linux-kernel - Re: [PATCH] tools:perf:scripts:python:intel-pt-events del unusedvar

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Message-ID: <a6a2e8b1-7194-75f1-d59c-7c8bc059174a@intel.com>
Date:   Sat, 14 Jan 2023 09:24:03 +0200
From:   Adrian Hunter <adrian.hunter@...el.com>
To:     Alexander Pantyukhin <apantykhin@...il.com>, peterz@...radead.org,
        akpm@...ux-foundation.org
Cc:     mingo@...hat.com, namhyung@...nel.org, jolsa@...nel.org,
        acme@...nel.org, linux-perf-users@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tools:perf:scripts:python:intel-pt-events del unusedvar

On 6/01/23 23:56, Alexander Pantyukhin wrote:
> The event_attr is never used later, the var is ok be deleted.
> Additional code simplification is to substitute string slice comparison
> with "substring" function. This case no need to know the length specific
> words.
> 
> Signed-off-by: Alexander Pantyukhin <apantykhin@...il.com>
> ---
>  tools/perf/scripts/python/intel-pt-events.py | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/tools/perf/scripts/python/intel-pt-events.py b/tools/perf/scripts/python/intel-pt-events.py
> index 08862a2582f4..28d08e2fb7cd 100644
> --- a/tools/perf/scripts/python/intel-pt-events.py
> +++ b/tools/perf/scripts/python/intel-pt-events.py
> @@ -340,7 +340,6 @@ def print_srccode(comm, param_dict, sample, symbol, dso, with_insn):
>  	print(start_str, src_str)
>  
>  def do_process_event(param_dict):
> -	event_attr = param_dict["attr"]

Should really be moved to the "Unused fields:" comment
section a few lines below.

>  	sample	   = param_dict["sample"]
>  	raw_buf	   = param_dict["raw_buf"]
>  	comm	   = param_dict["comm"]
> @@ -359,13 +358,13 @@ def do_process_event(param_dict):
>  		print(glb_switch_str[cpu])
>  		del glb_switch_str[cpu]
>  
> -	if name[0:12] == "instructions":
> +	if name.startswith("instructions"):
>  		if glb_src:
>  			print_srccode(comm, param_dict, sample, symbol, dso, True)
>  		else:
>  			print_instructions_start(comm, sample)
>  			print_common_ip(param_dict, sample, symbol, dso)
> -	elif name[0:8] == "branches":
> +	elif name.startswith("branches"):
>  		if glb_src:
>  			print_srccode(comm, param_dict, sample, symbol, dso, False)
>  		else: