linux-kernel - Re: [PATCH 3/4] perf record: Remove post_processing

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Date:	Thu, 7 Nov 2013 09:04:18 +0100
From:	Ingo Molnar <mingo@...nel.org>
To:	David Ahern <dsahern@...il.com>
Cc:	acme@...stprotocols.net, linux-kernel@...r.kernel.org,
	jolsa@...hat.com, Frederic Weisbecker <fweisbec@...il.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Mike Galbraith <efault@....de>,
	Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH 3/4] perf record: Remove post_processing_offset variable


* David Ahern <dsahern@...il.com> wrote:

> Duplicates the data_offset from header in the session.
> 
> Signed-off-by: David Ahern <dsahern@...il.com>
> Cc: Ingo Molnar <mingo@...nel.org>
> Cc: Frederic Weisbecker <fweisbec@...il.com>
> Cc: Peter Zijlstra <peterz@...radead.org>
> Cc: Jiri Olsa <jolsa@...hat.com>
> Cc: Namhyung Kim <namhyung@...nel.org>
> Cc: Mike Galbraith <efault@....de>
> Cc: Stephane Eranian <eranian@...gle.com>
> ---
>  tools/perf/builtin-record.c | 8 +++-----
>  1 file changed, 3 insertions(+), 5 deletions(-)
> 
> diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
> index 19c4db6bdd6f..15280b5e5574 100644
> --- a/tools/perf/builtin-record.c
> +++ b/tools/perf/builtin-record.c
> @@ -74,7 +74,6 @@ struct perf_record {
>  	bool			no_buildid;
>  	bool			no_buildid_cache;
>  	long			samples;
> -	off_t			post_processing_offset;
>  };
>  
>  static int write_output(struct perf_record *rec, void *buf, size_t size)
> @@ -247,13 +246,14 @@ static int process_buildids(struct perf_record *rec)
>  {
>  	struct perf_data_file *file  = &rec->file;
>  	struct perf_session *session = rec->session;
> +	u64 start = session->header.data_offset;
>  
>  	u64 size = lseek(file->fd, 0, SEEK_CUR);
>  	if (size == 0)
>  		return 0;
>  
> -	return __perf_session__process_events(session, rec->post_processing_offset,
> -					      size - rec->post_processing_offset,
> +	return __perf_session__process_events(session, start,
> +					      size - start,
>  					      size, &build_id__mark_dso_hit_ops);
>  }
>  
> @@ -429,8 +429,6 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv)
>  		goto out_delete_session;
>  	}
>  
> -	rec->post_processing_offset = lseek(file->fd, 0, SEEK_CUR);
> -
>  	machine = &session->machines.host;
>  
>  	if (file->is_pipe) {
> -- 
> 1.8.3.4 (Apple Git-47)

Acked-by: Ingo Molnar <mingo@...nel.org>

Thanks,

	Ingo
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