On Wed, Mar 27, 2019 at 11:25 AM Greg KH wrote:
>
> On Tue, Mar 05, 2019 at 12:54:29PM -0800, John Stultz wrote:
> > From: "Andrew F. Davis"
> >
> > This framework allows a unified userspace interface for dma-buf
> > exporters, allowing userland to allocate specific types of
> > memory for use
Hi John,
On Tue, Mar 05, 2019 at 12:54:29PM -0800, John Stultz wrote:
> From: "Andrew F. Davis"
[snip]
> +
> +#define NUM_HEAP_MINORS 128
> +static DEFINE_IDR(dma_heap_idr);
> +static DEFINE_MUTEX(minor_lock); /* Protect idr accesses */
I saw that Matthew Wilcox is trying to nuke idr:
On 3/6/19 1:03 PM, John Stultz wrote:
> On Wed, Mar 6, 2019 at 10:18 AM Andrew F. Davis wrote:
>>
>> On 3/5/19 2:54 PM, John Stultz wrote:
>>> From: "Andrew F. Davis"
>>>
>>> This framework allows a unified userspace interface for dma-buf
>>> exporters, allowing userland to allocate specific
On Wed, Mar 6, 2019 at 10:18 AM Andrew F. Davis wrote:
>
> On 3/5/19 2:54 PM, John Stultz wrote:
> > From: "Andrew F. Davis"
> >
> > This framework allows a unified userspace interface for dma-buf
> > exporters, allowing userland to allocate specific types of
> > memory for use in dma-buf
On Wed, Mar 6, 2019 at 8:12 AM Benjamin Gaignard
wrote:
> Le mar. 5 mars 2019 à 21:54, John Stultz a écrit :
> > +/**
> > + * DOC: DMABUF Heaps Userspace API
> > + *
> > + */
> > +
> > +/* Currently no flags */
> > +#define DMA_HEAP_VALID_FLAGS (0)
>
> I think here you need to allow flags like
On 3/5/19 2:54 PM, John Stultz wrote:
> From: "Andrew F. Davis"
>
> This framework allows a unified userspace interface for dma-buf
> exporters, allowing userland to allocate specific types of
> memory for use in dma-buf sharing.
>
> Each heap is given its own device node, which a user can
>
Le mar. 5 mars 2019 à 21:54, John Stultz a écrit :
>
> From: "Andrew F. Davis"
>
> This framework allows a unified userspace interface for dma-buf
> exporters, allowing userland to allocate specific types of
> memory for use in dma-buf sharing.
>
> Each heap is given its own device node, which a
From: "Andrew F. Davis"
This framework allows a unified userspace interface for dma-buf
exporters, allowing userland to allocate specific types of
memory for use in dma-buf sharing.
Each heap is given its own device node, which a user can
allocate a dma-buf fd from using the DMA_HEAP_IOC_ALLOC.
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