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authorYishai Hadas <yishaih@nvidia.com>2020-09-30 19:38:26 +0300
committerJason Gunthorpe <jgg@nvidia.com>2020-10-01 22:44:05 +0300
commit8bfafde08693cc2e740134c3e32b40254f5d82ae (patch)
treea7f58420a3fcb448ce2794c60141e9c0d5565a6e /include/rdma
parent36f30e486dce22345c2dd3a3ba439c12cd67f6ba (diff)
downloadlinux-8bfafde08693cc2e740134c3e32b40254f5d82ae.tar.xz
IB/core: Enable ODP sync without faulting
Enable ODP sync without faulting, this improves performance by reducing the number of page faults in the system. The gain from this option is that the device page table can be aligned with the presented pages in the CPU page table without causing page faults. As of that, the overhead on data path from hardware point of view to trigger a fault which end-up by calling the driver to bring the pages will be dropped. Link: https://lore.kernel.org/r/20200930163828.1336747-3-leon@kernel.org Signed-off-by: Yishai Hadas <yishaih@nvidia.com> Signed-off-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'include/rdma')
-rw-r--r--include/rdma/ib_umem_odp.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/rdma/ib_umem_odp.h b/include/rdma/ib_umem_odp.h
index a53b62ac8a9d..0844c1d05ac6 100644
--- a/include/rdma/ib_umem_odp.h
+++ b/include/rdma/ib_umem_odp.h
@@ -94,7 +94,7 @@ ib_umem_odp_alloc_child(struct ib_umem_odp *root_umem, unsigned long addr,
void ib_umem_odp_release(struct ib_umem_odp *umem_odp);
int ib_umem_odp_map_dma_and_lock(struct ib_umem_odp *umem_odp, u64 start_offset,
- u64 bcnt, u64 access_mask);
+ u64 bcnt, u64 access_mask, bool fault);
void ib_umem_odp_unmap_dma_pages(struct ib_umem_odp *umem_odp, u64 start_offset,
u64 bound);