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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) # major/minor device
&& inode_nr == $3)
printf ("%s(%d) %s 0x%x/%u\n",
execname(), pid(), probefunc(), dev_nr, inode_nr)
}
stap -p4 para-callgraph.stp sys_read '*@fs/*.c'
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