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

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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
committad av Jason Gunthorpe
förälder c05fc15634
incheckning 7199435414
7 ändrade filer med 45 tillägg och 16 borttagningar
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2
drivers/infiniband/hw/hfi1/chip.c
Visa fil

@@ -4101,6 +4101,7 @@ def_access_ibp_counter(rc_dupreq);
def_access_ibp_counter(rdma_seq);
def_access_ibp_counter(unaligned);
def_access_ibp_counter(seq_naks);
def_access_ibp_counter(rc_crwaits);
static struct cntr_entry dev_cntrs[DEV_CNTR_LAST] = {
[C_RCV_OVF] = RXE32_DEV_CNTR_ELEM(RcvOverflow, RCV_BUF_OVFL_CNT, CNTR_SYNTH),
@@ -5119,6 +5120,7 @@ static struct cntr_entry port_cntrs[PORT_CNTR_LAST] = {
[C_SW_IBP_RDMA_SEQ] = SW_IBP_CNTR(RdmaSeq, rdma_seq),
[C_SW_IBP_UNALIGNED] = SW_IBP_CNTR(Unaligned, unaligned),
[C_SW_IBP_SEQ_NAK] = SW_IBP_CNTR(SeqNak, seq_naks),
[C_SW_IBP_RC_CRWAITS] = SW_IBP_CNTR(RcCrWait, rc_crwaits),
[C_SW_CPU_RC_ACKS] = CNTR_ELEM("RcAcks", 0, 0, CNTR_NORMAL,
access_sw_cpu_rc_acks),
[C_SW_CPU_RC_QACKS] = CNTR_ELEM("RcQacks", 0, 0, CNTR_NORMAL,

1
drivers/infiniband/hw/hfi1/chip.h
Visa fil

@@ -1245,6 +1245,7 @@ enum {
C_SW_IBP_RDMA_SEQ,
C_SW_IBP_UNALIGNED,
C_SW_IBP_SEQ_NAK,
C_SW_IBP_RC_CRWAITS,
C_SW_CPU_RC_ACKS,
C_SW_CPU_RC_QACKS,
C_SW_CPU_RC_DELAYED_COMP,

10
drivers/infiniband/hw/hfi1/rc.c
Visa fil

@@ -595,11 +595,8 @@ check_s_state:
case IB_WR_SEND_WITH_IMM:
case IB_WR_SEND_WITH_INV:
/* 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;
@@ -632,11 +629,8 @@ check_s_state:
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:
put_ib_reth_vaddr(
wqe->rdma_wr.remote_addr,