* [PATCH v5 6/7] sh: mm/gup: add gup trace points
[not found] <1449696151-4195-1-git-send-email-yang.shi@linaro.org>
@ 2015-12-09 21:22 ` Yang Shi
0 siblings, 0 replies; only message in thread
From: Yang Shi @ 2015-12-09 21:22 UTC (permalink / raw)
To: akpm, rostedt, mingo
Cc: linux-kernel, linux-mm, linaro-kernel, yang.shi, linux-sh
Cc: linux-sh@vger.kernel.org
Signed-off-by: Yang Shi <yang.shi@linaro.org>
---
arch/sh/mm/gup.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/sh/mm/gup.c b/arch/sh/mm/gup.c
index e7af6a6..dc80480 100644
--- a/arch/sh/mm/gup.c
+++ b/arch/sh/mm/gup.c
@@ -14,6 +14,8 @@
#include <linux/highmem.h>
#include <asm/pgtable.h>
+#include <trace/events/gup.h>
+
static inline pte_t gup_get_pte(pte_t *ptep)
{
#ifndef CONFIG_X2TLB
@@ -178,6 +180,8 @@ 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);
+
/*
* This doesn't prevent pagetable teardown, but does prevent
* the pagetables and pages from being freed.
@@ -244,6 +248,8 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write,
} while (pgdp++, addr = next, addr != end);
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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[not found] <1449696151-4195-1-git-send-email-yang.shi@linaro.org>
2015-12-09 21:22 ` [PATCH v5 6/7] sh: mm/gup: add gup trace points Yang Shi
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