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| author | Mike Marciniszyn <mike.marciniszyn@intel.com> | 2019-06-14 19:33:00 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-07-14 09:09:44 +0300 |
| commit | d19a1a9c4083e2b9015e7a1a151e9661ba5c47d5 (patch) | |
| tree | ab4bfcb7f3206c7b3f915390decb031c870a3966 /drivers/infiniband | |
| parent | c7a79b35dd816c47745c021953cdc92c78c1d6b8 (diff) | |
| download | linux-d19a1a9c4083e2b9015e7a1a151e9661ba5c47d5.tar.xz | |
IB/hfi1: Handle wakeup of orphaned QPs for pio
[ Upstream commit 099a884ba4c00145cef283d36e050726311c2e95 ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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 a1de566fe95e..1ee47838d4de 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); } |