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Groups > linux.kernel > #1286814

[PATCH v3 5/7] s390: mm/gup: add gup trace points

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Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: linux-s390@vger.kernel.org
Signed-off-by: Yang Shi <yang.shi@linaro.org>
---
 arch/s390/mm/gup.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/s390/mm/gup.c b/arch/s390/mm/gup.c
index 12bbf0e..bbd82bf 100644
--- a/arch/s390/mm/gup.c
+++ b/arch/s390/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
@@ -188,6 +191,9 @@ int __get_user_pages_fast(unsigned long start, int nr_pages, int write,
 	end = start + len;
 	if ((end <= start) || (end > TASK_SIZE))
 		return 0;
+
+	trace_gup_get_user_pages_fast(start, (unsigned long) nr_pages);
+
 	/*
 	 * local_irq_save() doesn't prevent pagetable teardown, but does
 	 * prevent the pagetables from being freed on s390.
-- 
2.0.2

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Thread

[RFC V3] Add gup trace points support Yang Shi <yang.shi@linaro.org> - 2015-12-08 21:10 +0100
  [PATCH v3 2/7] mm/gup: add gup trace points Yang Shi <yang.shi@linaro.org> - 2015-12-08 21:10 +0100
    Re: [PATCH v3 2/7] mm/gup: add gup trace points Steven Rostedt <rostedt@goodmis.org> - 2015-12-08 21:30 +0100
      Re: [PATCH v3 2/7] mm/gup: add gup trace points "Shi, Yang" <yang.shi@linaro.org> - 2015-12-08 22:00 +0100
  [PATCH v3 3/7] x86: mm/gup: add gup trace points Yang Shi <yang.shi@linaro.org> - 2015-12-08 21:10 +0100
  [PATCH v3 5/7] s390: mm/gup: add gup trace points Yang Shi <yang.shi@linaro.org> - 2015-12-08 21:10 +0100
  [PATCH v3 4/7] mips: mm/gup: add gup trace points Yang Shi <yang.shi@linaro.org> - 2015-12-08 21:10 +0100

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