[PATCH] perf scripts python: Add Python 3 support to futex-contention.py

[Seeteena Thoufeek]

Support both Python 2 and Python 3 in futex-contention.py.
``print`` is now a function rather than a statement. This should
have no functional change.

The "has_key()" method is deprecated in favor of the "in" operator.
So incorporate those changes here.

Signed-off-by: Seeteena Thoufeek <s1seetee@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Ravi Bangoria <ravi.bangoria@xxxxxxxxxxxxx>

Please enter the commit message for your changes. Lines starting
---
 tools/perf/scripts/python/futex-contention.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/perf/scripts/python/futex-contention.py b/tools/perf/scripts/python/futex-contention.py
index 0f5cf43..2f8eb81 100644
--- a/tools/perf/scripts/python/futex-contention.py
+++ b/tools/perf/scripts/python/futex-contention.py
@@ -33,18 +33,18 @@ def syscalls__sys_enter_futex(event, ctxt, cpu, s, ns, tid, comm, callchain,
 
 def syscalls__sys_exit_futex(event, ctxt, cpu, s, ns, tid, comm, callchain,
 			     nr, ret):
-	if thread_blocktime.has_key(tid):
+	if (tid in thread_blocktime):
 		elapsed = nsecs(s, ns) - thread_blocktime[tid]
 		add_stats(lock_waits, (tid, thread_thislock[tid]), elapsed)
 		del thread_blocktime[tid]
 		del thread_thislock[tid]
 
 def trace_begin():
-	print "Press control+C to stop and show the summary"
+	print("Press control+C to stop and show the summary")
 
 def trace_end():
 	for (tid, lock) in lock_waits:
 		min, max, avg, count = lock_waits[tid, lock]
-		print "%s[%d] lock %x contended %d times, %d avg ns" % \
-		      (process_names[tid], tid, lock, count, avg)
+		print("%s[%d] lock %x contended %d times, %d avg ns" % \
+		      (process_names[tid], tid, lock, count, avg))
 
-- 
1.8.3.1