diff options
| author |   Mike Marciniszyn <mike.marciniszyn@intel.com> | 2019-06-14 12:33:00 -0400 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2019-06-17 21:15:40 -0400 |
| commit | 099a884ba4c00145cef283d36e050726311c2e95 (patch) | |
| tree | 4bfe2349a1dc2806e6db9d9d75155ba5b48907eb /drivers/infiniband | |
| parent | IB/hfi1: Wakeup QPs orphaned on wait list after flush (diff) | |
| download | linux-dev-099a884ba4c00145cef283d36e050726311c2e95.tar.xz linux-dev-099a884ba4c00145cef283d36e050726311c2e95.zip | |
IB/hfi1: Handle wakeup of orphaned QPs for pio
Once a send context is taken down due to a link failure, any QPs waiting
for pio credits will stay on the waitlist indefinitely.
Fix by wakeing up all QPs linked to piowait list.
Fixes: 7724105686e7 ("IB/hfi1: add driver files")
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/pio.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hfi1/pio.c b/drivers/infiniband/hw/hfi1/pio.c index 16ba9d52e1b9..66cf2b17e519 100644 --- a/drivers/infiniband/hw/hfi1/pio.c +++ b/drivers/infiniband/hw/hfi1/pio.c @@ -952,6 +952,22 @@ void sc_disable(struct send_context *sc) } } spin_unlock(&sc->release_lock); + + write_seqlock(&sc->waitlock); + while (!list_empty(&sc->piowait)) { + struct iowait *wait; + struct rvt_qp *qp; + struct hfi1_qp_priv *priv; + + wait = list_first_entry(&sc->piowait, struct iowait, list); + qp = iowait_to_qp(wait); + priv = qp->priv; + list_del_init(&priv->s_iowait.list); + priv->s_iowait.lock = NULL; + hfi1_qp_wakeup(qp, RVT_S_WAIT_PIO | HFI1_S_WAIT_PIO_DRAIN); + } + write_sequnlock(&sc->waitlock); + spin_unlock_irq(&sc->alloc_lock); } |