linux-kernel - Re: [PATCH 04/15] perf script python: add Python3 support to failed-syscalls-by-pid.py

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Date:   Mon, 25 Feb 2019 11:09:06 -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 04/15] perf script python: add Python3 support to
 failed-syscalls-by-pid.py

Em Fri, Feb 22, 2019 at 03:06:08PM -0800, Tony Jones escreveu:
> Support both Python2 and Python3 in the failed-syscalls-by-pid.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

Applied
 
> Signed-off-by: Tony Jones <tonyj@...e.de>
> Signed-off-by: Seeteena Thoufeek <s1seetee@...ux.vnet.ibm.com>
> Cc: Tom Zanussi <tzanussi@...il.com>
> ---
>  .../scripts/python/failed-syscalls-by-pid.py  | 21 ++++++++++---------
>  1 file changed, 11 insertions(+), 10 deletions(-)
> 
> diff --git a/tools/perf/scripts/python/failed-syscalls-by-pid.py b/tools/perf/scripts/python/failed-syscalls-by-pid.py
> index cafeff3d74db..3648e8b986ec 100644
> --- a/tools/perf/scripts/python/failed-syscalls-by-pid.py
> +++ b/tools/perf/scripts/python/failed-syscalls-by-pid.py
> @@ -5,6 +5,8 @@
>  # Displays system-wide failed system call totals, broken down by pid.
>  # If a [comm] arg is specified, only syscalls called by [comm] are displayed.
>  
> +from __future__ import print_function
> +
>  import os
>  import sys
>  
> @@ -32,7 +34,7 @@ if len(sys.argv) > 1:
>  syscalls = autodict()
>  
>  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():
>  	print_error_totals()
> @@ -57,22 +59,21 @@ def syscalls__sys_exit(event_name, context, common_cpu,
>  
>  def print_error_totals():
>      if for_comm is not None:
> -	    print "\nsyscall errors for %s:\n\n" % (for_comm),
> +	    print("\nsyscall errors for %s:\n" % (for_comm))
>      else:
> -	    print "\nsyscall errors:\n\n",
> +	    print("\nsyscall errors:\n")
>  
> -    print "%-30s  %10s\n" % ("comm [pid]", "count"),
> -    print "%-30s  %10s\n" % ("------------------------------", \
> -                                 "----------"),
> +    print("%-30s  %10s" % ("comm [pid]", "count"))
> +    print("%-30s  %10s" % ("------------------------------", "----------"))
>  
>      comm_keys = syscalls.keys()
>      for comm in comm_keys:
>  	    pid_keys = syscalls[comm].keys()
>  	    for pid in pid_keys:
> -		    print "\n%s [%d]\n" % (comm, pid),
> +		    print("\n%s [%d]" % (comm, pid))
>  		    id_keys = syscalls[comm][pid].keys()
>  		    for id in id_keys:
> -			    print "  syscall: %-16s\n" % syscall_name(id),
> +			    print("  syscall: %-16s" % syscall_name(id))
>  			    ret_keys = syscalls[comm][pid][id].keys()
> -			    for ret, val in sorted(syscalls[comm][pid][id].iteritems(), key = lambda(k, v): (v, k),  reverse = True):
> -				    print "    err = %-20s  %10d\n" % (strerror(ret), val),
> +			    for ret, val in sorted(syscalls[comm][pid][id].items(), key = lambda kv: (kv[1], kv[0]),  reverse = True):
> +				    print("    err = %-20s  %10d" % (strerror(ret), val))
> -- 
> 2.20.1

-- 

- Arnaldo