linux-kernel - Re: [PATCH 07/10] perf tools: Add 'trace' sort key

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Date:	Tue, 22 Dec 2015 08:22:03 +0100
From:	Jiri Olsa <jolsa@...hat.com>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	LKML <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Andi Kleen <andi@...stfloor.org>,
	Wang Nan <wangnan0@...wei.com>
Subject: Re: [PATCH 07/10] perf tools: Add 'trace' sort key

On Mon, Dec 21, 2015 at 11:26:50PM +0900, Namhyung Kim wrote:

SNIP

> diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
> index e28d26d0e73c..50a6b35a2fee 100644
> --- a/tools/perf/util/sort.c
> +++ b/tools/perf/util/sort.c
> @@ -445,6 +445,65 @@ struct sort_entry sort_socket = {
>  	.se_width_idx	= HISTC_SOCKET,
>  };
>  
> +/* --sort trace */
> +
> +static char *get_trace_output(struct hist_entry *he)
> +{
> +	struct trace_seq seq;
> +	struct perf_evsel *evsel;
> +	struct pevent_record rec = {
> +		.data = he->raw_data,
> +		.size = he->raw_size,
> +	};
> +
> +	evsel = hists_to_evsel(he->hists);
> +
> +	trace_seq_init(&seq);
> +	pevent_event_info(&seq, evsel->tp_format, &rec);
> +	return seq.buffer;
> +}

this function could be global and used in previous patch
in update_dynamic_len for trace_output?

hum, one's using evsel->tp_format and the other field->event,
I can't recall if both point to the same stuff..

jirka
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