On Tue, Jul 7, 2020 at 10:36 AM Roman Gushchin <guro@xxxxxx> wrote: > > Currently memcg_kmem_enabled() is optimized for the kernel memory > accounting being off. It was so for a long time, and arguably the > reason behind was that the kernel memory accounting was initially an > opt-in feature. However, now it's on by default on both cgroup v1 > and cgroup v2, and it's on for all cgroups. So let's switch over > to static_branch_likely() to reflect this fact. > > Unlikely there is a significant performance difference, as the cost > of a memory allocation and its accounting significantly exceeds the > cost of a jump. However, the conversion makes the code look more > logically. > > Signed-off-by: Roman Gushchin <guro@xxxxxx> Reviewed-by: Shakeel Butt <shakeelb@xxxxxxxxxx>
