From: Chris Wedgwood <cw@f00f.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: linux-kernel@vger.kernel.org, Andrew Morton <akpm@osdl.org>,
Arjan van de Ven <arjanv@infradead.org>
Subject: Re: [patch] compress the stack layout of do_page_fault(), x86
Date: Sat, 9 Jul 2005 20:35:59 -0700 [thread overview]
Message-ID: <20050710033559.GA31057@taniwha.stupidest.org> (raw)
In-Reply-To: <20050709144116.GA9444@elte.hu>
On Sat, Jul 09, 2005 at 04:41:16PM +0200, Ingo Molnar wrote:
> this patch pushes the creation of a rare signal frame (SIGBUS or
> SIGSEGV) into a separate function, thus saving stackspace in the
> main do_page_fault() stackframe. The effect is 132 bytes less of
> stack used by the typical do_page_fault() invocation - resulting in
> a denser cache-layout.
does the benefit actually show up anywhere?
next prev parent reply other threads:[~2005-07-10 3:36 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-07-09 14:41 Ingo Molnar
2005-07-09 15:29 ` Ingo Molnar
2005-07-09 16:44 ` randy_dunlap
2005-07-09 16:46 ` Ingo Molnar
2005-07-10 3:35 ` Chris Wedgwood [this message]
[not found] <20050709144116.GA9444@elte.hu.suse.lists.linux.kernel>
[not found] ` <20050709152924.GA13492@elte.hu.suse.lists.linux.kernel>
2005-07-09 17:05 ` Andi Kleen
2005-07-09 17:31 ` Arjan van de Ven
2005-07-09 19:15 ` Andi Kleen
2005-07-09 19:47 ` Arjan van de Ven
2005-07-09 19:42 ` Ingo Molnar
2005-07-10 16:13 ` Andi Kleen
2005-07-11 2:32 ` Ingo Molnar
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