Fix lpfc_used_cpu to be more dynamic
Signed-off-by: James Smart <james.sm...@emulex.com>
---
lpfc_init.c | 30 +++++++++++++++++++++++-------
lpfc_sli4.h | 1 -
2 files changed, 23 insertions(+), 8 deletions(-)
diff -upNr a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
--- a/drivers/scsi/lpfc/lpfc_init.c 2013-05-20 09:31:12.000000000 -0400
+++ b/drivers/scsi/lpfc/lpfc_init.c 2013-05-31 10:58:00.278057229 -0400
@@ -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 l
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 *
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 *
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 -upNr a/drivers/scsi/lpfc/lpfc_sli4.h b/drivers/scsi/lpfc/lpfc_sli4.h
--- a/drivers/scsi/lpfc/lpfc_sli4.h 2013-05-03 09:24:34.000000000 -0400
+++ b/drivers/scsi/lpfc/lpfc_sli4.h 2013-05-31 10:58:00.283057229 -0400
@@ -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 {
--
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