linux-kernel - Re: [PATCH 2/5] tools lib api fs: Add tracefs mount helper functions

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Message-ID: <20150125165619.GF31987@krava.brq.redhat.com>
Date:	Sun, 25 Jan 2015 17:56:19 +0100
From:	Jiri Olsa <jolsa@...hat.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jiri Olsa <jolsa@...nel.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Namhyung Kim <namhyung@...nel.org>
Subject: Re: [PATCH 2/5] tools lib api fs: Add tracefs mount helper functions

On Sat, Jan 24, 2015 at 01:13:32PM -0500, Steven Rostedt wrote:

SNIP

> @@ -0,0 +1,29 @@
> +#ifndef __API_TRACEFS_H__
> +#define __API_TRACEFS_H__
> +
> +#define _STR(x) #x
> +#define STR(x) _STR(x)
> +
> +/*
> + * On most systems <limits.h> would have given us this, but  not on some systems
> + * (e.g. GNU/Hurd).
> + */
> +#ifndef PATH_MAX
> +#define PATH_MAX 4096
> +#endif
> +
> +#ifndef TRACEFS_MAGIC
> +#define TRACEFS_MAGIC          0x74726163
> +#endif

I missed the point when tracefs became actual standalone
filesystem.. I'll check ;-)

Is it mutualy exclusive to 'debugfs/tracing' or those 2 can live together?

jirka
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