Module Name: src
Committed By: jdolecek
Date: Tue Aug 1 21:41:26 UTC 2017
Modified Files:
src/sys/dev/ata [jdolecek-ncq]: ata.c
Log Message:
make atastart() schedule as many commands as possible, instead of always
only one; makes it able to pick up pace again after processing non-NCQ command
To generate a diff of this commit:
cvs rdiff -u -r1.132.8.23 -r1.132.8.24 src/sys/dev/ata/ata.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/dev/ata/ata.c
diff -u src/sys/dev/ata/ata.c:1.132.8.23 src/sys/dev/ata/ata.c:1.132.8.24
--- src/sys/dev/ata/ata.c:1.132.8.23 Tue Aug 1 21:39:51 2017
+++ src/sys/dev/ata/ata.c Tue Aug 1 21:41:25 2017
@@ -1,4 +1,4 @@
-/* $NetBSD: ata.c,v 1.132.8.23 2017/08/01 21:39:51 jdolecek Exp $ */
+/* $NetBSD: ata.c,v 1.132.8.24 2017/08/01 21:41:25 jdolecek Exp $ */
/*
* Copyright (c) 1998, 2001 Manuel Bouyer. All rights reserved.
@@ -25,7 +25,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ata.c,v 1.132.8.23 2017/08/01 21:39:51 jdolecek Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ata.c,v 1.132.8.24 2017/08/01 21:41:25 jdolecek Exp $");
#include "opt_ata.h"
@@ -1240,6 +1240,7 @@ atastart(struct ata_channel *chp)
splx(spl1);
#endif /* ATA_DEBUG */
+again:
mutex_enter(&chp->ch_lock);
KASSERT(chq->queue_active <= chq->queue_openings);
@@ -1318,6 +1319,11 @@ atastart(struct ata_channel *chp)
* routine for polled commands.
*/
xfer->c_start(chp, xfer);
+
+ /* Queue more commands if possible */
+ if (chq->queue_active < chq->queue_openings)
+ goto again;
+
return;
out:
