diff options
| author | Michael J. Ruhl <michael.j.ruhl@intel.com> | 2017-08-22 04:26:45 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2017-08-29 02:12:18 +0300 |
| commit | 7956371ea48bd00956219a82fd3af655dd216073 (patch) | |
| tree | 7279bc238b80cb372f3d6adf3b1d2cc09247d5b4 /drivers/infiniband/hw/hfi1/verbs_txreq.c | |
| parent | de42de80d7bb4f82e30d16f5c64da90e64b6c644 (diff) | |
| download | linux-7956371ea48bd00956219a82fd3af655dd216073.tar.xz | |
IB/hfi1: Improve local kmem_cache_alloc performance
Performance analysis shows that the cache callback function
sdma_kmem_cache_ctor contributes to 1/2 of the kmem_cache_allocs
time.
Since all of the fields in the allocated data structure are initialized
in the code path, remove the _ctor function.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/hfi1/verbs_txreq.c')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/verbs_txreq.c | 11 |
1 files changed, 2 insertions, 9 deletions
diff --git a/drivers/infiniband/hw/hfi1/verbs_txreq.c b/drivers/infiniband/hw/hfi1/verbs_txreq.c index 5d23172c470f..873e48ea923f 100644 --- a/drivers/infiniband/hw/hfi1/verbs_txreq.c +++ b/drivers/infiniband/hw/hfi1/verbs_txreq.c @@ -1,5 +1,5 @@ /* - * Copyright(c) 2016 Intel Corporation. + * Copyright(c) 2016 - 2017 Intel Corporation. * * This file is provided under a dual BSD/GPLv2 license. When using or * redistributing this file, you may do so under either license. @@ -119,13 +119,6 @@ out: return tx; } -static void verbs_txreq_kmem_cache_ctor(void *obj) -{ - struct verbs_txreq *tx = (struct verbs_txreq *)obj; - - memset(tx, 0, sizeof(*tx)); -} - int verbs_txreq_init(struct hfi1_ibdev *dev) { char buf[TXREQ_LEN]; @@ -135,7 +128,7 @@ int verbs_txreq_init(struct hfi1_ibdev *dev) dev->verbs_txreq_cache = kmem_cache_create(buf, sizeof(struct verbs_txreq), 0, SLAB_HWCACHE_ALIGN, - verbs_txreq_kmem_cache_ctor); + NULL); if (!dev->verbs_txreq_cache) return -ENOMEM; return 0; |