diff options
Diffstat (limited to 'drivers/infiniband/hw/hfi1/sdma.c')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/sdma.c | 26 |
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: |