On Sat, Feb 13, 2021 at 10:45:17AM +0100, Claudio Jeker wrote:
> On Sat, Feb 13, 2021 at 10:26:48AM +0100, Marcus Glocker wrote:
> > On Sat, Feb 13, 2021 at 08:30:04AM +0100, Claudio Jeker wrote:
> >
> > > On Fri, Feb 12, 2021 at 10:59:05PM +0100, Jeremie Courreges-Anglas wrote:
> > > > On Wed,
On Sat, Feb 13, 2021 at 10:26:48AM +0100, Marcus Glocker wrote:
> On Sat, Feb 13, 2021 at 08:30:04AM +0100, Claudio Jeker wrote:
>
> > On Fri, Feb 12, 2021 at 10:59:05PM +0100, Jeremie Courreges-Anglas wrote:
> > > On Wed, Feb 10 2021, Martin Pieuchot wrote:
> > >
> > > [...]
> > >
> > > >
On Sat, Feb 13, 2021 at 08:30:04AM +0100, Claudio Jeker wrote:
> On Fri, Feb 12, 2021 at 10:59:05PM +0100, Jeremie Courreges-Anglas wrote:
> > On Wed, Feb 10 2021, Martin Pieuchot wrote:
> >
> > [...]
> >
> > > Which fields is the new lock protecting? Why isn't the KERNEL_LOCK()
> > > enough?
On Fri, Feb 12, 2021 at 10:59:05PM +0100, Jeremie Courreges-Anglas wrote:
> On Wed, Feb 10 2021, Martin Pieuchot wrote:
>
> [...]
>
> > Which fields is the new lock protecting? Why isn't the KERNEL_LOCK()
> > enough?
>
> When I mentioned this potential lack of locking to Marcus, I was
>
On Wed, Feb 10 2021, Martin Pieuchot wrote:
[...]
> Which fields is the new lock protecting? Why isn't the KERNEL_LOCK()
> enough?
When I mentioned this potential lack of locking to Marcus, I was
mistaken. Some of the functions in video.c are called from syscalls
that are marked NOLOCK. But
On 09/02/21(Tue) 20:35, Marcus Glocker wrote:
> jca@ has recently committed a change to video(4) to allow the same
> process to do multiple opens on the same video device to satisfy
> certain applications, and start to go in to the V4L2 "1.1.4 Multiple
> Opens" specification direction as described
jca@ has recently committed a change to video(4) to allow the same
process to do multiple opens on the same video device to satisfy
certain applications, and start to go in to the V4L2 "1.1.4 Multiple
Opens" specification direction as described here:
On Wed, Jan 06 2021, Marcus Glocker wrote:
> On Tue, Jan 05, 2021 at 11:54:31PM +0100, Jeremie Courreges-Anglas wrote:
[...]
>> Here's the diff. IIUC the use of atomic operations isn't strictly
>> needed here since open(2) runs with the kernel lock, but the result
>> is easy to understand IMO.
On Tue, Jan 05, 2021 at 11:54:31PM +0100, Jeremie Courreges-Anglas wrote:
>
> I hit a weird failure with firefox and BigBlueButton
> (https://bigbluebutton.org/) where firefox can't use my webcam.
> video(1) works, same for other webrtc sites in firefox, eg meet.jit.si.
> ktrace shows that a
I hit a weird failure with firefox and BigBlueButton
(https://bigbluebutton.org/) where firefox can't use my webcam.
video(1) works, same for other webrtc sites in firefox, eg meet.jit.si.
ktrace shows that a single firefox process tries to open /dev/video0
more than once, and that fails with
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