Re: [PATCH/RESEND] scsi.mq: Added use_cmd_list flag in scsi_host to reduce lock contention

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



>>>>> "Kashyap" ==   <Kashyap.Desai@xxxxxxxxxxxxx> writes:

Kashyap> Comment provided by Bart Van and Chris H is addressed in this
Kashyap> patch.  Add use_cmd_list flag in scsi_host to indicate scs.mq
Kashyap> stack to keep track of cmd_list per sdev.

Kashyap> Default behaviour is not to keep track of cmd_list per sdev, as
Kashyap> this may introduce lock contention. (overhead is more on
Kashyap> multi-node NUMA.)

Kashyap> Patch is tested using megaraid_sas driver with "use_cmd_list"
Kashyap> value set to 1 and 0.  Added MAINTAINER of Adaptec to verify
Kashyap> changes.

Kashyap> Signed-off-by: Kashyap Desai <kashyap.desai@xxxxxxxxxxxxx>

Looks good to me.

Reviewed-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>

-- 
Martin K. Petersen	Oracle Linux Engineering
--
To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [SCSI Target Devel]     [Linux SCSI Target Infrastructure]     [Kernel Newbies]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Linux IIO]     [Samba]     [Device Mapper]
  Powered by Linux