From c40ecc12cfdb630332198a04e2832ae8218a61f1 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 13 Nov 2014 14:25:11 +0100 Subject: scsi: avoid ->change_queue_depth indirection for queue full tracking All drivers use the implementation for ramping the queue up and down, so instead of overloading the change_queue_depth method call the implementation diretly if the driver opts into it by setting the track_queue_depth flag in the host template. Note that a few drivers validated the new queue depth in their change_queue_depth method, but as we never go over the queue depth set during slave_configure or the sysfs file this isn't nessecary and can safely be removed. Signed-off-by: Christoph Hellwig Reviewed-by: Mike Christie Reviewed-by: Hannes Reinecke Reviewed-by: Venkatesh Srinivas --- drivers/infiniband/ulp/iser/iscsi_iser.c | 1 + drivers/infiniband/ulp/srp/ib_srp.c | 20 ++++++------- drivers/s390/scsi/zfcp_scsi.c | 15 ++-------- drivers/scsi/aic94xx/aic94xx_init.c | 1 + drivers/scsi/be2iscsi/be_main.c | 2 +- drivers/scsi/bnx2fc/bnx2fc_fcoe.c | 1 + drivers/scsi/bnx2i/bnx2i_iscsi.c | 1 + drivers/scsi/cxgbi/cxgb3i/cxgb3i.c | 1 + drivers/scsi/cxgbi/cxgb4i/cxgb4i.c | 1 + drivers/scsi/fcoe/fcoe.c | 1 + drivers/scsi/fnic/fnic_main.c | 1 + drivers/scsi/ibmvscsi/ibmvfc.c | 1 + drivers/scsi/isci/init.c | 1 + drivers/scsi/iscsi_tcp.c | 1 + drivers/scsi/libfc/fc_fcp.c | 14 +-------- drivers/scsi/libiscsi.c | 14 +-------- drivers/scsi/libsas/sas_scsi_host.c | 17 ++--------- drivers/scsi/lpfc/lpfc_scsi.c | 23 ++------------- drivers/scsi/mpt2sas/mpt2sas_scsih.c | 10 ++----- drivers/scsi/mpt3sas/mpt3sas_scsih.c | 10 ++----- drivers/scsi/mvsas/mv_init.c | 1 + drivers/scsi/pm8001/pm8001_init.c | 1 + drivers/scsi/qla2xxx/qla_os.c | 48 ++----------------------------- drivers/scsi/qla4xxx/ql4_os.c | 16 +++-------- drivers/scsi/scsi_debug.c | 49 ++++++++------------------------ drivers/scsi/scsi_error.c | 15 ++++------ drivers/scsi/ufs/ufshcd.c | 14 ++------- drivers/scsi/virtio_scsi.c | 15 ++-------- drivers/target/loopback/tcm_loop.c | 15 ++-------- include/scsi/scsi_host.h | 7 +++-- 30 files changed, 73 insertions(+), 244 deletions(-) diff --git a/drivers/infiniband/ulp/iser/iscsi_iser.c b/drivers/infiniband/ulp/iser/iscsi_iser.c index f42ab14105ac..812a2891de58 100644 --- a/drivers/infiniband/ulp/iser/iscsi_iser.c +++ b/drivers/infiniband/ulp/iser/iscsi_iser.c @@ -922,6 +922,7 @@ static struct scsi_host_template iscsi_iser_sht = { .use_clustering = DISABLE_CLUSTERING, .proc_name = "iscsi_iser", .this_id = -1, + .track_queue_depth = 1, }; static struct iscsi_transport iscsi_iser_transport = { diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c index 57b5ff1bbcb6..98a303558930 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.c +++ b/drivers/infiniband/ulp/srp/ib_srp.c @@ -2402,7 +2402,7 @@ static int srp_cm_handler(struct ib_cm_id *cm_id, struct ib_cm_event *event) * srp_change_queue_depth - setting device queue depth * @sdev: scsi device struct * @qdepth: requested queue depth - * @reason: SCSI_QDEPTH_DEFAULT/SCSI_QDEPTH_QFULL/SCSI_QDEPTH_RAMP_UP + * @reason: SCSI_QDEPTH_DEFAULT * (see include/scsi/scsi_host.h for definition) * * Returns queue depth. @@ -2412,18 +2412,13 @@ srp_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason) { struct Scsi_Host *shost = sdev->host; int max_depth; - if (reason == SCSI_QDEPTH_DEFAULT || reason == SCSI_QDEPTH_RAMP_UP) { - max_depth = shost->can_queue; - if (!sdev->tagged_supported) - max_depth = 1; - if (qdepth > max_depth) - qdepth = max_depth; - scsi_adjust_queue_depth(sdev, qdepth); - } else if (reason == SCSI_QDEPTH_QFULL) - scsi_track_queue_full(sdev, qdepth); - else - return -EOPNOTSUPP; + max_depth = shost->can_queue; + if (!sdev->tagged_supported) + max_depth = 1; + if (qdepth > max_depth) + qdepth = max_depth; + scsi_adjust_queue_depth(sdev, qdepth); return sdev->queue_depth; } @@ -2766,6 +2761,7 @@ static struct scsi_host_template srp_template = { .use_clustering = ENABLE_CLUSTERING, .shost_attrs = srp_host_attrs, .use_blk_tags = 1, + .track_queue_depth = 1, }; static int srp_sdev_count(struct Scsi_Host *host) diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c index b5dfa51f396f..179bf3d8af6c 100644 --- a/drivers/s390/scsi/zfcp_scsi.c +++ b/drivers/s390/scsi/zfcp_scsi.c @@ -35,19 +35,7 @@ MODULE_PARM_DESC(allow_lun_scan, "For NPIV, scan and attach all storage LUNs"); static int zfcp_scsi_change_queue_depth(struct scsi_device *sdev, int depth, int reason) { - switch (reason) { - case SCSI_QDEPTH_DEFAULT: - scsi_adjust_queue_depth(sdev, depth); - break; - case SCSI_QDEPTH_QFULL: - scsi_track_queue_full(sdev, depth); - break; - case SCSI_QDEPTH_RAMP_UP: - scsi_adjust_queue_depth(sdev, depth); - break; - default: - return -EOPNOTSUPP; - } + scsi_adjust_queue_depth(sdev, depth); return sdev->queue_depth; } @@ -320,6 +308,7 @@ static struct scsi_host_template zfcp_scsi_host_template = { .use_clustering = 1, .shost_attrs = zfcp_sysfs_shost_attrs, .sdev_attrs = zfcp_sysfs_sdev_attrs, + .track_queue_depth = 1, }; /** diff --git a/drivers/scsi/aic94xx/aic94xx_init.c b/drivers/scsi/aic94xx/aic94xx_init.c index 579dc2f460c4..a64cf932d03d 100644 --- a/drivers/scsi/aic94xx/aic94xx_init.c +++ b/drivers/scsi/aic94xx/aic94xx_init.c @@ -84,6 +84,7 @@ static struct scsi_host_template aic94xx_sht = { .target_destroy = sas_target_destroy, .ioctl = sas_ioctl, .use_blk_tags = 1, + .track_queue_depth = 1, }; static int asd_map_memio(struct asd_ha_struct *asd_ha) diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c index 30d74a06b993..d9b999a3416f 100644 --- a/drivers/scsi/be2iscsi/be_main.c +++ b/drivers/scsi/be2iscsi/be_main.c @@ -570,7 +570,7 @@ static struct scsi_host_template beiscsi_sht = { .cmd_per_lun = BEISCSI_CMD_PER_LUN, .use_clustering = ENABLE_CLUSTERING, .vendor_id = SCSI_NL_VID_TYPE_PCI | BE_VENDOR_ID, - + .track_queue_depth = 1, }; static struct scsi_transport_template *beiscsi_scsi_transport; diff --git a/drivers/scsi/bnx2fc/bnx2fc_fcoe.c b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c index 2262c75f45d8..cc537972f3ea 100644 --- a/drivers/scsi/bnx2fc/bnx2fc_fcoe.c +++ b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c @@ -2792,6 +2792,7 @@ static struct scsi_host_template bnx2fc_shost_template = { .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD, .max_sectors = 1024, .use_blk_tags = 1, + .track_queue_depth = 1, }; static struct libfc_function_template bnx2fc_libfc_fcn_templ = { diff --git a/drivers/scsi/bnx2i/bnx2i_iscsi.c b/drivers/scsi/bnx2i/bnx2i_iscsi.c index 7a36388822aa..9de1c20bb0f8 100644 --- a/drivers/scsi/bnx2i/bnx2i_iscsi.c +++ b/drivers/scsi/bnx2i/bnx2i_iscsi.c @@ -2268,6 +2268,7 @@ static struct scsi_host_template bnx2i_host_template = { .use_clustering = ENABLE_CLUSTERING, .sg_tablesize = ISCSI_MAX_BDS_PER_CMD, .shost_attrs = bnx2i_dev_attributes, + .track_queue_depth = 1, }; struct iscsi_transport bnx2i_iscsi_transport = { diff --git a/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c b/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c index 49692a1ac44a..99ea67dcdd2a 100644 --- a/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c +++ b/drivers/scsi/cxgbi/cxgb3i/cxgb3i.c @@ -96,6 +96,7 @@ static struct scsi_host_template cxgb3i_host_template = { .target_alloc = iscsi_target_alloc, .use_clustering = DISABLE_CLUSTERING, .this_id = -1, + .track_queue_depth = 1, }; static struct iscsi_transport cxgb3i_iscsi_transport = { diff --git a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c index 81bb3bd7909d..af86e8f57b84 100644 --- a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c +++ b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c @@ -99,6 +99,7 @@ static struct scsi_host_template cxgb4i_host_template = { .target_alloc = iscsi_target_alloc, .use_clustering = DISABLE_CLUSTERING, .this_id = -1, + .track_queue_depth = 1, }; static struct iscsi_transport cxgb4i_iscsi_transport = { diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c index a3eeb6842499..97229860398f 100644 --- a/drivers/scsi/fcoe/fcoe.c +++ b/drivers/scsi/fcoe/fcoe.c @@ -289,6 +289,7 @@ static struct scsi_host_template fcoe_shost_template = { .sg_tablesize = SG_ALL, .max_sectors = 0xffff, .use_blk_tags = 1, + .track_queue_depth = 1, }; /** diff --git a/drivers/scsi/fnic/fnic_main.c b/drivers/scsi/fnic/fnic_main.c index 1e5706ed9a40..86b496c8633d 100644 --- a/drivers/scsi/fnic/fnic_main.c +++ b/drivers/scsi/fnic/fnic_main.c @@ -120,6 +120,7 @@ static struct scsi_host_template fnic_host_template = { .max_sectors = 0xffff, .shost_attrs = fnic_attrs, .use_blk_tags = 1, + .track_queue_depth = 1, }; static void diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c index 147b80e07b00..381449d5be76 100644 --- a/drivers/scsi/ibmvscsi/ibmvfc.c +++ b/drivers/scsi/ibmvscsi/ibmvfc.c @@ -3103,6 +3103,7 @@ static struct scsi_host_template driver_template = { .use_clustering = ENABLE_CLUSTERING, .shost_attrs = ibmvfc_attrs, .use_blk_tags = 1, + .track_queue_depth = 1, }; /** diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c index 897562056018..a81e546595dd 100644 --- a/drivers/scsi/isci/init.c +++ b/drivers/scsi/isci/init.c @@ -173,6 +173,7 @@ static struct scsi_host_template isci_sht = { .ioctl = sas_ioctl, .shost_attrs = isci_host_attrs, .use_blk_tags = 1, + .track_queue_depth = 1, }; static struct sas_domain_function_template isci_transport_ops = { diff --git a/drivers/scsi/iscsi_tcp.c b/drivers/scsi/iscsi_tcp.c index 427af0f24b0f..a575d845b667 100644 --- a/drivers/scsi/iscsi_tcp.c +++ b/drivers/scsi/iscsi_tcp.c @@ -966,6 +966,7 @@ static struct scsi_host_template iscsi_sw_tcp_sht = { .target_alloc = iscsi_target_alloc, .proc_name = "iscsi_tcp", .this_id = -1, + .track_queue_depth = 1, }; static struct iscsi_transport iscsi_sw_tcp_transport = { diff --git a/drivers/scsi/libfc/fc_fcp.c b/drivers/scsi/libfc/fc_fcp.c index bf954ee050f8..0d2d024e77c5 100644 --- a/drivers/scsi/libfc/fc_fcp.c +++ b/drivers/scsi/libfc/fc_fcp.c @@ -2173,19 +2173,7 @@ EXPORT_SYMBOL(fc_slave_alloc); */ int fc_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason) { - switch (reason) { - case SCSI_QDEPTH_DEFAULT: - scsi_adjust_queue_depth(sdev, qdepth); - break; - case SCSI_QDEPTH_QFULL: - scsi_track_queue_full(sdev, qdepth); - break; - case SCSI_QDEPTH_RAMP_UP: - scsi_adjust_queue_depth(sdev, qdepth); - break; - default: - return -EOPNOTSUPP; - } + scsi_adjust_queue_depth(sdev, qdepth); return sdev->queue_depth; } EXPORT_SYMBOL(fc_change_queue_depth); diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c index d521624dedfb..79e977484ad5 100644 --- a/drivers/scsi/libiscsi.c +++ b/drivers/scsi/libiscsi.c @@ -1773,19 +1773,7 @@ EXPORT_SYMBOL_GPL(iscsi_queuecommand); int iscsi_change_queue_depth(struct scsi_device *sdev, int depth, int reason) { - switch (reason) { - case SCSI_QDEPTH_DEFAULT: - scsi_adjust_queue_depth(sdev, depth); - break; - case SCSI_QDEPTH_QFULL: - scsi_track_queue_full(sdev, depth); - break; - case SCSI_QDEPTH_RAMP_UP: - scsi_adjust_queue_depth(sdev, depth); - break; - default: - return -EOPNOTSUPP; - } + scsi_adjust_queue_depth(sdev, depth); return sdev->queue_depth; } EXPORT_SYMBOL_GPL(iscsi_change_queue_depth); diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c index 89e8b687a679..914e41165137 100644 --- a/drivers/scsi/libsas/sas_scsi_host.c +++ b/drivers/scsi/libsas/sas_scsi_host.c @@ -961,20 +961,9 @@ int sas_change_queue_depth(struct scsi_device *sdev, int depth, int reason) return __ata_change_queue_depth(dev->sata_dev.ap, sdev, depth, reason); - switch (reason) { - case SCSI_QDEPTH_DEFAULT: - case SCSI_QDEPTH_RAMP_UP: - if (!sdev->tagged_supported) - depth = 1; - scsi_adjust_queue_depth(sdev, depth); - break; - case SCSI_QDEPTH_QFULL: - scsi_track_queue_full(sdev, depth); - break; - default: - return -EOPNOTSUPP; - } - + if (!sdev->tagged_supported) + depth = 1; + scsi_adjust_queue_depth(sdev, depth); return depth; } diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c index 80351fff1a07..522854920369 100644 --- a/drivers/scsi/lpfc/lpfc_scsi.c +++ b/drivers/scsi/lpfc/lpfc_scsi.c @@ -255,26 +255,7 @@ lpfc_update_stats(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) static int lpfc_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason) { - struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; - - switch (reason) { - case SCSI_QDEPTH_DEFAULT: - /* change request from sysfs, fall through */ - case SCSI_QDEPTH_RAMP_UP: - scsi_adjust_queue_depth(sdev, qdepth); - break; - case SCSI_QDEPTH_QFULL: - if (scsi_track_queue_full(sdev, qdepth) == 0) - return sdev->queue_depth; - - lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, - "0711 detected queue full - lun queue " - "depth adjusted to %d.\n", sdev->queue_depth); - break; - default: - return -EOPNOTSUPP; - } - + scsi_adjust_queue_depth(sdev, qdepth); return sdev->queue_depth; } @@ -5918,6 +5899,7 @@ struct scsi_host_template lpfc_template = { .change_queue_depth = lpfc_change_queue_depth, .change_queue_type = scsi_change_queue_type, .use_blk_tags = 1, + .track_queue_depth = 1, }; struct scsi_host_template lpfc_vport_template = { @@ -5942,4 +5924,5 @@ struct scsi_host_template lpfc_vport_template = { .change_queue_depth = lpfc_change_queue_depth, .change_queue_type = scsi_change_queue_type, .use_blk_tags = 1, + .track_queue_depth = 1, }; diff --git a/drivers/scsi/mpt2sas/mpt2sas_scsih.c b/drivers/scsi/mpt2sas/mpt2sas_scsih.c index 42fef914d441..b006e1e9fcb8 100644 --- a/drivers/scsi/mpt2sas/mpt2sas_scsih.c +++ b/drivers/scsi/mpt2sas/mpt2sas_scsih.c @@ -1229,7 +1229,7 @@ _scsih_adjust_queue_depth(struct scsi_device *sdev, int qdepth) * _scsih_change_queue_depth - setting device queue depth * @sdev: scsi device struct * @qdepth: requested queue depth - * @reason: SCSI_QDEPTH_DEFAULT/SCSI_QDEPTH_QFULL/SCSI_QDEPTH_RAMP_UP + * @reason: SCSI_QDEPTH_DEFAULT * (see include/scsi/scsi_host.h for definition) * * Returns queue depth. @@ -1237,12 +1237,7 @@ _scsih_adjust_queue_depth(struct scsi_device *sdev, int qdepth) static int _scsih_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason) { - if (reason == SCSI_QDEPTH_DEFAULT || reason == SCSI_QDEPTH_RAMP_UP) - _scsih_adjust_queue_depth(sdev, qdepth); - else if (reason == SCSI_QDEPTH_QFULL) - scsi_track_queue_full(sdev, qdepth); - else - return -EOPNOTSUPP; + _scsih_adjust_queue_depth(sdev, qdepth); if (sdev->inquiry_len > 7) sdev_printk(KERN_INFO, sdev, "qdepth(%d), tagged(%d), " @@ -7637,6 +7632,7 @@ static struct scsi_host_template scsih_driver_template = { .use_clustering = ENABLE_CLUSTERING, .shost_attrs = mpt2sas_host_attrs, .sdev_attrs = mpt2sas_dev_attrs, + .track_queue_depth = 1, }; /** diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c index b23c2e7588e5..568dcaed36cb 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c +++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c @@ -1097,7 +1097,7 @@ _scsih_adjust_queue_depth(struct scsi_device *sdev, int qdepth) * _scsih_change_queue_depth - setting device queue depth * @sdev: scsi device struct * @qdepth: requested queue depth - * @reason: SCSI_QDEPTH_DEFAULT/SCSI_QDEPTH_QFULL/SCSI_QDEPTH_RAMP_UP + * @reason: SCSI_QDEPTH_DEFAULT * (see include/scsi/scsi_host.h for definition) * * Returns queue depth. @@ -1105,12 +1105,7 @@ _scsih_adjust_queue_depth(struct scsi_device *sdev, int qdepth) static int _scsih_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason) { - if (reason == SCSI_QDEPTH_DEFAULT || reason == SCSI_QDEPTH_RAMP_UP) - _scsih_adjust_queue_depth(sdev, qdepth); - else if (reason == SCSI_QDEPTH_QFULL) - scsi_track_queue_full(sdev, qdepth); - else - return -EOPNOTSUPP; + _scsih_adjust_queue_depth(sdev, qdepth); if (sdev->inquiry_len > 7) sdev_printk(KERN_INFO, sdev, "qdepth(%d), tagged(%d), " \ @@ -7266,6 +7261,7 @@ static struct scsi_host_template scsih_driver_template = { .use_clustering = ENABLE_CLUSTERING, .shost_attrs = mpt3sas_host_attrs, .sdev_attrs = mpt3sas_dev_attrs, + .track_queue_depth = 1, }; /** diff --git a/drivers/scsi/mvsas/mv_init.c b/drivers/scsi/mvsas/mv_init.c index d3c1fa5e76fb..ac7c03078409 100644 --- a/drivers/scsi/mvsas/mv_init.c +++ b/drivers/scsi/mvsas/mv_init.c @@ -77,6 +77,7 @@ static struct scsi_host_template mvs_sht = { .ioctl = sas_ioctl, .shost_attrs = mvst_host_attrs, .use_blk_tags = 1, + .track_queue_depth = 1, }; static struct sas_domain_function_template mvs_transport_ops = { diff --git a/drivers/scsi/pm8001/pm8001_init.c b/drivers/scsi/pm8001/pm8001_init.c index 3ff759a3b74d..19ae6cab5e44 100644 --- a/drivers/scsi/pm8001/pm8001_init.c +++ b/drivers/scsi/pm8001/pm8001_init.c @@ -90,6 +90,7 @@ static struct scsi_host_template pm8001_sht = { .ioctl = sas_ioctl, .shost_attrs = pm8001_host_attrs, .use_blk_tags = 1, + .track_queue_depth = 1, }; /** diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index 33166ebec7d8..20049b176b64 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -270,6 +270,7 @@ struct scsi_host_template qla2xxx_driver_template = { .supported_mode = MODE_INITIATOR, .use_blk_tags = 1, + .track_queue_depth = 1, }; static struct scsi_transport_template *qla2xxx_transport_template = NULL; @@ -1415,55 +1416,10 @@ qla2xxx_slave_destroy(struct scsi_device *sdev) sdev->hostdata = NULL; } -static void qla2x00_handle_queue_full(struct scsi_device *sdev, int qdepth) -{ - fc_port_t *fcport = (struct fc_port *) sdev->hostdata; - - if (!scsi_track_queue_full(sdev, qdepth)) - return; - - ql_dbg(ql_dbg_io, fcport->vha, 0x3029, - "Queue depth adjusted-down to %d for nexus=%ld:%d:%llu.\n", - sdev->queue_depth, fcport->vha->host_no, sdev->id, sdev->lun); -} - -static void qla2x00_adjust_sdev_qdepth_up(struct scsi_device *sdev, int qdepth) -{ - fc_port_t *fcport = sdev->hostdata; - struct scsi_qla_host *vha = fcport->vha; - struct req_que *req = NULL; - - req = vha->req; - if (!req) - return; - - if (req->max_q_depth <= sdev->queue_depth || req->max_q_depth < qdepth) - return; - - scsi_adjust_queue_depth(sdev, qdepth); - - ql_dbg(ql_dbg_io, vha, 0x302a, - "Queue depth adjusted-up to %d for nexus=%ld:%d:%llu.\n", - sdev->queue_depth, fcport->vha->host_no, sdev->id, sdev->lun); -} - static int qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason) { - switch (reason) { - case SCSI_QDEPTH_DEFAULT: - scsi_adjust_queue_depth(sdev, qdepth); - break; - case SCSI_QDEPTH_QFULL: - qla2x00_handle_queue_full(sdev, qdepth); - break; - case SCSI_QDEPTH_RAMP_UP: - qla2x00_adjust_sdev_qdepth_up(sdev, qdepth); - break; - default: - return -EOPNOTSUPP; - } - + scsi_adjust_queue_depth(sdev, qdepth); return sdev->queue_depth; } diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c index f8724f2e0158..2bfde373ea2b 100644 --- a/drivers/scsi/qla4xxx/ql4_os.c +++ b/drivers/scsi/qla4xxx/ql4_os.c @@ -164,8 +164,6 @@ static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd); static int qla4xxx_slave_alloc(struct scsi_device *device); static umode_t qla4_attr_is_visible(int param_type, int param); static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type); -static int qla4xxx_change_queue_depth(struct scsi_device *sdev, int qdepth, - int reason); /* * iSCSI Flash DDB sysfs entry points @@ -203,7 +201,7 @@ static struct scsi_host_template qla4xxx_driver_template = { .eh_timed_out = qla4xxx_eh_cmd_timed_out, .slave_alloc = qla4xxx_slave_alloc, - .change_queue_depth = qla4xxx_change_queue_depth, + .change_queue_depth = iscsi_change_queue_depth, .this_id = -1, .cmd_per_lun = 3, @@ -9065,15 +9063,6 @@ static int qla4xxx_slave_alloc(struct scsi_device *sdev) return 0; } -static int qla4xxx_change_queue_depth(struct scsi_device *sdev, int qdepth, - int reason) -{ - if (!ql4xqfulltracking) - return -EOPNOTSUPP; - - return iscsi_change_queue_depth(sdev, qdepth, reason); -} - /** * qla4xxx_del_from_active_array - returns an active srb * @ha: Pointer to host adapter structure. @@ -9873,6 +9862,9 @@ static int __init qla4xxx_module_init(void) { int ret; + if (ql4xqfulltracking) + qla4xxx_driver_template.track_queue_depth = 1; + /* Allocate cache for SRBs. */ srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0, SLAB_HWCACHE_ALIGN, NULL); diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index fce393f3e7e0..84cf82e0782d 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -4472,7 +4472,6 @@ static int sdebug_change_qdepth(struct scsi_device *sdev, int qdepth, int reason) { int num_in_q = 0; - int bad = 0; unsigned long iflags; struct sdebug_dev_info *devip; @@ -4484,43 +4483,18 @@ sdebug_change_qdepth(struct scsi_device *sdev, int qdepth, int reason) } num_in_q = atomic_read(&devip->num_in_q); spin_unlock_irqrestore(&queued_arr_lock, iflags); - if (reason == SCSI_QDEPTH_DEFAULT || reason == SCSI_QDEPTH_RAMP_UP) { - if (qdepth < 1) - qdepth = 1; - /* allow to exceed max host queued_arr elements for testing */ - if (qdepth > SCSI_DEBUG_CANQUEUE + 10) - qdepth = SCSI_DEBUG_CANQUEUE + 10; - scsi_adjust_queue_depth(sdev, qdepth); - } else if (reason == SCSI_QDEPTH_QFULL) - scsi_track_queue_full(sdev, qdepth); - else - bad = 1; - if (bad) - sdev_printk(KERN_WARNING, sdev, - "%s: unknown reason=0x%x\n", __func__, reason); + + if (qdepth < 1) + qdepth = 1; + /* allow to exceed max host queued_arr elements for testing */ + if (qdepth > SCSI_DEBUG_CANQUEUE + 10) + qdepth = SCSI_DEBUG_CANQUEUE + 10; + scsi_adjust_queue_depth(sdev, qdepth); + if (SCSI_DEBUG_OPT_Q_NOISE & scsi_debug_opts) { - if (SCSI_QDEPTH_QFULL == reason) - sdev_printk(KERN_INFO, sdev, - "%s: -> %d, num_in_q=%d, reason: queue full\n", - __func__, qdepth, num_in_q); - else { - const char *cp; - - switch (reason) { - case SCSI_QDEPTH_DEFAULT: - cp = "default (sysfs ?)"; - break; - case SCSI_QDEPTH_RAMP_UP: - cp = "ramp up"; - break; - default: - cp = "unknown"; - break; - } - sdev_printk(KERN_INFO, sdev, - "%s: qdepth=%d, num_in_q=%d, reason: %s\n", - __func__, qdepth, num_in_q, cp); - } + sdev_printk(KERN_INFO, sdev, + "%s: qdepth=%d, num_in_q=%d\n", + __func__, qdepth, num_in_q); } return sdev->queue_depth; } @@ -4576,6 +4550,7 @@ static struct scsi_host_template sdebug_driver_template = { .max_sectors = -1U, .use_clustering = DISABLE_CLUSTERING, .module = THIS_MODULE, + .track_queue_depth = 1, }; static int sdebug_driver_probe(struct device * dev) diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index a6f6b9222b51..2d0f5155ee51 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -610,7 +610,7 @@ static void scsi_handle_queue_ramp_up(struct scsi_device *sdev) struct scsi_host_template *sht = sdev->host->hostt; struct scsi_device *tmp_sdev; - if (!sht->change_queue_depth || + if (!sht->track_queue_depth || sdev->queue_depth >= sdev->max_queue_depth) return; @@ -631,12 +631,8 @@ static void scsi_handle_queue_ramp_up(struct scsi_device *sdev) tmp_sdev->id != sdev->id || tmp_sdev->queue_depth == sdev->max_queue_depth) continue; - /* - * call back into LLD to increase queue_depth by one - * with ramp up reason code. - */ - sht->change_queue_depth(tmp_sdev, tmp_sdev->queue_depth + 1, - SCSI_QDEPTH_RAMP_UP); + + scsi_adjust_queue_depth(tmp_sdev, tmp_sdev->queue_depth + 1); sdev->last_queue_ramp_up = jiffies; } } @@ -646,7 +642,7 @@ static void scsi_handle_queue_full(struct scsi_device *sdev) struct scsi_host_template *sht = sdev->host->hostt; struct scsi_device *tmp_sdev; - if (!sht->change_queue_depth) + if (!sht->track_queue_depth) return; shost_for_each_device(tmp_sdev, sdev->host) { @@ -658,8 +654,7 @@ static void scsi_handle_queue_full(struct scsi_device *sdev) * the device when we got the queue full so we start * from the highest possible value and work our way down. */ - sht->change_queue_depth(tmp_sdev, tmp_sdev->queue_depth - 1, - SCSI_QDEPTH_QFULL); + scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1); } } diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 362b818ad827..e96ab253e3e5 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -2800,18 +2800,7 @@ static int ufshcd_change_queue_depth(struct scsi_device *sdev, if (depth > hba->nutrs) depth = hba->nutrs; - switch (reason) { - case SCSI_QDEPTH_DEFAULT: - case SCSI_QDEPTH_RAMP_UP: - scsi_adjust_queue_depth(sdev, depth); - break; - case SCSI_QDEPTH_QFULL: - scsi_track_queue_full(sdev, depth); - break; - default: - return -EOPNOTSUPP; - } - + scsi_adjust_queue_depth(sdev, depth); return depth; } @@ -4231,6 +4220,7 @@ static struct scsi_host_template ufshcd_driver_template = { .can_queue = UFSHCD_CAN_QUEUE, .max_host_blocked = 1, .use_blk_tags = 1, + .track_queue_depth = 1, }; static int ufshcd_config_vreg_load(struct device *dev, struct ufs_vreg *vreg, diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c index 8e40347da0a8..0f7e4c7ff8c2 100644 --- a/drivers/scsi/virtio_scsi.c +++ b/drivers/scsi/virtio_scsi.c @@ -691,18 +691,7 @@ static int virtscsi_change_queue_depth(struct scsi_device *sdev, struct Scsi_Host *shost = sdev->host; int max_depth = shost->cmd_per_lun; - switch (reason) { - case SCSI_QDEPTH_QFULL: /* Drop qdepth in response to BUSY state */ - scsi_track_queue_full(sdev, qdepth); - break; - case SCSI_QDEPTH_RAMP_UP: /* Raise qdepth after BUSY state resolved */ - case SCSI_QDEPTH_DEFAULT: /* Manual change via sysfs */ - scsi_adjust_queue_depth(sdev, min(max_depth, qdepth)); - break; - default: - return -EOPNOTSUPP; - } - + scsi_adjust_queue_depth(sdev, min(max_depth, qdepth)); return sdev->queue_depth; } @@ -770,6 +759,7 @@ static struct scsi_host_template virtscsi_host_template_single = { .use_clustering = ENABLE_CLUSTERING, .target_alloc = virtscsi_target_alloc, .target_destroy = virtscsi_target_destroy, + .track_queue_depth = 1, }; static struct scsi_host_template virtscsi_host_template_multi = { @@ -788,6 +778,7 @@ static struct scsi_host_template virtscsi_host_template_multi = { .use_clustering = ENABLE_CLUSTERING, .target_alloc = virtscsi_target_alloc, .target_destroy = virtscsi_target_destroy, + .track_queue_depth = 1, }; #define virtscsi_config_get(vdev, fld) \ diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c index 0ed96644ec94..670b75a62243 100644 --- a/drivers/target/loopback/tcm_loop.c +++ b/drivers/target/loopback/tcm_loop.c @@ -119,19 +119,7 @@ static int tcm_loop_change_queue_depth( int depth, int reason) { - switch (reason) { - case SCSI_QDEPTH_DEFAULT: - scsi_adjust_queue_depth(sdev, depth); - break; - case SCSI_QDEPTH_QFULL: - scsi_track_queue_full(sdev, depth); - break; - case SCSI_QDEPTH_RAMP_UP: - scsi_adjust_queue_depth(sdev, depth); - break; - default: - return -EOPNOTSUPP; - } + scsi_adjust_queue_depth(sdev, depth); return sdev->queue_depth; } @@ -423,6 +411,7 @@ static struct scsi_host_template tcm_loop_driver_template = { .slave_alloc = tcm_loop_slave_alloc, .module = THIS_MODULE, .use_blk_tags = 1, + .track_queue_depth = 1, }; static int tcm_loop_driver_probe(struct device *dev) diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h index 61a81bf77e28..a0b13a5cd25e 100644 --- a/include/scsi/scsi_host.h +++ b/include/scsi/scsi_host.h @@ -48,8 +48,6 @@ struct blk_queue_tags; enum { SCSI_QDEPTH_DEFAULT, /* default requested change, e.g. from sysfs */ - SCSI_QDEPTH_QFULL, /* scsi-ml requested due to queue full */ - SCSI_QDEPTH_RAMP_UP, /* scsi-ml requested due to threshold event */ }; struct scsi_host_template { @@ -426,6 +424,11 @@ struct scsi_host_template { */ unsigned use_blk_tags:1; + /* + * Track QUEUE_FULL events and reduce queue depth on demand. + */ + unsigned track_queue_depth:1; + /* * This specifies the mode that a LLD supports. */ -- cgit v1.2.1