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perf script python: Add Python3 support to futex-contention.py 

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 <tonyj@suse.de>
Link: http://lkml.kernel.org/r/20190302011903.2416-3-tonyj@suse.de
Signed-off-by: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Tony Jones 2019-03-01 17:18:58 -08:00 committed by Arnaldo Carvalho de Melo
parent b504d7f687
commit de2ec16bd4
1 changed files with 6 additions and 4 deletions
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10
tools/perf/scripts/python/futex-contention.py
View File

@ -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, 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))