linux-kernel - Re: [PATCH 02/10] perf tools: Add perf_data_file_

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Message-ID: <20160415160057.GQ9056@kernel.org>
Date:	Fri, 15 Apr 2016 13:00:57 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	Wang Nan <wangnan0@...wei.com>, linux-kernel@...r.kernel.org,
	pi3orama@....com, He Kuang <hekuang@...wei.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Jiri Olsa <jolsa@...nel.org>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Zefan Li <lizefan@...wei.com>
Subject: Re: [PATCH 02/10] perf tools: Add perf_data_file__switch() helper

Em Fri, Apr 15, 2016 at 12:41:08PM +0200, Jiri Olsa escreveu:
> On Wed, Apr 13, 2016 at 08:21:05AM +0000, Wang Nan wrote:
> > perf_data_file__switch() closes current output file, renames it, then
> > open a new one to continue recording. It will be used by perf record
> > to split output into multiple perf.data files.
> > 
> > Signed-off-by: Wang Nan <wangnan0@...wei.com>
> > Signed-off-by: He Kuang <hekuang@...wei.com>
> > Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
> > Cc: Jiri Olsa <jolsa@...nel.org>
> > Cc: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
> > Cc: Namhyung Kim <namhyung@...nel.org>
> > Cc: Zefan Li <lizefan@...wei.com>
> > Cc: pi3orama@....com
> > ---
> >  tools/perf/util/data.c | 41 +++++++++++++++++++++++++++++++++++++++++
> >  tools/perf/util/data.h | 11 ++++++++++-
> >  2 files changed, 51 insertions(+), 1 deletion(-)
> > 
> > diff --git a/tools/perf/util/data.c b/tools/perf/util/data.c
> > index 1921942..be835161 100644
> > --- a/tools/perf/util/data.c
> > +++ b/tools/perf/util/data.c
> > @@ -136,3 +136,44 @@ ssize_t perf_data_file__write(struct perf_data_file *file,
> >  {
> >  	return writen(file->fd, buf, size);
> >  }
> > +
> > +int perf_data_file__switch(struct perf_data_file *file,
> > +			   const char *postfix,
> > +			   size_t pos, bool at_exit)
> 
> could you please rename at_exit to reopen
> 
> I guess you follow the record object's at_exit naming,
> but 'reopen' seems more clear to me
> 

I'll rename this, if not yet pushed to Ingo, checking...

- Arnaldo
> jirka