19 Dec, 2012
1 commit
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Build kernel with CONFIG_HUGETLBFS=y,CONFIG_HUGETLB_PAGE=y and
CONFIG_CGROUP_HUGETLB=y, then specify hugepagesz=xx boot option, system
will fail to boot.This failure is caused by following code path:
setup_hugepagesz
hugetlb_add_hstate
hugetlb_cgroup_file_init
cgroup_add_cftypes
kzalloc
Signed-off-by: Jiang Liu
Reviewed-by: Aneesh Kumar K.V
Acked-by: Michal Hocko
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
01 Aug, 2012
5 commits
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With HugeTLB pages, hugetlb cgroup is uncharged in compound page
destructor. Since we are holding a hugepage reference, we can be sure
that old page won't get uncharged till the last put_page().Signed-off-by: Aneesh Kumar K.V
Cc: David Rientjes
Acked-by: KAMEZAWA Hiroyuki
Cc: Hillf Danton
Cc: Michal Hocko
Cc: KOSAKI Motohiro
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add the control files for hugetlb controller
[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/]
Signed-off-by: Aneesh Kumar K.V
Cc: David Rientjes
Acked-by: KAMEZAWA Hiroyuki
Cc: Hillf Danton
Reviewed-by: Michal Hocko
Cc: KOSAKI Motohiro
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add the charge and uncharge routines for hugetlb cgroup. We do cgroup
charging in page alloc and uncharge in compound page destructor.
Assigning page's hugetlb cgroup is protected by hugetlb_lock.[liwp@linux.vnet.ibm.com: add huge_page_order check to avoid incorrect uncharge]
Signed-off-by: Aneesh Kumar K.V
Cc: David Rientjes
Acked-by: KAMEZAWA Hiroyuki
Cc: Hillf Danton
Cc: Michal Hocko
Cc: KOSAKI Motohiro
Signed-off-by: Aneesh Kumar K.V
Signed-off-by: Wanpeng Li
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add the hugetlb cgroup pointer to 3rd page lru.next. This limit the usage
to hugetlb cgroup to only hugepages with 3 or more normal pages. I guess
that is an acceptable limitation.Signed-off-by: Aneesh Kumar K.V
Cc: David Rientjes
Acked-by: KAMEZAWA Hiroyuki
Cc: Hillf Danton
Reviewed-by: Michal Hocko
Cc: KOSAKI Motohiro
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
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: KAMEZAWA Hiroyuki
Signed-off-by: Aneesh Kumar K.V
Cc: David Rientjes
Cc: Hillf Danton
Reviewed-by: Michal Hocko
Cc: KOSAKI Motohiro
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
