• Aneesh Kumar K.V's avatar
    mm/hugetlb: add new HugeTLB cgroup · 2bc64a20
    Aneesh Kumar K.V authored
    Implement a new controller that allows us to control HugeTLB allocations.
    The extension allows to limit the HugeTLB usage per control group and
    enforces the controller limit during page fault.  Since HugeTLB doesn't
    support page reclaim, enforcing the limit at page fault time implies that,
    the application will get SIGBUS signal if it tries to access HugeTLB pages
    beyond its limit.  This requires the application to know beforehand how
    much HugeTLB pages it would require for its use.
    The charge/uncharge calls will be added to HugeTLB code in later patch.
    Support for cgroup removal will be added in later patches.
    [akpm@linux-foundation.org: s/CONFIG_CGROUP_HUGETLB_RES_CTLR/CONFIG_MEMCG_HUGETLB/g]
    [akpm@linux-foundation.org: s/CONFIG_MEMCG_HUGETLB/CONFIG_CGROUP_HUGETLB/g]
    Reviewed-by: default avatarKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
    Signed-off-by: default avatarAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
    Cc: David Rientjes <rientjes@google.com>
    Cc: Hillf Danton <dhillf@gmail.com>
    Reviewed-by: default avatarMichal Hocko <mhocko@suse.cz>
    Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
Makefile 1.91 KB