diff options
author | Paolo Bonzini <pbonzini@redhat.com> | 2019-07-11 15:14:16 +0200 |
---|---|---|
committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-07-11 15:14:16 +0200 |
commit | a45ff5994c9cde41af627c46abb9f32beae68943 (patch) | |
tree | b726cc506ed1b01484f183ab2679cdd618e1e9b1 /drivers/infiniband/hw/hfi1/user_sdma.c | |
parent | Documentation: virtual: Add toctree hooks (diff) | |
parent | KVM: arm/arm64: Initialise host's MPIDRs by reading the actual register (diff) | |
download | linux-dev-a45ff5994c9cde41af627c46abb9f32beae68943.tar.xz linux-dev-a45ff5994c9cde41af627c46abb9f32beae68943.zip |
Merge tag 'kvm-arm-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm updates for 5.3
- Add support for chained PMU counters in guests
- Improve SError handling
- Handle Neoverse N1 erratum #1349291
- Allow side-channel mitigation status to be migrated
- Standardise most AArch64 system register accesses to msr_s/mrs_s
- Fix host MPIDR corruption on 32bit
Diffstat (limited to 'drivers/infiniband/hw/hfi1/user_sdma.c')
-rw-r--r-- | drivers/infiniband/hw/hfi1/user_sdma.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/infiniband/hw/hfi1/user_sdma.c b/drivers/infiniband/hw/hfi1/user_sdma.c index 8bfbc6d7ea34..fd754a16475a 100644 --- a/drivers/infiniband/hw/hfi1/user_sdma.c +++ b/drivers/infiniband/hw/hfi1/user_sdma.c @@ -130,20 +130,16 @@ static int defer_packet_queue( { struct hfi1_user_sdma_pkt_q *pq = container_of(wait->iow, struct hfi1_user_sdma_pkt_q, busy); - struct user_sdma_txreq *tx = - container_of(txreq, struct user_sdma_txreq, txreq); - if (sdma_progress(sde, seq, txreq)) { - if (tx->busycount++ < MAX_DEFER_RETRY_COUNT) - goto eagain; - } + write_seqlock(&sde->waitlock); + if (sdma_progress(sde, seq, txreq)) + goto eagain; /* * We are assuming that if the list is enqueued somewhere, it * is to the dmawait list since that is the only place where * it is supposed to be enqueued. */ xchg(&pq->state, SDMA_PKT_Q_DEFERRED); - write_seqlock(&sde->waitlock); if (list_empty(&pq->busy.list)) { iowait_get_priority(&pq->busy); iowait_queue(pkts_sent, &pq->busy, &sde->dmawait); @@ -151,6 +147,7 @@ static int defer_packet_queue( write_sequnlock(&sde->waitlock); return -EBUSY; eagain: + write_sequnlock(&sde->waitlock); return -EAGAIN; } @@ -804,7 +801,6 @@ static int user_sdma_send_pkts(struct user_sdma_request *req, u16 maxpkts) tx->flags = 0; tx->req = req; - tx->busycount = 0; INIT_LIST_HEAD(&tx->list); /* |