diff options
| author | Harish Chegondi <harish.chegondi@intel.com> | 2016-02-14 12:10:12 -0800 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-03-10 20:38:08 -0500 |
| commit | e16689e49216d08336da2d96cbc8c4b6b914dc99 (patch) | |
| tree | 4ac07a756d70fa0b1a31dcd0e435b550bb06d767 /drivers/infiniband/sw/rdmavt/qp.c | |
| parent | 46a80d62e6e0ccfc9d8a05c5b773405b84a4afd7 (diff) | |
IB/rdmavt: Add trace and error print statements in post_one_wr
These trace and error print statements would help in debugging issues which
are caused due to messed up QP ring buffer pointers.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Harish Chegondi <harish.chegondi@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/sw/rdmavt/qp.c')
| -rw-r--r-- | drivers/infiniband/sw/rdmavt/qp.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/infiniband/sw/rdmavt/qp.c b/drivers/infiniband/sw/rdmavt/qp.c index 522404ac7c38..d629911ab0ab 100644 --- a/drivers/infiniband/sw/rdmavt/qp.c +++ b/drivers/infiniband/sw/rdmavt/qp.c @@ -1441,7 +1441,12 @@ static int rvt_post_one_wr(struct rvt_qp *qp, struct ib_send_wr *wr) /* check for avail */ if (unlikely(!qp->s_avail)) { qp->s_avail = qp_get_savail(qp); - WARN_ON(qp->s_avail > (qp->s_size - 1)); + if (WARN_ON(qp->s_avail > (qp->s_size - 1))) + rvt_pr_err(rdi, + "More avail entries than QP RB size.\nQP: %u, size: %u, avail: %u\nhead: %u, tail: %u, cur: %u, acked: %u, last: %u", + qp->ibqp.qp_num, qp->s_size, qp->s_avail, + qp->s_head, qp->s_tail, qp->s_cur, + qp->s_acked, qp->s_last); if (!qp->s_avail) return -ENOMEM; } @@ -1510,6 +1515,7 @@ static int rvt_post_one_wr(struct rvt_qp *qp, struct ib_send_wr *wr) wqe->lpsn = wqe->psn + (wqe->length ? ((wqe->length - 1) >> log_pmtu) : 0); qp->s_next_psn = wqe->lpsn + 1; + trace_rvt_post_one_wr(qp, wqe); smp_wmb(); /* see request builders */ qp->s_avail--; qp->s_head = next; |