On 12/02/2015 02:53 PM, Yang Shi wrote: > diff --git a/mm/gup.c b/mm/gup.c > index deafa2c..10245a4 100644 > --- a/mm/gup.c > +++ b/mm/gup.c > @@ -13,6 +13,9 @@ > #include <linux/rwsem.h> > #include <linux/hugetlb.h> > > +#define CREATE_TRACE_POINTS > +#include <trace/events/gup.h> > + > #include <asm/pgtable.h> > #include <asm/tlbflush.h>
This needs to be _the_ last thing that gets #included. Otherwise, you risk colliding with any other trace header that gets implicitly included below. > @@ -1340,6 +1346,8 @@ int __get_user_pages_fast(unsigned long start, int > nr_pages, int write, > start, len))) > return 0; > > + trace_gup_get_user_pages_fast(start, nr_pages, write, pages); > + > /* > * Disable interrupts. We use the nested form as we can already have > * interrupts disabled by get_futex_key. It would be _really_ nice to be able to see return values from the various gup calls as well. Is that feasible? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
