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Date: Mon, 25 Feb 2019 11:05:35 -0300
From: Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
To: Tony Jones <tonyj@...e.de>
Cc: linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
Seeteena Thoufeek <s1seetee@...ux.vnet.ibm.com>,
Tom Zanussi <tzanussi@...il.com>
Subject: Re: [PATCH 02/15] perf script python: add Python3 support to
check-perf-trace.py
Em Fri, Feb 22, 2019 at 03:06:06PM -0800, Tony Jones escreveu:
> Support both Python 2 and Python 3 in the check-perf-trace.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.
>
> Also correct inconsistent indentation which was being flagged by Python3.
When we have "Also" in a patch, usually it need to be split :-)
- Arnaldo
> The use of from __future__ implies the minimum supported version of
> Python2 is now v2.6
>
> Signed-off-by: Tony Jones <tonyj@...e.de>
> Signed-off-by: Seeteena Thoufeek <s1seetee@...ux.vnet.ibm.com>
> Cc: Tom Zanussi <tzanussi@...il.com>
> ---
> tools/perf/scripts/python/check-perf-trace.py | 68 ++++++++++---------
> 1 file changed, 36 insertions(+), 32 deletions(-)
>
> diff --git a/tools/perf/scripts/python/check-perf-trace.py b/tools/perf/scripts/python/check-perf-trace.py
> index 334599c6032c..2851cf0e6b4b 100644
> --- a/tools/perf/scripts/python/check-perf-trace.py
> +++ b/tools/perf/scripts/python/check-perf-trace.py
> @@ -7,11 +7,13 @@
> # events, etc. Basically, if this script runs successfully and
> # displays expected results, Python scripting support should be ok.
>
> +from __future__ import print_function
> +
> import os
> import sys
>
> -sys.path.append(os.environ['PERF_EXEC_PATH'] + \
> - '/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
> +sys.path.append(os.environ['PERF_EXEC_PATH'] +
> + '/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
>
> from Core import *
> from perf_trace_context import *
> @@ -19,37 +21,38 @@ from perf_trace_context import *
> unhandled = autodict()
>
> def trace_begin():
> - print "trace_begin"
> - pass
> + print("trace_begin")
> + pass
>
> def trace_end():
> - print_unhandled()
> + print_unhandled()
>
> def irq__softirq_entry(event_name, context, common_cpu,
> - common_secs, common_nsecs, common_pid, common_comm,
> - common_callchain, vec):
> - print_header(event_name, common_cpu, common_secs, common_nsecs,
> - common_pid, common_comm)
> + common_secs, common_nsecs, common_pid, common_comm,
> + common_callchain, vec):
> +
> + print_header(event_name, common_cpu, common_secs, common_nsecs,
> + common_pid, common_comm)
>
> - print_uncommon(context)
> + print_uncommon(context)
>
> - print "vec=%s\n" % \
> - (symbol_str("irq__softirq_entry", "vec", vec)),
> + print("vec=%s" %
> + (symbol_str("irq__softirq_entry", "vec", vec)))
>
> def kmem__kmalloc(event_name, context, common_cpu,
> - common_secs, common_nsecs, common_pid, common_comm,
> - common_callchain, call_site, ptr, bytes_req, bytes_alloc,
> - gfp_flags):
> - print_header(event_name, common_cpu, common_secs, common_nsecs,
> - common_pid, common_comm)
> + common_secs, common_nsecs, common_pid, common_comm,
> + common_callchain, call_site, ptr, bytes_req, bytes_alloc,
> + gfp_flags):
>
> - print_uncommon(context)
> + print_header(event_name, common_cpu, common_secs, common_nsecs,
> + common_pid, common_comm)
>
> - print "call_site=%u, ptr=%u, bytes_req=%u, " \
> - "bytes_alloc=%u, gfp_flags=%s\n" % \
> - (call_site, ptr, bytes_req, bytes_alloc,
> + print_uncommon(context)
>
> - flag_str("kmem__kmalloc", "gfp_flags", gfp_flags)),
> + print("call_site=%u, ptr=%u, bytes_req=%u, "
> + "bytes_alloc=%u, gfp_flags=%s\n" %
> + (call_site, ptr, bytes_req, bytes_alloc,
> + flag_str("kmem__kmalloc", "gfp_flags", gfp_flags))),
>
> def trace_unhandled(event_name, context, event_fields_dict):
> try:
> @@ -58,25 +61,26 @@ def trace_unhandled(event_name, context, event_fields_dict):
> unhandled[event_name] = 1
>
> def print_header(event_name, cpu, secs, nsecs, pid, comm):
> - print "%-20s %5u %05u.%09u %8u %-20s " % \
> - (event_name, cpu, secs, nsecs, pid, comm),
> + print("%-20s %5u %05u.%09u %8u %-20s " %
> + (event_name, cpu, secs, nsecs, pid, comm),
> + end='')
>
> # print trace fields not included in handler args
> def print_uncommon(context):
> - print "common_preempt_count=%d, common_flags=%s, common_lock_depth=%d, " \
> - % (common_pc(context), trace_flag_str(common_flags(context)), \
> - common_lock_depth(context))
> + print("common_preempt_count=%d, common_flags=%s, common_lock_depth=%d, " %
> + (common_pc(context), trace_flag_str(common_flags(context)),
> + common_lock_depth(context))),
>
> def print_unhandled():
> keys = unhandled.keys()
> if not keys:
> return
>
> - print "\nunhandled events:\n\n",
> + print("\nunhandled events:\n")
>
> - print "%-40s %10s\n" % ("event", "count"),
> - print "%-40s %10s\n" % ("----------------------------------------", \
> - "-----------"),
> + print("%-40s %10s" % ("event", "count"))
> + print("%-40s %10s" % ("----------------------------------------",
> + "-----------"))
>
> for event_name in keys:
> - print "%-40s %10d\n" % (event_name, unhandled[event_name])
> + print("%-40s %10d\n" % (event_name, unhandled[event_name]))
> --
> 2.20.1
--
- Arnaldo
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