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Groups > linux.kernel > #1571337
| From | Michal Hocko <mhocko@kernel.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [RFC] cpuset: Enable changing of top_cpuset's mems_allowed nodemask |
| Date | 2017-02-01 10:00 +0100 |
| Message-ID | <t5YVI-3Cf-17@gated-at.bofh.it> (permalink) |
| References | <t5r3I-8h-5@gated-at.bofh.it> <t5HBw-1Ll-13@gated-at.bofh.it> <t5Jaj-2Mv-33@gated-at.bofh.it> <t5XGi-2WB-15@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Wed 01-02-17 13:01:24, Anshuman Khandual wrote: [...] > More importantly it also extends the cpuset memory restriction feature > to the logical completion without adding any regressions for the > existing use cases. Then why not do this ? Does it add any overhead ? Maybe it doesn't add any overhead but it just breaks the cgroups expectation that the root cgroup covers the full resource set. No cgroup controller allows to set limits on the root cgroup. So all this looks like an abuse of the interface. I haven't read the full series yet but this particular change looks like a nogo to me. -- Michal Hocko SUSE Labs
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Re: [RFC V2 05/12] cpuset: Add cpuset_inc() inside cpuset_init() Mel Gorman <mgorman@suse.de> - 2017-01-30 21:50 +0100
[RFC] cpuset: Enable changing of top_cpuset's mems_allowed nodemask Anshuman Khandual <khandual@linux.vnet.ibm.com> - 2017-01-31 15:30 +0100
Re: [RFC] cpuset: Enable changing of top_cpuset's mems_allowed nodemask Mel Gorman <mgorman@suse.de> - 2017-01-31 17:10 +0100
Re: [RFC] cpuset: Enable changing of top_cpuset's mems_allowed nodemask Anshuman Khandual <khandual@linux.vnet.ibm.com> - 2017-02-01 08:40 +0100
Re: [RFC] cpuset: Enable changing of top_cpuset's mems_allowed nodemask Michal Hocko <mhocko@kernel.org> - 2017-02-01 10:00 +0100
Re: [RFC] cpuset: Enable changing of top_cpuset's mems_allowed nodemask Mel Gorman <mgorman@suse.de> - 2017-02-01 10:20 +0100
Re: [RFC V2 05/12] cpuset: Add cpuset_inc() inside cpuset_init() Vlastimil Babka <vbabka@suse.cz> - 2017-01-31 15:40 +0100
Re: [RFC V2 05/12] cpuset: Add cpuset_inc() inside cpuset_init() Anshuman Khandual <khandual@linux.vnet.ibm.com> - 2017-01-31 16:40 +0100
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