[PATCH V2 3/7] x86: mm/gup: add gup trace points

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: x86@xxxxxxxxxx
Signed-off-by: Yang Shi <yang.shi@xxxxxxxxxx>
---
 arch/x86/mm/gup.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/x86/mm/gup.c b/arch/x86/mm/gup.c
index ae9a37b..ed6cca9 100644
--- a/arch/x86/mm/gup.c
+++ b/arch/x86/mm/gup.c
@@ -10,6 +10,9 @@
 #include <linux/highmem.h>
 #include <linux/swap.h>
 
+#define CREATE_TRACE_POINTS
+#include <trace/events/gup.h>>
+
 #include <asm/pgtable.h>
 
 static inline pte_t gup_get_pte(pte_t *ptep)
@@ -270,6 +273,8 @@ 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
@@ -342,6 +347,8 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write,
 		goto slow_irqon;
 #endif
 
+	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
-- 
2.0.2

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>



[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Bugtraq]     [Linux]     [Linux OMAP]     [Linux MIPS]     [ECOS]     [Asterisk Internet PBX]     [Linux API]