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/scsi/scsi_error.c | 15 +++++---------- 1 file changed, 5 insertions(+), 10 deletions(-) (limited to 'drivers/scsi/scsi_error.c') diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index a6f6b92..2d0f515 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); } } -- cgit v1.1