On Wed, Apr 08, 2015 at 10:59:36AM -0700, Andy Lutomirski wrote:
> This is a regression somewhere between 3.15 and 3.19.3. Let me know
> if more diagnostics would be helpful.
Try this patch:
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index 675b5e7..5a0800d 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -1584,11 +1584,11 @@ megasas_build_ldio_fusion(struct megasas_instance *instance,
fp_possible = io_info.fpOkForIo;
}
- /* Use smp_processor_id() for now until cmd->request->cpu is CPU
+ /* Use raw_smp_processor_id() for now until cmd->request->cpu is CPU
id by default, not CPU group id, otherwise all MSI-X queues won't
be utilized */
cmd->request_desc->SCSIIO.MSIxIndex = instance->msix_vectors ?
- smp_processor_id() % instance->msix_vectors : 0;
+ raw_smp_processor_id() % instance->msix_vectors : 0;
if (fp_possible) {
megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
@@ -1693,7 +1693,10 @@ megasas_build_dcdb_fusion(struct megasas_instance *instance,
<< MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle;
cmd->request_desc->SCSIIO.MSIxIndex =
- instance->msix_vectors ? smp_processor_id() % instance->msix_vectors : 0;
+ instance->msix_vectors ?
+ raw_smp_processor_id() %
+ instance->msix_vectors :
+ 0;
os_timeout_value = scmd->request->timeout / HZ;
if (instance->secure_jbod_support &&
--
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