diff options
| author |   Shay Drory <shayd@mellanox.com> | 2020-06-21 13:47:36 +0300 |
|---|---|---|
| committer |   Jason Gunthorpe <jgg@nvidia.com> | 2020-06-24 16:43:44 -0300 |
| commit | b9af0e2d5aeab77bef33bd3df073c3c96b69ec79 (patch) | |
| tree | bcea9450fcd3a3b1e026a0fb3984a87ee27b441c /drivers/infiniband/core/mad.c | |
| parent | RDMA/ipoib: Return void from ipoib_ib_dev_stop() (diff) | |
| download | linux-dev-b9af0e2d5aeab77bef33bd3df073c3c96b69ec79.tar.xz linux-dev-b9af0e2d5aeab77bef33bd3df073c3c96b69ec79.zip | |
IB/mad: Issue complete whenever decrements agent refcount
Replace calls of atomic_dec() to mad_agent_priv->refcount with calls to
deref_mad_agent() in order to issue complete. Most likely the refcount is
> 1 at these points, but it is difficult to prove. Performance is not
important on these paths, so be obviously correct.
Link: https://lore.kernel.org/r/20200621104738.54850-3-leon@kernel.org
Signed-off-by: Shay Drory <shayd@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/core/mad.c')
| -rw-r--r-- | drivers/infiniband/core/mad.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c index 186e0d652e8b..1135f2a5231a 100644 --- a/drivers/infiniband/core/mad.c +++ b/drivers/infiniband/core/mad.c @@ -1148,7 +1148,7 @@ int ib_post_send_mad(struct ib_mad_send_buf *send_buf, spin_lock_irqsave(&mad_agent_priv->lock, flags); list_del(&mad_send_wr->agent_list); spin_unlock_irqrestore(&mad_agent_priv->lock, flags); - atomic_dec(&mad_agent_priv->refcount); + deref_mad_agent(mad_agent_priv); goto error; } } @@ -1831,7 +1831,7 @@ static void ib_mad_complete_recv(struct ib_mad_agent_private *mad_agent_priv, mad_agent_priv->agent.recv_handler( &mad_agent_priv->agent, NULL, mad_recv_wc); - atomic_dec(&mad_agent_priv->refcount); + deref_mad_agent(mad_agent_priv); } else { /* not user rmpp, revert to normal behavior and * drop the mad */ @@ -1848,7 +1848,7 @@ static void ib_mad_complete_recv(struct ib_mad_agent_private *mad_agent_priv, &mad_agent_priv->agent, &mad_send_wr->send_buf, mad_recv_wc); - atomic_dec(&mad_agent_priv->refcount); + deref_mad_agent(mad_agent_priv); mad_send_wc.status = IB_WC_SUCCESS; mad_send_wc.vendor_err = 0; @@ -2438,7 +2438,7 @@ static void cancel_mads(struct ib_mad_agent_private *mad_agent_priv) list_del(&mad_send_wr->agent_list); mad_agent_priv->agent.send_handler(&mad_agent_priv->agent, &mad_send_wc); - atomic_dec(&mad_agent_priv->refcount); + deref_mad_agent(mad_agent_priv); } } @@ -2572,7 +2572,7 @@ static void local_completions(struct work_struct *work) &local->mad_send_wr->send_buf, &local->mad_priv->header.recv_wc); spin_lock_irqsave(&recv_mad_agent->lock, flags); - atomic_dec(&recv_mad_agent->refcount); + deref_mad_agent(recv_mad_agent); spin_unlock_irqrestore(&recv_mad_agent->lock, flags); } @@ -2585,7 +2585,7 @@ local_send_completion: &mad_send_wc); spin_lock_irqsave(&mad_agent_priv->lock, flags); - atomic_dec(&mad_agent_priv->refcount); + deref_mad_agent(mad_agent_priv); if (free_mad) kfree(local->mad_priv); kfree(local); @@ -2671,7 +2671,7 @@ static void timeout_sends(struct work_struct *work) mad_agent_priv->agent.send_handler(&mad_agent_priv->agent, &mad_send_wc); - atomic_dec(&mad_agent_priv->refcount); + deref_mad_agent(mad_agent_priv); spin_lock_irqsave(&mad_agent_priv->lock, flags); } spin_unlock_irqrestore(&mad_agent_priv->lock, flags); |