From: Hao Ge
When the condition ei->is_free holds,we return NULL directly to
avoid update_events_attr to use NULL point about ei.
Fixes: 8186fff7ab64 ("tracefs/eventfs: Use root and instance inodes as default
ownership")
Signed-off-by: Hao Ge
---
fs/tracefs/event_inode.c | 3 +--
1 file
Hi,
On 5/10/2024 7:19 PM, Miklos Szeredi wrote:
> On Fri, 26 Apr 2024 at 16:38, Hou Tao wrote:
>> From: Hou Tao
>>
>> When invoking virtio_fs_enqueue_req() through kworker, both the
>> allocation of the sg array and the bounce buffer still use GFP_ATOMIC.
>> Considering the size of the sg array
Hi, everyone:
Could someone help to review this patch?
Best regards,
Ainux Wang.
Ainux Wang 于2024年5月7日周二 13:15写道：
>
> Hi, everyone:
>
> Could someone review this patch?
>
> Best regards,
> Ainux Wang.
>
> 于2024年4月17日周三 13:35写道：
>
> >
> > From: Wang Yao
> >
> > Commit ddb5cdbafaaa ("kbuild:
AMD-Xilinx zynqmp platform contains on-chip sram memory (OCM).
R5 cores can access OCM and access is faster than DDR memory but slower
than TCM memories available. Sram region can have optional multiple
power-domains.
Signed-off-by: Tanmay Shah
---
Changes in v2:
- Fix integer assignement to
It is possible that remote processor is already running before
linux boot or remoteproc platform driver probe. Implement required
remoteproc framework ops to provide resource table address and
connect or disconnect with remote processor in such case.
Signed-off-by: Tanmay Shah
---
Changes in
Attach detach ops are needed to connect to remote processor that is
running before remoteproc driver is probed. Implement remoteproc
framework ops that enables such use case on AMD-Xilinx platforms.
Remote processor can also use On Chip sram Memory (OCM) for various
purpose. For example, for fast
Hi Dmitrii,
Thank you very much for uncovering and fixing this issue.
On 4/30/2024 7:38 AM, Dmitrii Kuvaiskii wrote:
> On Mon, Apr 29, 2024 at 04:11:03PM +0300, Jarkko Sakkinen wrote:
>> On Mon Apr 29, 2024 at 1:43 PM EEST, Dmitrii Kuvaiskii wrote:
>>> Two enclave threads may try to add and
Hi Dmitrii,
Thank you so much for finding as well as fixing this issue.
On 4/30/2024 7:37 AM, Dmitrii Kuvaiskii wrote:
> On Mon, Apr 29, 2024 at 04:04:24PM +0300, Jarkko Sakkinen wrote:
>> On Mon Apr 29, 2024 at 1:43 PM EEST, Dmitrii Kuvaiskii wrote:
>>> Two enclave threads may try to access the
Hello RT-list!
I'm pleased to announce the 5.10.216-rt108 stable release.
This release is just an update to the new stable 5.10.216 version,
without any RT specific changes.
You can get this release via the git tree at:
git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git
On 5/10/24 12:06, Dongli Zhang wrote:
> } else {
> + /*
> + * This call borrows from the comments and implementation
> + * of apic_update_vector(): "If the target CPU is offline
> + * then the regular release mechanism via the cleanup
> +
The absence of IRQD_MOVE_PCNTXT prevents immediate effectiveness of
interrupt affinity reconfiguration via procfs. Instead, the change is
deferred until the next instance of the interrupt being triggered on the
original CPU.
When the interrupt next triggers on the original CPU, the new affinity
The absence of IRQD_MOVE_PCNTXT prevents immediate effectiveness of
interrupt affinity reconfiguration via procfs. Instead, the change is
deferred until the next instance of the interrupt being triggered on the
original CPU.
When the interrupt next triggers on the original CPU, the new affinity
On Fri, 10 May 2024 12:03:12 +0100
Vincent Donnefort wrote:
> > I'm not particularly happy about us calling vm_insert_pages with NULL
> > pointers stored in pages.
> >
> > Should we instead do
> >
> > if (WARN_ON_ONCE(s >= nr_subbufs)) {
> > err = -EINVAL;
> > goto out;
> > }
> >
> >
On Thu, May 09, 2024 at 10:54:51AM -0500, Andrew Davis wrote:
> On 5/9/24 10:22 AM, Mathieu Poirier wrote:
> > On Wed, 8 May 2024 at 09:36, Andrew Davis wrote:
> > >
> > > On 5/6/24 3:46 PM, Mathieu Poirier wrote:
> > > > Good day,
> > > >
> > > > I have started reviewing this patchset.
On 10.05.24 16:04, Vincent Donnefort wrote:
In preparation for allowing the user-space to map a ring-buffer, add
a set of mapping functions:
ring_buffer_{map,unmap}()
And controls on the ring-buffer:
ring_buffer_map_get_reader() /* swap reader and head */
Mapping the ring-buffer also
It is now possible to mmap() a ring-buffer to stream its content. Add
some documentation and a code example.
Signed-off-by: Vincent Donnefort
diff --git a/Documentation/trace/index.rst b/Documentation/trace/index.rst
index 5092d6c13af5..0b300901fd75 100644
--- a/Documentation/trace/index.rst
Currently, user-space extracts data from the ring-buffer via splice,
which is handy for storage or network sharing. However, due to splice
limitations, it is imposible to do real-time analysis without a copy.
A solution for that problem is to let the user-space map the ring-buffer
directly.
The
In preparation for allowing the user-space to map a ring-buffer, add
a set of mapping functions:
ring_buffer_{map,unmap}()
And controls on the ring-buffer:
ring_buffer_map_get_reader() /* swap reader and head */
Mapping the ring-buffer also involves:
A unique ID for each subbuf of the
In preparation for the ring-buffer memory mapping, allocate compound
pages for the ring-buffer sub-buffers to enable us to map them to
user-space with vm_insert_pages().
Acked-by: David Hildenbrand
Signed-off-by: Vincent Donnefort
diff --git a/kernel/trace/ring_buffer.c
The tracing ring-buffers can be stored on disk or sent to network
without any copy via splice. However the later doesn't allow real time
processing of the traces. A solution is to give userspace direct access
to the ring-buffer pages via a mapping. An application can now become a
consumer of the
; ++
> 2 files changed, 109 insertions(+)
> ---
> base-commit: 940d65ef852b4a58c9115eb82b07844c999b8356
> change-id: 20240510-sc7280-apr-c6d10ac2c331
>
> Best regards,
> --
> Luca Weiss
>
>
>
My bot found new DTB warnings on the .dts files a
The virtnet_send_command_reply() function returns true on success or
false on failure. The "ok" variable is true/false depending on whether
it succeeds or not. It's up to the caller to translate the true/false
into -EINVAL on failure or zero for success.
The bug is that __virtnet_get_hw_stats()
Add the different services found on APR on some devices with SC7280 SoC.
Additionally add an empty sound node in the root node as is seen on
other SoC dtsi files so device dt's can easily use that.
Signed-off-by: Luca Weiss
---
arch/arm64/boot/dts/qcom/sc7280.dtsi | 73
Add the required nodes for sound playback via a connected external
display (DisplayPort over USB-C).
Signed-off-by: Luca Weiss
---
Depends on a bunch of patches upstream doing bringup of Display (DSI),
DisplayPort, GPU, and then finally audio could land. But we're blocked
on DPU 1:1:1 topology
arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts | 36 +++
arch/arm64/boot/dts/qcom/sc7280.dtsi | 73 ++
2 files changed, 109 insertions(+)
---
base-commit: 940d65ef852b4a58c9115eb82b07844c999b8356
change-id: 20240510-sc7280-apr-c6d10ac2c331
Best regards,
--
Luca Weiss
On Fri, 26 Apr 2024 at 16:38, Hou Tao wrote:
>
> From: Hou Tao
>
> When invoking virtio_fs_enqueue_req() through kworker, both the
> allocation of the sg array and the bounce buffer still use GFP_ATOMIC.
> Considering the size of the sg array may be greater than PAGE_SIZE, use
> GFP_NOFS instead
[...]
> > > +
> > > + while (s < nr_subbufs && p < nr_pages) {
> > > + struct page *page = virt_to_page(cpu_buffer->subbuf_ids[s]);
> > > + int off = 0;
> > > +
> > > + for (; off < (1 << (subbuf_order)); off++, page++) {
> > > + if (p >= nr_pages)
> > > +
On Fri, May 10, 2024 at 11:15:59AM +0200, David Hildenbrand wrote:
> On 09.05.24 13:05, Vincent Donnefort wrote:
> > On Tue, May 07, 2024 at 10:34:02PM -0400, Steven Rostedt wrote:
> > > On Tue, 30 Apr 2024 12:13:51 +0100
> > > Vincent Donnefort wrote:
> > >
> > > > +#ifdef CONFIG_MMU
> > > >
On 08.05.24 04:34, Steven Rostedt wrote:
On Tue, 30 Apr 2024 12:13:51 +0100
Vincent Donnefort wrote:
+#ifdef CONFIG_MMU
+static int __rb_map_vma(struct ring_buffer_per_cpu *cpu_buffer,
+ struct vm_area_struct *vma)
+{
+ unsigned long nr_subbufs, nr_pages,
On 09.05.24 13:05, Vincent Donnefort wrote:
On Tue, May 07, 2024 at 10:34:02PM -0400, Steven Rostedt wrote:
On Tue, 30 Apr 2024 12:13:51 +0100
Vincent Donnefort wrote:
+#ifdef CONFIG_MMU
+static int __rb_map_vma(struct ring_buffer_per_cpu *cpu_buffer,
+ struct
On 2024/5/10 16:20, Vlastimil Babka wrote:
On 5/10/24 9:59 AM, wuqiang.matt wrote:
On 2024/5/7 21:55, Vlastimil Babka wrote:
>>
+ } while (!try_cmpxchg_acquire(>tail, , tail + 1));
+
+ /* now the tail position is reserved for the given obj */
+
It has been seen that for some network mac drivers (i.e. lan78xx) the
related module for the phy is loaded dynamically depending on the current
hardware. In this case, the associated phy is read using mdio bus and then
the associated phy module is loaded during runtime (kernel function
> I think it's important a note about backward compatibility. If a system
> doesn't have a new-enough depmod, it will basically not create the new
> weadep file and initrd generators won't be able to use that. Only
> downside is not being able to use the new feature, but it should still
> work as
On 5/10/24 9:59 AM, wuqiang.matt wrote:
> On 2024/5/7 21:55, Vlastimil Babka wrote:
>>
>>> + } while (!try_cmpxchg_acquire(>tail, , tail + 1));
>>> +
>>> + /* now the tail position is reserved for the given obj */
>>> + WRITE_ONCE(slot->entries[tail & slot->mask], obj);
>>> + /* update
On 2024/5/7 21:55, Vlastimil Babka wrote:
On 4/24/24 11:52 PM, Andrii Nakryiko wrote:
objpool_push() and objpool_pop() are very performance-critical functions
and can be called very frequently in kretprobe triggering path.
As such, it makes sense to allow compiler to inline them completely to
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