[src/trunk]: src/sys/kern When logging a history record for biowait(), includ...

[pgoyette <pgoyette%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/de9856445c03
branches:  trunk
changeset: 353826:de9856445c03
user:      pgoyette <pgoyette%NetBSD.org@localhost>
date:      Thu May 25 02:28:07 2017 +0000

description:
When logging a history record for biowait(), include the return address
as a parameter, to identify to which of the many calls to biowait() the
record refers.

diffstat:

 sys/kern/vfs_bio.c |  8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diffs (29 lines):

diff -r 3ddcc6a813c2 -r de9856445c03 sys/kern/vfs_bio.c
--- a/sys/kern/vfs_bio.c        Thu May 25 00:12:34 2017 +0000
+++ b/sys/kern/vfs_bio.c        Thu May 25 02:28:07 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: vfs_bio.c,v 1.272 2017/04/05 20:15:49 jdolecek Exp $   */
+/*     $NetBSD: vfs_bio.c,v 1.273 2017/05/25 02:28:07 pgoyette Exp $   */
 
 /*-
  * Copyright (c) 2007, 2008, 2009 The NetBSD Foundation, Inc.
@@ -123,7 +123,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vfs_bio.c,v 1.272 2017/04/05 20:15:49 jdolecek Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vfs_bio.c,v 1.273 2017/05/25 02:28:07 pgoyette Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_bufcache.h"
@@ -1530,8 +1530,8 @@
 
        mutex_enter(bp->b_objlock);
 
-       BIOHIST_CALLARGS(biohist, "bp=%p, oflags=0x%x",
-           bp, bp->b_oflags, 0, 0);
+       BIOHIST_CALLARGS(biohist, "bp=%p, oflags=0x%x, ret_addr %p",
+           bp, bp->b_oflags, __builtin_return_address(0), 0);
 
        while (!ISSET(bp->b_oflags, BO_DONE | BO_DELWRI)) {
                BIOHIST_LOG(biohist, "waiting bp=%p", bp, 0, 0, 0);