Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx> writes: > A few suggestions for reducing the footprint of pid namespaces when > CONFIG_PID_NS=n. The savings are admittedly not huge: > > $ scripts/bloat-o-meter /tmp/vmlinux.master vmlinux > add/remove: 0/7 grow/shrink: 30/25 up/down: 368/-1032 (-664) #ifdefs in C files. More code to maintain. Very minor savings. I don't think it is worth the pain. If anything I would prefer to remove CONFIG_PID_NS. The CONFIG_PID_NS ifdef really is about keeping from exposing people to the feature tha don't use it more than it is about size reduction. Or do you have a case where this makes the difference between a usable kernel and a kernel that is not? Eric > Rasmus Villemoes (4): > pid_namespace: remove ->level and ->parent for !CONFIG_PID_NS > pid_namespace: remove .kref field for !CONFIG_PID_NS > pid_namespace: make pid_nr_ns and pid_vnr static inlines for > !CONFIG_PID_NS > pid_namespace: disable_pid_allocation is unused for !CONFIG_PID_NS > > include/linux/pid.h | 11 +++++++++++ > include/linux/pid_namespace.h | 20 ++++++++++++++++++++ > kernel/acct.c | 4 ++-- > kernel/pid.c | 24 +++++++++++++++--------- > 4 files changed, 48 insertions(+), 11 deletions(-) _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/containers
