diff options
| author | Christoph Hellwig <hch@infradead.org> | 2015-04-15 09:44:37 -0700 |
|---|---|---|
| committer | Zefan Li <lizefan@huawei.com> | 2015-09-18 09:20:31 +0800 |
| commit | b7cecd38cf317ef27a698a2c5ab876f9f01ca290 (patch) | |
| tree | a3492593dc9a254ed3064d8f7cd98eb84f062aea | |
| parent | b0772ad6130eae4b2d2ba585b34ffbd03dd264af (diff) | |
| download | lwn-b7cecd38cf317ef27a698a2c5ab876f9f01ca290.tar.gz lwn-b7cecd38cf317ef27a698a2c5ab876f9f01ca290.zip | |
megaraid_sas: use raw_smp_processor_id()
commit 16b8528d20607925899b1df93bfd8fbab98d267c upstream.
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>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
[lizf: Backported to 3.4: drop the changes to megasas_build_dcdb_fusion()]
Signed-off-by: Zefan Li <lizefan@huawei.com>
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_fusion.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c index bfd87fab39aa..3e0f71c155a3 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c @@ -1426,11 +1426,11 @@ 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, |