Doug / smarc-fsl-linux-kernel

19 Dec, 2012

1 commit

  • 7179e7bf4   mm/hugetlb: create hugetlb cgroup file in hugetlb_init ... Browse Code »

    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

    Jianguo Wu
     

20 Nov, 2012

1 commit

06 Nov, 2012

2 commits

  • bcf6de1b9   cgroup: make ->pre_destroy() return void ... Browse Code »

    All ->pre_destory() implementations return 0 now, which is the only
    allowed return value. Make it return void.

    Signed-off-by: Tejun Heo
    Reviewed-by: Michal Hocko
    Acked-by: KAMEZAWA Hiroyuki
    Acked-by: Li Zefan
    Cc: Balbir Singh
    Cc: Vivek Goyal

    Tejun Heo
     
  • 9d093cb10   hugetlb: do not fail in hugetlb_cgroup_pre_destroy ... Browse Code »

    Now that pre_destroy callbacks are called from the context where neither
    any task can attach the group nor any children group can be added there
    is no other way to fail from hugetlb_pre_destroy.

    Signed-off-by: Michal Hocko
    Reviewed-by: Tejun Heo
    Reviewed-by: Glauber Costa
    Acked-by: KAMEZAWA Hiroyuki
    Signed-off-by: Tejun Heo

    Michal Hocko
     

01 Aug, 2012

7 commits

  • 75754681f   hugetlb/cgroup: remove exclude and wakeup rmdir calls from migrate ... Browse Code »

    We already hold the hugetlb_lock. That should prevent a parallel cgroup
    rmdir from touching page's hugetlb cgroup. So remove the exclude and
    wakeup calls.

    Signed-off-by: Aneesh Kumar K.V
    Reviewed-by: Michal Hocko
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Aneesh Kumar K.V
     
  • 94ae8ba71   hugetlb/cgroup: assign the page hugetlb cgroup when we move the page to active list. ... Browse Code »

    A page's hugetlb cgroup assignment and movement to the active list should
    occur with hugetlb_lock held. Otherwise when we remove the hugetlb cgroup
    we will iterate the active list and find pages with NULL hugetlb cgroup
    values.

    Signed-off-by: Aneesh Kumar K.V
    Reviewed-by: Michal Hocko
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Aneesh Kumar K.V
     
  • 8e6ac7fab   hugetlb/cgroup: migrate hugetlb cgroup info from oldpage to new page during migration ... Browse Code »

    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

    Aneesh Kumar K.V
     
  • abb8206cb   hugetlb/cgroup: add hugetlb cgroup control files ... Browse Code »

    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

    Aneesh Kumar K.V
     
  • da1def559   hugetlb/cgroup: add support for cgroup removal ... Browse Code »

    Add support for cgroup removal. If we don't have parent cgroup, the
    charges are moved to root cgroup.

    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

    Aneesh Kumar K.V
     
  • 6d76dcf40   hugetlb/cgroup: add charge/uncharge routines for hugetlb cgroup ... Browse Code »

    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

    Aneesh Kumar K.V
     
  • 2bc64a204   mm/hugetlb: add new HugeTLB cgroup ... Browse Code »

    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

    Aneesh Kumar K.V