thread__find_symbol_fb
thread__find_symbol_fb(thread, sample->cpumode, from, &alf);
thread__find_symbol_fb(thread, sample->cpumode, to, &alt);
sym = thread__find_symbol_fb(dloc->thread, dloc->cpumode,
thread__find_symbol_fb(thread, d->sample->cpumode, address, &al);
thread__find_symbol_fb(thread, sample->cpumode,
thread__find_symbol_fb(thread, sample->cpumode,
struct symbol *thread__find_symbol_fb(struct thread *thread, u8 cpumode,