On Tue, Dec 04, 2018 at 10:54:10AM -0800, Dave Hansen wrote:
> On 12/4/18 10:49 AM, Jerome Glisse wrote:
> > Policy is same kind of story, this email is long enough now :) But
> > i can write one down if you want.
>
> Yes, please. I'd love to see the code.
>
> We'll do the same on the "HMAT" side and we can compare notes.
Example use case ? Example use are:
Application create a range of virtual address with mmap() for the
input dataset. Application knows it will use GPU on it directly so
it calls hbind() to set a policy for the range to use GPU memory
for any new allocation for the range.
Application directly stream the dataset to GPU memory through the
virtual address range thanks to the policy.
Application create a range of virtual address with mmap() to store
the output result of GPU jobs its about to launch. It binds the
range of virtual address to GPU memory so that allocation use GPU
memory for the range.
Application can also use policy binding as a slow migration path
ie set a policy to a new target memory so that new allocation are
directed to this new target.
Or do you want example userspace program like the one in the last
patch of this serie ?
Cheers,
Jérôme
