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From: Rusty Russell <rusty@rustcorp.com.au>
To: John Levon <levon@movementarian.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: size in /proc/modules
Date: Tue, 21 Jan 2003 17:44:21 +1100	[thread overview]
Message-ID: <20030121070114.A6A3D2C282@lists.samba.org> (raw)
In-Reply-To: Your message of "Mon, 20 Jan 2003 14:27:03 -0000." <20030120142703.GA58326@compsoc.man.ac.uk>

In message <20030120142703.GA58326@compsoc.man.ac.uk> you write:
> 
> /proc/modules size field includes init_size in 2.5. Why ?
> 
> The removal of sensible values in /proc/ksyms means that oprofile can no
> longer attribute module samples reliably. The only information we have
> is module_core address, and size == core_size+init_size. Since init code
> is removed in sys_init_module, this will overestimate, and can lead to
> overlapping with the start of another module, afaics.
> 
> In 2.4, we had size(.text), which could underestimate (think
> .text.exit), but that is not a big problem.
> 
> Rusty, does this fall under another one of your "corner cases" ? (what I
> would call "flaky code" ...)
> 
> Or I have I just missed something obvious ?

Yes, line 1328 of kernel/module.c, by the sound of it 8)

I was thinking of you when I added this, actually.

Hope that helps!
Rusty.
--
  Anyone who quotes me in their sig is an idiot. -- Rusty Russell.

      reply	other threads:[~2003-01-21  6:52 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-01-20 14:27 John Levon
2003-01-21  6:44 ` Rusty Russell [this message]

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