[SCSI] lpfc 8.3.40: Fix lpfc_used_cpu to be more dynamic

Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index cb465b2..7e5a2b1 100644 (file)
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -60,7 +60,8 @@ unsigned long _dump_buf_dif_order;
 spinlock_t _dump_buf_lock;
 
 /* Used when mapping IRQ vectors in a driver centric manner */
-uint16_t lpfc_used_cpu[LPFC_MAX_CPU];
+uint16_t *lpfc_used_cpu;
+uint32_t lpfc_present_cpu;
 
 static void lpfc_get_hba_model_desc(struct lpfc_hba *, uint8_t *, uint8_t *);
 static int lpfc_post_rcv_buf(struct lpfc_hba *);
@@ -5213,6 +5214,21 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
                rc = -ENOMEM;
                goto out_free_msix;
        }
+       if (lpfc_used_cpu == NULL) {
+               lpfc_used_cpu = kzalloc((sizeof(uint16_t) * lpfc_present_cpu),
+                                        GFP_KERNEL);
+               if (!lpfc_used_cpu) {
+                       lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
+                                       "3335 Failed allocate memory for msi-x "
+                                       "interrupt vector mapping\n");
+                       kfree(phba->sli4_hba.cpu_map);
+                       rc = -ENOMEM;
+                       goto out_free_msix;
+               }
+               for (i = 0; i < lpfc_present_cpu; i++)
+                       lpfc_used_cpu[i] = LPFC_VECTOR_MAP_EMPTY;
+       }
+
        /* Initialize io channels for round robin */
        cpup = phba->sli4_hba.cpu_map;
        rc = 0;
@@ -6824,8 +6840,6 @@ lpfc_sli4_queue_verify(struct lpfc_hba *phba)
        int cfg_fcp_io_channel;
        uint32_t cpu;
        uint32_t i = 0;
-       uint32_t j = 0;
-
 
        /*
         * Sanity check for configured queue parameters against the run-time
@@ -6839,10 +6853,9 @@ lpfc_sli4_queue_verify(struct lpfc_hba *phba)
        for_each_present_cpu(cpu) {
                if (cpu_online(cpu))
                        i++;
-               j++;
        }
        phba->sli4_hba.num_online_cpu = i;
-       phba->sli4_hba.num_present_cpu = j;
+       phba->sli4_hba.num_present_cpu = lpfc_present_cpu;
 
        if (i < cfg_fcp_io_channel) {
                lpfc_printf_log(phba,
@@ -10967,8 +10980,10 @@ lpfc_init(void)
        }
 
        /* Initialize in case vector mapping is needed */
-       for (cpu = 0; cpu < LPFC_MAX_CPU; cpu++)
-               lpfc_used_cpu[cpu] = LPFC_VECTOR_MAP_EMPTY;
+       lpfc_used_cpu = NULL;
+       lpfc_present_cpu = 0;
+       for_each_present_cpu(cpu)
+               lpfc_present_cpu++;
 
        error = pci_register_driver(&lpfc_driver);
        if (error) {
@@ -11008,6 +11023,7 @@ lpfc_exit(void)
                                (1L << _dump_buf_dif_order), _dump_buf_dif);
                free_pages((unsigned long)_dump_buf_dif, _dump_buf_dif_order);
        }
+       kfree(lpfc_used_cpu);
 }
 
 module_init(lpfc_init);

diff --git a/drivers/scsi/lpfc/lpfc_sli4.h b/drivers/scsi/lpfc/lpfc_sli4.h
index 67af460..d9de52f 100644 (file)
--- a/drivers/scsi/lpfc/lpfc_sli4.h
+++ b/drivers/scsi/lpfc/lpfc_sli4.h
@@ -444,7 +444,6 @@ struct lpfc_vector_map_info {
        struct cpumask  maskbits;
 };
 #define LPFC_VECTOR_MAP_EMPTY  0xffff
-#define LPFC_MAX_CPU           256
 
 /* SLI4 HBA data structure entries */
 struct lpfc_sli4_hba {