lkml.org 
[lkml]   [2012]   [Jun]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 39/40] autonuma: bugcheck page_autonuma fields on newly allocated pages
    Date
    Debug tweak.

    Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
    ---
    include/linux/autonuma.h | 11 +++++++++++
    mm/page_alloc.c | 1 +
    2 files changed, 12 insertions(+), 0 deletions(-)

    diff --git a/include/linux/autonuma.h b/include/linux/autonuma.h
    index 67af86a..05bd8c1 100644
    --- a/include/linux/autonuma.h
    +++ b/include/linux/autonuma.h
    @@ -29,6 +29,16 @@ static inline void autonuma_free_page(struct page *page)
    }
    }

    +static inline void autonuma_check_new_page(struct page *page)
    +{
    + struct page_autonuma *page_autonuma;
    + if (!autonuma_impossible()) {
    + page_autonuma = lookup_page_autonuma(page);
    + BUG_ON(page_autonuma->autonuma_migrate_nid != -1);
    + BUG_ON(page_autonuma->autonuma_last_nid != -1);
    + }
    +}
    +
    #define autonuma_printk(format, args...) \
    if (autonuma_debug()) printk(format, ##args)

    @@ -41,6 +51,7 @@ static inline void autonuma_migrate_split_huge_page(struct page *page,
    struct page *page_tail) {}
    static inline void autonuma_setup_new_exec(struct task_struct *p) {}
    static inline void autonuma_free_page(struct page *page) {}
    +static inline void autonuma_check_new_page(struct page *page) {}

    #endif /* CONFIG_AUTONUMA */

    diff --git a/mm/page_alloc.c b/mm/page_alloc.c
    index 2d53a1f..5943ed2 100644
    --- a/mm/page_alloc.c
    +++ b/mm/page_alloc.c
    @@ -833,6 +833,7 @@ static inline int check_new_page(struct page *page)
    bad_page(page);
    return 1;
    }
    + autonuma_check_new_page(page);
    return 0;
    }


    \
     
     \ /
      Last update: 2012-06-28 15:21    [W:5.908 / U:0.008 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site