From ae7f01fd192ffb859f5ca067311169a817d73b1f Mon Sep 17 00:00:00 2001
From: Marc Bonnici <marc.bonnici@arm.com>
Date: Fri, 24 May 2019 11:15:46 +0100
Subject: [PATCH] target: Use root if available when determine number of cpus

On some targets some entries in `/sys/devices/system/cpu` require root
to list otherwise will return a permission error.
---
 devlib/target.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/devlib/target.py b/devlib/target.py
index 92a6839..8643f13 100644
--- a/devlib/target.py
+++ b/devlib/target.py
@@ -155,7 +155,7 @@ class Target(object):
     def number_of_cpus(self):
         num_cpus = 0
         corere = re.compile(r'^\s*cpu\d+\s*$')
-        output = self.execute('ls /sys/devices/system/cpu')
+        output = self.execute('ls /sys/devices/system/cpu', as_root=self.is_rooted)
         for entry in output.split():
             if corere.match(entry):
                 num_cpus += 1