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    Subject[PATCH V2 5/7] s390: mm/gup: add gup trace points
    Date
    Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
    Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
    Cc: linux-s390@vger.kernel.org
    Signed-off-by: Yang Shi <yang.shi@linaro.org>
    ---
    arch/s390/mm/gup.c | 7 +++++++
    1 file changed, 7 insertions(+)

    diff --git a/arch/s390/mm/gup.c b/arch/s390/mm/gup.c
    index 12bbf0e..ac25e28 100644
    --- a/arch/s390/mm/gup.c
    +++ b/arch/s390/mm/gup.c
    @@ -10,6 +10,10 @@
    #include <linux/vmstat.h>
    #include <linux/pagemap.h>
    #include <linux/rwsem.h>
    +
    +#define CREATE_TRACE_POINTS
    +#include <trace/events/gup.h>
    +
    #include <asm/pgtable.h>

    /*
    @@ -188,6 +192,9 @@ int __get_user_pages_fast(unsigned long start, int nr_pages, int write,
    end = start + len;
    if ((end <= start) || (end > TASK_SIZE))
    return 0;
    +
    + trace_gup_get_user_pages_fast(start, nr_pages, write, pages);
    +
    /*
    * local_irq_save() doesn't prevent pagetable teardown, but does
    * prevent the pagetables from being freed on s390.
    --
    2.0.2


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