what are all the .cold symbols in system.map?

[jim.cromie at gmail.com]

Ive been seeing these in my backtraces
they seem to come in both .cold and not cold flavors
are they related to unlikely() code blocks ?


ffffffff81001820 t calibrate_delay_direct
ffffffff81001a90 t calibrate_delay_converge
ffffffff81001bb0 W calibration_delay_done
ffffffff81001bc0 T calibrate_delay
ffffffff81001cc3 t calibrate_delay_direct.cold
ffffffff81001df7 t calibrate_delay.cold