From: Atsushi Kumagai <kumagai-atsushi@xxxxxxxxxxxxxxxxx>
Date: Fri, 24 Aug 2012 10:16:52 +0900
Subject: [PATCH 11/16] [PATCH v3 11/12] Remove waste calculation to improve performance.
This patch adds check whether each page correspond to target memory
region or not into filtering logic.
Signed-off-by: Atsushi Kumagai <kumagai-atsushi at mxc.nes.nec.co.jp>
---
makedumpfile.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/makedumpfile.c b/makedumpfile.c
index cc90d39..879f73a 100644
--- a/makedumpfile.c
+++ b/makedumpfile.c
@@ -3751,6 +3751,12 @@ __exclude_unnecessary_pages(unsigned long mem_map,
for (pfn = pfn_start; pfn < pfn_end; pfn++, mem_map += SIZE(page)) {
/*
+ * If this pfn doesn't belong to target region, skip this pfn.
+ */
+ if (info->flag_cyclic && !is_cyclic_region(pfn))
+ continue;
+
+ /*
* Exclude the memory hole.
*/
if (is_xen_memory()) {
--
1.7.9.2
