diff mbox

[V2,5/7] s390: mm/gup: add gup trace points

Message ID 1449096813-22436-6-git-send-email-yang.shi@linaro.org
State New
Headers show

Commit Message

Yang Shi Dec. 2, 2015, 10:53 p.m. UTC 
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(+)

-- 
2.0.2

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diff mbox

Patch

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.