diff options
| author | Sebastian Sanchez <sebastian.sanchez@intel.com> | 2017-05-12 09:19:36 -0700 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2017-06-27 16:56:33 -0400 |
| commit | ceb26569af5bc33a8f47b755fd64f12c81801ce8 (patch) | |
| tree | 3ce21d8e0b6e1605ea32026ea265f3a51d169f2e /drivers/infiniband/hw/hfi1/user_sdma.c | |
| parent | 8c32c4f2f7ff91152e09ce57a1bcb75596a71933 (diff) | |
| download | linux-stable-ceb26569af5bc33a8f47b755fd64f12c81801ce8.tar.gz linux-stable-ceb26569af5bc33a8f47b755fd64f12c81801ce8.tar.bz2 linux-stable-ceb26569af5bc33a8f47b755fd64f12c81801ce8.zip | |
IB/hfi1: Remove unnecessary initialization from tx request
The tx request is unnecessarily initialized in the hot
code path with memset(), however, there's no need to do
this as most fields are initialized later on. this
initialization shows to be costly in the profile.
Remove unnecessary initialization from tx request and make
sure all variables are initialized properly.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Sebastian Sanchez <sebastian.sanchez@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/user_sdma.c')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/user_sdma.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/hfi1/user_sdma.c b/drivers/infiniband/hw/hfi1/user_sdma.c index d55339f5d73b..16fd519216dc 100644 --- a/drivers/infiniband/hw/hfi1/user_sdma.c +++ b/drivers/infiniband/hw/hfi1/user_sdma.c @@ -607,12 +607,19 @@ int hfi1_user_sdma_process_request(struct hfi1_filedata *fd, hfi1_cdbg(SDMA, "[%u:%u:%u] Using req/comp entry %u\n", dd->unit, uctxt->ctxt, fd->subctxt, info.comp_idx); req = pq->reqs + info.comp_idx; - memset(req, 0, sizeof(*req)); req->data_iovs = req_iovcnt(info.ctrl) - 1; /* subtract header vector */ + req->data_len = 0; req->pq = pq; req->cq = cq; req->status = -1; req->ahg_idx = -1; + req->iov_idx = 0; + req->sent = 0; + req->seqnum = 0; + req->seqcomp = 0; + req->seqsubmitted = 0; + req->flags = 0; + req->tids = NULL; INIT_LIST_HEAD(&req->txps); memcpy(&req->info, &info, sizeof(info)); @@ -701,12 +708,14 @@ int hfi1_user_sdma_process_request(struct hfi1_filedata *fd, /* Save all the IO vector structures */ for (i = 0; i < req->data_iovs; i++) { + req->iovs[i].offset = 0; INIT_LIST_HEAD(&req->iovs[i].list); memcpy(&req->iovs[i].iov, iovec + idx++, sizeof(req->iovs[i].iov)); ret = pin_vector_pages(req, &req->iovs[i]); if (ret) { + req->data_iovs = i; req->status = ret; goto free_req; } @@ -749,6 +758,7 @@ int hfi1_user_sdma_process_request(struct hfi1_filedata *fd, } req->tids = tmp; req->n_tids = ntids; + req->tididx = 0; idx++; } |