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| author | Wengang Wang <wen.gang.wang@oracle.com> | 2015-10-08 07:27:04 +0200 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2015-12-08 22:48:10 +0100 |
| commit | 0ef2f05c7e02ff99c0b5b583d7dee2cd12b053f2 (patch) | |
| tree | c5305adcf047948e7eb5d368b951c47940a1869c /drivers/infiniband/hw/mlx4/srq.c | |
| parent | IB/mlx4: Use correct order of variables in log message (diff) | |
| download | linux-0ef2f05c7e02ff99c0b5b583d7dee2cd12b053f2.tar.xz linux-0ef2f05c7e02ff99c0b5b583d7dee2cd12b053f2.zip | |
IB/mlx4: Use vmalloc for WR buffers when needed
There are several hits that WR buffer allocation(kmalloc) failed.
It failed at order 3 and/or 4 contigous pages allocation. At the same time
there are actually 100MB+ free memory but well fragmented.
So try vmalloc when kmalloc failed.
Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com>
Acked-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx4/srq.c')
| -rw-r--r-- | drivers/infiniband/hw/mlx4/srq.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/mlx4/srq.c b/drivers/infiniband/hw/mlx4/srq.c index dce5dfe3a70e..8d133c40fa0e 100644 --- a/drivers/infiniband/hw/mlx4/srq.c +++ b/drivers/infiniband/hw/mlx4/srq.c @@ -34,6 +34,7 @@ #include <linux/mlx4/qp.h> #include <linux/mlx4/srq.h> #include <linux/slab.h> +#include <linux/vmalloc.h> #include "mlx4_ib.h" #include "user.h" @@ -172,8 +173,12 @@ struct ib_srq *mlx4_ib_create_srq(struct ib_pd *pd, srq->wrid = kmalloc(srq->msrq.max * sizeof (u64), GFP_KERNEL); if (!srq->wrid) { - err = -ENOMEM; - goto err_mtt; + srq->wrid = __vmalloc(srq->msrq.max * sizeof(u64), + GFP_KERNEL, PAGE_KERNEL); + if (!srq->wrid) { + err = -ENOMEM; + goto err_mtt; + } } } @@ -204,7 +209,7 @@ err_wrid: if (pd->uobject) mlx4_ib_db_unmap_user(to_mucontext(pd->uobject->context), &srq->db); else - kfree(srq->wrid); + kvfree(srq->wrid); err_mtt: mlx4_mtt_cleanup(dev->dev, &srq->mtt); |