Messages in this thread | | | Date | Fri, 20 Mar 2009 21:46:39 -0500 | From | "Serge E. Hallyn" <> | Subject | Re: [PATCH 1/1] introduce user_ns inheritance in user-sched |
| |
Quoting Peter Zijlstra (peterz@infradead.org): > On Thu, 2009-03-19 at 16:16 -0500, Serge E. Hallyn wrote: > > In a kernel compiled with CONFIG_USER_SCHED=y, cpu shares are > > allocated according to uid. Shares are specifiable under > > /sys/kernel/uids/<uid>/ > > > > In a kernel compiled with CONFIG_USER_NS=y, clone(2) with the > > CLONE_NEWUSER flag creates a new user namespace, and the newly > > cloned task will belong to uid 0 in the new user namespace. > > We seem to be adding more and more stuff for USER_SCHED, is anybody > actually using that cruft? > > How far along with cgroups are we to fully simulate that behaviour? > > I think if we have a capable cgroup based replacement for USER_SCHED we > should axe it from the kernel, would save lots of code...
I didn't realize that was the plan. Using PAM to move users around cgroups? If so, then yeah that would simplify quite a bit of code. Won't catch all setuid()s of course - I don't know who uses USER_SCHED and if that would matter.
-serge
| |