From 895dc759cf3996a56ca64e3e09cbea64e2a7ff62 Mon Sep 17 00:00:00 2001 From: Raghava Aditya Renukunta Date: Wed, 10 May 2017 09:39:41 -0700 Subject: [PATCH] scsi: aacraid: Log count info of scsi cmds before reset Log the location of the scsi cmds before triggering a reset. This information is useful for debugging. Signed-off-by: Raghava Aditya Renukunta Reviewed-by: David Carroll Signed-off-by: Martin K. Petersen --- drivers/scsi/aacraid/linit.c | 90 +++++++++++++++++++++--------------- 1 file changed, 53 insertions(+), 37 deletions(-) diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c index f6a11af0432b..0a8d303c8bc9 100644 --- a/drivers/scsi/aacraid/linit.c +++ b/drivers/scsi/aacraid/linit.c @@ -624,6 +624,56 @@ static int aac_ioctl(struct scsi_device *sdev, int cmd, void __user * arg) return aac_do_ioctl(dev, cmd, arg); } +static int get_num_of_incomplete_fibs(struct aac_dev *aac) +{ + + unsigned long flags; + struct scsi_device *sdev = NULL; + struct Scsi_Host *shost = aac->scsi_host_ptr; + struct scsi_cmnd *scmnd = NULL; + struct device *ctrl_dev; + + int mlcnt = 0; + int llcnt = 0; + int ehcnt = 0; + int fwcnt = 0; + int krlcnt = 0; + + __shost_for_each_device(sdev, shost) { + spin_lock_irqsave(&sdev->list_lock, flags); + list_for_each_entry(scmnd, &sdev->cmd_list, list) { + switch (scmnd->SCp.phase) { + case AAC_OWNER_FIRMWARE: + fwcnt++; + break; + case AAC_OWNER_ERROR_HANDLER: + ehcnt++; + break; + case AAC_OWNER_LOWLEVEL: + llcnt++; + break; + case AAC_OWNER_MIDLEVEL: + mlcnt++; + break; + default: + krlcnt++; + break; + } + } + spin_unlock_irqrestore(&sdev->list_lock, flags); + } + + ctrl_dev = &aac->pdev->dev; + + dev_info(ctrl_dev, "outstanding cmd: midlevel-%d\n", mlcnt); + dev_info(ctrl_dev, "outstanding cmd: lowlevel-%d\n", llcnt); + dev_info(ctrl_dev, "outstanding cmd: error handler-%d\n", ehcnt); + dev_info(ctrl_dev, "outstanding cmd: firmware-%d\n", fwcnt); + dev_info(ctrl_dev, "outstanding cmd: kernel-%d\n", krlcnt); + + return mlcnt + llcnt + ehcnt + fwcnt; +} + static int aac_eh_abort(struct scsi_cmnd* cmd) { struct scsi_device * dev = cmd->device; @@ -853,8 +903,6 @@ static int aac_eh_reset(struct scsi_cmnd* cmd) pr_err("%s: Host adapter reset request timed out\n", AAC_DRIVERNAME); } else { - struct scsi_cmnd *command; - unsigned long flags; /* Mark the assoc. FIB to not complete, eh handler does this */ for (count = 0; @@ -873,41 +921,9 @@ static int aac_eh_reset(struct scsi_cmnd* cmd) pr_err("%s: Host adapter reset request. SCSI hang ?\n", AAC_DRIVERNAME); - count = aac_check_health(aac); - if (count) - return count; - /* - * Wait for all commands to complete to this specific - * target (block maximum 60 seconds). - */ - for (count = 60; count; --count) { - int active = aac->in_reset; - - if (active == 0) - __shost_for_each_device(dev, host) { - spin_lock_irqsave(&dev->list_lock, flags); - list_for_each_entry(command, &dev->cmd_list, - list) { - if ((command != cmd) && - (command->SCp.phase == - AAC_OWNER_FIRMWARE)) { - active++; - break; - } - } - spin_unlock_irqrestore(&dev->list_lock, flags); - if (active) - break; - - } - /* - * We can exit If all the commands are complete - */ - if (active == 0) - return SUCCESS; - ssleep(1); - } - pr_err("%s: SCSI bus appears hung\n", AAC_DRIVERNAME); + count = get_num_of_incomplete_fibs(aac); + if (count == 0) + return SUCCESS; /* * This adapter needs a blind reset, only do so for -- 2.20.1