[DRBD-cvs] svn commit by phil - r2535 - trunk/drbd - A tracepoint to watch the unplug events.

[drbd-cvs at lists.linbit.com]

Author: phil
Date: 2006-10-16 17:58:00 +0200 (Mon, 16 Oct 2006)
New Revision: 2535

Modified:
   trunk/drbd/drbd_int.h
   trunk/drbd/drbd_main.c
Log:
A tracepoint to watch the unplug events.


Modified: trunk/drbd/drbd_int.h
===================================================================
--- trunk/drbd/drbd_int.h	2006-10-16 11:43:08 UTC (rev 2534)
+++ trunk/drbd/drbd_int.h	2006-10-16 15:58:00 UTC (rev 2535)
@@ -1178,6 +1178,7 @@
 	TraceTypeUuid	= 0x00000004,
 	TraceTypeResync = 0x00000008,
 	TraceTypeEE     = 0x00000010,
+	TraceTypeUnplug = 0x00000020,
 };
 
 static inline int

Modified: trunk/drbd/drbd_main.c
===================================================================
--- trunk/drbd/drbd_main.c	2006-10-16 11:43:08 UTC (rev 2534)
+++ trunk/drbd/drbd_main.c	2006-10-16 15:58:00 UTC (rev 2535)
@@ -1907,6 +1907,11 @@
 {
 	drbd_dev *mdev = q->queuedata;
 
+	MTRACE(TraceTypeUnplug,TraceLvlSummary,
+	       INFO("got unplugged ap_bio_count=%d\n",
+		    atomic_read(&mdev->ap_bio_cnt));
+	       );
+
 	/* unplug FIRST */
 	spin_lock_irq(q->queue_lock);
 	blk_remove_plug(q);