diff options
| author | Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com> | 2021-03-29 16:54:07 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2021-04-08 02:19:00 +0300 |
| commit | 4bd00b55c978017aad10f0ff3e45525cd62cca07 (patch) | |
| tree | 4bafe9c4d0c44791a93540faedf4301244df447e /drivers/infiniband/hw/hfi1/ipoib_tx.c | |
| parent | 704d68f5f2df46f7195a62bc21014e71a7f67a99 (diff) | |
| download | linux-4bd00b55c978017aad10f0ff3e45525cd62cca07.tar.xz | |
IB/hfi1: Add AIP tx traces
Add traces to allow for debugging issues with AIP tx.
Link: https://lore.kernel.org/r/1617026056-50483-2-git-send-email-dennis.dalessandro@cornelisnetworks.com
Reviewed-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/hw/hfi1/ipoib_tx.c')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/ipoib_tx.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/hfi1/ipoib_tx.c b/drivers/infiniband/hw/hfi1/ipoib_tx.c index edd4eeac8dd1..5129dc95dec9 100644 --- a/drivers/infiniband/hw/hfi1/ipoib_tx.c +++ b/drivers/infiniband/hw/hfi1/ipoib_tx.c @@ -15,6 +15,7 @@ #include "verbs.h" #include "trace_ibhdrs.h" #include "ipoib.h" +#include "trace_tx.h" /* Add a convenience helper */ #define CIRC_ADD(val, add, size) (((val) + (add)) & ((size) - 1)) @@ -63,12 +64,14 @@ static u64 hfi1_ipoib_used(struct hfi1_ipoib_txq *txq) static void hfi1_ipoib_stop_txq(struct hfi1_ipoib_txq *txq) { + trace_hfi1_txq_stop(txq); if (atomic_inc_return(&txq->stops) == 1) netif_stop_subqueue(txq->priv->netdev, txq->q_idx); } static void hfi1_ipoib_wake_txq(struct hfi1_ipoib_txq *txq) { + trace_hfi1_txq_wake(txq); if (atomic_dec_and_test(&txq->stops)) netif_wake_subqueue(txq->priv->netdev, txq->q_idx); } @@ -89,8 +92,10 @@ static void hfi1_ipoib_check_queue_depth(struct hfi1_ipoib_txq *txq) { ++txq->sent_txreqs; if (hfi1_ipoib_used(txq) >= hfi1_ipoib_ring_hwat(txq) && - !atomic_xchg(&txq->ring_full, 1)) + !atomic_xchg(&txq->ring_full, 1)) { + trace_hfi1_txq_full(txq); hfi1_ipoib_stop_txq(txq); + } } static void hfi1_ipoib_check_queue_stopped(struct hfi1_ipoib_txq *txq) @@ -112,8 +117,10 @@ static void hfi1_ipoib_check_queue_stopped(struct hfi1_ipoib_txq *txq) * to protect against ring overflow. */ if (hfi1_ipoib_used(txq) < hfi1_ipoib_ring_lwat(txq) && - atomic_xchg(&txq->ring_full, 0)) + atomic_xchg(&txq->ring_full, 0)) { + trace_hfi1_txq_xmit_unstopped(txq); hfi1_ipoib_wake_txq(txq); + } } static void hfi1_ipoib_free_tx(struct ipoib_txreq *tx, int budget) @@ -405,6 +412,7 @@ static struct ipoib_txreq *hfi1_ipoib_send_dma_common(struct net_device *dev, sdma_select_engine_sc(priv->dd, txp->flow.tx_queue, txp->flow.sc5); + trace_hfi1_flow_switch(txp->txq); } return tx; @@ -525,6 +533,7 @@ static int hfi1_ipoib_send_dma_list(struct net_device *dev, if (txq->flow.as_int != txp->flow.as_int) { int ret; + trace_hfi1_flow_flush(txq); ret = hfi1_ipoib_flush_tx_list(dev, txq); if (unlikely(ret)) { if (ret == -EBUSY) @@ -635,8 +644,10 @@ static int hfi1_ipoib_sdma_sleep(struct sdma_engine *sde, /* came from non-list submit */ list_add_tail(&txreq->list, &txq->tx_list); if (list_empty(&txq->wait.list)) { - if (!atomic_xchg(&txq->no_desc, 1)) + if (!atomic_xchg(&txq->no_desc, 1)) { + trace_hfi1_txq_queued(txq); hfi1_ipoib_stop_txq(txq); + } iowait_queue(pkts_sent, wait->iow, &sde->dmawait); } @@ -659,6 +670,7 @@ static void hfi1_ipoib_sdma_wakeup(struct iowait *wait, int reason) struct hfi1_ipoib_txq *txq = container_of(wait, struct hfi1_ipoib_txq, wait); + trace_hfi1_txq_wakeup(txq); if (likely(txq->priv->netdev->reg_state == NETREG_REGISTERED)) iowait_schedule(wait, system_highpri_wq, WORK_CPU_UNBOUND); } |