Le 03/05/2022 à 01:52, Steven Rostedt a écrit : > On Mon, 2 May 2022 14:44:56 +0000 > Christophe Leroy <christophe.le...@csgroup.eu> wrote: > >> If we do that after the linking, won't it be a nightmare with the >> trampolines installed by the linker when the destination is over the 24 >> bits limit ? > > Not sure what you mean. The locations I'm talking about is the full > address saved in the __mcount_loc table (data section). >
Maybe I misunderstood. When you say 'after linking', do you mean vmlinux or vmlinux.o ? In vmlinux, the addresses to be saved in __mcount_loc table might not contain anymore a call to _mcount but a call to a trampoline that jumps to _mcount, in case _mcount is too far from the said location at link time. That's what I meant. Christophe
