diff options
Diffstat (limited to 'drivers/infiniband/hw/hfi1/init.c')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/init.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/infiniband/hw/hfi1/init.c b/drivers/infiniband/hw/hfi1/init.c index ee5cbdfeb3ab..27e7de4c4a34 100644 --- a/drivers/infiniband/hw/hfi1/init.c +++ b/drivers/infiniband/hw/hfi1/init.c @@ -215,12 +215,12 @@ static void hfi1_rcd_free(struct kref *kref) struct hfi1_ctxtdata *rcd = container_of(kref, struct hfi1_ctxtdata, kref); - hfi1_free_ctxtdata(rcd->dd, rcd); - spin_lock_irqsave(&rcd->dd->uctxt_lock, flags); rcd->dd->rcd[rcd->ctxt] = NULL; spin_unlock_irqrestore(&rcd->dd->uctxt_lock, flags); + hfi1_free_ctxtdata(rcd->dd, rcd); + kfree(rcd); } @@ -243,10 +243,13 @@ int hfi1_rcd_put(struct hfi1_ctxtdata *rcd) * @rcd: pointer to an initialized rcd data structure * * Use this to get a reference after the init. + * + * Return : reflect kref_get_unless_zero(), which returns non-zero on + * increment, otherwise 0. */ -void hfi1_rcd_get(struct hfi1_ctxtdata *rcd) +int hfi1_rcd_get(struct hfi1_ctxtdata *rcd) { - kref_get(&rcd->kref); + return kref_get_unless_zero(&rcd->kref); } /** @@ -305,7 +308,8 @@ struct hfi1_ctxtdata *hfi1_rcd_get_by_index(struct hfi1_devdata *dd, u16 ctxt) spin_lock_irqsave(&dd->uctxt_lock, flags); if (dd->rcd[ctxt]) { rcd = dd->rcd[ctxt]; - hfi1_rcd_get(rcd); + if (!hfi1_rcd_get(rcd)) + rcd = NULL; } spin_unlock_irqrestore(&dd->uctxt_lock, flags); @@ -765,7 +769,8 @@ static int create_workqueues(struct hfi1_devdata *dd) ppd->hfi1_wq = alloc_workqueue( "hfi%d_%d", - WQ_SYSFS | WQ_HIGHPRI | WQ_CPU_INTENSIVE, + WQ_SYSFS | WQ_HIGHPRI | WQ_CPU_INTENSIVE | + WQ_MEM_RECLAIM, HFI1_MAX_ACTIVE_WORKQUEUE_ENTRIES, dd->unit, pidx); if (!ppd->hfi1_wq) |