On 5/27/19 5:02 PM, Ming Lei wrote:
Hisi_sas_v3_hw, hpsa, megaraid and mpt3sas use single blk-mq hw queue to submit request, meantime apply multiple private reply queues served as completion queue. The mapping between CPU and reply queue is setup via pci_alloc_irq_vectors_affinity(PCI_IRQ_AFFINITY) just like the usual blk-mq queue mapping. These drivers always use current CPU(raw_smp_processor_id) to figure out the reply queue. Switch to use request's CPU to get the reply queue, so we can drain in-flight request via blk-mq's API before the last CPU of the reply queue becomes offline. Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx> --- drivers/scsi/hisi_sas/hisi_sas_main.c | 5 +++-- drivers/scsi/hpsa.c | 2 +- drivers/scsi/megaraid/megaraid_sas_fusion.c | 4 ++-- drivers/scsi/mpt3sas/mpt3sas_base.c | 16 ++++++++-------- include/scsi/scsi_cmnd.h | 11 +++++++++++ 5 files changed, 25 insertions(+), 13 deletions(-)
Reviewed-by: Hannes Reinecke <hare@xxxxxxxx> Cheers, Hannes
