On Tue, Dec 15, 2015 at 8:30 PM, Matan Barak <mat...@mellanox.com> wrote:
> This patch-set adds user-space support for time-stamping in mlx5_ib. > It implements the necessary API: > (a) ib_create_cq_ex - Add support for CQ creation flags > (b) ib_query_device - return timestamp_mask and hca_core_clock. > We also add support for mmaping the HCA's free running clock. > In order to do so, we use the response of the vendor's extended > part in init_ucontext. This allows us to pass the page offset > of the free running clock register to the user-space driver. > In order to implement it in a future extensible manner, we use the > same mechanism of verbs extensions to the mlx5 vendor part as well. Hi Doug, As Matan is now the maintainer of the mlx5_ib driver and this series doesn't add any IB/core changes, we see no reason that it can't go into 4.5. make sense? Or > Changes from v1: > * Change ib_is_udata_cleared to use memchr_inv. > > Changes from v0: > * Limit mmap PAGE_SIZE to 4K (security wise). > * Optimize ib_is_udata_cleared. > * Pass hca_core_clock_offset in the vendor's response part of init_ucontext. > > Matan Barak (5): > IB/mlx5: Add create_cq extended command > IB/core: Add ib_is_udata_cleared > IB/mlx5: Add support for hca_core_clock and timestamp_mask > IB/mlx5: Add hca_core_clock_offset to udata in init_ucontext > IB/mlx5: Mmap the HCA's core clock register to user-space > > drivers/infiniband/hw/mlx5/cq.c | 7 ++++ > drivers/infiniband/hw/mlx5/main.c | 67 > +++++++++++++++++++++++++++++++----- > drivers/infiniband/hw/mlx5/mlx5_ib.h | 7 +++- > drivers/infiniband/hw/mlx5/user.h | 12 +++++-- > include/linux/mlx5/device.h | 7 ++-- > include/linux/mlx5/mlx5_ifc.h | 9 +++-- > include/rdma/ib_verbs.h | 27 +++++++++++++++ > 7 files changed, 120 insertions(+), 16 deletions(-) > > -- > 2.1.0 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-rdma" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
