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Date: Thu, 18 May 2017 18:13:49 +0200
From: Jiri Olsa <jolsa@redhat.com>
To: David Carrillo-Cisneros <davidcc@google.com>
Cc: linux-kernel@vger.kernel.org, Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@redhat.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Andi Kleen <ak@linux.intel.com>, Simon Que <sque@chromium.org>,
        Wang Nan <wangnan0@huawei.com>, Jiri Olsa <jolsa@kernel.org>,
        He Kuang <hekuang@huawei.com>, Masami Hiramatsu <mhiramat@kernel.org>,
        David Ahern <dsa@cumulusnetworks.com>,
        Namhyung Kim <namhyung@kernel.org>,
        Stephane Eranian <eranian@google.com>, Paul Turner <pjt@google.com>
Subject: Re: [PATCH 7/7] perf tools: add feature header record to pipe-mode
Message-ID: <20170518161349.GG17926@krava>
References: <20170518041602.28689-1-davidcc@google.com>
 <20170518041602.28689-8-davidcc@google.com>
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On Wed, May 17, 2017 at 09:16:02PM -0700, David Carrillo-Cisneros wrote:

SNIP

>  
> @@ -2107,42 +2109,80 @@ struct feature_ops {
>  	int (*process)(struct feat_fd *fd, void *data);
>  	const char *name;
>  	bool full_only;
> +	int record_type;
>  };
>  
> -#define FEAT_OPA(n, func) \
> -	[n] = { .name = #n, .write = write_##func, .print = print_##func }
> -#define FEAT_OPP(n, func) \
> -	[n] = { .name = #n, .write = write_##func, .print = print_##func, \
> -		.process = process_##func }
> -#define FEAT_OPF(n, func) \
> -	[n] = { .name = #n, .write = write_##func, .print = print_##func, \
> -		.process = process_##func, .full_only = true }
> +#define FEAT_OPP(n, func, __full_only) \
> +	[HEADER_##n] = {					\
> +		.name = __stringify(HEADER_##n),		\
> +		.write = write_##func,				\
> +		.print = print_##func,				\
> +		.full_only = __full_only,			\
> +		.process = process_##func,			\
> +		.record_type = PERF_RECORD_HEADER_##n		\
> +	}
> +
> +#define FEAT_OPN(n, func, __full_only) \
> +	[HEADER_##n] = {					\
> +		.name = __stringify(HEADER_##n),		\
> +		.write = write_##func,				\
> +		.print = print_##func,				\
> +		.full_only = __full_only,			\
> +		.process = process_##func			\
> +	}

you're adding record_type, which should not be a reason
to rename FEAT_* macros.. please do that in the separate
patch and state reason in changelog

thanks,
jirka