Fixing pvalloc memleak test

Request to allocate 30K bytes using pvalloc(), results
in allocating 3*64Kb(on 64Kb pagesize system). The assertion
expects leak to be 30Kb, whereas leaked memory is much more
due to pvalloc's implementation for power.

Signed-off-by: Abhishek Dubey <[email protected]>

tests/python/test_tools_memleak.py

@@ -3,6 +3,7 @@
 from unittest import main, skipUnless, TestCase
 from utils import kernel_version_ge
 import os
+import platform
 import subprocess
 import sys
 import tempfile
@@ -102,7 +103,13 @@ def test_memalign(self):
         self.assertEqual(cfg.leaking_amount, self.run_leaker("memalign"))
 
     def test_pvalloc(self):
-        self.assertEqual(cfg.leaking_amount, self.run_leaker("pvalloc"))
+        # pvalloc's implementation for power invokes mmap(), which adjusts the
+        # allocated size to meet pvalloc's constraints. Actual leaked memory
+        # could be more than requested, hence assertLessEqual.
+        if platform.machine() == 'ppc64le':
+            self.assertLessEqual(cfg.leaking_amount, self.run_leaker("pvalloc"))
+        else:
+            self.assertEqual(cfg.leaking_amount, self.run_leaker("pvalloc"))
 
     def test_aligned_alloc(self):
         self.assertEqual(cfg.leaking_amount, self.run_leaker("aligned_alloc"))