ftrace_location
unsigned long ip = ftrace_location(addr);
faddr = ftrace_location(addr) == addr;
unsigned long ftrace_location(unsigned long ip);
ip = ftrace_location(tr->ip);
tr->ip = ftrace_location(ip);
faddr = ftrace_location((unsigned long)ip);
if (ftrace_location(addr) == addr) {
ftrace_loc = ftrace_location((unsigned long)func->old_func);
ftrace_loc = ftrace_location((unsigned long)func->old_func);
if (!ftrace_location(addr))
addr = ftrace_location(addrs[i]);
ip = ftrace_location(ip);
if (!ftrace_location(addr))
if (addrs[0] && ftrace_location(addrs[0]))