[PATCH v4 7/7] sparc64: mm/gup: add gup trace points

From: Yang Shi
Date: Wed Dec 09 2015 - 12:50:45 EST


Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: sparclinux@xxxxxxxxxxxxxxx
Signed-off-by: Yang Shi <yang.shi@xxxxxxxxxx>
---
arch/sparc/mm/gup.c | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/arch/sparc/mm/gup.c b/arch/sparc/mm/gup.c
index 2e5c4fc..d9f573c 100644
--- a/arch/sparc/mm/gup.c
+++ b/arch/sparc/mm/gup.c
@@ -12,6 +12,9 @@
#include <linux/rwsem.h>
#include <asm/pgtable.h>

+#define CREATE_TRACE_POINTS
+#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
@@ -174,6 +177,8 @@ int __get_user_pages_fast(unsigned long start, int nr_pages, int write,
len = (unsigned long) nr_pages << PAGE_SHIFT;
end = start + len;

+ trace_gup_get_user_pages_fast(start, nr_pages);
+
local_irq_save(flags);
pgdp = pgd_offset(mm, addr);
do {
@@ -236,6 +241,8 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write,

local_irq_enable();

+ trace_gup_get_user_pages_fast(start, nr_pages);
+
VM_BUG_ON(nr != (end - start) >> PAGE_SHIFT);
return nr;

--
2.0.2

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