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| author |   Tyrel Datwyler <tyreld@linux.ibm.com> | 2021-01-06 14:18:33 -0600 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2021-01-07 22:37:13 -0500 |
| commit | 57e80e0bc108589a5373a1f2e2ef5f0e6ad5e55b (patch) | |
| tree | b920908df7f91ae1cd6cba558e47972d242aa5ce /drivers/scsi/ibmvscsi/ibmvfc.h | |
| parent | scsi: ibmvfc: Make command event pool queue specific (diff) | |
| download | linux-dev-57e80e0bc108589a5373a1f2e2ef5f0e6ad5e55b.tar.xz linux-dev-57e80e0bc108589a5373a1f2e2ef5f0e6ad5e55b.zip | |
scsi: ibmvfc: Define per-queue state/list locks
Define per-queue locks for protecting queue state and event pool sent/free
lists. The evt list lock is initially redundant but it allows the driver to
be modified in the follow-up patches to relax the queue locking around
submissions and completions.
Link: https://lore.kernel.org/r/20210106201835.1053593-4-tyreld@linux.ibm.com
Reviewed-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/ibmvscsi/ibmvfc.h')
| -rw-r--r-- | drivers/scsi/ibmvscsi/ibmvfc.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.h b/drivers/scsi/ibmvscsi/ibmvfc.h index 61c73b6f7a77..faf5b50d65b9 100644 --- a/drivers/scsi/ibmvscsi/ibmvfc.h +++ b/drivers/scsi/ibmvscsi/ibmvfc.h @@ -768,10 +768,13 @@ struct ibmvfc_queue { dma_addr_t msg_token; enum ibmvfc_msg_fmt fmt; int size, cur; + spinlock_t _lock; + spinlock_t *q_lock; struct ibmvfc_event_pool evt_pool; struct list_head sent; struct list_head free; + spinlock_t l_lock; }; enum ibmvfc_host_action { @@ -808,11 +811,13 @@ struct ibmvfc_host { enum ibmvfc_host_action action; #define IBMVFC_NUM_TRACE_INDEX_BITS 8 #define IBMVFC_NUM_TRACE_ENTRIES (1 << IBMVFC_NUM_TRACE_INDEX_BITS) +#define IBMVFC_TRACE_INDEX_MASK (IBMVFC_NUM_TRACE_ENTRIES - 1) #define IBMVFC_TRACE_SIZE (sizeof(struct ibmvfc_trace_entry) * IBMVFC_NUM_TRACE_ENTRIES) struct ibmvfc_trace_entry *trace; - u32 trace_index:IBMVFC_NUM_TRACE_INDEX_BITS; + atomic_t trace_index; int num_targets; struct list_head targets; + struct list_head purge; struct device *dev; struct dma_pool *sg_pool; mempool_t *tgt_pool; |