Re: [PATCH v5 5/7] s390: mm/gup: add gup trace points

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Hi folks,

Any comment for this one? The tracing part review has been done.

Thanks,
Yang


On 12/9/2015 1:22 PM, Yang Shi wrote:
Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Cc: linux-s390@xxxxxxxxxxxxxxx
Signed-off-by: Yang Shi <yang.shi@xxxxxxxxxx>
---
  arch/s390/mm/gup.c | 5 +++++
  1 file changed, 5 insertions(+)

diff --git a/arch/s390/mm/gup.c b/arch/s390/mm/gup.c
index 12bbf0e..a1d5db7 100644
--- a/arch/s390/mm/gup.c
+++ b/arch/s390/mm/gup.c
@@ -12,6 +12,8 @@
  #include <linux/rwsem.h>
  #include <asm/pgtable.h>

+#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 +190,9 @@ 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, nr_pages);
+
  	/*
  	 * local_irq_save() doesn't prevent pagetable teardown, but does
  	 * prevent the pagetables from being freed on s390.


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