mpt3sas/megaraid_sas : reply queue load balancing

Patch for Fix-2 explained in PATCH 0.

---
 mpt3sas/mpt3sas_base.c | 5 ++++-
 mpt3sas/mpt3sas_base.h | 1 +
 2 files changed, 5 insertions(+), 1 deletion(-)

0b351d4..20bf2ad 100644

@@ -2811,7 +2811,8 @@ mpt3sas_base_get_reply_virt_addr(struct

MPT3SAS_ADAPTER *ioc, u32 phys_addr) static inline u8 _base_get_msix_index(struct MPT3SAS_ADAPTER *ioc) {
- return ioc->cpu_msix_table[raw_smp_processor_id()];
+ return ioc->reply_queue_count ? (atomic64_add_return(1,
+ &ioc->total_io_cnt) % ioc->reply_queue_count) : 0;
}

/**
@@ -5775,6 +5776,8 @@ _base_make_ioc_operational(struct MPT3SAS_ADAPTER *ioc)
dinitprintk(ioc, pr_info(MPT3SAS_FMT "%s\n", ioc->name,
__func__));

+ atomic64_set(&ioc->total_io_cnt, 0);
+
/* clean the delayed target reset list */ list_for_each_entry_safe(delayed_tr, delayed_tr_next,
&ioc->delayed_tr_list, list) {

456d928..1c39107 100644

@@ -1357,6 +1357,7 @@ struct MPT3SAS_ADAPTER {
 	u8		is_gen35_ioc;
 	u8		atomic_desc_capable;
 	u32		irqpoll_weight;
+	atomic64_t	total_io_cnt;
 	PUT_SMID_IO_FP_HIP put_smid_scsi_io;
 	PUT_SMID_IO_FP_HIP put_smid_fast_path;
 	PUT_SMID_IO_FP_HIP put_smid_hi_priority;

--
2.5.5