diff options
| author | Stefan Roscher <stefan.roscher at de.ibm.com> | 2007-07-20 18:04:17 +0400 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2007-07-21 08:19:47 +0400 |
| commit | e2f81daf23efde23d8cac1fc253d41838f0347cf (patch) | |
| tree | 310c493f007cc10625426118eaf217e50dd978f3 /drivers/infiniband/hw/ehca/ehca_cq.c | |
| parent | 0c10f7b79b5bb07a37aa5927072abdc3f45ac8d3 (diff) | |
| download | linux-e2f81daf23efde23d8cac1fc253d41838f0347cf.tar.xz | |
IB/ehca: Support small QP queues
eHCA2 supports QP queues that can be as small as 512 bytes. This
greatly reduces memory overhead for consumers that use lots of QPs
with small queues (e.g. RDMA-only QPs). Apart from dealing with
firmware, this code needs to manage bite-sized chunks of kernel pages,
making sure that no kernel page is shared between different protection
domains.
Signed-off-by: Hoang-Nam Nguyen <hnguyen@de.ibm.com>
Diffstat (limited to 'drivers/infiniband/hw/ehca/ehca_cq.c')
| -rw-r--r-- | drivers/infiniband/hw/ehca/ehca_cq.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/infiniband/hw/ehca/ehca_cq.c b/drivers/infiniband/hw/ehca/ehca_cq.c index 1e8ca3fca4aa..81aff36101ba 100644 --- a/drivers/infiniband/hw/ehca/ehca_cq.c +++ b/drivers/infiniband/hw/ehca/ehca_cq.c @@ -190,8 +190,8 @@ struct ib_cq *ehca_create_cq(struct ib_device *device, int cqe, int comp_vector, goto create_cq_exit2; } - ipz_rc = ipz_queue_ctor(&my_cq->ipz_queue, param.act_pages, - EHCA_PAGESIZE, sizeof(struct ehca_cqe), 0); + ipz_rc = ipz_queue_ctor(NULL, &my_cq->ipz_queue, param.act_pages, + EHCA_PAGESIZE, sizeof(struct ehca_cqe), 0, 0); if (!ipz_rc) { ehca_err(device, "ipz_queue_ctor() failed ipz_rc=%x device=%p", ipz_rc, device); @@ -285,7 +285,7 @@ struct ib_cq *ehca_create_cq(struct ib_device *device, int cqe, int comp_vector, return cq; create_cq_exit4: - ipz_queue_dtor(&my_cq->ipz_queue); + ipz_queue_dtor(NULL, &my_cq->ipz_queue); create_cq_exit3: h_ret = hipz_h_destroy_cq(adapter_handle, my_cq, 1); @@ -359,7 +359,7 @@ int ehca_destroy_cq(struct ib_cq *cq) "ehca_cq=%p cq_num=%x", h_ret, my_cq, cq_num); return ehca2ib_return_code(h_ret); } - ipz_queue_dtor(&my_cq->ipz_queue); + ipz_queue_dtor(NULL, &my_cq->ipz_queue); kmem_cache_free(cq_cache, my_cq); return 0; |