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Groups > linux.kernel > #1281334

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

From Yang Shi <yang.shi@linaro.org>
Newsgroups linux.kernel
Subject [PATCH 4/7] mips: mm/gup: add gup trace points
Date 2015-12-02 00:30 +0100
Message-ID <qB2wW-7Kw-25@gated-at.bofh.it> (permalink)
References <qB2wV-7Kw-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Signed-off-by: Yang Shi <yang.shi@linaro.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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Thread

[RFC] Add gup trace points support Yang Shi <yang.shi@linaro.org> - 2015-12-02 00:30 +0100
  [PATCH 1/7] trace/events: Add gup trace events Yang Shi <yang.shi@linaro.org> - 2015-12-02 00:30 +0100
    Re: [PATCH 1/7] trace/events: Add gup trace events Steven Rostedt <rostedt@goodmis.org> - 2015-12-02 01:00 +0100
      Re: [PATCH 1/7] trace/events: Add gup trace events "Shi, Yang" <yang.shi@linaro.org> - 2015-12-02 01:10 +0100
        Re: [PATCH 1/7] trace/events: Add gup trace events Steven Rostedt <rostedt@goodmis.org> - 2015-12-02 01:20 +0100
          Re: [PATCH 1/7] trace/events: Add gup trace events "Shi, Yang" <yang.shi@linaro.org> - 2015-12-02 01:40 +0100
  [PATCH 4/7] mips: mm/gup: add gup trace points Yang Shi <yang.shi@linaro.org> - 2015-12-02 00:30 +0100
    Re: [PATCH 4/7] mips: mm/gup: add gup trace points Ralf Baechle <ralf@linux-mips.org> - 2015-12-02 14:30 +0100

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