Cc: Martin Schwidefsky <schwidef...@de.ibm.com>
Cc: Heiko Carstens <heiko.carst...@de.ibm.com>
Cc: linux-s...@vger.kernel.org
Signed-off-by: Yang Shi <yang....@linaro.org>
---
arch/s390/mm/gup.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/s390/mm/gup.c b/arch/s390/mm/gup.c
index 12bbf0e..a1d5db7 100644
--- a/arch/s390/mm/gup.c
+++ b/arch/s390/mm/gup.c
@@ -12,6 +12,8 @@
#include <linux/rwsem.h>
#include <asm/pgtable.h>
+#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 +190,9 @@ 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.
--
2.0.2
--
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