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authorJamie Wellnitz <Jamie.Wellnitz@emulex.com>2006-02-28 22:33:08 -0500
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2006-03-06 09:46:57 -0600
commitcf5bf97e1d28651fd689be9c974b2318ac262f2d (patch)
treedf7a3b25a5fccc189bf1cb00de8f2f04eaef0e71 /drivers/scsi
parent56178645c2686a7ef630e1b23b81d40dcfb553e6 (diff)
[PATCH] lpfc 8.1.3: Fix performance when using multiple SLI rings
Fix performance when using multiple SLI rings Currently the driver allocates all of its SLI command and response ring entries to one primary ring. Other rings get little, or no, resources. Allow more resources to be given to ring 1 Signed-off-by: Jamie Wellnitz <Jamie.Wellnitz@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/lpfc/lpfc.h1
-rw-r--r--drivers/scsi/lpfc/lpfc_attr.c10
-rw-r--r--drivers/scsi/lpfc/lpfc_sli.c42
3 files changed, 50 insertions, 3 deletions
diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h
index c4cca9124f4..2f67a8a9259 100644
--- a/drivers/scsi/lpfc/lpfc.h
+++ b/drivers/scsi/lpfc/lpfc.h
@@ -293,6 +293,7 @@ struct lpfc_hba {
uint32_t cfg_link_speed;
uint32_t cfg_cr_delay;
uint32_t cfg_cr_count;
+ uint32_t cfg_multi_ring_support;
uint32_t cfg_fdmi_on;
uint32_t cfg_discovery_threads;
uint32_t cfg_max_luns;
diff --git a/drivers/scsi/lpfc/lpfc_attr.c b/drivers/scsi/lpfc/lpfc_attr.c
index ab49379b6ab..2558156f064 100644
--- a/drivers/scsi/lpfc/lpfc_attr.c
+++ b/drivers/scsi/lpfc/lpfc_attr.c
@@ -671,6 +671,14 @@ LPFC_ATTR_RW(cr_count, 1, 1, 255, "A count of I/O completions after which an "
"interrupt response is generated");
/*
+# lpfc_multi_ring_support: Determines how many rings to spread available
+# cmd/rsp IOCB entries across.
+# Value range is [1,2]. Default value is 1.
+*/
+LPFC_ATTR_R(multi_ring_support, 1, 1, 2, "Determines number of primary "
+ "SLI rings to spread IOCB entries across");
+
+/*
# lpfc_fdmi_on: controls FDMI support.
# 0 = no FDMI support
# 1 = support FDMI without attribute of hostname
@@ -726,6 +734,7 @@ struct class_device_attribute *lpfc_host_attrs[] = {
&class_device_attr_lpfc_link_speed,
&class_device_attr_lpfc_cr_delay,
&class_device_attr_lpfc_cr_count,
+ &class_device_attr_lpfc_multi_ring_support,
&class_device_attr_lpfc_fdmi_on,
&class_device_attr_lpfc_max_luns,
&class_device_attr_nport_evt_cnt,
@@ -1440,6 +1449,7 @@ lpfc_get_cfgparam(struct lpfc_hba *phba)
lpfc_log_verbose_init(phba, lpfc_log_verbose);
lpfc_cr_delay_init(phba, lpfc_cr_delay);
lpfc_cr_count_init(phba, lpfc_cr_count);
+ lpfc_multi_ring_support_init(phba, lpfc_multi_ring_support);
lpfc_lun_queue_depth_init(phba, lpfc_lun_queue_depth);
lpfc_fcp_class_init(phba, lpfc_fcp_class);
lpfc_use_adisc_init(phba, lpfc_use_adisc);
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index d6ffe26ae12..d08fd89dd44 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -766,7 +766,9 @@ lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
}
/* unSolicited Responses */
if (pring->prt[0].profile) {
- (pring->prt[0].lpfc_sli_rcv_unsol_event) (phba, pring, saveq);
+ if (pring->prt[0].lpfc_sli_rcv_unsol_event)
+ (pring->prt[0].lpfc_sli_rcv_unsol_event) (phba, pring,
+ saveq);
match = 1;
} else {
/* We must search, based on rctl / type
@@ -777,8 +779,9 @@ lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
Rctl)
&& (pring->prt[i].
type == Type)) {
- (pring->prt[i].lpfc_sli_rcv_unsol_event)
- (phba, pring, saveq);
+ if (pring->prt[i].lpfc_sli_rcv_unsol_event)
+ (pring->prt[i].lpfc_sli_rcv_unsol_event)
+ (phba, pring, saveq);
match = 1;
break;
}
@@ -2377,6 +2380,37 @@ lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
return IOCB_BUSY;
}
+static int
+lpfc_extra_ring_setup( struct lpfc_hba *phba)
+{
+ struct lpfc_sli *psli;
+ struct lpfc_sli_ring *pring;
+
+ psli = &phba->sli;
+
+ /* Adjust cmd/rsp ring iocb entries more evenly */
+ pring = &psli->ring[psli->fcp_ring];
+ pring->numCiocb -= SLI2_IOCB_CMD_R1XTRA_ENTRIES;
+ pring->numRiocb -= SLI2_IOCB_RSP_R1XTRA_ENTRIES;
+ pring->numCiocb -= SLI2_IOCB_CMD_R3XTRA_ENTRIES;
+ pring->numRiocb -= SLI2_IOCB_RSP_R3XTRA_ENTRIES;
+
+ pring = &psli->ring[1];
+ pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
+ pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
+ pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
+ pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
+
+ /* Setup default profile for this ring */
+ pring->iotag_max = 4096;
+ pring->num_mask = 1;
+ pring->prt[0].profile = 0; /* Mask 0 */
+ pring->prt[0].rctl = FC_UNSOL_DATA;
+ pring->prt[0].type = 5;
+ pring->prt[0].lpfc_sli_rcv_unsol_event = NULL;
+ return 0;
+}
+
int
lpfc_sli_setup(struct lpfc_hba *phba)
{
@@ -2460,6 +2494,8 @@ lpfc_sli_setup(struct lpfc_hba *phba)
"SLI2 SLIM Data: x%x x%x\n",
phba->brd_no, totiocb, MAX_SLI2_IOCB);
}
+ if (phba->cfg_multi_ring_support == 2)
+ lpfc_extra_ring_setup(phba);
return 0;
}