On Wed, Mar 12, 2025 at 03:25:52PM -0700, Shakeel Butt wrote: > The do_memsw_account() is used to enable or disable legacy memory+swap > accounting in memory cgroup. However with disabled CONFIG_MEMCG_V1, we > don't need to keep checking it. So, let's always return false for > !CONFIG_MEMCG_V1 configs. > > Before the patch: > > $ size mm/memcontrol.o > text data bss dec hex filename > 49928 10736 4172 64836 fd44 mm/memcontrol.o > > After the patch: > > $ size mm/memcontrol.o > text data bss dec hex filename > 49430 10480 4172 64082 fa52 mm/memcontrol.o > > Signed-off-by: Shakeel Butt <shakeel.butt@xxxxxxxxx> Nice. It being a jump label avoids the branch, but it's still unnecessary text and therefor i$ burden on fairly hot paths. Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>
