linux-kernel - Re: [GIT PULL] tracing: make signal tracepoints more useful

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Message-ID: <CA+55aFwBW3abeSGoRMZBKERmSKk76Xm+uv7N+ZajvqOyv=aH3g@mail.gmail.com>
Date:	Tue, 17 Jan 2012 10:50:51 -0800
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Oleg Nesterov <oleg@...hat.com>
Cc:	Ingo Molnar <mingo@...e.hu>, Steven Rostedt <rostedt@...dmis.org>,
	Ingo Molnar <mingo@...hat.com>,
	Masami Hiramatsu <mhiramat@...hat.com>,
	Seiji Aguchi <saguchi@...hat.com>,
	linux-kernel@...r.kernel.org,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Subject: Re: [GIT PULL] tracing: make signal tracepoints more useful

On Mon, Jan 16, 2012 at 7:10 AM, Oleg Nesterov <oleg@...hat.com> wrote:
>
> But do we really need to keep the old tracepoint? IOW, what if
> we simply rename it and add more info?

Quite frankly, unless somebody can point to something that breaks, I'd
rather just change the existing one.

Nobody outside of a few special cases uses tracepoints. *nobody*.  The
only apps I have ever seen that matters to anybody ends up being
latencytop and powertop. If those two have been tested and don't care,
I don't think we should care.

                       Linus
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