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authorSwen Schillig <swen@vnet.ibm.com>2009-08-18 15:43:19 +0200
committerJames Bottomley <James.Bottomley@suse.de>2009-09-05 08:49:27 -0500
commit564e1c86c810f9ccfe4300afa402815e3db4886d (patch)
treeecb88038c443d6486e9df352c79b3c78be5454ef /drivers/s390/scsi/zfcp_def.h
parent42428f747a8a0db9c6de03e105932316defad65d (diff)
[SCSI] zfcp: Move qdio related data out of zfcp_adapter
The zfcp_adapter structure was growing over time to a size of almost one memory page. To reduce the size of the data structure and to seperate different layers, put all qdio related data in the new zfcp_qdio data structure. Signed-off-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/s390/scsi/zfcp_def.h')
-rw-r--r--drivers/s390/scsi/zfcp_def.h34
1 files changed, 24 insertions, 10 deletions
diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h
index a04bdfd4d2f6..bac5c497eab5 100644
--- a/drivers/s390/scsi/zfcp_def.h
+++ b/drivers/s390/scsi/zfcp_def.h
@@ -428,6 +428,29 @@ struct zfcp_latencies {
spinlock_t lock;
};
+/** struct zfcp_qdio - basic QDIO data structure
+ * @resp_q: response queue
+ * @req_q: request queue
+ * @stat_lock: lock to protect req_q_util and req_q_time
+ * @req_q_lock; lock to serialize access to request queue
+ * @req_q_time: time of last fill level change
+ * @req_q_util: used for accounting
+ * @req_q_full: queue full incidents
+ * @req_q_wq: used to wait for SBAL availability
+ * @adapter: adapter used in conjunction with this QDIO structure
+ */
+struct zfcp_qdio {
+ struct zfcp_qdio_queue resp_q;
+ struct zfcp_qdio_queue req_q;
+ spinlock_t stat_lock;
+ spinlock_t req_q_lock;
+ ktime_t req_q_time;
+ u64 req_q_util;
+ atomic_t req_q_full;
+ wait_queue_head_t req_q_wq;
+ struct zfcp_adapter *adapter;
+};
+
struct zfcp_adapter {
atomic_t refcount; /* reference count */
wait_queue_head_t remove_wq; /* can be used to wait for
@@ -436,6 +459,7 @@ struct zfcp_adapter {
u64 peer_wwpn; /* P2P peer WWPN */
u32 peer_d_id; /* P2P peer D_ID */
struct ccw_device *ccw_device; /* S/390 ccw device */
+ struct zfcp_qdio *qdio;
u32 hydra_version; /* Hydra version */
u32 fsf_lic_version;
u32 adapter_features; /* FCP channel features */
@@ -447,15 +471,7 @@ struct zfcp_adapter {
unsigned long req_no; /* unique FSF req number */
struct list_head *req_list; /* list of pending reqs */
spinlock_t req_list_lock; /* request list lock */
- struct zfcp_qdio_queue req_q; /* request queue */
- spinlock_t req_q_lock; /* for operations on queue */
- ktime_t req_q_time; /* time of last fill level change */
- u64 req_q_util; /* for accounting */
- spinlock_t qdio_stat_lock;
u32 fsf_req_seq_no; /* FSF cmnd seq number */
- wait_queue_head_t request_wq; /* can be used to wait for
- more avaliable SBALs */
- struct zfcp_qdio_queue resp_q; /* response queue */
rwlock_t abort_lock; /* Protects against SCSI
stack abort/command
completion races */
@@ -478,13 +494,11 @@ struct zfcp_adapter {
struct zfcp_wka_ports *gs; /* generic services */
struct zfcp_dbf *dbf; /* debug traces */
struct zfcp_adapter_mempool pool; /* Adapter memory pools */
- struct qdio_initialize qdio_init_data; /* for qdio_establish */
struct fc_host_statistics *fc_stats;
struct fsf_qtcb_bottom_port *stats_reset_data;
unsigned long stats_reset;
struct work_struct scan_work;
struct service_level service_level;
- atomic_t qdio_outb_full; /* queue full incidents */
struct workqueue_struct *work_queue;
};