diff options
| author |   Mike Marciniszyn <mike.marciniszyn@intel.com> | 2015-11-09 19:13:58 -0500 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-11-19 16:55:37 -0800 |
| commit | 0a226edd203f1209e4ee6e07a6b41a9cfd8beeb8 (patch) | |
| tree | 61ec5424ebca8146ea7e832761fefc875c1f6f76 /drivers/staging/rdma/hfi1/init.c | |
| parent | staging/rdma/hfi1: move hfi1_migrate_qp (diff) | |
| download | linux-dev-0a226edd203f1209e4ee6e07a6b41a9cfd8beeb8.tar.xz linux-dev-0a226edd203f1209e4ee6e07a6b41a9cfd8beeb8.zip | |
staging/rdma/hfi1: Use parallel workqueue for SDMA engines
The workqueue is currently single threaded per port which for a small number of
SDMA engines is ok.
For hfi1, the there are up to 16 SDMA engines that can be fed descriptors in
parallel.
Use alloc_workqueue with a workqueue limit of the number of sdma engines and
with WQ_CPU_INTENSIVE and WQ_HIGHPRI specified.
Then change send to use the new scheduler which no longer needs to get the
s_lock
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/rdma/hfi1/init.c')
| -rw-r--r-- | drivers/staging/rdma/hfi1/init.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/staging/rdma/hfi1/init.c b/drivers/staging/rdma/hfi1/init.c index 4a7974442154..635996742480 100644 --- a/drivers/staging/rdma/hfi1/init.c +++ b/drivers/staging/rdma/hfi1/init.c @@ -603,20 +603,19 @@ static int create_workqueues(struct hfi1_devdata *dd) for (pidx = 0; pidx < dd->num_pports; ++pidx) { ppd = dd->pport + pidx; if (!ppd->hfi1_wq) { - char wq_name[8]; /* 3 + 2 + 1 + 1 + 1 */ - - snprintf(wq_name, sizeof(wq_name), "hfi%d_%d", - dd->unit, pidx); ppd->hfi1_wq = - create_singlethread_workqueue(wq_name); + alloc_workqueue( + "hfi%d_%d", + WQ_SYSFS | WQ_HIGHPRI | WQ_CPU_INTENSIVE, + dd->num_sdma, + dd->unit, pidx); if (!ppd->hfi1_wq) goto wq_error; } } return 0; wq_error: - pr_err("create_singlethread_workqueue failed for port %d\n", - pidx + 1); + pr_err("alloc_workqueue failed for port %d\n", pidx + 1); for (pidx = 0; pidx < dd->num_pports; ++pidx) { ppd = dd->pport + pidx; if (ppd->hfi1_wq) { |