Messages in this thread | | | Subject | Re: [PATCH 4/4] nohz: Set isolcpus when nohz_full is set | From | Mike Galbraith <> | Date | Mon, 18 May 2015 05:29:16 +0200 |
| |
On Sun, 2015-05-17 at 22:17 -0400, Rik van Riel wrote: > On 05/17/2015 01:30 AM, Mike Galbraith wrote: > > > Given that kernel initiated association to isolcpus, a user turning > > NO_HZ_FULL_ALL on had better not have much generic load to manage. If > > he/she does not have CPUSETS enabled, or should Rik's patch rendering > > isolcpus immutable be merged, > > My patch does not aim to make isolcpus immutable, it aims to make > isolcpus resistent to system management tools (like libvirt) > automatically undoing isolcpus the instant a cpuset with the default > cpus (inherited from the root group) is created.
Aim or not, if cpusets is the sole modifier, it'll render isolcpus immutable, no? Cpusets could grow an override to the override I suppose, to regain control of the resource it thinks it manages.
-Mike
| |