Felix Kuehling
35b07e1e28
Use MAP_POPULATE when allocating anonymous system memory for later
GPU mapping as a userptr. This can speed up large allocations by
more than factor 2. I suspect populating pages in this way is more
efficient than the CPU page fault code path triggered by
get_user_pages in the kernel.
Change-Id: I188bbc1462ccb650d48cbfb1080dbb8eb7ada8b5
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
[ROCm/ROCR-Runtime commit: 8f26c0c40c]