linux-kernel - Re: [PATCH] perf tools: Fix variable name's inconsistency in hists__for

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Date:   Thu, 19 Dec 2019 09:51:06 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     "fujita.yuya@...itsu.com" <fujita.yuya@...itsu.com>
Cc:     'Peter Zijlstra' <peterz@...radead.org>,
        'Ingo Molnar' <mingo@...hat.com>,
        'Arnaldo Carvalho de Melo' <acme@...nel.org>,
        'Jiri Olsa' <jolsa@...nel.org>,
        "'linux-kernel@...r.kernel.org'" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] perf tools: Fix variable name's inconsistency in
 hists__for_each macro

On Thu, Dec 19, 2019 at 08:08:32AM +0000, fujita.yuya@...itsu.com wrote:
> From: Yuya Fujita <fujita.yuya@...itsu.com>
> 
> Variable names are inconsistent in hists__for_each macro.
> Due to this inconsistency, the macro replaces its second argument with "fmt" 
> regardless of its original name.
> So far it works because only "fmt" is passed to the second argument.

hum, I think it works because all the instances that use these macros
have 'fmt' variable passed in

> However, this behavior is not expected and should be fixed.
> 
> Fixes: f0786af536bb ("perf hists: Introduce hists__for_each_format macro")
> Fixes: aa6f50af822a ("perf hists: Introduce hists__for_each_sort_list macro")

nice ;-)

Acked-by: Jiri Olsa <jolsa@...nel.org>

thanks,
jirka

> Signed-off-by: Yuya Fujita <fujita.yuya@...itsu.com>
> ---
>  tools/perf/util/hist.h |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
> index 4528690..0aa63ae 100644
> --- a/tools/perf/util/hist.h
> +++ b/tools/perf/util/hist.h
> @@ -339,10 +339,10 @@ static inline void perf_hpp__prepend_sort_field(struct perf_hpp_fmt *format)
>  	list_for_each_entry_safe(format, tmp, &(_list)->sorts, sort_list)
>  
>  #define hists__for_each_format(hists, format) \
> -	perf_hpp_list__for_each_format((hists)->hpp_list, fmt)
> +	perf_hpp_list__for_each_format((hists)->hpp_list, format)
>  
>  #define hists__for_each_sort_list(hists, format) \
> -	perf_hpp_list__for_each_sort_list((hists)->hpp_list, fmt)
> +	perf_hpp_list__for_each_sort_list((hists)->hpp_list, format)
>  
>  extern struct perf_hpp_fmt perf_hpp__format[];
>  
> -- 
> 1.7.1
>