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IB/{rdmavt, hfi1, qib}: Add a counter for credit waits

Telusuri Sumber 
This patch adds a counter for credit waits to assist field debugging.

Link: https://lore.kernel.org/r/20190911113047.126040.10857.stgit@awfm-01.aw.intel.com
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Kaike Wan
2019-09-11 07:30:47 -04:00
committed by Jason Gunthorpe
orang tua c05fc15634
melakukan 7199435414
7 mengubah file dengan 45 tambahan dan 16 penghapusan
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10
drivers/infiniband/hw/qib/qib_rc.c
Melihat File

@@ -313,11 +313,8 @@ int qib_make_rc_req(struct rvt_qp *qp, unsigned long *flags)
case IB_WR_SEND:
case IB_WR_SEND_WITH_IMM:
/* If no credit, return. */
if (!(qp->s_flags & RVT_S_UNLIMITED_CREDIT) &&
rvt_cmp_msn(wqe->ssn, qp->s_lsn + 1) > 0) {
qp->s_flags |= RVT_S_WAIT_SSN_CREDIT;
if (!rvt_rc_credit_avail(qp, wqe))
goto bail;
}
if (len > pmtu) {
qp->s_state = OP(SEND_FIRST);
len = pmtu;
@@ -344,11 +341,8 @@ int qib_make_rc_req(struct rvt_qp *qp, unsigned long *flags)
goto no_flow_control;
case IB_WR_RDMA_WRITE_WITH_IMM:
/* If no credit, return. */
if (!(qp->s_flags & RVT_S_UNLIMITED_CREDIT) &&
rvt_cmp_msn(wqe->ssn, qp->s_lsn + 1) > 0) {
qp->s_flags |= RVT_S_WAIT_SSN_CREDIT;
if (!rvt_rc_credit_avail(qp, wqe))
goto bail;
}
no_flow_control:
ohdr->u.rc.reth.vaddr =
cpu_to_be64(wqe->rdma_wr.remote_addr);