Re: [PATCH V2 8/8] scsi: hpsa: use blk_mq to solve irq affinity issue

2018-02-06 Thread Ming Lei
On Tue, Feb 06, 2018 at 09:39:26AM +0100, Hannes Reinecke wrote: > On 02/05/2018 04:20 PM, Ming Lei wrote: > > This patch uses .force_blk_mq to drive HPSA via SCSI_MQ, meantime maps > > each reply queue to blk_mq's hw queue, then .queuecommand can always > > choose the hw queue as the reply queue.

Re: [PATCH V2 8/8] scsi: hpsa: use blk_mq to solve irq affinity issue

2018-02-06 Thread Hannes Reinecke
On 02/05/2018 04:20 PM, Ming Lei wrote: > This patch uses .force_blk_mq to drive HPSA via SCSI_MQ, meantime maps > each reply queue to blk_mq's hw queue, then .queuecommand can always > choose the hw queue as the reply queue. And if no any online CPU is > mapped to one hw queue, request can't be su

Re: [PATCH V2 8/8] scsi: hpsa: use blk_mq to solve irq affinity issue

2018-02-06 Thread Ming Lei
Hello chenxiang, On Tue, Feb 06, 2018 at 10:18:19AM +0800, chenxiang (M) wrote: > 在 2018/2/5 23:20, Ming Lei 写道: > > This patch uses .force_blk_mq to drive HPSA via SCSI_MQ, meantime maps > > each reply queue to blk_mq's hw queue, then .queuecommand can always > > choose the hw queue as the reply

Re: [PATCH V2 8/8] scsi: hpsa: use blk_mq to solve irq affinity issue

2018-02-05 Thread chenxiang (M)
在 2018/2/5 23:20, Ming Lei 写道: This patch uses .force_blk_mq to drive HPSA via SCSI_MQ, meantime maps each reply queue to blk_mq's hw queue, then .queuecommand can always choose the hw queue as the reply queue. And if no any online CPU is mapped to one hw queue, request can't be submitted to this

RE: [PATCH V2 8/8] scsi: hpsa: use blk_mq to solve irq affinity issue

2018-02-05 Thread Don Brace
Reinecke ; Arun Easi > ; Omar Sandoval ; Martin K . > Petersen ; James Bottomley > ; Christoph Hellwig ; > Don Brace ; Kashyap Desai > ; Peter Rivera ; > Paolo Bonzini > Subject: Re: [PATCH V2 8/8] scsi: hpsa: use blk_mq to solve irq affinity issue > > EXTERNAL EMAIL >

RE: [PATCH V2 8/8] scsi: hpsa: use blk_mq to solve irq affinity issue

2018-02-05 Thread Don Brace
> -Original Message- > This is a critical issue on the HPSA because Linus already has the > original commit that causes the system to fail to boot. > > All my testing was on DL380 G7 servers with: > > Hewlett-Packard Company Smart Array G6 controllers > Vendor: HP Model: P410i

Re: [PATCH V2 8/8] scsi: hpsa: use blk_mq to solve irq affinity issue

2018-02-05 Thread Laurence Oberman
On Mon, 2018-02-05 at 23:20 +0800, Ming Lei wrote: > This patch uses .force_blk_mq to drive HPSA via SCSI_MQ, meantime > maps > each reply queue to blk_mq's hw queue, then .queuecommand can always > choose the hw queue as the reply queue. And if no any online CPU is > mapped to one hw queue, reques