On Wed, Jun 22, 2022 at 04:14:45PM +0800, Zhangfei Gao wrote:
> Hi, Greg
>
> On 2022/6/21 下午3:44, Greg Kroah-Hartman wrote:
> > On Tue, Jun 21, 2022 at 03:37:31PM +0800, Zhangfei Gao wrote:
> > >
> > > On 2022/6/20 下午9:36, Greg Kroah-Hartman wrote:
> > > > On Mon, Jun 20, 2022 at 02:24:31PM
Hi, Greg
On 2022/6/21 下午3:44, Greg Kroah-Hartman wrote:
On Tue, Jun 21, 2022 at 03:37:31PM +0800, Zhangfei Gao wrote:
On 2022/6/20 下午9:36, Greg Kroah-Hartman wrote:
On Mon, Jun 20, 2022 at 02:24:31PM +0100, Jean-Philippe Brucker wrote:
On Fri, Jun 17, 2022 at 02:05:21PM +0800, Zhangfei Gao
On Tue, Jun 21, 2022 at 03:37:31PM +0800, Zhangfei Gao wrote:
>
>
> On 2022/6/20 下午9:36, Greg Kroah-Hartman wrote:
> > On Mon, Jun 20, 2022 at 02:24:31PM +0100, Jean-Philippe Brucker wrote:
> > > On Fri, Jun 17, 2022 at 02:05:21PM +0800, Zhangfei Gao wrote:
> > > > > The refcount only ensures
On 2022/6/20 下午9:36, Greg Kroah-Hartman wrote:
On Mon, Jun 20, 2022 at 02:24:31PM +0100, Jean-Philippe Brucker wrote:
On Fri, Jun 17, 2022 at 02:05:21PM +0800, Zhangfei Gao wrote:
The refcount only ensures that the uacce_device object is not freed as
long as there are open fds. But
On Mon, Jun 20, 2022 at 02:24:31PM +0100, Jean-Philippe Brucker wrote:
> >From c7c2b051ec19285bbb973f8a2a5e58bb5326e00e Mon Sep 17 00:00:00 2001
> From: Jean-Philippe Brucker
> Date: Mon, 20 Jun 2022 10:10:41 +0100
> Subject: [PATCH] uacce: Tidy up locking
>
> The uacce driver must deal with a
On Mon, Jun 20, 2022 at 02:24:31PM +0100, Jean-Philippe Brucker wrote:
> On Fri, Jun 17, 2022 at 02:05:21PM +0800, Zhangfei Gao wrote:
> > > The refcount only ensures that the uacce_device object is not freed as
> > > long as there are open fds. But uacce_remove() can run while there are
> > >
On Fri, Jun 17, 2022 at 10:23:13PM +0800, Zhangfei Gao wrote:
> @@ -312,12 +345,20 @@ static ssize_t available_instances_show(struct device
> *dev,
> char *buf)
> {
> struct uacce_device *uacce = to_uacce_device(dev);
> + ssize_t ret;
>
> - if
On Fri, Jun 17, 2022 at 02:05:21PM +0800, Zhangfei Gao wrote:
> > The refcount only ensures that the uacce_device object is not freed as
> > long as there are open fds. But uacce_remove() can run while there are
> > open fds, or fds in the process of being opened. And atfer uacce_remove()
> >
On 2022/6/17 下午4:20, Zhangfei Gao wrote:
On 2022/6/17 下午2:05, Zhangfei Gao wrote:
On 2022/6/16 下午4:14, Jean-Philippe Brucker wrote:
On Thu, Jun 16, 2022 at 12:10:18PM +0800, Zhangfei Gao wrote:
diff --git a/drivers/misc/uacce/uacce.c b/drivers/misc/uacce/uacce.c
index
On 2022/6/17 下午2:05, Zhangfei Gao wrote:
On 2022/6/16 下午4:14, Jean-Philippe Brucker wrote:
On Thu, Jun 16, 2022 at 12:10:18PM +0800, Zhangfei Gao wrote:
diff --git a/drivers/misc/uacce/uacce.c b/drivers/misc/uacce/uacce.c
index 281c54003edc..b6219c6bfb48 100644
---
On 2022/6/16 下午4:14, Jean-Philippe Brucker wrote:
On Thu, Jun 16, 2022 at 12:10:18PM +0800, Zhangfei Gao wrote:
diff --git a/drivers/misc/uacce/uacce.c b/drivers/misc/uacce/uacce.c
index 281c54003edc..b6219c6bfb48 100644
--- a/drivers/misc/uacce/uacce.c
+++ b/drivers/misc/uacce/uacce.c
@@
On Thu, Jun 16, 2022 at 12:10:18PM +0800, Zhangfei Gao wrote:
> > > diff --git a/drivers/misc/uacce/uacce.c b/drivers/misc/uacce/uacce.c
> > > index 281c54003edc..b6219c6bfb48 100644
> > > --- a/drivers/misc/uacce/uacce.c
> > > +++ b/drivers/misc/uacce/uacce.c
> > > @@ -136,9 +136,16 @@ static int
Hi, Jean
On 2022/6/15 下午11:16, Jean-Philippe Brucker wrote:
Hi,
On Fri, Jun 10, 2022 at 08:34:23PM +0800, Zhangfei Gao wrote:
The uacce parent's module can be removed when uacce is working,
which may cause troubles.
If rmmod/uacce_remove happens just after fops_open: bind_queue,
the
Hi,
On Fri, Jun 10, 2022 at 08:34:23PM +0800, Zhangfei Gao wrote:
> The uacce parent's module can be removed when uacce is working,
> which may cause troubles.
>
> If rmmod/uacce_remove happens just after fops_open: bind_queue,
> the uacce_remove can not remove the bound queue since it is not
>
The uacce parent's module can be removed when uacce is working,
which may cause troubles.
If rmmod/uacce_remove happens just after fops_open: bind_queue,
the uacce_remove can not remove the bound queue since it is not
added to the queue list yet, which blocks the uacce_disable_sva.
Change
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