Cc: Thomas Gleixner <t...@linutronix.de>
Cc: Ingo Molnar <mi...@redhat.com>
Cc: "H. Peter Anvin" <h...@zytor.com>
Cc: x...@kernel.org
Signed-off-by: Yang Shi <yang....@linaro.org>
---
arch/x86/mm/gup.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/x86/mm/gup.c b/arch/x86/mm/gup.c
index ae9a37b..ed6cca9 100644
--- a/arch/x86/mm/gup.c
+++ b/arch/x86/mm/gup.c
@@ -10,6 +10,9 @@
#include <linux/highmem.h>
#include <linux/swap.h>
+#define CREATE_TRACE_POINTS
+#include <trace/events/gup.h>>
+
#include <asm/pgtable.h>
static inline pte_t gup_get_pte(pte_t *ptep)
@@ -270,6 +273,8 @@ 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);
+
/*
* XXX: batch / limit 'nr', to avoid large irq off latency
* needs some instrumenting to determine the common sizes used by
@@ -342,6 +347,8 @@ int get_user_pages_fast(unsigned long start, int nr_pages,
int write,
goto slow_irqon;
#endif
+ 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
--
2.0.2
--
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