Cc: "David S. Miller" davem@davemloft.net Cc: sparclinux@vger.kernel.org Signed-off-by: Yang Shi yang.shi@linaro.org --- The context depends on the below patch: https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1028752.html
arch/sparc/mm/gup.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/arch/sparc/mm/gup.c b/arch/sparc/mm/gup.c index cf4fb47..6dcfc4d 100644 --- a/arch/sparc/mm/gup.c +++ b/arch/sparc/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>
/* @@ -177,6 +181,8 @@ int __get_user_pages_fast(unsigned long start, int nr_pages, int write, (void __user *)start, len))) return 0;
+ trace_gup_get_user_pages_fast(start, nr_pages, write, pages); + local_irq_save(flags); pgdp = pgd_offset(mm, addr); do { @@ -209,6 +215,8 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write, if (end < start) goto slow_irqon;
+ trace_gup_get_user_pages_fast(start, nr_pages, write, pages); + /* * XXX: batch / limit 'nr', to avoid large irq off latency * needs some instrumenting to determine the common sizes used by