From 564e1c86c810f9ccfe4300afa402815e3db4886d Mon Sep 17 00:00:00 2001 From: Swen Schillig Date: Tue, 18 Aug 2009 15:43:19 +0200 Subject: [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 Signed-off-by: Christof Schmitt Signed-off-by: James Bottomley --- drivers/s390/scsi/zfcp_def.h | 34 ++++++++++++++++++++++++---------- 1 file changed, 24 insertions(+), 10 deletions(-) (limited to 'drivers/s390/scsi/zfcp_def.h') diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h index a04bdfd..bac5c49 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; }; -- cgit v1.1