2011/4/27 İsmail Baydan <[email protected]>: > Currently I am trying to learn linux kernel while looking around I saw that > a lot of function likes macros are defined.What is the adventage of macros > over functions. If the size of the function is very small, then the macro is better when compared to function. The macros are replaced at the time of preprocessing. However, if there is a function, then there may be overhead in calling the function. When there is a call, the return address needs to be stored on the stack. This makes some overhead. So, if the size of a fucction is big, then define it as function otherwise make it as a macro.
I guess, this helps you a bit. Regards, Ramya. > Thanks > > -- > İsmail Baydan > > _______________________________________________ > Kernelnewbies mailing list > [email protected] > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > _______________________________________________ Kernelnewbies mailing list [email protected] http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
