diff options
| author | Sumit.Saxena@avagotech.com <Sumit.Saxena@avagotech.com> | 2014-09-12 15:27:53 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2014-09-16 18:14:26 +0200 |
| commit | d2552ebe885314d3c8352e35f2fae2a7478ac778 (patch) | |
| tree | f2ebc6b01009a73b5cd80a833c1f783000b5c713 /drivers/scsi/megaraid/megaraid_sas_fusion.h | |
| parent | megaraid_sas : Add module parameter to disable IRQ-CPU affinity hint (diff) | |
| download | linux-d2552ebe885314d3c8352e35f2fae2a7478ac778.tar.xz linux-d2552ebe885314d3c8352e35f2fae2a7478ac778.zip | |
megaraid_sas : N-drive primary raid level 1 load balancing
Resending the patch. Addressed the review comments from Tomas Henzl.
Current driver does fast path read load balancing between arm and mirror disk
for two Drive Raid-1 configuration only.
Now, Driver support fast path read load balancing for all (any number of disk) Raid-1 configuration.
Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/scsi/megaraid/megaraid_sas_fusion.h')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas_fusion.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h b/drivers/scsi/megaraid/megaraid_sas_fusion.h index 065c27031c9c..75844260fae9 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.h +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h @@ -630,6 +630,8 @@ struct IO_REQUEST_INFO { u8 start_span; u8 reserved; u64 start_row; + u8 span_arm; /* span[7:5], arm[4:0] */ + u8 pd_after_lb; }; struct MR_LD_TARGET_SYNC { @@ -681,14 +683,14 @@ struct megasas_cmd_fusion { u32 sync_cmd_idx; u32 index; u8 flags; + u8 pd_r1_lb; }; struct LD_LOAD_BALANCE_INFO { u8 loadBalanceFlag; u8 reserved1; - u16 raid1DevHandle[2]; - atomic_t scsi_pending_cmds[2]; - u64 last_accessed_block[2]; + atomic_t scsi_pending_cmds[MAX_PHYSICAL_DEVICES]; + u64 last_accessed_block[MAX_PHYSICAL_DEVICES]; }; /* SPAN_SET is info caclulated from span info from Raid map per LD */ |