Bummer, sendmail ate the major portion of my take msg...
-Ted
Date: Fri, 21 Apr 2000 22:35:12 -0500 (CDT)
To: slinx-xfs@xxxxxxxxxxxxxxxxxxxx, linux-xfs@xxxxxxxxxxx
Subject: TAKE - Implement vnode tracing.
Sender: owner-slinx-xfs@xxxxxxxxxxxxxxxxxxxx
Precedence: bulk
Implement an optional (via config) vnode tracing functionality..
Run your favorite form of make config/oldconfig/xconfig and select
"CONFIG_XFS_VNODE_TRACING" under XFS in the filesystem section.
i.e.:
[1]kdb> vnode 0xc2b58008
vnode: 0xc2b58008 v_count 2 type VDIR
v_inode 0xc27b7700 v_bh->bh_first 0xc275c268 pobj 0xc275c250
ops xfs_vnodeops
v_trace 0xc3fa0920
-later-
[0]kdb> vntrace 0xc2b58008
vntrace vp 0xc2b58008
hold @xfs_vfsops.c:1396 v_count 1 => 2 ra = linvfs_read_super+0x1c4
cpu = 1 pid = 1350 flag = 0x4100000 <VROOT VSHARE >
entry to xfs_getattr v_count = 2 ra = linvfs_read_super+0x1ff
cpu = 1 pid = 1350 flag = 0x4100000 <VROOT VSHARE >
entry to xfs_getattr v_count = 2 ra = linvfs_revalidate+0x3a
cpu = 1 pid = 1350 flag = 0x4100000 <VROOT VSHARE >
rele @xfs_super.c:351 v_count 2 => 1 ra = iput+0x38
cpu = 1 pid = 1354 flag = 0x4100000 <VROOT VSHARE >
free @xfs_vfsops.c:1259 ra = fs_dounmount+0x90
cpu = 1 pid = 1354 flag = 0x4100000 <VROOT VSHARE >
entry to xfs_inactive v_count = 0 ra = vn_rele+0x13d
cpu = 1 pid = 1354 flag = 0x4100002 <VINACT VROOT VSHARE >
[0]kdb>
linux/fs/Config.in
- Add config tag for Vnode Tracing - CONFIG_XFS_VNODE_TRACING.
linux/fs/xfs/Makefile
linux/fs/xfs/linux/Makefile
- Close a large hole in the header dependency chain.
linux/fs/xfs/linux/xfs_random.c
- Correct #ifdef and fill out the ktrace() routines.
linux/fs/xfs/linux/xfs_vnode.c
- Allocate/free the v_trace buffer, fill out the vn_trace_*()
routines.
linux/fs/xfs/pseudo-inc/sys/ktrace.h
- Fill in missing pieces for the ktrace() routines.
linux/fs/xfs/pseudo-inc/sys/vnode.h
- Correct #ifdef'ing for vnode tracing and fill in missing
pieces.
linux/fs/xfs/xfsidbg.c
- Add some NULL deref protection to the kdb_vnode cmd.
Implement the kdb_vntrace cmd.
linux/include/asm-i386/kdbprivate.h
- Bump the max # of kdb commands from 100 to 125.
- End of mod 2.3.99pre2-xfs:slinx:59377a
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