linux-kernel - Re: [PATCH v13 5/8] perf record: Read from overwritable ring buffer

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Message-ID: <20160706113710.GC26517@krava>
Date:	Wed, 6 Jul 2016 13:37:10 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Wang Nan <wangnan0@...wei.com>
Cc:	acme@...nel.org, linux-kernel@...r.kernel.org, pi3orama@....com,
	lizefan@...wei.com, He Kuang <hekuang@...wei.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Jiri Olsa <jolsa@...nel.org>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Nilay Vaish <nilayvaish@...il.com>
Subject: Re: [PATCH v13 5/8] perf record: Read from overwritable ring buffer

On Mon, Jul 04, 2016 at 06:20:06AM +0000, Wang Nan wrote:

SNIP

> @@ -463,6 +488,7 @@ try_again:
>  
>  	session->evlist = evlist;
>  	perf_session__set_id_hdr_size(session);
> +	rec->overwrite_evt_state = OVERWRITE_EVT_RUNNING;
>  out:
>  	return rc;
>  }
> @@ -543,6 +569,79 @@ static struct perf_event_header finished_round_event = {
>  	.type = PERF_RECORD_FINISHED_ROUND,
>  };
>  
> +static void
> +record__toggle_overwrite_evsels(struct record *rec,
> +				enum overwrite_evt_state state)
> +{

record__toggle_overwrite_evlist might be better name

jirka