From: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
Date: Sun, 15 Jan 2017 08:14:12 +0100
Subject: [PATCH] AArch64: Read hugepage size from /proc/meminfo

This method should be arch-indepedent, provided /proc/meminfo
reports the correct information.

Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
---
 agent | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/agent b/agent
index eeb4d26..d514de6 100755
--- a/agent
+++ b/agent
@@ -1399,6 +1399,13 @@ class NodeAgent
   def supported_hugepages
     return [2048, 1048576] if _get_detailed_cpuinfo['0'][:flags].include?('pdpe1gb')
     return [2048] if _get_detailed_cpuinfo['0'][:flags].include?('pse')
+    # AArch64 does not expose CPU flags, but we can rely on /proc/meminfo
+    File.open('/proc/meminfo').each do |l|
+      case l.strip
+        when /Hugepagesize:\s+(\d+)\s+kB/
+          return [$1.to_i()]
+        end
+    end
     []
   end