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

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Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
James Smart 2013-05-31 17:03:07 -04:00 committed by James Bottomley
parent feccada972
commit b246de1743
2 changed files with 23 additions and 8 deletions
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30
drivers/scsi/lpfc/lpfc_init.c
View file

@ -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);

1
drivers/scsi/lpfc/lpfc_sli4.h
View file

@ -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 {