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authorChristoph Hellwig <hch@infradead.org>2015-04-15 09:44:37 -0700
committerJames Bottomley <JBottomley@Odin.com>2015-04-16 10:37:58 -0700
commit16b8528d20607925899b1df93bfd8fbab98d267c (patch)
treed937083867262ee5fcc1b13e75a37b3164a1f069 /drivers/scsi
parente557990e358934fb168d30371c9c0f63e314c6b8 (diff)
downloadlinux-16b8528d20607925899b1df93bfd8fbab98d267c.tar.bz2
megaraid_sas: use raw_smp_processor_id()
We only want to steer the I/O completion towards a queue, but don't actually access any per-CPU data, so the raw_ version is fine to use and avoids the warnings when using smp_processor_id(). Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Andy Lutomirski <luto@kernel.org> Tested-by: Andy Lutomirski <luto@kernel.org> Acked-by: Sumit Saxena <sumit.saxena@avagotech.com> Cc: <stable@vger.kernel.org> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/megaraid/megaraid_sas_fusion.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index 675b5e7aba94..5a0800d19970 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 &&