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| author | Jason Gunthorpe <jgg@nvidia.com> | 2020-10-26 16:23:11 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2020-11-02 21:53:54 +0300 |
| commit | f22c30aa6d27597a6da665db1a5f099e4903ecc7 (patch) | |
| tree | 7c6231cb6b865add93d74c0c823c70db55e7533e /drivers/infiniband/hw/mlx5/mr.c | |
| parent | aab8d3966d2c2aa6c59fbacdb17d82156653754f (diff) | |
| download | linux-f22c30aa6d27597a6da665db1a5f099e4903ecc7.tar.xz | |
RDMA/mlx5: Move xlt_emergency_page_mutex into mr.c
This is the only user, so remove the wrappers.
Link: https://lore.kernel.org/r/20201026132314.1336717-3-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx5/mr.c')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/mr.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c index 1cf57a921dac..fd14ced11593 100644 --- a/drivers/infiniband/hw/mlx5/mr.c +++ b/drivers/infiniband/hw/mlx5/mr.c @@ -41,6 +41,13 @@ #include <rdma/ib_verbs.h> #include "mlx5_ib.h" +/* + * We can't use an array for xlt_emergency_page because dma_map_single doesn't + * work on kernel modules memory + */ +unsigned long xlt_emergency_page; +static DEFINE_MUTEX(xlt_emergency_page_mutex); + enum { MAX_PENDING_REG_MR = 8, }; @@ -992,6 +999,17 @@ static struct mlx5_ib_mr *alloc_mr_from_cache(struct ib_pd *pd, MLX5_UMR_MTT_ALIGNMENT) #define MLX5_SPARE_UMR_CHUNK 0x10000 +static unsigned long mlx5_ib_get_xlt_emergency_page(void) +{ + mutex_lock(&xlt_emergency_page_mutex); + return xlt_emergency_page; +} + +static void mlx5_ib_put_xlt_emergency_page(void) +{ + mutex_unlock(&xlt_emergency_page_mutex); +} + int mlx5_ib_update_xlt(struct mlx5_ib_mr *mr, u64 idx, int npages, int page_shift, int flags) { |