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| author | Stefan Roscher <ossrosch@linux.vnet.ibm.com> | 2008-05-07 11:35:06 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2008-05-07 11:35:06 -0700 |
| commit | 12137c593d127c6c1a3eb050674da047682badaf (patch) | |
| tree | f615c55e363b550c7489aa0aceeb8d62c201fcad /drivers/infiniband/hw/ehca/ehca_irq.c | |
| parent | ab69b3cf1219e0d07bb4ea373f36b1de38af531c (diff) | |
| download | linux-12137c593d127c6c1a3eb050674da047682badaf.tar.gz linux-12137c593d127c6c1a3eb050674da047682badaf.tar.bz2 linux-12137c593d127c6c1a3eb050674da047682badaf.zip | |
IB/ehca: Wait for async events to finish before destroying QP
This is necessary because, in a multicore environment, a race between
uverbs async handler and destroy QP could occur.
Signed-off-by: Stefan Roscher <stefan.roscher at de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/ehca/ehca_irq.c')
| -rw-r--r-- | drivers/infiniband/hw/ehca/ehca_irq.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/ehca/ehca_irq.c b/drivers/infiniband/hw/ehca/ehca_irq.c index ca5eb0cb628c..ce1ab0571be3 100644 --- a/drivers/infiniband/hw/ehca/ehca_irq.c +++ b/drivers/infiniband/hw/ehca/ehca_irq.c @@ -204,6 +204,8 @@ static void qp_event_callback(struct ehca_shca *shca, u64 eqe, read_lock(&ehca_qp_idr_lock); qp = idr_find(&ehca_qp_idr, token); + if (qp) + atomic_inc(&qp->nr_events); read_unlock(&ehca_qp_idr_lock); if (!qp) @@ -223,6 +225,8 @@ static void qp_event_callback(struct ehca_shca *shca, u64 eqe, if (fatal && qp->ext_type == EQPT_SRQBASE) dispatch_qp_event(shca, qp, IB_EVENT_QP_LAST_WQE_REACHED); + if (atomic_dec_and_test(&qp->nr_events)) + wake_up(&qp->wait_completion); return; } |