Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/tools/perf/scripts/python/stat-cpi.py b/tools/perf/scripts/python/stat-cpi.py
index 8410672..01fa933 100644
--- a/tools/perf/scripts/python/stat-cpi.py
+++ b/tools/perf/scripts/python/stat-cpi.py
@@ -1,6 +1,7 @@
-#!/usr/bin/env python
 # SPDX-License-Identifier: GPL-2.0
 
+from __future__ import print_function
+
 data    = {}
 times   = []
 threads = []
@@ -20,8 +21,8 @@
         threads.append(thread)
 
 def store(time, event, cpu, thread, val, ena, run):
-    #print "event %s cpu %d, thread %d, time %d, val %d, ena %d, run %d" % \
-    #      (event, cpu, thread, time, val, ena, run)
+    #print("event %s cpu %d, thread %d, time %d, val %d, ena %d, run %d" %
+    #      (event, cpu, thread, time, val, ena, run))
 
     store_key(time, cpu, thread)
     key = get_key(time, event, cpu, thread)
@@ -59,7 +60,7 @@
             if ins != 0:
                 cpi = cyc/float(ins)
 
-            print "%15f: cpu %d, thread %d -> cpi %f (%d/%d)" % (time/(float(1000000000)), cpu, thread, cpi, cyc, ins)
+            print("%15f: cpu %d, thread %d -> cpi %f (%d/%d)" % (time/(float(1000000000)), cpu, thread, cpi, cyc, ins))
 
 def trace_end():
     pass
@@ -75,4 +76,4 @@
 #                if ins != 0:
 #                    cpi = cyc/float(ins)
 #
-#                print "time %.9f, cpu %d, thread %d -> cpi %f" % (time/(float(1000000000)), cpu, thread, cpi)
+#                print("time %.9f, cpu %d, thread %d -> cpi %f" % (time/(float(1000000000)), cpu, thread, cpi))