On Fri, Apr 5, 2024 at 5:28 PM Paolo Bonzini wrote:
>
> The .change_pte() MMU notifier callback was intended as an
> optimization. The original point of it was that KSM could tell KVM to flip
> its secondary PTE to a new location without having to first zap it. At
> the time there was also an .inv
There is once warn in __arm_kprobe_ftrace() on:
ret = ftrace_set_filter_ip(ops, (unsigned long)p->addr, 0, 0);
if (WARN_ONCE(..., "Failed to arm kprobe-ftrace at %pS (error %d)\n", ...)
return ret;
This warning is due to 'p->addr' is not a valid ftrace_location and
that invalid 'p->addr' was
On Fri, Mar 29, 2024 at 6:42 PM Michael S. Tsirkin wrote:
>
> On Fri, Mar 29, 2024 at 06:39:33PM +0800, Jason Wang wrote:
> > On Fri, Mar 29, 2024 at 5:13 PM Michael S. Tsirkin wrote:
> > >
> > > On Wed, Mar 27, 2024 at 05:08:57PM +0800, Jason Wang wrote:
> > > > On Thu, Mar 21, 2024 at 3:00 PM M
On Wed, Apr 3, 2024 at 5:21 AM Michael S. Tsirkin wrote:
>
> VDPA_GET_VRING_SIZE by mistake uses the already occupied
> ioctl # 0x80 and we never noticed - it happens to work
> because the direction and size are different, but confuses
> tools such as perf which like to look at just the number,
>
On 04/06, Masami Hiramatsu wrote:
>
> On Fri, 5 Apr 2024 13:02:30 +0200
> Oleg Nesterov wrote:
>
> > With or without this patch userpace can also do
> >
> > foo() { <-- retprobe1
> > bar() {
> > jump to xol_area
> > }
> > }
> >
> > handle_trampol
gt; > +What: /sys/bus/iio/devices/iio:deviceX/in_temp_input
> > KernelVersion: 2.6.38
> > Contact: linux-...@vger.kernel.org
> > Description:
> >
> > ---
> > base-commit: 8568bb2ccc278f344e6ac44af6ed010a90aa88dc
> > change-id: 20240406-in_temp_input-4505d7fafff8
> >
> > Best regards,
>
>
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 m
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 r
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().
Signed-off-by: Vincent Donnefort
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 25476ead681b..cc9e
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 ri
nelVersion: 2.6.38
> Contact: linux-...@vger.kernel.org
> Description:
>
> ---
> base-commit: 8568bb2ccc278f344e6ac44af6ed010a90aa88dc
> change-id: 20240406-in_temp_input-4505d7fafff8
>
> Best regards,
On Sat, 6 Apr 2024 at 18:36, Luca Weiss wrote:
>
> Enable the vibrator connected to PM8941 found on the Sony shinano
> platform.
>
> Signed-off-by: Luca Weiss
> ---
> .../arm/boot/dts/qcom/qcom-msm8974pro-sony-xperia-shinano-common.dtsi | 4
>
> 1 file changed, 4 insertions(+)
Reviewed-b
@@ led@7 {
};
};
+&pm8941_vib {
+ status = "okay";
+};
+
&remoteproc_adsp {
cx-supply = <&pm8841_s2>;
status = "okay";
---
base-commit: 956abeb75f90eac3d5ba1f4cff7c048f7c079502
change-id: 20240406-shinano-vib-80e27e9bab2c
Best regards,
--
Luca Weiss
-...@vger.kernel.org
Description:
---
base-commit: 8568bb2ccc278f344e6ac44af6ed010a90aa88dc
change-id: 20240406-in_temp_input-4505d7fafff8
Best regards,
--
Luca Weiss
Hi Joe and Petr :
> On Apr 5, 2024, at 01:50, Joe Lawrence wrote:
>
> On 4/4/24 11:17, Petr Mladek wrote:
>> On Tue 2024-04-02 09:52:31, Joe Lawrence wrote:
>>> On Tue, Apr 02, 2024 at 11:09:54AM +0800, zhangwar...@gmail.com wrote:
From: Wardenjohn
In livepatch, using KLP_UNDEF
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