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From: Ingo Molnar <mingo@elte.hu>
To: Nicolas Pitre <nico@cam.org>
Cc: lkml <linux-kernel@vger.kernel.org>,
	Arjan van de Ven <arjan@infradead.org>,
	Russell King <rmk+lkml@arm.linux.org.uk>
Subject: Re: [patch 2/3] mutex subsystem: fastpath inlining
Date: Tue, 27 Dec 2005 12:55:25 +0100	[thread overview]
Message-ID: <20051227115525.GC23587@elte.hu> (raw)
In-Reply-To: <Pine.LNX.4.64.0512261414300.1496@localhost.localdomain>


* Nicolas Pitre <nico@cam.org> wrote:

> Some architectures, notably ARM for instance, might benefit from 
> inlining the mutex fast paths. [...]

what is the effect on text size? Could you post the before- and 
after-patch vmlinux 'size kernel/test.o' output in the nondebug case, 
with Arjan's latest 'convert a couple of semaphore users to mutexes' 
patch applied? [make sure you've got enough of those users compiled in, 
so that the inlining cost is truly measured. Perhaps also do 
before/after 'size' output of a few affected .o files, without mixing 
kernel/mutex.o into it, like vmlinux does.]

	Ingo

  reply	other threads:[~2005-12-27 11:55 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-12-23 16:16 [patch 00/11] mutex subsystem, -V7 Ingo Molnar
2005-12-24  5:15 ` Nicolas Pitre
2005-12-24  5:23   ` Nicolas Pitre
2005-12-26 19:24 ` Nicolas Pitre
2005-12-26 19:25 ` [patch 1/3] mutex subsystem: trylock Nicolas Pitre
2005-12-27 11:51   ` Ingo Molnar
2005-12-27 20:47     ` Nicolas Pitre
2005-12-28  7:48       ` Ingo Molnar
2005-12-28  8:13         ` Ingo Molnar
2005-12-28 16:29           ` Nicolas Pitre
2005-12-28 17:09             ` Ingo Molnar
2005-12-27 12:05   ` Arjan van de Ven
2005-12-27 13:15     ` Ingo Molnar
2005-12-29  4:06       ` Nicolas Pitre
2005-12-29  8:33         ` Ingo Molnar
2005-12-29  9:01           ` Nick Piggin
2005-12-29 17:15             ` Nicolas Pitre
2005-12-30  2:05               ` Nick Piggin
2005-12-29 16:46           ` Nicolas Pitre
2005-12-29  3:22     ` Nicolas Pitre
2005-12-26 19:25 ` [patch 2/3] mutex subsystem: fastpath inlining Nicolas Pitre
2005-12-27 11:55   ` Ingo Molnar [this message]
2005-12-27 21:59     ` Nicolas Pitre
2005-12-28  7:41       ` Ingo Molnar
2005-12-29  2:53         ` Nicolas Pitre
2005-12-29  8:41           ` Ingo Molnar
2006-01-06 21:20             ` Nicolas Pitre
2005-12-26 19:26 ` [patch 3/3] mutex subsystem: inline mutex_is_locked() Nicolas Pitre
2005-12-27 11:37   ` Ingo Molnar

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