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The fallback case of fwnode_mdbiobus_register()
(relevant for !CONFIG_FWNODE_MDIO) was defined with wrong
argument name, causing a compilation error. Fix that.
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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bdev_disk_changed can only operate on whole devices. Make that clear
by passing a gendisk instead of the struct block_device.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210624123240.441814-3-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Move bdev_disk_changed to block/partitions/core.c, together with the
rest of the partition scanning code.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20210624123240.441814-2-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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XDP_REDIRECT works by a three-step process: the bpf_redirect() and
bpf_redirect_map() helpers will lookup the target of the redirect and store
it (along with some other metadata) in a per-CPU struct bpf_redirect_info.
Next, when the program returns the XDP_REDIRECT return code, the driver
will call xdp_do_redirect() which will use the information thus stored to
actually enqueue the frame into a bulk queue structure (that differs
slightly by map type, but shares the same principle). Finally, before
exiting its NAPI poll loop, the driver will call xdp_do_flush(), which will
flush all the different bulk queues, thus completing the redirect.
Pointers to the map entries will be kept around for this whole sequence of
steps, protected by RCU. However, there is no top-level rcu_read_lock() in
the core code; instead drivers add their own rcu_read_lock() around the XDP
portions of the code, but somewhat inconsistently as Martin discovered[0].
However, things still work because everything happens inside a single NAPI
poll sequence, which means it's between a pair of calls to
local_bh_disable()/local_bh_enable(). So Paul suggested[1] that we could
document this intention by using rcu_dereference_check() with
rcu_read_lock_bh_held() as a second parameter, thus allowing sparse and
lockdep to verify that everything is done correctly.
This patch does just that: we add an __rcu annotation to the map entry
pointers and remove the various comments explaining the NAPI poll assurance
strewn through devmap.c in favour of a longer explanation in filter.c. The
goal is to have one coherent documentation of the entire flow, and rely on
the RCU annotations as a "standard" way of communicating the flow in the
map code (which can additionally be understood by sparse and lockdep).
The RCU annotation replacements result in a fairly straight-forward
replacement where READ_ONCE() becomes rcu_dereference_check(), WRITE_ONCE()
becomes rcu_assign_pointer() and xchg() and cmpxchg() gets wrapped in the
proper constructs to cast the pointer back and forth between __rcu and
__kernel address space (for the benefit of sparse). The one complication is
that xskmap has a few constructions where double-pointers are passed back
and forth; these simply all gain __rcu annotations, and only the final
reference/dereference to the inner-most pointer gets changed.
With this, everything can be run through sparse without eliciting
complaints, and lockdep can verify correctness even without the use of
rcu_read_lock() in the drivers. Subsequent patches will clean these up from
the drivers.
[0] https://lore.kernel.org/bpf/20210415173551.7ma4slcbqeyiba2r@kafai-mbp.dhcp.thefacebook.com/
[1] https://lore.kernel.org/bpf/20210419165837.GA975577@paulmck-ThinkPad-P17-Gen-1/
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210624160609.292325-6-toke@redhat.com
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The xchg() and cmpxchg() functions are sometimes used to carry out RCU
updates. Unfortunately, this can result in sparse warnings for both
the old-value and new-value arguments, as well as for the return value.
The arguments can be dealt with using RCU_INITIALIZER():
old_p = xchg(&p, RCU_INITIALIZER(new_p));
But a sparse warning still remains due to assigning the __rcu pointer
returned from xchg to the (most likely) non-__rcu pointer old_p.
This commit therefore provides an unrcu_pointer() macro that strips
the __rcu. This macro can be used as follows:
old_p = unrcu_pointer(xchg(&p, RCU_INITIALIZER(new_p)));
Reported-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210624160609.292325-2-toke@redhat.com
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This commit defines the API for userspace and prepare the common
functionalities to support per VM/VCPU binary stats data readings.
The KVM stats now is only accessible by debugfs, which has some
shortcomings this change series are supposed to fix:
1. The current debugfs stats solution in KVM could be disabled
when kernel Lockdown mode is enabled, which is a potential
rick for production.
2. The current debugfs stats solution in KVM is organized as "one
stats per file", it is good for debugging, but not efficient
for production.
3. The stats read/clear in current debugfs solution in KVM are
protected by the global kvm_lock.
Besides that, there are some other benefits with this change:
1. All KVM VM/VCPU stats can be read out in a bulk by one copy
to userspace.
2. A schema is used to describe KVM statistics. From userspace's
perspective, the KVM statistics are self-describing.
3. With the fd-based solution, a separate telemetry would be able
to read KVM stats in a less privileged environment.
4. After the initial setup by reading in stats descriptors, a
telemetry only needs to read the stats data itself, no more
parsing or setup is needed.
Reviewed-by: David Matlack <dmatlack@google.com>
Reviewed-by: Ricardo Koller <ricarkol@google.com>
Reviewed-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
Reviewed-by: Fuad Tabba <tabba@google.com>
Tested-by: Fuad Tabba <tabba@google.com> #arm64
Signed-off-by: Jing Zhang <jingzhangos@google.com>
Message-Id: <20210618222709.1858088-3-jingzhangos@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Generic KVM stats are those collected in architecture independent code
or those supported by all architectures; put all generic statistics in
a separate structure. This ensures that they are defined the same way
in the statistics API which is being added, removing duplication among
different architectures in the declaration of the descriptors.
No functional change intended.
Reviewed-by: David Matlack <dmatlack@google.com>
Reviewed-by: Ricardo Koller <ricarkol@google.com>
Reviewed-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
Signed-off-by: Jing Zhang <jingzhangos@google.com>
Message-Id: <20210618222709.1858088-2-jingzhangos@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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After remove the unique user of sop->bdev_try_to_free_page() callback,
we could remove the callback and the corresponding blkdev_releasepage()
at all.
Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20210610112440.3438139-9-yi.zhang@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Current metadata buffer release logic in bdev_try_to_free_page() have
a lot of use-after-free issues when umount filesystem concurrently, and
it is difficult to fix directly because ext4 is the only user of
s_op->bdev_try_to_free_page callback and we may have to add more special
refcount or lock that is only used by ext4 into the common vfs layer,
which is unacceptable.
One better solution is remove the bdev_try_to_free_page callback, but
the real problem is we cannot easily release journal_head on the
checkpointed buffer, so try_to_free_buffers() cannot release buffers and
page under memory pressure, which is more likely to trigger
out-of-memory. So we cannot remove the callback directly before we find
another way to release journal_head.
This patch introduce a shrinker to free journal_head on the checkpointed
transaction. After the journal_head got freed, try_to_free_buffers()
could free buffer properly.
Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Suggested-by: Jan Kara <jack@suse.cz>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20210610112440.3438139-6-yi.zhang@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Although we merged c044f3d8360 ("jbd2: abort journal if free a async
write error metadata buffer"), there is a race between
jbd2_journal_try_to_free_buffers() and jbd2_journal_destroy(), so the
jbd2_log_do_checkpoint() may still fail to detect the buffer write
io error flag which may lead to filesystem inconsistency.
jbd2_journal_try_to_free_buffers() ext4_put_super()
jbd2_journal_destroy()
__jbd2_journal_remove_checkpoint()
detect buffer write error jbd2_log_do_checkpoint()
jbd2_cleanup_journal_tail()
<--- lead to inconsistency
jbd2_journal_abort()
Fix this issue by introducing a new atomic flag which only have one
JBD2_CHECKPOINT_IO_ERROR bit now, and set it in
__jbd2_journal_remove_checkpoint() when freeing a checkpoint buffer
which has write_io_error flag. Then jbd2_journal_destroy() will detect
this mark and abort the journal to prevent updating log tail.
Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20210610112440.3438139-3-yi.zhang@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Drop the repeated word "the" in a comment.
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[alexander.shishkin: fixed the commit message]
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Link: https://lore.kernel.org/r/20210621151246.31891-2-alexander.shishkin@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Map them to KEY_MACRO# event codes.
These buttons are defined by HID as follows:
"The user defines the function of these buttons to control software applications or GUI objects."
This matches the semantics of the KEY_MACRO# input event codes that Linux supports.
Also add support for HID "Named Array" collections.
Also add hid-debug support for KEY_MACRO#.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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Docs for struct dma_resv are fairly clear:
"A reservation object can have attached one exclusive fence (normally
associated with write operations) or N shared fences (read
operations)."
https://dri.freedesktop.org/docs/drm/driver-api/dma-buf.html#reservation-objects
Furthermore a review across all of upstream.
First of render drivers and how they set implicit fences:
- nouveau follows this contract, see in validate_fini_no_ticket()
nouveau_bo_fence(nvbo, fence, !!b->write_domains);
and that last boolean controls whether the exclusive or shared fence
slot is used.
- radeon follows this contract by setting
p->relocs[i].tv.num_shared = !r->write_domain;
in radeon_cs_parser_relocs(), which ensures that the call to
ttm_eu_fence_buffer_objects() in radeon_cs_parser_fini() will do the
right thing.
- vmwgfx seems to follow this contract with the shotgun approach of
always setting ttm_val_buf->num_shared = 0, which means
ttm_eu_fence_buffer_objects() will only use the exclusive slot.
- etnaviv follows this contract, as can be trivially seen by looking
at submit_attach_object_fences()
- i915 is a bit a convoluted maze with multiple paths leading to
i915_vma_move_to_active(). Which sets the exclusive flag if
EXEC_OBJECT_WRITE is set. This can either come as a buffer flag for
softpin mode, or through the write_domain when using relocations. It
follows this contract.
- lima follows this contract, see lima_gem_submit() which sets the
exclusive fence when the LIMA_SUBMIT_BO_WRITE flag is set for that
bo
- msm follows this contract, see msm_gpu_submit() which sets the
exclusive flag when the MSM_SUBMIT_BO_WRITE is set for that buffer
- panfrost follows this contract with the shotgun approach of just
always setting the exclusive fence, see
panfrost_attach_object_fences(). Benefits of a single engine I guess
- v3d follows this contract with the same shotgun approach in
v3d_attach_fences_and_unlock_reservation(), but it has at least an
XXX comment that maybe this should be improved
- v4c uses the same shotgun approach of always setting an exclusive
fence, see vc4_update_bo_seqnos()
- vgem also follows this contract, see vgem_fence_attach_ioctl() and
the VGEM_FENCE_WRITE. This is used in some igts to validate prime
sharing with i915.ko without the need of a 2nd gpu
- vritio follows this contract again with the shotgun approach of
always setting an exclusive fence, see virtio_gpu_array_add_fence()
This covers the setting of the exclusive fences when writing.
Synchronizing against the exclusive fence is a lot more tricky, and I
only spot checked a few:
- i915 does it, with the optional EXEC_OBJECT_ASYNC to skip all
implicit dependencies (which is used by vulkan)
- etnaviv does this. Implicit dependencies are collected in
submit_fence_sync(), again with an opt-out flag
ETNA_SUBMIT_NO_IMPLICIT. These are then picked up in
etnaviv_sched_dependency which is the
drm_sched_backend_ops->dependency callback.
- v4c seems to not do much here, maybe gets away with it by not having
a scheduler and only a single engine. Since all newer broadcom chips than
the OG vc4 use v3d for rendering, which follows this contract, the
impact of this issue is fairly small.
- v3d does this using the drm_gem_fence_array_add_implicit() helper,
which then it's drm_sched_backend_ops->dependency callback
v3d_job_dependency() picks up.
- panfrost is nice here and tracks the implicit fences in
panfrost_job->implicit_fences, which again the
drm_sched_backend_ops->dependency callback panfrost_job_dependency()
picks up. It is mildly questionable though since it only picks up
exclusive fences in panfrost_acquire_object_fences(), but not buggy
in practice because it also always sets the exclusive fence. It
should pick up both sets of fences, just in case there's ever going
to be a 2nd gpu in a SoC with a mali gpu. Or maybe a mali SoC with a
pcie port and a real gpu, which might actually happen eventually. A
bug, but easy to fix. Should probably use the
drm_gem_fence_array_add_implicit() helper.
- lima is nice an easy, uses drm_gem_fence_array_add_implicit() and
the same schema as v3d.
- msm is mildly entertaining. It also supports MSM_SUBMIT_NO_IMPLICIT,
but because it doesn't use the drm/scheduler it handles fences from
the wrong context with a synchronous dma_fence_wait. See
submit_fence_sync() leading to msm_gem_sync_object(). Investing into
a scheduler might be a good idea.
- all the remaining drivers are ttm based, where I hope they do
appropriately obey implicit fences already. I didn't do the full
audit there because a) not follow the contract would confuse ttm
quite well and b) reading non-standard scheduler and submit code
which isn't based on drm/scheduler is a pain.
Onwards to the display side.
- Any driver using the drm_gem_plane_helper_prepare_fb() helper will
correctly. Overwhelmingly most drivers get this right, except a few
totally dont. I'll follow up with a patch to make this the default
and avoid a bunch of bugs.
- I didn't audit the ttm drivers, but given that dma_resv started
there I hope they get this right.
In conclusion this IS the contract, both as documented and
overwhelmingly implemented, specically as implemented by all render
drivers except amdgpu.
Amdgpu tried to fix this already in
commit 049aca4363d8af87cab8d53de5401602db3b9999
Author: Christian König <christian.koenig@amd.com>
Date: Wed Sep 19 16:54:35 2018 +0200
drm/amdgpu: fix using shared fence for exported BOs v2
but this fix falls short on a number of areas:
- It's racy, by the time the buffer is shared it might be too late. To
make sure there's definitely never a problem we need to set the
fences correctly for any buffer that's potentially exportable.
- It's breaking uapi, dma-buf fds support poll() and differentitiate
between, which was introduced in
commit 9b495a5887994a6d74d5c261d012083a92b94738
Author: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Date: Tue Jul 1 12:57:43 2014 +0200
dma-buf: add poll support, v3
- Christian König wants to nack new uapi building further on this
dma_resv contract because it breaks amdgpu, quoting
"Yeah, and that is exactly the reason why I will NAK this uAPI change.
"This doesn't works for amdgpu at all for the reasons outlined above."
https://lore.kernel.org/dri-devel/f2eb6751-2f82-9b23-f57e-548de5b729de@gmail.com/
Rejecting new development because your own driver is broken and
violates established cross driver contracts and uapi is really not
how upstream works.
Now this patch will have a severe performance impact on anything that
runs on multiple engines. So we can't just merge it outright, but need
a bit a plan:
- amdgpu needs a proper uapi for handling implicit fencing. The funny
thing is that to do it correctly, implicit fencing must be treated
as a very strange IPC mechanism for transporting fences, where both
setting the fence and dependency intercepts must be handled
explicitly. Current best practices is a per-bo flag to indicate
writes, and a per-bo flag to to skip implicit fencing in the CS
ioctl as a new chunk.
- Since amdgpu has been shipping with broken behaviour we need an
opt-out flag from the butchered implicit fencing model to enable the
proper explicit implicit fencing model.
- for kernel memory fences due to bo moves at least the i915 idea is
to use ttm_bo->moving. amdgpu probably needs the same.
- since the current p2p dma-buf interface assumes the kernel memory
fence is in the exclusive dma_resv fence slot we need to add a new
fence slot for kernel fences, which must never be ignored. Since
currently only amdgpu supports this there's no real problem here
yet, until amdgpu gains a NO_IMPLICIT CS flag.
- New userspace needs to ship in enough desktop distros so that users
wont notice the perf impact. I think we can ignore LTS distros who
upgrade their kernels but not their mesa3d snapshot.
- Then when this is all in place we can merge this patch here.
What is not a solution to this problem here is trying to make the
dma_resv rules in the kernel more clever. The fundamental issue here
is that the amdgpu CS uapi is the least expressive one across all
drivers (only equalled by panfrost, which has an actual excuse) by not
allowing any userspace control over how implicit sync is conducted.
Until this is fixed it's completely pointless to make the kernel more
clever to improve amdgpu, because all we're doing is papering over
this uapi design issue. amdgpu needs to attain the status quo
established by other drivers first, once that's achieved we can tackle
the remaining issues in a consistent way across drivers.
v2: Bas pointed me at AMDGPU_GEM_CREATE_EXPLICIT_SYNC, which I
entirely missed.
This is great because it means the amdgpu specific piece for proper
implicit fence handling exists already, and that since a while. The
only thing that's now missing is
- fishing the implicit fences out of a shared object at the right time
- setting the exclusive implicit fence slot at the right time.
Jason has a patch series to fill that gap with a bunch of generic
ioctl on the dma-buf fd:
https://lore.kernel.org/dri-devel/20210520190007.534046-1-jason@jlekstrand.net/
v3: Since Christian has fixed amdgpu now in
commit 8c505bdc9c8b955223b054e34a0be9c3d841cd20 (drm-misc/drm-misc-next)
Author: Christian König <christian.koenig@amd.com>
Date: Wed Jun 9 13:51:36 2021 +0200
drm/amdgpu: rework dma_resv handling v3
Use the audit covered in this commit message as the excuse to update
the dma-buf docs around dma_buf.resv usage across drivers.
Since dynamic importers have different rules also hammer these in
again while we're at it.
v4:
- Add the missing "through the device" in the dynamic section that I
overlooked.
- Fix a kerneldoc markup mistake, the link didn't connect
v5:
- A few s/should/must/ to make clear what must be done (if the driver
does implicit sync) and what's more a maybe (Daniel Stone)
- drop all the example api discussion, that needs to be expanded,
clarified and put into a new chapter in drm-uapi.rst (Daniel Stone)
Cc: Daniel Stone <daniel@fooishbar.org>
Acked-by: Daniel Stone <daniel@fooishbar.org>
Reviewed-by: Dave Airlie <airlied@redhat.com> (v4)
Reviewed-by: Christian König <christian.koenig@amd.com> (v3)
Cc: mesa-dev@lists.freedesktop.org
Cc: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Cc: Dave Airlie <airlied@gmail.com>
Cc: Rob Clark <robdclark@chromium.org>
Cc: Kristian H. Kristensen <hoegsberg@google.com>
Cc: Michel Dänzer <michel@daenzer.net>
Cc: Daniel Stone <daniels@collabora.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Deepak R Varma <mh12gx2825@gmail.com>
Cc: Chen Li <chenli@uniontech.com>
Cc: Kevin Wang <kevin1.wang@amd.com>
Cc: Dennis Li <Dennis.Li@amd.com>
Cc: Luben Tuikov <luben.tuikov@amd.com>
Cc: linaro-mm-sig@lists.linaro.org
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210624125246.166721-1-daniel.vetter@ffwll.ch
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Also review & update everything while we're at it.
This is prep work to smash a ton of stuff into the kerneldoc for
@resv.
v2: Move the doc for sysfs_entry.attachment_uid to the right place too
(Sam)
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Christian König <christian.koenig@amd.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Nirmoy Das <nirmoy.das@amd.com>
Cc: Deepak R Varma <mh12gx2825@gmail.com>
Cc: Chen Li <chenli@uniontech.com>
Cc: Kevin Wang <kevin1.wang@amd.com>
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Link: https://patchwork.freedesktop.org/patch/msgid/20210623161712.3370885-1-daniel.vetter@ffwll.ch
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Add support for versions v1.2 and 1.3 of the SMC calling convention.
* for-next/smccc:
arm64: smccc: Support SMCCC v1.3 SVE register saving hint
arm64: smccc: Add support for SMCCCv1.2 extended input/output registers
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PMU driver cleanups for managing IRQ affinity and exposing event
attributes via sysfs.
* for-next/perf: (36 commits)
drivers/perf: fix the missed ida_simple_remove() in ddr_perf_probe()
perf/arm-cmn: Fix invalid pointer when access dtc object sharing the same IRQ number
arm64: perf: Simplify EVENT ATTR macro in perf_event.c
drivers/perf: Simplify EVENT ATTR macro in fsl_imx8_ddr_perf.c
drivers/perf: Simplify EVENT ATTR macro in xgene_pmu.c
drivers/perf: Simplify EVENT ATTR macro in qcom_l3_pmu.c
drivers/perf: Simplify EVENT ATTR macro in qcom_l2_pmu.c
drivers/perf: Simplify EVENT ATTR macro in SMMU PMU driver
perf: Add EVENT_ATTR_ID to simplify event attributes
perf/smmuv3: Don't trample existing events with global filter
perf/hisi: Constify static attribute_group structs
perf: qcom: Remove redundant dev_err call in qcom_l3_cache_pmu_probe()
drivers/perf: hisi: Fix data source control
arm64: perf: Add more support on caps under sysfs
perf: qcom_l2_pmu: move to use request_irq by IRQF_NO_AUTOEN flag
arm_pmu: move to use request_irq by IRQF_NO_AUTOEN flag
perf: arm_spe: use DEVICE_ATTR_RO macro
perf: xgene_pmu: use DEVICE_ATTR_RO macro
perf: qcom: use DEVICE_ATTR_RO macro
perf: arm_pmu: use DEVICE_ATTR_RO macro
...
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Since commit 6c5f05a6cd88 ("ARM: imx3: Remove imx3 soc_init()")
there are no more users of struct sdma_script_start_addrs outside
of the driver itself, thus let's move the struct declaration just
to the driver source code and remove the header file as unused one.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Link: https://lore.kernel.org/r/20210620191103.156626-1-vz@mleia.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Johan writes:
USB-serial updates for 5.14-rc1
Here are the USB-serial updates for 5.14-rc1, including:
- gpio support for CP2108
- chars_in_buffer and write_room return-value updates
- chars_in_buffer and write_room clean ups
Included are also various clean ups.
All have been in linux-next with no reported issues.
* tag 'usb-serial-5.14-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial:
USB: serial: cp210x: add support for GPIOs on CP2108
USB: serial: drop irq-flags initialisations
USB: serial: mos7840: drop buffer-callback return-value comments
USB: serial: mos7720: drop buffer-callback sanity checks
USB: serial: io_edgeport: drop buffer-callback sanity checks
USB: serial: digi_acceleport: add chars_in_buffer locking
USB: serial: digi_acceleport: reduce chars_in_buffer over-reporting
USB: serial: make usb_serial_driver::chars_in_buffer return uint
USB: serial: make usb_serial_driver::write_room return uint
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Introducing new, complementary to SD_ASYM_CPUCAPACITY, sched_domain
topology flag, to distinguish between shed_domains where any CPU
capacity asymmetry is detected (SD_ASYM_CPUCAPACITY) and ones where
a full set of CPU capacities is visible to all domain members
(SD_ASYM_CPUCAPACITY_FULL).
With the distinction between full and partial CPU capacity asymmetry,
brought in by the newly introduced flag, the scope of the original
SD_ASYM_CPUCAPACITY flag gets shifted, still maintaining the existing
behaviour when one is detected on a given sched domain, allowing
misfit migrations within sched domains that do not observe full range
of CPU capacities but still do have members with different capacity
values. It loses though it's meaning when it comes to the lowest CPU
asymmetry sched_domain level per-cpu pointer, which is to be now
denoted by SD_ASYM_CPUCAPACITY_FULL flag.
Signed-off-by: Beata Michalska <beata.michalska@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Valentin Schneider <valentin.schneider@arm.com>
Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Link: https://lore.kernel.org/r/20210603140627.8409-2-beata.michalska@arm.com
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The definitions for crypto_attr-related types and enums are not
needed by most Crypto API users. This patch moves them out of
crypto.h and into algapi.h/internal.h depending on the extent of
their use.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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This is a major chunk of IXP4xx modernization:
- Fist we move some registers around to make room for
the predetermined PCI I/O space.
- Then we add some Kconfig options to make it possible
to use the old PCI driver in parallell with the new
shiny one.
- Then we add the new PCI driver and some bindings for
it.
- On top of this we add an (ages old) patch from Arnd
that centralize the CPU/SoC detection in drivers/soc
and make the header a standard Linux header to avoid
the <mach/*> business in drivers.
- Then we split out and modernize some platform data
headers for pata, and hwrandom, and top it up with
DT bindings and support for hwrandom.
* tag 'ixp4xx-arm-soc-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-nomadik:
ixp4xx: fix spelling mistake in Kconfig "Devce" -> "Device"
hw_random: ixp4xx: Add OF support
hw_random: ixp4xx: Add DT bindings
hw_random: ixp4xx: Turn into a module
hw_random: ixp4xx: Use SPDX license tag
hw_random: ixp4xx: enable compile-testing
pata: ixp4xx: split platform data to its own header
soc: ixp4xx: move cpu detection to linux/soc/ixp4xx/cpu.h
PCI: ixp4xx: Add a new driver for IXP4xx
PCI: ixp4xx: Add device tree bindings for IXP4xx
ARM/ixp4xx: Make NEED_MACH_IO_H optional
ARM/ixp4xx: Move the virtual IObases
Link: https://lore.kernel.org/r/CACRpkdbw6HSpp7k6q1FYGmtafLmdAu8bFnpHQOdfBDYYsdLbkw@mail.gmail.com
Signed-off-by: Olof Johansson <olof@lixom.net>
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Non-urgent fixes for omaps for v5.14 merge window
Warn and block suspend for am335x unless the PM related modules and
firmware are loaded and warn otherwise. Otherwise we easily end up
with a suspended system with nothing capable of waking it up.
We also drop a duplicated prototype for am33xx_init_early().
* tag 'omap-for-v5.14/fixes-not-urgent-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP2+: Block suspend for am3 and am4 if PM is not configured
ARM: OMAP2+: remove duplicated prototype
ARM: dts: dra7: Fix duplicate USB4 target module node
ARM: OMAP1: ams-delta: remove unused function ams_delta_camera_power
bus: ti-sysc: Fix flakey idling of uarts and stop using swsup_sidle_act
bus: ti-sysc: Fix am335x resume hang for usb otg module
ARM: OMAP2+: Fix build warning when mmc_omap is not built
ARM: OMAP1: isp1301-omap: Add missing gpiod_add_lookup_table function
ARM: OMAP1: Fix use of possibly uninitialized irq variable
bus: ti-sysc: Fix missing quirk flags for sata
Link: https://lore.kernel.org/r/pull-1624002812-396117@atomide.com
Signed-off-by: Olof Johansson <olof@lixom.net>
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* devcoredump support for display errors
* dpu: irq cleanup/refactor
* dpu: dt bindings conversion to yaml
* dsi: dt bindings conversion to yaml
* mdp5: alpha/blend_mode/zpos support
* a6xx: cached coherent buffer support
* a660 support
* gpu iova fault improvements:
- info about which block triggered the fault, etc
- generation of gpu devcoredump on fault
* assortment of other cleanups and fixes
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rob Clark <robdclark@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CAF6AEGs4=qsGBBbyn-4JWqW4-YUSTKh67X3DsPQ=T2D9aXKqNA@mail.gmail.com
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Daniel Borkmann says:
====================
pull-request: bpf 2021-06-23
The following pull-request contains BPF updates for your *net* tree.
We've added 14 non-merge commits during the last 6 day(s) which contain
a total of 13 files changed, 137 insertions(+), 64 deletions(-).
Note that when you merge net into net-next, there is a small merge conflict
between 9f2470fbc4cb ("skmsg: Improve udp_bpf_recvmsg() accuracy") from bpf
with c49661aa6f70 ("skmsg: Remove unused parameters of sk_msg_wait_data()")
from net-next. Resolution is to: i) net/ipv4/udp_bpf.c: take udp_msg_wait_data()
and remove err parameter from the function, ii) net/ipv4/tcp_bpf.c: take
tcp_msg_wait_data() and remove err parameter from the function, iii) for
net/core/skmsg.c and include/linux/skmsg.h: remove the sk_msg_wait_data()
implementation and its prototype in header.
The main changes are:
1) Fix BPF poke descriptor adjustments after insn rewrite, from John Fastabend.
2) Fix regression when using BPF_OBJ_GET with non-O_RDWR flags, from Maciej Żenczykowski.
3) Various bug and error handling fixes for UDP-related sock_map, from Cong Wang.
4) Fix patching of vmlinux BTF IDs with correct endianness, from Tony Ambardar.
5) Two fixes for TX descriptor validation in AF_XDP, from Magnus Karlsson.
6) Fix overflow in size calculation for bpf_map_area_alloc(), from Bui Quang Minh.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Oversight from
commit 6edbd6abb783d54f6ac4c3ed5cd9e50cff6c15e9
Author: Christian König <christian.koenig@amd.com>
Date: Mon May 10 16:14:09 2021 +0200
dma-buf: rename and cleanup dma_resv_get_excl v3
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Link: https://patchwork.freedesktop.org/patch/msgid/20210622165511.3169559-2-daniel.vetter@ffwll.ch
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It is easy to forget to call qcom_smem_state_put() after
a qcom_smem_state_get(). Introduce a devm_qcom_smem_state_get()
helper function that automates this so that qcom_smem_state_put()
is automatically called when a device is removed.
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210618111556.53416-1-stephan@gerhold.net
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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There is no point in using copy_init_pkru_to_fpregs() which in turn calls
write_pkru(). write_pkru() tries to fiddle with the task's xstate buffer
for nothing because the XRSTOR[S](init_fpstate) just cleared the xfeature
flag in the xstate header which makes get_xsave_addr() fail.
It's a useless exercise anyway because the reinitialization activates the
FPU so before the task's xstate buffer can be used again a XRSTOR[S] must
happen which in turn dumps the PKRU value.
Get rid of the now unused copy_init_pkru_to_fpregs().
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20210623121455.732508792@linutronix.de
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Pick up dependent changes which either went mainline (x86/urgent is
based on -rc7 and that contains them) as urgent fixes and the current
x86/urgent branch which contains two more urgent fixes, so that the
bigger FPU rework can base off ontop.
Signed-off-by: Borislav Petkov <bp@suse.de>
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Hi,
this is v2 from my patchset that add support for the TAS2505 to the tlv320aic32x4 driver.
kind regards,
Claudius
Changes from v1:
- clarified commit message of first patch, which add the type value to the struct
- removed unnecessary code to put and get speaker volume
- removed 'Gain' from 'HP Driver Playback Volume' control
- fixed rebase issues
Claudius Heine (3):
ASoC: tlv320aic32x4: add type to device private data struct
ASoC: tlv320aic32x4: add support for TAS2505
ASoC: tlv320aic32x4: dt-bindings: add TAS2505 to compatible
.../bindings/sound/tlv320aic32x4.txt | 1 +
sound/soc/codecs/tlv320aic32x4-i2c.c | 22 ++-
sound/soc/codecs/tlv320aic32x4-spi.c | 23 ++-
sound/soc/codecs/tlv320aic32x4.c | 139 +++++++++++++++++-
sound/soc/codecs/tlv320aic32x4.h | 10 ++
5 files changed, 186 insertions(+), 9 deletions(-)
base-commit: 70585216fe7730d9fb5453d3e2804e149d0fe201
--
2.32.0
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Add, via the adreno-smmu-priv interface, a way for the GPU to request
the SMMU to stall translation on faults, and then later resume the
translation, either retrying or terminating the current translation.
This will be used on the GPU side to "freeze" the GPU while we snapshot
useful state for devcoredump.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Acked-by: Jordan Crouse <jordan@cosmicpenguin.net>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210610214431.539029-5-robdclark@gmail.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
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Add a callback in adreno-smmu-priv to read interesting SMMU
registers to provide an opportunity for a richer debug experience
in the GPU driver.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20210610214431.539029-3-robdclark@gmail.com
Signed-off-by: Rob Clark <robdclark@chromium.org>
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- Support for the H_RPT_INVALIDATE hypercall
- Conversion of Book3S entry/exit to C
- Bug fixes
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One bit out of the previously completely reserved byte 10 in
the PHY capabilities is used since 802.11ax D7.0, add a new
define for it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210618133832.c026feb3873d.I380f52a05ddb4153bc77ff7f276a3484819f69b2@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Define the bit used for timing measurement support in extended
capabilities IE, used for time synchronization.
Signed-off-by: Krishnanand Prabhu <krishnanand.prabhu@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210618133832.b75f40765538.I92b50e43e29272c97d17ed5f37f216f4caf0f205@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Preparation work for removing the "enum rtw_ieee80211_category" in
"drivers/staging/rtl8188eu/include/ieee80211.h" and
"drivers/staging/rtl8723bs/include/ieee80211.h".
This enum is similar to "enum ieee80211_category" from
"include/linux/ieee80211.h". However it defines the value '6' as
RTW_WLAN_CATEGORY_FT.
So add a corresponding value in "ieee80211_category"
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/66be0187869bd7dae1c0b0785a32db695ee9872e.1624108556.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Vinod writes:
phy-for-5.14 version 2
- Updates:
- Yaml conversion for renesas,rcar-gen3 pcie phy and
rockchip-usb-phy bindings
- Support for devm_phy_get() taking NULL phy name
- New support:
- PCIe phy for Qualcomm IPQ60xx
- PCIe phy for Qualcomm SDX55
- USB phy for RK3308
- CAN transceivers phy for TI TCAN104x
- Innosilicon-based CSI dphy for rockchip
* tag 'phy-for-5.14_v2' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy: (36 commits)
phy: Revert "phy: ralink: Kconfig: convert mt7621-pci-phy into 'bool'"
phy: ti: dm816x: Fix the error handling path in 'dm816x_usb_phy_probe()
phy: uniphier-pcie: Fix updating phy parameters
phy/rockchip: add Innosilicon-based CSI dphy
dt-bindings: phy: add yaml binding for rockchip-inno-csi-dphy
phy: rockchip: remove redundant initialization of pointer cfg
phy: phy-can-transceiver: Add support for generic CAN transceiver driver
dt-bindings: phy: Add binding for TI TCAN104x CAN transceivers
phy: core: Reword the comment specifying the units of max_link_rate to be Mbps
phy: phy-mtk-hdmi: Remove redundant dev_err call in mtk_hdmi_phy_probe()
phy: phy-mtk-mipi-dsi: Remove redundant dev_err call in mtk_mipi_tx_probe()
phy: phy-mmp3-hsic: Remove redundant dev_err call in mmp3_hsic_phy_probe()
phy: bcm-ns-usb3: Remove redundant dev_err call in bcm_ns_usb3_mdio_probe()
MAINTAINERS: update marvell,armada-3700-utmi-phy.yaml reference
phy: phy-twl4030-usb: use DEVICE_ATTR_RO macro
dt-bindings: phy: convert rockchip-usb-phy.txt to YAML
phy: phy-rockchip-inno-usb2: add support for RK3308 USB phy
dt-bindings: phy: rockchip-inno-usb2: add compatible for rk3308 USB phy
phy: stm32: manage optional vbus regulator on phy_power_on/off
dt-bindings: phy: add vbus-supply optional property to phy-stm32-usbphyc
...
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Support to use address space of inner inode to cache compressed block,
in order to improve cache hit ratio of random read.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Once we release compressed blocks, we used to set IMMUTABLE bit. But it turned
out it disallows every fs operations which we don't need for compression.
Let's just prevent writing data only.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Backmerge Linux 5.13-rc7 to make some pulls from later bases apply,
and to bake in the conflicts so far.
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Add a flags argument to jbd2_journal_flush to enable discarding or
zero-filling the journal blocks while flushing the journal.
Signed-off-by: Leah Rumancik <leah.rumancik@gmail.com>
Link: https://lore.kernel.org/r/20210518151327.130198-1-leah.rumancik@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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This chunk is defined in rfc4820#section-3, and used to pad an
SCTP packet. The receiver must discard this chunk and continue
processing the rest of the chunks in the packet.
Add it now, as it will be bundled with a heartbeat chunk to probe
pmtu in the following patches.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Aharon Landau says:
====================
In case device supports only real-time timestamp, the kernel will fail to
create QP despite rdma-core requested such timestamp type.
It is because device returns free-running timestamp, and the conversion
from free-running to real-time is performed in the user space.
This series fixes it, by returning real-time timestamp.
====================
* mlx5_realtime_ts:
RDMA/mlx5: Support real-time timestamp directly from the device
RDMA/mlx5: Refactor get_ts_format functions to simplify code
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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Since
commit 6ec4476ac825 ("Raise gcc version requirement to 4.9")
we no longer support building the kernel with GCC 4.8; drop the
preprocess checks for __GNUC_MINOR__ version. It's implied that if
__GNUC_MAJOR__ is 4, then the only supported version of __GNUC_MINOR__
left is 9.
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210621231822.2848305-3-ndesaulniers@google.com
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noinstr implies that we would like the compiler to avoid instrumenting a
function. Add support for the compiler attribute
no_profile_instrument_function to compiler_attributes.h, then add
__no_profile to the definition of noinstr.
Link: https://lore.kernel.org/lkml/20210614162018.GD68749@worktop.programming.kicks-ass.net/
Link: https://reviews.llvm.org/D104257
Link: https://reviews.llvm.org/D104475
Link: https://reviews.llvm.org/D104658
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80223
Reviewed-by: Fangrui Song <maskray@google.com>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210621231822.2848305-2-ndesaulniers@google.com
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Linux 5.13-rc7
Needed for dependencies in following patches. Merge conflict in rxe_cmop.c
resolved by compining both patches.
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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The struct is not visible to user space and therefore should not use the
user visible data types.
Instead, use internal data types like other structures in the file.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The WWAN core not only multiplex the netdev configuration data, but
process it too, and needs some space to store its private data
associated with the netdev. Add a structure to keep common WWAN core
data. The structure will be stored inside the netdev private data before
WWAN driver private data and have a field to make it easier to access
the driver data. Also add a helper function that simplifies drivers
access to their data.
At the moment we use the common WWAN private data to store the WWAN data
link (channel) id at the time the link is created, and report it back to
user using the .fill_info() RTNL callback. This should help the user to
be aware which network interface is bound to which WWAN device data
channel.
Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
CC: M Chetan Kumar <m.chetan.kumar@intel.com>
CC: Intel Corporation <linuxwwan@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Most, if not each WWAN device driver will create a netdev for the
default data channel. Therefore, add an option for the WWAN netdev ops
registration function to create a default netdev for the WWAN device.
A WWAN device driver should pass a default data channel link id to the
ops registering function to request the creation of a default netdev, or
a special value WWAN_NO_DEFAULT_LINK to inform the WWAN core that the
default netdev should not be created.
For now, only wwan_hwsim utilize the default link creation option. Other
drivers will be reworked next.
Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
CC: M Chetan Kumar <m.chetan.kumar@intel.com>
CC: Intel Corporation <linuxwwan@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The WWAN netdev ops owner holding was used to protect from the
unexpected memory disappear. This approach causes a dependency cycle
(driver -> core -> driver) and effectively prevents a WWAN driver
unloading. E.g. WWAN hwsim could not be unloaded until all simulated
devices are removed:
~# modprobe wwan_hwsim devices=2
~# lsmod | grep wwan
wwan_hwsim 16384 2
wwan 20480 1 wwan_hwsim
~# rmmod wwan_hwsim
rmmod: ERROR: Module wwan_hwsim is in use
~# echo > /sys/kernel/debug/wwan_hwsim/hwsim0/destroy
~# echo > /sys/kernel/debug/wwan_hwsim/hwsim1/destroy
~# lsmod | grep wwan
wwan_hwsim 16384 0
wwan 20480 1 wwan_hwsim
~# rmmod wwan_hwsim
For a real device driver this will cause an inability to unload module
until a served device is physically detached.
Since the last commit we are removing all child netdev(s) when a driver
unregister the netdev ops. This allows us to permit the driver
unloading, since any sane driver will call ops unregistering on a device
deinitialization. So, remove the holding of an ops owner to make it
easier to unload a driver module. The owner field has also beed removed
from the ops structure as there are no more users of this field.
Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
Marcin Wojtas
Christoph Hellwig
Toke Høiland-Jørgensen
Paul E. McKenney
Jing Zhang
Zhang Yi
Randy Dunlap
Thomas Weißschuh
Daniel Vetter
Will Deacon
Vladimir Zapolskiy
Greg Kroah-Hartman
Beata Michalska
Herbert Xu
Olof Johansson
Dave Airlie
David S. Miller
Stephan Gerhold
Thomas Gleixner
Mark Brown
Borislav Petkov
Rob Clark
Jordan Crouse
Paolo Bonzini
Johannes Berg
Krishnanand Prabhu
Christophe JAILLET
Chao Yu
Jaegeuk Kim
Leah Rumancik
Xin Long
Jason Gunthorpe
Nick Desaulniers
Ido Schimmel
Sergey Ryazanov