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Date:      Thu, 9 Feb 2012 07:45:02 +0000 (UTC)
From:      Alexander Motin <mav@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org
Subject:   svn commit: r231254 - in stable/8/sys/cam: ata scsi
Message-ID:  <201202090745.q197j28m088100@svn.freebsd.org>
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Author: mav
Date: Thu Feb  9 07:45:02 2012
New Revision: 231254
URL: http://svn.freebsd.org/changeset/base/231254

Log:
  MFC r230921:
  Insert ordered command every 1/4 of the current command timeout, not 1/4
  of the default one.
  
  Without this change setting kern.cam.ada.default_timeout to 1 instead of 30
  allowed me to trigger several false positive command timeouts under heavy
  ZFS load on a SiI3132 siis(4) controller with 5 HDDs on a port multiplier.

Modified:
  stable/8/sys/cam/ata/ata_da.c
  stable/8/sys/cam/scsi/scsi_da.c
Directory Properties:
  stable/8/sys/   (props changed)

Modified: stable/8/sys/cam/ata/ata_da.c
==============================================================================
--- stable/8/sys/cam/ata/ata_da.c	Thu Feb  9 07:43:38 2012	(r231253)
+++ stable/8/sys/cam/ata/ata_da.c	Thu Feb  9 07:45:02 2012	(r231254)
@@ -1032,7 +1032,7 @@ adaregister(struct cam_periph *periph, v
 	 */
 	callout_init_mtx(&softc->sendordered_c, periph->sim->mtx, 0);
 	callout_reset(&softc->sendordered_c,
-	    (ADA_DEFAULT_TIMEOUT * hz) / ADA_ORDEREDTAG_INTERVAL,
+	    (ada_default_timeout * hz) / ADA_ORDEREDTAG_INTERVAL,
 	    adasendorderedtag, softc);
 
 	if (ADA_RA >= 0 &&
@@ -1572,7 +1572,7 @@ adasendorderedtag(void *arg)
 	}
 	/* Queue us up again */
 	callout_reset(&softc->sendordered_c,
-	    (ADA_DEFAULT_TIMEOUT * hz) / ADA_ORDEREDTAG_INTERVAL,
+	    (ada_default_timeout * hz) / ADA_ORDEREDTAG_INTERVAL,
 	    adasendorderedtag, softc);
 }
 

Modified: stable/8/sys/cam/scsi/scsi_da.c
==============================================================================
--- stable/8/sys/cam/scsi/scsi_da.c	Thu Feb  9 07:43:38 2012	(r231253)
+++ stable/8/sys/cam/scsi/scsi_da.c	Thu Feb  9 07:45:02 2012	(r231254)
@@ -1095,7 +1095,7 @@ dadump(void *arg, void *virtual, vm_offs
 				/*data_ptr*/(u_int8_t *) virtual,
 				/*dxfer_len*/length,
 				/*sense_len*/SSD_FULL_SIZE,
-				DA_DEFAULT_TIMEOUT * 1000);		
+				da_default_timeout * 1000);
 		xpt_polled_action((union ccb *)&csio);
 
 		if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
@@ -1451,7 +1451,7 @@ daregister(struct cam_periph *periph, vo
 	 */
 	callout_init_mtx(&softc->sendordered_c, periph->sim->mtx, 0);
 	callout_reset(&softc->sendordered_c,
-	    (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
+	    (da_default_timeout * hz) / DA_ORDEREDTAG_INTERVAL,
 	    dasendorderedtag, softc);
 
 	mtx_unlock(periph->sim->mtx);
@@ -2299,7 +2299,7 @@ dasendorderedtag(void *arg)
 	}
 	/* Queue us up again */
 	callout_reset(&softc->sendordered_c,
-	    (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
+	    (da_default_timeout * hz) / DA_ORDEREDTAG_INTERVAL,
 	    dasendorderedtag, softc);
 }

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