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path: root/drivers/infiniband/hw/hfi1/sdma.c
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Diffstat (limited to 'drivers/infiniband/hw/hfi1/sdma.c')
-rw-r--r--drivers/infiniband/hw/hfi1/sdma.c26
1 files changed, 20 insertions, 6 deletions
diff --git a/drivers/infiniband/hw/hfi1/sdma.c b/drivers/infiniband/hw/hfi1/sdma.c
index b0110728f541..28b66bd70b74 100644
--- a/drivers/infiniband/hw/hfi1/sdma.c
+++ b/drivers/infiniband/hw/hfi1/sdma.c
@@ -405,19 +405,33 @@ static void sdma_flush(struct sdma_engine *sde)
struct sdma_txreq *txp, *txp_next;
LIST_HEAD(flushlist);
unsigned long flags;
+ uint seq;
/* flush from head to tail */
sdma_flush_descq(sde);
spin_lock_irqsave(&sde->flushlist_lock, flags);
/* copy flush list */
- list_for_each_entry_safe(txp, txp_next, &sde->flushlist, list) {
- list_del_init(&txp->list);
- list_add_tail(&txp->list, &flushlist);
- }
+ list_splice_init(&sde->flushlist, &flushlist);
spin_unlock_irqrestore(&sde->flushlist_lock, flags);
/* flush from flush list */
list_for_each_entry_safe(txp, txp_next, &flushlist, list)
complete_tx(sde, txp, SDMA_TXREQ_S_ABORTED);
+ /* wakeup QPs orphaned on the dmawait list */
+ do {
+ struct iowait *w, *nw;
+
+ seq = read_seqbegin(&sde->waitlock);
+ if (!list_empty(&sde->dmawait)) {
+ write_seqlock(&sde->waitlock);
+ list_for_each_entry_safe(w, nw, &sde->dmawait, list) {
+ if (w->wakeup) {
+ w->wakeup(w, SDMA_AVAIL_REASON);
+ list_del_init(&w->list);
+ }
+ }
+ write_sequnlock(&sde->waitlock);
+ }
+ } while (read_seqretry(&sde->waitlock, seq));
}
/*
@@ -2413,7 +2427,7 @@ unlock_noconn:
list_add_tail(&tx->list, &sde->flushlist);
spin_unlock(&sde->flushlist_lock);
iowait_inc_wait_count(wait, tx->num_desc);
- schedule_work(&sde->flush_worker);
+ queue_work_on(sde->cpu, system_highpri_wq, &sde->flush_worker);
ret = -ECOMM;
goto unlock;
nodesc:
@@ -2511,7 +2525,7 @@ unlock_noconn:
iowait_inc_wait_count(wait, tx->num_desc);
}
spin_unlock(&sde->flushlist_lock);
- schedule_work(&sde->flush_worker);
+ queue_work_on(sde->cpu, system_highpri_wq, &sde->flush_worker);
ret = -ECOMM;
goto update_tail;
nodesc: