From c66ce449c50d16d58893a7caa0279098dde7059a Mon Sep 17 00:00:00 2001
From: Shiraz Hashim <shashim@codeaurora.org>
Date: Wed, 15 Nov 2017 11:14:53 +0530
Subject: [PATCH] lrdp_v2: ignore page if page->order is greater than MAX_ORDER
Throw a warning and continue to next page in case
page->order is greater than MAX_ORDER.
Change-Id: I955efb5375367cde796bb11cb971c88fb9edc971
---
.../parsers/pagetracking.py | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/linux-ramdump-parser-v2/parsers/pagetracking.py b/linux-ramdump-parser-v2/parsers/pagetracking.py
index 89d51ef..3f5046e 100644
--- a/linux-ramdump-parser-v2/parsers/pagetracking.py
+++ b/linux-ramdump-parser-v2/parsers/pagetracking.py
@@ -77,6 +77,20 @@ class PageTracking(RamParser):
out_frequency = self.ramdump.open_file('page_frequency.txt')
sorted_pages = {}
+ '''
+ Following based upon definition in include/linux/mmzone.h
+
+ #ifndef CONFIG_FORCE_MAX_ZONEORDER
+ #define MAX_ORDER 11
+ #else
+ #define MAX_ORDER CONFIG_FORCE_MAX_ZONEORDER
+ #endif
+ '''
+ try:
+ max_order = int(self.ramdump.get_config_val("CONFIG_FORCE_MAX_ZONEORDER"))
+ except:
+ max_order = 11
+
for pfn in for_each_pfn(self.ramdump):
page = pfn_to_page(self.ramdump, pfn)
order = 0
@@ -152,6 +166,11 @@ class PageTracking(RamParser):
if nr_trace_entries <= 0 or nr_trace_entries > 16:
continue
+ if order >= max_order:
+ out_tracking.write('PFN 0x{:x} page 0x{:x} skip as order 0x{:x}\n'.format(
+ pfn, page, order))
+ continue
+
out_tracking.write('PFN 0x{:x}-0x{:x} page 0x{:x}\n'.format(
pfn, pfn + (1 << order) - 1, page))
--
GitLab