linux-kernel - Re: [PATCH 11/13] perf tests: Allow reuse of test

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Message-ID: <538DD2E3.2090407@gmail.com>
Date:	Tue, 03 Jun 2014 07:51:31 -0600
From:	David Ahern <dsahern@...il.com>
To:	Jiri Olsa <jolsa@...nel.org>, linux-kernel@...r.kernel.org
CC:	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	Jean Pihet <jean.pihet@...aro.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [PATCH 11/13] perf tests: Allow reuse of test_file function

On 6/2/14, 3:18 PM, Jiri Olsa wrote:
> Making the test_file function to be reusable for
> new tests coming in following patches.
>
> Cc: Arnaldo Carvalho de Melo <acme@...nel.org>
> Cc: Corey Ashford <cjashfor@...ux.vnet.ibm.com>
> Cc: David Ahern <dsahern@...il.com>
> Cc: Frederic Weisbecker <fweisbec@...il.com>
> Cc: Ingo Molnar <mingo@...nel.org>
> Cc: Jean Pihet <jean.pihet@...aro.org>
> Cc: Namhyung Kim <namhyung@...nel.org>
> Cc: Paul Mackerras <paulus@...ba.org>
> Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
> Signed-off-by: Jiri Olsa <jolsa@...nel.org>
> ---
>   tools/perf/tests/dso-data.c | 6 +++++-
>   1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/tools/perf/tests/dso-data.c b/tools/perf/tests/dso-data.c
> index 3e6cb17..f5c8743 100644
> --- a/tools/perf/tests/dso-data.c
> +++ b/tools/perf/tests/dso-data.c
> @@ -12,11 +12,15 @@
>
>   static char *test_file(int size)
>   {
> -	static char buf_templ[] = "/tmp/test-XXXXXX";
> +#define TEMPL "/tmp/test-XXXXXX"

use /tmp/perf-test-XXXXXX or /tmp/perf-XXXXXX to we know where all these 
tmp files came from.

> +	static char buf_templ[sizeof(TEMPL)];

why static? and ...

>   	char *templ = buf_templ;
>   	int fd, i;
>   	unsigned char *buf;
>
> +	strcpy(buf_templ, TEMPL);
> +#undef TEMPL

why the need to change from char buf_templ[] to strcpy?

David
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