linux-kernel - Re: [PATCH 03/10] jump label v11: base patch

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Message-ID: <0e1f6b339e72a449fed0df7b801da607.squirrel@www.firstfloor.org>
Date:	Tue, 21 Sep 2010 16:41:19 +0200
From:	"Andi Kleen" <andi@...stfloor.org>
To:	"Jason Baron" <jbaron@...hat.com>
Cc:	"Andi Kleen" <andi@...stfloor.org>, linux-kernel@...r.kernel.org,
	mingo@...e.hu, mathieu.desnoyers@...ymtl.ca, hpa@...or.com,
	tglx@...utronix.de, rostedt@...dmis.org, roland@...hat.com,
	rth@...hat.com, mhiramat@...hat.com, fweisbec@...il.com,
	avi@...hat.com, davem@...emloft.net, vgoyal@...hat.com,
	sam@...nborg.org, tony@...eyournoodle.com
Subject: Re: [PATCH 03/10] jump label v11: base patch


>
> So there are ~150 tracepoints, but this code is also being proposed for
> use with 'dynamic debug' of which there are > 1000, and I'm hoping for
> more users moving forward.

Even 1000 is fine to walk, but if it was sorted a binary search
would be much faster anyways. That is then you would still
need to search for each module, but that is a relatively small
number (< 100)

> Also, I think the hash table deals nicely with modules.

Maybe but it's also a lot of code. And it seems to me
that it is optimizing the wrong thing. Simpler is nicer.

-Andi

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