perf script python: Add Python3 support to powerpc-hcalls.py

Support both Python2 and Python3 in the powerpc-hcalls.py script

There may be differences in the ordering of output lines due to
differences in dictionary ordering etc. However the format within lines
should be unchanged.

The use of 'from __future__' implies the minimum supported Python2 version
is now v2.6

Signed-off-by: Tony Jones <[e-mail]>
Cc: Ravi Bangoria <[e-mail]>
Link: http://lkml.kernel.org/r/[e-mail]
Signed-off-by: Seeteena Thoufeek <[e-mail]>
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/scripts/python/powerpc-hcalls.py

···
 #
 # Hypervisor call statisics
 
+from __future__ import print_function
+
 import os
 import sys
 
···
 }
 
 def hcall_table_lookup(opcode):
-	if (hcall_table.has_key(opcode)):
+	if (opcode in hcall_table):
 		return hcall_table[opcode]
 	else:
 		return opcode
···
 print_ptrn = '%-28s%10s%10s%10s%10s'
 
 def trace_end():
-	print print_ptrn % ('hcall', 'count', 'min(ns)', 'max(ns)', 'avg(ns)')
-	print '-' * 68
+	print(print_ptrn % ('hcall', 'count', 'min(ns)', 'max(ns)', 'avg(ns)'))
+	print('-' * 68)
 	for opcode in output:
 		h_name = hcall_table_lookup(opcode)
 		time = output[opcode]['time']
···
 		min_t = output[opcode]['min']
 		max_t = output[opcode]['max']
 
-		print print_ptrn % (h_name, cnt, min_t, max_t, time/cnt)
+		print(print_ptrn % (h_name, cnt, min_t, max_t, time//cnt))
 
 def powerpc__hcall_exit(name, context, cpu, sec, nsec, pid, comm, callchain,
 			opcode, retval):
-	if (d_enter.has_key(cpu) and d_enter[cpu].has_key(opcode)):
+	if (cpu in d_enter and opcode in d_enter[cpu]):
 		diff = nsecs(sec, nsec) - d_enter[cpu][opcode]
 
-		if (output.has_key(opcode)):
+		if (opcode in output):
 			output[opcode]['time'] += diff
 			output[opcode]['cnt'] += 1
 			if (output[opcode]['min'] > diff):
···
 
 		del d_enter[cpu][opcode]
 #	else:
-#		print "Can't find matching hcall_enter event. Ignoring sample"
+#		print("Can't find matching hcall_enter event. Ignoring sample")
 
 def powerpc__hcall_entry(event_name, context, cpu, sec, nsec, pid, comm,
 			 callchain, opcode):
-		if (d_enter.has_key(cpu)):
+		if (cpu in d_enter):
 			d_enter[cpu][opcode] = nsecs(sec, nsec)
 		else:
 			d_enter[cpu] = {opcode: nsecs(sec, nsec)}