linux-kernel - Re: [PATCH RFC 3/6] perf dso: Add dso__data_write_cache

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Message-ID: <20191028154503.GB15449@krava>
Date:   Mon, 28 Oct 2019 16:45:03 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Adrian Hunter <adrian.hunter@...el.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H . Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Leo Yan <leo.yan@...aro.org>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH RFC 3/6] perf dso: Add dso__data_write_cache_addr()

On Fri, Oct 25, 2019 at 03:59:57PM +0300, Adrian Hunter wrote:
SNIP

>  
> -static ssize_t data_read_offset(struct dso *dso, struct machine *machine,
> -				u64 offset, u8 *data, ssize_t size)
> +static ssize_t data_read_write_offset(struct dso *dso, struct machine *machine,
> +				      u64 offset, u8 *data, ssize_t size,
> +				      bool out)
>  {
>  	if (dso__data_file_size(dso, machine))
>  		return -1;
> @@ -1034,7 +1037,7 @@ static ssize_t data_read_offset(struct dso *dso, struct machine *machine,
>  	if (offset + size < offset)
>  		return -1;
>  
> -	return cached_read(dso, machine, offset, data, size);
> +	return cached_io(dso, machine, offset, data, size, out);

you renamed the function as _read_write_ so the bool choosing
the opration should be named either read or write.. I had to
go all the way down to find out what 'out' means ;-)

jirka