linux-kernel - Re: [PATCH 2/4] modules: Ensure 64-bit alignment on __ksymtab

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Message-ID: <Za64mVrm528kYoCW@bombadil.infradead.org>
Date: Mon, 22 Jan 2024 10:48:57 -0800
From: Luis Chamberlain <mcgrof@...nel.org>
To: Helge Deller <deller@....de>
Cc: deller@...nel.org, linux-kernel@...r.kernel.org,
	Masahiro Yamada <masahiroy@...nel.org>,
	Arnd Bergmann <arnd@...db.de>, linux-modules@...r.kernel.org,
	linux-arch@...r.kernel.org
Subject: Re: [PATCH 2/4] modules: Ensure 64-bit alignment on __ksymtab_*
 sections

On Mon, Jan 22, 2024 at 05:47:49PM +0100, Helge Deller wrote:
> On 1/22/24 17:10, Luis Chamberlain wrote:
> > 
> > It's within the noise for x86_64, but given what you suggest
> > for parisc where it is much more expensive, we should see a non-noise
> > delta. Even just time on loading the module should likely result in
> > a considerable delta than on x86_64. You may just need to play a bit
> > with the default values at build time.
> 
> I don't know if it will be a "considerable" amount of time.

There are variables which you can tune, so given what you suggest
it should be possible to get to that spot rather easily with a few
changes to the default values I think.

> > If you don't feel like doing that test that's fine too, we can just
> > ignore that.
> 
> I can do that test, but I won't have time for that in the next few weeks...

I would appreciate it!

  Luis