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| author | Yishai Hadas <yishaih@nvidia.com> | 2020-09-30 18:38:26 +0200 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2020-10-01 21:44:05 +0200 |
| commit | 8bfafde08693cc2e740134c3e32b40254f5d82ae (patch) | |
| tree | a7f58420a3fcb448ce2794c60141e9c0d5565a6e /include/rdma | |
| parent | IB/core: Improve ODP to use hmm_range_fault() (diff) | |
| download | linux-8bfafde08693cc2e740134c3e32b40254f5d82ae.tar.xz linux-8bfafde08693cc2e740134c3e32b40254f5d82ae.zip | |
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.h | 2 |
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); |