diff options
author | Aharon Landau <aharonl@nvidia.com> | 2022-02-15 20:55:31 +0300 |
---|---|---|
committer | Jason Gunthorpe <jgg@nvidia.com> | 2022-02-23 21:59:13 +0300 |
commit | 56561ac6b27d489feb5d1e7e8b2a55a15063fcad (patch) | |
tree | 2339c32605555f558de47c0b3d6ed794f96272aa /drivers/infiniband/hw/mlx5 | |
parent | 2f0e60d5e9f96341a0c8a01be8878cdb3b29ff20 (diff) | |
download | linux-56561ac6b27d489feb5d1e7e8b2a55a15063fcad.tar.xz |
RDMA/mlx5: Merge similar flows of allocating MR from the cache
When allocating a MR from the cache, the driver calls to get_cache_mr(),
and in case of failure, retries with create_cache_mr(). This is the flow
of mlx5_mr_cache_alloc(), so use it instead.
Link: https://lore.kernel.org/r/53c85fcd4de6ec9de0b8e6cbb1bf5d5fe19900c3.1644947594.git.leonro@nvidia.com
Signed-off-by: Aharon Landau <aharonl@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx5')
-rw-r--r-- | drivers/infiniband/hw/mlx5/mlx5_ib.h | 3 | ||||
-rw-r--r-- | drivers/infiniband/hw/mlx5/mr.c | 47 | ||||
-rw-r--r-- | drivers/infiniband/hw/mlx5/odp.c | 11 |
3 files changed, 15 insertions, 46 deletions
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h index bacb6900b39f..751d02bc755b 100644 --- a/drivers/infiniband/hw/mlx5/mlx5_ib.h +++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h @@ -1343,7 +1343,8 @@ int mlx5_mr_cache_init(struct mlx5_ib_dev *dev); int mlx5_mr_cache_cleanup(struct mlx5_ib_dev *dev); struct mlx5_ib_mr *mlx5_mr_cache_alloc(struct mlx5_ib_dev *dev, - unsigned int entry, int access_flags); + struct mlx5_cache_ent *ent, + int access_flags); int mlx5_ib_check_mr_status(struct ib_mr *ibmr, u32 check_mask, struct ib_mr_status *mr_status); diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c index bce3cb6af524..0c1dc13b4c45 100644 --- a/drivers/infiniband/hw/mlx5/mr.c +++ b/drivers/infiniband/hw/mlx5/mr.c @@ -558,23 +558,16 @@ static void delayed_cache_work_func(struct work_struct *work) __cache_work_func(ent); } -/* Allocate a special entry from the cache */ struct mlx5_ib_mr *mlx5_mr_cache_alloc(struct mlx5_ib_dev *dev, - unsigned int entry, int access_flags) + struct mlx5_cache_ent *ent, + int access_flags) { - struct mlx5_mr_cache *cache = &dev->cache; - struct mlx5_cache_ent *ent; struct mlx5_ib_mr *mr; - if (WARN_ON(entry <= MR_CACHE_LAST_STD_ENTRY || - entry >= ARRAY_SIZE(cache->ent))) - return ERR_PTR(-EINVAL); - /* Matches access in alloc_cache_mr() */ if (!mlx5_ib_can_reconfig_with_umr(dev, 0, access_flags)) return ERR_PTR(-EOPNOTSUPP); - ent = &cache->ent[entry]; spin_lock_irq(&ent->lock); if (list_empty(&ent->head)) { queue_adjust_cache_locked(ent); @@ -592,32 +585,9 @@ struct mlx5_ib_mr *mlx5_mr_cache_alloc(struct mlx5_ib_dev *dev, mlx5_clear_mr(mr); } - mr->access_flags = access_flags; return mr; } -/* Return a MR already available in the cache */ -static struct mlx5_ib_mr *get_cache_mr(struct mlx5_cache_ent *req_ent) -{ - struct mlx5_ib_mr *mr = NULL; - struct mlx5_cache_ent *ent = req_ent; - - spin_lock_irq(&ent->lock); - if (!list_empty(&ent->head)) { - mr = list_first_entry(&ent->head, struct mlx5_ib_mr, list); - list_del(&mr->list); - ent->available_mrs--; - queue_adjust_cache_locked(ent); - spin_unlock_irq(&ent->lock); - mlx5_clear_mr(mr); - return mr; - } - queue_adjust_cache_locked(ent); - spin_unlock_irq(&ent->lock); - req_ent->miss++; - return NULL; -} - static void mlx5_mr_cache_free(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr) { struct mlx5_cache_ent *ent = mr->cache_ent; @@ -951,16 +921,9 @@ static struct mlx5_ib_mr *alloc_cacheable_mr(struct ib_pd *pd, return mr; } - mr = get_cache_mr(ent); - if (!mr) { - mr = create_cache_mr(ent); - /* - * The above already tried to do the same stuff as reg_create(), - * no reason to try it again. - */ - if (IS_ERR(mr)) - return mr; - } + mr = mlx5_mr_cache_alloc(dev, ent, access_flags); + if (IS_ERR(mr)) + return mr; mr->ibmr.pd = pd; mr->umem = umem; diff --git a/drivers/infiniband/hw/mlx5/odp.c b/drivers/infiniband/hw/mlx5/odp.c index 86842cd580ba..f834c9590c51 100644 --- a/drivers/infiniband/hw/mlx5/odp.c +++ b/drivers/infiniband/hw/mlx5/odp.c @@ -407,6 +407,7 @@ static void mlx5_ib_page_fault_resume(struct mlx5_ib_dev *dev, static struct mlx5_ib_mr *implicit_get_child_mr(struct mlx5_ib_mr *imr, unsigned long idx) { + struct mlx5_ib_dev *dev = mr_to_mdev(imr); struct ib_umem_odp *odp; struct mlx5_ib_mr *mr; struct mlx5_ib_mr *ret; @@ -418,13 +419,14 @@ static struct mlx5_ib_mr *implicit_get_child_mr(struct mlx5_ib_mr *imr, if (IS_ERR(odp)) return ERR_CAST(odp); - mr = mlx5_mr_cache_alloc( - mr_to_mdev(imr), MLX5_IMR_MTT_CACHE_ENTRY, imr->access_flags); + mr = mlx5_mr_cache_alloc(dev, &dev->cache.ent[MLX5_IMR_MTT_CACHE_ENTRY], + imr->access_flags); if (IS_ERR(mr)) { ib_umem_odp_release(odp); return mr; } + mr->access_flags = imr->access_flags; mr->ibmr.pd = imr->ibmr.pd; mr->ibmr.device = &mr_to_mdev(imr)->ib_dev; mr->umem = &odp->umem; @@ -493,12 +495,15 @@ struct mlx5_ib_mr *mlx5_ib_alloc_implicit_mr(struct mlx5_ib_pd *pd, if (IS_ERR(umem_odp)) return ERR_CAST(umem_odp); - imr = mlx5_mr_cache_alloc(dev, MLX5_IMR_KSM_CACHE_ENTRY, access_flags); + imr = mlx5_mr_cache_alloc(dev, + &dev->cache.ent[MLX5_IMR_KSM_CACHE_ENTRY], + access_flags); if (IS_ERR(imr)) { ib_umem_odp_release(umem_odp); return imr; } + imr->access_flags = access_flags; imr->ibmr.pd = &pd->ibpd; imr->ibmr.iova = 0; imr->umem = &umem_odp->umem; |