linux-kernel - Re: [PATCH 04/37] perf tools: Add multi file interface to perf_data

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Date:	Thu, 25 Dec 2014 23:08:30 +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 <a.p.zijlstra@...llo.nl>,
	LKML <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Stephane Eranian <eranian@...gle.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Andi Kleen <andi@...stfloor.org>,
	Frederic Weisbecker <fweisbec@...il.com>
Subject: Re: [PATCH 04/37] perf tools: Add multi file interface to
 perf_data_file

On Wed, Dec 24, 2014 at 04:15:00PM +0900, Namhyung Kim wrote:

SNIP

>  #endif /* __PERF_DATA_H */
> diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c
> index d5eab3f3323f..a5046d52e311 100644
> --- a/tools/perf/util/util.c
> +++ b/tools/perf/util/util.c
> @@ -72,6 +72,49 @@ int mkdir_p(char *path, mode_t mode)
>  	return (stat(path, &st) && mkdir(path, mode)) ? -1 : 0;
>  }
>  
> +int rm_rf(char *path)
> +{
> +	DIR *dir;
> +	int ret = 0;
> +	struct dirent *d;
> +	char namebuf[PATH_MAX];
> +
> +	dir = opendir(path);
> +	if (dir == NULL)
> +		return 0;
> +
> +	while ((d = readdir(dir)) != NULL && !ret) {
> +		struct stat statbuf;
> +
> +		if (d->d_name[0] == '.')
> +			continue;

Could you check for '.' and for '..' to support '.*' removal?

I know tha we will probably not have any '.*' files in perf.data.dir,
but this function could be used later like for total cache clean ;-)

also please submit 'rm_rf' in separate patch

thanks,
jirka
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