diff options
| author | Mike Marciniszyn <mike.marciniszyn@intel.com> | 2013-06-04 15:05:37 -0400 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2013-06-21 17:19:49 -0700 |
| commit | 85caafe307a06e4f9993c8f3c994a07374c07831 (patch) | |
| tree | c17964cc02d75f2bb6f827eed9daeec719b85d17 /drivers/infiniband/hw/qib/qib.h | |
| parent | c804f07248895ff9c9dccb6cda703068a0657b6c (diff) | |
IB/qib: Optimize CQ callbacks
The current workqueue implemention has the following performance
deficiencies on QDR HCAs:
- The CQ call backs tend to run on the CPUs processing the
receive queues
- The single thread queue isn't optimal for multiple HCAs
This patch adds a dedicated per HCA bound thread to process CQ callbacks.
Reviewed-by: Ramkrishna Vepa <ramkrishna.vepa@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband/hw/qib/qib.h')
| -rw-r--r-- | drivers/infiniband/hw/qib/qib.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/qib/qib.h b/drivers/infiniband/hw/qib/qib.h index 2ee82e6550c7..3a78b92cbd4e 100644 --- a/drivers/infiniband/hw/qib/qib.h +++ b/drivers/infiniband/hw/qib/qib.h @@ -1,7 +1,7 @@ #ifndef _QIB_KERNEL_H #define _QIB_KERNEL_H /* - * Copyright (c) 2012 Intel Corporation. All rights reserved. + * Copyright (c) 2012, 2013 Intel Corporation. All rights reserved. * Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved. * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. * @@ -51,6 +51,7 @@ #include <linux/completion.h> #include <linux/kref.h> #include <linux/sched.h> +#include <linux/kthread.h> #include "qib_common.h" #include "qib_verbs.h" @@ -1090,6 +1091,8 @@ struct qib_devdata { u16 psxmitwait_check_rate; /* high volume overflow errors defered to tasklet */ struct tasklet_struct error_tasklet; + /* per device cq worker */ + struct kthread_worker *worker; int assigned_node_id; /* NUMA node closest to HCA */ }; |