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[SCSI] libfc: cache align fc_exch_pool

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fix holes and better cache aligned fields.

Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Vasu Dev
2011-09-27 21:38:08 -07:00
committed by James Bottomley
parent 49a198898e
commit e17b4af7c7
1 changed files with 5 additions and 6 deletions
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11
drivers/scsi/libfc/fc_exch.c
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@@ -65,16 +65,15 @@ static struct workqueue_struct *fc_exch_workqueue;
* assigned range of exchanges to per cpu pool. * assigned range of exchanges to per cpu pool.
*/ */
struct fc_exch_pool { struct fc_exch_pool {
spinlock_t lock;
struct list_head ex_list;
u16 next_index; u16 next_index;
u16 total_exches; u16 total_exches;
/* two cache of free slot in exch array */ /* two cache of free slot in exch array */
u16 left; u16 left;
u16 right; u16 right;
} ____cacheline_aligned_in_smp;
spinlock_t lock;
struct list_head ex_list;
};
/** /**
* struct fc_exch_mgr - The Exchange Manager (EM). * struct fc_exch_mgr - The Exchange Manager (EM).
@@ -91,13 +90,13 @@ struct fc_exch_pool {
* It manages the allocation of exchange IDs. * It manages the allocation of exchange IDs.
*/ */
struct fc_exch_mgr { struct fc_exch_mgr {
struct fc_exch_pool *pool;
mempool_t *ep_pool;
enum fc_class class; enum fc_class class;
struct kref kref; struct kref kref;
u16 min_xid; u16 min_xid;
u16 max_xid; u16 max_xid;
mempool_t *ep_pool;
u16 pool_max_index; u16 pool_max_index;
struct fc_exch_pool *pool;
/* /*
* currently exchange mgr stats are updated but not used. * currently exchange mgr stats are updated but not used.