diff options
| author | Sumit.Saxena@avagotech.com <Sumit.Saxena@avagotech.com> | 2014-09-12 18:57:53 +0530 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2014-09-16 09:14:26 -0700 |
| commit | d2552ebe885314d3c8352e35f2fae2a7478ac778 (patch) | |
| tree | f2ebc6b01009a73b5cd80a833c1f783000b5c713 /drivers/scsi/megaraid/megaraid_sas.h | |
| parent | ac95136ad40fc72c4842fee1ef002390ad96bfa0 (diff) | |
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.h')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h index 5dedf09fc46d..156d4b97d2bd 100644 --- a/drivers/scsi/megaraid/megaraid_sas.h +++ b/drivers/scsi/megaraid/megaraid_sas.h @@ -1188,7 +1188,8 @@ union megasas_sgl_frame { typedef union _MFI_CAPABILITIES { struct { #if defined(__BIG_ENDIAN_BITFIELD) - u32 reserved:28; + u32 reserved:27; + u32 support_ndrive_r1_lb:1; u32 support_max_255lds:1; u32 reserved1:1; u32 support_additional_msix:1; @@ -1198,7 +1199,8 @@ typedef union _MFI_CAPABILITIES { u32 support_additional_msix:1; u32 reserved1:1; u32 support_max_255lds:1; - u32 reserved:28; + u32 support_ndrive_r1_lb:1; + u32 reserved:27; #endif } mfi_capabilities; u32 reg; @@ -1914,6 +1916,8 @@ u16 MR_LdSpanArrayGet(u32 ld, u32 span, struct MR_DRV_RAID_MAP_ALL *map); u16 MR_PdDevHandleGet(u32 pd, struct MR_DRV_RAID_MAP_ALL *map); u16 MR_GetLDTgtId(u32 ld, struct MR_DRV_RAID_MAP_ALL *map); +u16 get_updated_dev_handle(struct megasas_instance *instance, + struct LD_LOAD_BALANCE_INFO *lbInfo, struct IO_REQUEST_INFO *in_info); void mr_update_load_balance_params(struct MR_DRV_RAID_MAP_ALL *map, struct LD_LOAD_BALANCE_INFO *lbInfo); int megasas_get_ctrl_info(struct megasas_instance *instance, |