linux-kernel - [PATCH] [12/13] Add vmstat statistics for new swiotlb code

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Date:	Fri,  7 Mar 2008 10:07:22 +0100 (CET)
From:	Andi Kleen <andi@...stfloor.org>
To:	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: [PATCH] [12/13] Add vmstat statistics for new swiotlb code


Signed-off-by: Andi Kleen <ak@...e.de>

---
 include/linux/vmstat.h |    4 ++++
 mm/vmstat.c            |    6 ++++++
 2 files changed, 10 insertions(+)

Index: linux/include/linux/vmstat.h
===================================================================
--- linux.orig/include/linux/vmstat.h
+++ linux/include/linux/vmstat.h
@@ -41,6 +41,10 @@ enum vm_event_item { PGPGIN, PGPGOUT, PS
 		MASK_ALLOC, MASK_FREE, MASK_BITMAP_SKIP, MASK_WAIT,
 		MASK_HIGHER, MASK_LOW_WASTE, MASK_HIGH_WASTE,
 #endif
+#ifdef CONFIG_SWIOTLB_MASK_ALLOC
+		SWIOTLB_USED_PAGES, SWIOTLB_BYTES_WASTED, SWIOTLB_NUM_ALLOCS,
+		SWIOTLB_NUM_FREES,
+#endif
 		NR_VM_EVENT_ITEMS
 };
 
Index: linux/mm/vmstat.c
===================================================================
--- linux.orig/mm/vmstat.c
+++ linux/mm/vmstat.c
@@ -654,6 +654,12 @@ static const char * const vmstat_text[] 
 	"mask_low_waste",
 	"mask_high_waste",
 #endif
+#ifdef CONFIG_SWIOTLB_MASK_ALLOC
+	"swiotlb_used_pages",
+	"swiotlb_bytes_wasted",
+	"swiotlb_num_allocs",
+	"swiotlb_num_frees",
+#endif
 #endif
 };
 
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