linux-kernel - Re: [PATCH tracing/kprobes v4] perf: Add perf probe subcommand for kprobe-event setup helper

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Message-ID: <20091012180300.GC5059@nowhere>
Date:	Mon, 12 Oct 2009 20:03:01 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Masami Hiramatsu <mhiramat@...hat.com>
Cc:	Steven Rostedt <rostedt@...dmis.org>, Ingo Molnar <mingo@...e.hu>,
	lkml <linux-kernel@...r.kernel.org>,
	systemtap <systemtap@...rces.redhat.com>,
	DLE <dle-develop@...ts.sourceforge.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Mike Galbraith <efault@....de>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Christoph Hellwig <hch@...radead.org>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	Jim Keniston <jkenisto@...ibm.com>,
	"Frank Ch. Eigler" <fche@...hat.com>
Subject: Re: [PATCH tracing/kprobes v4] perf: Add perf probe subcommand for
	kprobe-event setup helper

On Thu, Oct 08, 2009 at 05:17:38PM -0400, Masami Hiramatsu wrote:
> +static void semantic_error(const char *msg)
> +{
> +	fprintf(stderr, "Semantic error: %s\n", msg);
> +	exit(1);
> +}
> +
> +static void perror_exit(const char *msg)
> +{
> +	perror(msg);
> +	exit(1);
> +}



We have that already btw:

tools/perf/util/util.h:
	extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));


> +static void msg_exit(int ret, const char *fmt, ...)
> +{
> +	va_list ap;
> +
> +	va_start(ap, fmt);
> +	fprintf(stderr, "Error:  ");
> +	vfprintf(stderr, fmt, ap);
> +	va_end(ap);
> +
> +	fprintf(stderr, "\n");
> +	exit(ret);
> +}


And somehow ditto :)

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