From: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
To: Sam Ravnborg <sam@ravnborg.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Richard Henderson <rth@twiddle.net>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] alpha: link failure fix
Date: Tue, 24 Jun 2008 16:36:45 +0400 [thread overview]
Message-ID: <20080624123645.GA5237@jurassic.park.msu.ru> (raw)
In-Reply-To: <20080621201742.GA2061@uranus.ravnborg.org>
On Sat, Jun 21, 2008 at 10:17:42PM +0200, Sam Ravnborg wrote:
> Most other architectures would only notice when the exit function
> is called because they do late discardning og the exit section.
> alpha (and sparc) are some of the few architectures that discard exit
> section at link time thus you will see this much sooner
> than the others.
Ah, indeed. Then it's not so critical on x86 and others.
> Are the any size penalties here?
Just checked: quite the contrary, on alpha with -fno-jump-tables
resulting kernel image is a few kilobytes smaller (~17Kb in my config,
vmlinux is ~5Mb).
> I assume there are a minimal performance penalty.
Yeah, I don't think there are lots of big switch statements in the
hot paths.
Ivan.
prev parent reply other threads:[~2008-06-24 12:36 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-20 23:26 Ivan Kokshaysky
2008-06-21 20:17 ` Sam Ravnborg
2008-06-24 12:36 ` Ivan Kokshaysky [this message]
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