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perf script: Autopep8 futex-contention
10 years leaves its mark! Python has evolved and so has its style guide.
Even with vim it is getting hard to follow the no longer valid
guidelines (spaces vs. tabs).
Autopep8 this code to modernize it!
Signed-off-by: Hagen Paul Pfeifer <hagen@jauu.net>
Link: http://lore.kernel.org/lkml/20200921201928.799498-1-hagen@jauu.net
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
authored by
Hagen Paul Pfeifer
and committed by
Arnaldo Carvalho de Melo
2a684fcb
002a3d69
+28
-23
+28
-23
tools/perf/scripts/python/futex-contention.py
+28
-23
tools/perf/scripts/python/futex-contention.py
···
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from __future__ import print_function
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import os, sys
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sys.path.append(os.environ['PERF_EXEC_PATH'] + '/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
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import os
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import sys
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sys.path.append(os.environ['PERF_EXEC_PATH'] +
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'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
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from Util import *
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process_names = {}
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thread_thislock = {}
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thread_blocktime = {}
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lock_waits = {} # long-lived stats on (tid,lock) blockage elapsed time
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process_names = {} # long-lived pid-to-execname mapping
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lock_waits = {} # long-lived stats on (tid,lock) blockage elapsed time
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process_names = {} # long-lived pid-to-execname mapping
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def syscalls__sys_enter_futex(event, ctxt, cpu, s, ns, tid, comm, callchain,
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nr, uaddr, op, val, utime, uaddr2, val3):
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cmd = op & FUTEX_CMD_MASK
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if cmd != FUTEX_WAIT:
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return # we don't care about originators of WAKE events
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nr, uaddr, op, val, utime, uaddr2, val3):
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cmd = op & FUTEX_CMD_MASK
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if cmd != FUTEX_WAIT:
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return # we don't care about originators of WAKE events
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process_names[tid] = comm
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thread_thislock[tid] = uaddr
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thread_blocktime[tid] = nsecs(s, ns)
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process_names[tid] = comm
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thread_thislock[tid] = uaddr
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thread_blocktime[tid] = nsecs(s, ns)
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def syscalls__sys_exit_futex(event, ctxt, cpu, s, ns, tid, comm, callchain,
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nr, ret):
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if tid in thread_blocktime:
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elapsed = nsecs(s, ns) - thread_blocktime[tid]
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add_stats(lock_waits, (tid, thread_thislock[tid]), elapsed)
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del thread_blocktime[tid]
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del thread_thislock[tid]
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nr, ret):
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if tid in thread_blocktime:
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elapsed = nsecs(s, ns) - thread_blocktime[tid]
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add_stats(lock_waits, (tid, thread_thislock[tid]), elapsed)
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del thread_blocktime[tid]
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del thread_thislock[tid]
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def trace_begin():
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print("Press control+C to stop and show the summary")
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print("Press control+C to stop and show the summary")
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def trace_end():
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for (tid, lock) in lock_waits:
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min, max, avg, count = lock_waits[tid, lock]
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print("%s[%d] lock %x contended %d times, %d avg ns" %
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(process_names[tid], tid, lock, count, avg))
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for (tid, lock) in lock_waits:
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min, max, avg, count = lock_waits[tid, lock]
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print("%s[%d] lock %x contended %d times, %d avg ns" %
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(process_names[tid], tid, lock, count, avg))