From: Sreekanth Reddy Date: Thu, 26 Dec 2019 11:13:32 +0000 (-0500) Subject: scsi: mpt3sas: Remove usage of device_busy counter X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=c50ed99cd56ee725d9e14dffec8e8f1641b8ca30;p=linux.git scsi: mpt3sas: Remove usage of device_busy counter Remove usage of device_busy counter from driver. Instead of device_busy counter now driver uses 'nr_active' counter of request_queue to get the number of inflight request for a LUN. Link: https://lore.kernel.org/r/20191226111333.26131-10-sreekanth.reddy@broadcom.com Signed-off-by: Sreekanth Reddy Signed-off-by: Martin K. Petersen --- diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c index 120ca4c654570..a488bbda278da 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_base.c +++ b/drivers/scsi/mpt3sas/mpt3sas_base.c @@ -3573,6 +3573,22 @@ _base_get_msix_index(struct MPT3SAS_ADAPTER *ioc, return ioc->cpu_msix_table[raw_smp_processor_id()]; } +/** + * _base_sdev_nr_inflight_request -get number of inflight requests + * of a request queue. + * @q: request_queue object + * + * returns number of inflight request of a request queue. + */ +inline unsigned long +_base_sdev_nr_inflight_request(struct request_queue *q) +{ + struct blk_mq_hw_ctx *hctx = q->queue_hw_ctx[0]; + + return atomic_read(&hctx->nr_active); +} + + /** * _base_get_high_iops_msix_index - get the msix index of * high iops queues @@ -3592,7 +3608,7 @@ _base_get_high_iops_msix_index(struct MPT3SAS_ADAPTER *ioc, * reply queues in terms of batch count 16 when outstanding * IOs on the target device is >=8. */ - if (atomic_read(&scmd->device->device_busy) > + if (_base_sdev_nr_inflight_request(scmd->device->request_queue) > MPT3SAS_DEVICE_HIGH_IOPS_DEPTH) return base_mod64(( atomic64_add_return(1, &ioc->high_iops_outstanding) /