From: Tony Jones Date: Fri, 1 Mar 2019 17:18:58 -0800 Subject: perf script python: Add Python3 support to futex-contention.py Origin: https://git.kernel.org/linus/de2ec16bd438945813198d4de2339a396904c206 Bug-Debian: https://bugs.debian.org/944641 Support both Python2 and Python3 in the futex-contention.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 Link: http://lkml.kernel.org/r/20190302011903.2416-3-tonyj@suse.de Signed-off-by: Seeteena Thoufeek Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/scripts/python/futex-contention.py | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) --- a/tools/perf/scripts/python/futex-contention.py +++ b/tools/perf/scripts/python/futex-contention.py @@ -10,6 +10,8 @@ # # Measures futex contention +from __future__ import print_function + import os, sys sys.path.append(os.environ['PERF_EXEC_PATH'] + '/scripts/python/Perf-Trace-Util/lib/Perf/Trace') from Util import * @@ -33,18 +35,18 @@ def syscalls__sys_enter_futex(event, ctx 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))