linux-kernel - [PATCH 4/7] mips: mm/gup: add gup trace points

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Date:	Tue,  1 Dec 2015 15:06:14 -0800
From:	Yang Shi <yang.shi@...aro.org>
To:	akpm@...ux-foundation.org, rostedt@...dmis.org, mingo@...hat.com
Cc:	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	linaro-kernel@...ts.linaro.org, yang.shi@...aro.org,
	Ralf Baechle <ralf@...ux-mips.org>, linux-mips@...ux-mips.org
Subject: [PATCH 4/7] mips: mm/gup: add gup trace points

Cc: Ralf Baechle <ralf@...ux-mips.org>
Cc: linux-mips@...ux-mips.org
Signed-off-by: Yang Shi <yang.shi@...aro.org>
---
 arch/mips/mm/gup.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/mips/mm/gup.c b/arch/mips/mm/gup.c
index 349995d..3c5b8c8 100644
--- a/arch/mips/mm/gup.c
+++ b/arch/mips/mm/gup.c
@@ -12,6 +12,9 @@
 #include <linux/swap.h>
 #include <linux/hugetlb.h>
 
+#define CREATE_TRACE_POINTS
+#include <trace/events/gup.h>
+
 #include <asm/cpu-features.h>
 #include <asm/pgtable.h>
 
@@ -211,6 +214,8 @@ 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
@@ -277,6 +282,8 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write,
 	if (end < start || cpu_has_dc_aliases)
 		goto slow_irqon;
 
+	trace_gup_get_user_pages_fast(start, nr_pages, write, pages);
+
 	/* XXX: batch / limit 'nr' */
 	local_irq_disable();
 	pgdp = pgd_offset(mm, addr);
-- 
2.0.2

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