doc/SystemTap_Beginners_Guide/en-US/extras/traceio2-simple.stp


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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))
printf ("%s(%d) %s 0x%x\n", execname(), pid(), probefunc(), dev_nr)
}