From: "Kevin Jia" <jiaminghao@gmail.com>
To: systemtap@sourceware.org
Subject: help-inode-watch error
Date: Thu, 30 Mar 2006 11:31:00 -0000 [thread overview]
Message-ID: <30c154100603300331n50a03a3dyd1c9ea7a39b4a3df@mail.gmail.com> (raw)
inode-watch.stp (in systemtap tutorial) source code:
probe kernel.function ("vfs_write"),
kernel.function ("vfs_read")
{
dev_nr = $file->f_dentry->d_inode->i_sb->s_dev
inode_nr = $file->f_dentry->d_inode->i_ino
if (dev_nr == ($1 << 20 | $2) && inode_nr == $3)
printf ("%s(%d) %s 0x%x/%u\n",
execname(), pid(), probefunc(), dev_nr, inode_nr)
}
but have errors about $1,$2,$3, the information:
semantic error: unable to find local '1' near pc 0xc015b304:
identifier '$1' at inode-watch.stp:7:17
semantic error: unable to find local '2' near pc 0xc015b304:
identifier '$2' at inode-watch.stp:7:28
semantic error: unable to find local '3' near pc 0xc015b304:
identifier '$3' at inode-watch.stp:7:47
semantic error: due to failed target variable resolution
semantic error: no match for probe point
while: resolving probe point kernel.function("vfs_write")
semantic error: unable to find local '1' near pc 0xc015b096:
identifier '$1' at inode-watch.stp:7:17
semantic error: unable to find local '2' near pc 0xc015b096:
identifier '$2' at inode-watch.stp:7:28
semantic error: unable to find local '3' near pc 0xc015b096:
identifier '$3' at inode-watch.stp:7:47
semantic error: due to failed target variable resolution
semantic error: no match for probe point
while: resolving probe point kernel.function("vfs_read")
Pass 2: analysis failed. Try again with '-v' (verbose) option.
Why? Thank you.
next reply other threads:[~2006-03-30 11:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-30 11:31 Kevin Jia [this message]
2006-03-30 14:48 ` William Cohen
[not found] ` <30c154100603301724u4a967b8bgab10156c5d4befca@mail.gmail.com>
2006-03-31 3:45 ` William Cohen
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