linux-kernel - Re: [PATCH] Add a text

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Message-ID: <alpine.LRH.2.00.1311281009580.9932@twin.jikos.cz>
Date:	Thu, 28 Nov 2013 10:12:55 +0100 (CET)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	Andy Lutomirski <luto@...capital.net>,
	Andi Kleen <andi@...stfloor.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...nel.org>,
	Andi Kleen <ak@...ux.intel.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH] Add a text_poke syscall v2

On Wed, 27 Nov 2013, Linus Torvalds wrote:

> But is such batching really even worth it? If' it's not *that* much more 
> effort, maybe it's worth it, but do we have known users that really 
> would have thousands and thousands of cases all at once?

If you want to base tracing infrastructure on it, then you might easily 
want to patch all the existing functions. We have in-kernel facility 
(ftrace) doing exactly that.

-- 
Jiri Kosina
SUSE Labs

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