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 | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/arch/s390/mm/gup.c b/arch/s390/mm/gup.c index 12bbf0e..0ff7e92 100644 --- a/arch/s390/mm/gup.c +++ b/arch/s390/mm/gup.c @@ -12,6 +12,9 @@ #include <linux/rwsem.h> #include <asm/pgtable.h>
+#define CREATE_TRACE_POINTS +#include <trace/events/gup.h> + /* * The performance critical leaf functions are made noinline otherwise gcc * inlines everything into a single function which results in too much @@ -188,6 +191,9 @@ 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); + /* * local_irq_save() doesn't prevent pagetable teardown, but does * prevent the pagetables from being freed on s390.