xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

megaraid_sas: reserve commands for IOCTLs and internal DCMDs

Browse Source 
1) For fusion adapters, limit reserved frames for non SCSI commands to 8
   (3 for parallel IOCTLs + 5 for driver's internal DCMDs).
   Earlier reserved commands for non SCSI IO frames was set to 32, so with
   this implementation, increased per controller "can_queue".
   Behavior of MFI controllers will remain unchanged.

2) Optimize the code related to per controller's 'can_queue' setting.

Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Signed-off-by: Chaitra Basappa <chaitra.basappa@avagotech.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Sumit.Saxena@avagotech.com
2015-01-05 20:06:23 +05:30
committed by Christoph Hellwig
parent c8dd61eff2
commit ae09a6c1fd
3 changed files with 45 additions and 39 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/scsi/megaraid/megaraid_sas.h
View File

@@ -1082,6 +1082,8 @@ enum MR_SCSI_CMD_TYPE {
*/
#define MEGASAS_INT_CMDS 32
#define MEGASAS_SKINNY_INT_CMDS 5
#define MEGASAS_FUSION_INTERNAL_CMDS 5
#define MEGASAS_FUSION_IOCTL_CMDS 3
#define MEGASAS_MAX_MSIX_QUEUES 128
/*
@@ -1687,9 +1689,8 @@ struct megasas_instance {
u16 max_num_sge;
u16 max_fw_cmds;
/* For Fusion its num IOCTL cmds, for others MFI based its
max_fw_cmds */
u16 max_mfi_cmds;
u16 max_scsi_cmds;
u32 max_sectors_per_req;
struct megasas_aen_event *ev;
@@ -1765,7 +1766,7 @@ struct megasas_instance {
u8 requestorId;
char PlasmaFW111;
char mpio;
int throttlequeuedepth;
u16 throttlequeuedepth;
u8 mask_interrupts;
u8 is_imr;
};