone,
and since all vivante GPUs in the system will share the same
DMA constraints, move the check of whether to get a page from
DMA32 to etnaviv_bind().
Fixes: b72af445cd38 ("drm/etnaviv: request pages from DMA32 zone when needed")
Suggested-by: Sui Jingfeng <sui.jingfeng@linux.dev>
Signed-off-by: Xiaolei Wang <xiaolei.wang@windriver.com>
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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A single IRQ might signal the completion of multiple jobs/fences
at once. There is no point in attaching a new timestamp to each
fence that only differs in when exactly the IRQ handler was able
to process this fence.
Get a single timestamp when the IRQ handler has determined that
there are completed jobs and reuse this for all fences that get
signalled by the handler.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
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On MMUv2 cores the linear window is only relevant when starting the FE,
before the MMU has been activated. Once the MMU is active, all accesses
are translated with no way to bypass the MMU via the linear window. Thus
TS ignoring the linear window offset is not an issue on cores with MMUv2
present and there is no need to disable TS when we need to move the
linear window.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Tested-by: Joao Paulo Goncalves <joao.goncalves@toradex.com>
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Disable SH_EU clock gating for the VIPNano-Si+ NPU on i.MX8MP
and for other affected core revisions.
Taken from linux-imx lf-6.1.36-2.1.0, specifically [1].
[1] https://github.com/nxp-imx/linux-imx/blob/lf-6.1.36-2.1.0/drivers/mxc/gpu-viv/hal/kernel/arch/gc_hal_kernel_hardware.c#L2747-L2761
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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Turn the etnaviv_is_model_rev() macro into a static inline function.
Use the raw model number as a parameter instead of the chipModel_GCxxxx
defines. This reduces synchronization requirements for the generated
headers. For newer hardware, the GCxxxx names are not the correct model
names anyway. For example, model 0x8000 NPUs are called VIPNano-QI/SI(+)
by VeriSilicon.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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Core in platform_driver_register() already sets the .owner, so driver
does not need to. Whatever is set here will be anyway overwritten by
main driver calling platform_driver_register().
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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This reverts commit 1dccdba084897443d116508a8ed71e0ac8a031a4.
In userspace a different approach was choosen - hwdb. As a result, there
is no need for these values.
Signed-off-by: Christian Gmeiner <cgmeiner@igalia.com>
Reviewed-by: Tomeu Vizoso <tomeu@tomeuvizoso.net>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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commit 4bce244272513 ("drm/etnaviv: disable tx clock gating for GC7000
rev6203") accidentally applied the fix for i.MX8MN errata ERR050226 to
GC2000 instead of GC7000, failing to disable tx clock gating for GC7000
rev 0x6023 as intended.
Additional clean-up further propagated this issue, partially breaking
the clock gating fixes added for GC7000 rev 6202 in commit 432f51e7deeda
("drm/etnaviv: add clock gating workaround for GC7000 r6202").
Signed-off-by: Derek Foreman <derek.foreman@collabora.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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https://git.pengutronix.de/git/lst/linux into drm-next
- various code cleanups
- enhancements for NPU and MRT support
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Lucas Stach <l.stach@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/72a783cd98d60f6ebb43b90a6b453eea87224409.camel@pengutronix.de
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These ones will be needed to make use fo the NN and TP units in the NPUs
based on Vivante IP.
Also fix the number of NN cores in the VIPNano-qi.
Signed-off-by: Tomeu Vizoso <tomeu@tomeuvizoso.net>
Acked-by: Christian Gmeiner <cgmeiner@igalia.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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Module level clock gating and the pulse eater might interfere with
the GPU reset, as they both have the potential to stop the clock
and thus reset propagation to parts of the GPU.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
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The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is (mostly) ignored
and this typically results in resource leaks. To improve here there is a
quest to make the remove callback return void. In the first step of this
quest all drivers are converted to .remove_new() which already returns
void.
Trivially convert the etnaviv drm driver from always returning zero in
the remove callback to the void returning variant.
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jyri Sarha <jyri.sarha@iki.fi>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20231102165640.3307820-25-u.kleine-koenig@pengutronix.de
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Currently, job flow control is implemented simply by limiting the number
of jobs in flight. Therefore, a scheduler is initialized with a credit
limit that corresponds to the number of jobs which can be sent to the
hardware.
This implies that for each job, drivers need to account for the maximum
job size possible in order to not overflow the ring buffer.
However, there are drivers, such as Nouveau, where the job size has a
rather large range. For such drivers it can easily happen that job
submissions not even filling the ring by 1% can block subsequent
submissions, which, in the worst case, can lead to the ring run dry.
In order to overcome this issue, allow for tracking the actual job size
instead of the number of jobs. Therefore, add a field to track a job's
credit count, which represents the number of credits a job contributes
to the scheduler's credit limit.
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Reviewed-by: Luben Tuikov <ltuikov89@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231110001638.71750-1-dakr@redhat.com
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drm-next
This time mostly cleanups around the runtime power management handling
and slightly improved GPU hang handling. Also some additions to the
HWDB to get the driver working properly on more NXP i.MX8MP IP cores.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Lucas Stach <l.stach@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/f40c65f7ecfde2e61f1a6d7fd463f6f739bc0dd1.camel@pengutronix.de
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The DT of_device.h and of_platform.h date back to the separate
of_platform_bus_type before it as merged into the regular platform bus.
As part of that merge prepping Arm DT support 13 years ago, they
"temporarily" include each other. They also include platform_device.h
and of.h. As a result, there's a pretty much random mix of those include
files used throughout the tree. In order to detangle these headers and
replace the implicit includes with struct declarations, users need to
explicitly include the correct includes.
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Steven Price <steven.price@arm.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Acked-by: Robert Foss <rfoss@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714174545.4056287-1-robh@kernel.org
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There are two "ret" variables declared in this function so setting
"ret = -EBUSY;" sets the wrong one. The function ends up returning an
uninitialized variable.
Fixes: f098f9b8042a ("drm/etnaviv: move runtime PM handling to events")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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The GPU is halted when it hits a MMU exception, so there is no point in
waiting for the job timeout to expire or try to work out if the GPU is
still making progress in the timeout handler, as we know that the GPU
won't make any more progress.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
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Now that it is only used to track the driver internal state of
the MMU global and cmdbuf objects, we can get rid of this property
by making the free/finit functions of those objects safe to call
on an uninitialized object.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
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Instead of only tracking if the FE is running, use a enum to better
describe the various states the GPU can be in. This allows some
additional validation to make sure that functions that expect a
certain GPU state are only called when the GPU is actually in that
state.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
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Nothing in this callpath actually touches the GPU, so there is no reason
to get it out of suspend state here. Only if runtime PM isn't enabled at
all we must make sure to enable the clocks, so the GPU init routine can
access the GPU later on.
This also removes the need to guard against the state where the driver
isn't fully initialized yet in the runtime PM resume handler.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
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Currently the clock is enabled in the runtime resume function, but are
disabled a level further down in the callstack in the suspend function.
Move the clock disable into the suspend function to make handling
symmetrical between resume and suspend.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
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Conceptually events are the right abstraction to handle the GPU
runtime PM state: as long as any event is pending the GPU can not
be idle. Events are also properly freed and reallocated when the
GPU has been reset after a hang.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
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Clearing the whole bitmap at once is only a minor optimization in
a path that should be extremely cold. Free the events by calling
event_free() instead of directly manipulating the completion count
and event bitmap.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
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So it can use the event_free function without adding another
forward declaration. No functional change.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
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Currently the FE is spinning way too fast when polling for new work in
the FE idleloop. As each poll fetches 16 bytes from memory, a GPU running
at 1GHz with the current setting of 200 wait cycle between fetches causes
80 MB/s of memory traffic just to check for new work when the GPU is
otherwise idle, which is more FE traffic than in some GPU loaded cases.
Significantly increase the number of wait cycles to slow down the poll
interval to ~30µs, limiting the FE idle memory traffic to 512 KB/s, while
providing a max latency which should not hurt most use-cases. The FE WAIT
command seems to have some unknown discrete steps in the wait cycles so
we may over/undershoot the target a bit, but that should be harmless.
If the GPU core base frequency is unknown keep the 200 wait cycles as
a sane default.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Sui Jingfeng <suijingfeng@loongson.cn>
Tested-by: Sui Jingfeng <suijingfeng@loongson.cn>
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
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For NPUs the number of NN cores is a interesting property, which is useful
to show in the debugfs information.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
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Use the RUNTIME_PM_OPS() and pm_ptr() macros to handle the
.runtime_suspend/.runtime_resume callbacks.
These macros allow the suspend and resume functions to be automatically
dropped by the compiler when CONFIG_PM is disabled, without having
to use #ifdef guards.
This has the advantage of always compiling these functions in,
independently of any Kconfig option. Thanks to that, bugs and other
regressions are subsequently easier to catch.
Some #ifdef CONFIG_PM guards were protecting simple statements, and were
also converted to "if (IS_ENABLED(CONFIG_PM))".
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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This simplifies the driver code a bit, as XArray already provides
internal locking. IDRs are implemented using XArrays anyways, so
this drops one level of unneeded abstraction.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
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The fence lock currently protects two distinct things. It protects the fence
IDR from concurrent inserts and removes and also keeps drm_sched_job_arm and
drm_sched_entity_push_job in one atomic section to guarantee the fence seqno
monotonicity. Split the lock into those two functions.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
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The MMU tells us the fault status. While the raw register value is
already printed, it's a bit more user friendly to translate the
fault reasons into human readable format.
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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Userspace is still not making full use of the hardware, so we don't know
yet if changes to the UAPI won't be needed. Warn about it.
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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The i.MX8MN SoC errata sheet mentions ERR050226: "GPU: Texture L2 Cache
idle signal may incorrectly clock gate the texture engine in GPU".
The workaround is to disable the corresponding clock gatings.
While on it move the clock gating check for rev6202 into the same check
to bundle them.
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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Older GC300 revisions have their power registers at an offset of 0x200
rather than 0x100. Add new gpu_read_power and gpu_write_power functions
to encapsulate accesses to the power addresses and fix the addresses.
Signed-off-by: Doug Brown <doug@schmorgal.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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The GC300's features register doesn't specify that a 2D pipe is
available, and like the GC600, its idle register reports zero bits where
modules aren't present.
Signed-off-by: Doug Brown <doug@schmorgal.com>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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Track the pid per submit, so we can print the name and cmdline of
the task which submitted the batch that caused the gpu to hang.
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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Pull bitmap updates from Yury Norov:
- introduce for_each_set_bitrange()
- use find_first_*_bit() instead of find_next_*_bit() where possible
- unify for_each_bit() macros
* tag 'bitmap-5.17-rc1' of git://github.com/norov/linux:
vsprintf: rework bitmap_list_string
lib: bitmap: add performance test for bitmap_print_to_pagebuf
bitmap: unify find_bit operations
mm/percpu: micro-optimize pcpu_is_populated()
Replace for_each_*_bit_from() with for_each_*_bit() where appropriate
find: micro-optimize for_each_{set,clear}_bit()
include/linux: move for_each_bit() macros from bitops.h to find.h
cpumask: replace cpumask_next_* with cpumask_first_* where appropriate
tools: sync tools/bitmap with mother linux
all: replace find_next{,_zero}_bit with find_first{,_zero}_bit where appropriate
cpumask: use find_first_and_bit()
lib: add find_first_and_bit()
arch: remove GENERIC_FIND_FIRST_BIT entirely
include: move find.h from asm_generic to linux
bitops: move find_bit_*_le functions from le.h to find.h
bitops: protect find_first_{,zero}_bit properly
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A couple of kernel functions call for_each_*_bit_from() with start
bit equal to 0. Replace them with for_each_*_bit().
No functional changes, but might improve on readability.
Signed-off-by: Yury Norov <yury.norov@gmail.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
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The only usage of cooling_ops is to pass its address to
thermal_of_cooling_device_register(), which takes a pointer to const
struct thermal_cooling_device_ops as input. Make it const to allow the
compiler to put it in read-only memory.
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
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'destroy_workqueue()' already drains the queue before destroying it, so
there is no need to flush it explicitly.
Remove the redundant 'flush_workqueue()' calls.
This was generated with coccinelle:
@@
expression E;
@@
- flush_workqueue(E);
destroy_workqueue(E);
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Jyri Sarha <jyri.sarha@iki.fi>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Link: https://lore.kernel.org/r/75e8ba40076ad707d47e3a3670e6b23c1b8b11bc.1633874223.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Rob Clark <robdclark@chromium.org>
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Move the refcount manipulation of the MMU context to the point where the
hardware state is programmed. At that point it is also known if a previous
MMU state is still there, or the state needs to be reprogrammed with a
potentially different context.
Cc: stable@vger.kernel.org # 5.4
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Tested-by: Michael Walle <michael@walle.cc>
Tested-by: Marek Vasut <marex@denx.de>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
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After a reset the GPU is no longer using the MMU context and may be
restarted with a different context. While the mmu_state proeprly was
cleared, the context wasn't unreferenced, leading to a memory leak.
Cc: stable@vger.kernel.org # 5.4
Reported-by: Michael Walle <michael@walle.cc>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Tested-by: Michael Walle <michael@walle.cc>
Tested-by: Marek Vasut <marex@denx.de>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
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When the GPU is reset both the current exec state, as well as all MMU
state is lost. Move the driver side state tracking into the reset function
to keep hardware and software state from diverging.
Cc: stable@vger.kernel.org # 5.4
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Tested-by: Michael Walle <michael@walle.cc>
Tested-by: Marek Vasut <marex@denx.de>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
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