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From: Andrew Morton <akpm@osdl.org>
To: Denis Vlasenko <vda@port.imtp.ilyichevsk.odessa.ua>
Cc: anton@samba.org, linux-kernel@vger.kernel.org, jrsantos@austin.ibm.com
Subject: Re: [PATCH] remove cacheline alignment from inode slabs
Date: Sun, 15 Aug 2004 22:58:40 -0700	[thread overview]
Message-ID: <20040815225840.3ba8cdce.akpm@osdl.org> (raw)
In-Reply-To: <200408160825.42889.vda@port.imtp.ilyichevsk.odessa.ua>

Denis Vlasenko <vda@port.imtp.ilyichevsk.odessa.ua> wrote:
>
> +ifneq ($(CONFIG_CC_ALIGN_FUNCTIONS),0)
>  +CFLAGS		+= -falign-functions=$(CONFIG_CC_ALIGN_FUNCTIONS)
>  +endif
>  +ifneq ($(CONFIG_CC_ALIGN_LABELS),0)
>  +CFLAGS		+= -falign-labels=$(CONFIG_CC_ALIGN_LABELS)
>  +endif
>  +ifneq ($(CONFIG_CC_ALIGN_LOOPS),0)
>  +CFLAGS		+= -falign-loops=$(CONFIG_CC_ALIGN_LOOPS)
>  +endif
>  +ifneq ($(CONFIG_CC_ALIGN_JUMPS),0)
>  +CFLAGS		+= -falign-jumps=$(CONFIG_CC_ALIGN_JUMPS)
>  +endif

When sending optimisation patches, please include information on how
effective the optimisation is.  Before and after code sizes would be
appropriate here.

gcc-2.95.x barfs over all four of the above options.  Some testing of
$(GCC_VERSION) is needed.  That's only set up by arch/i386/Makefile at
present.


      parent reply	other threads:[~2004-08-16  6:00 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-08-15 23:37 [PATCH] remove cacheline alignment from inode slabs Anton Blanchard
     [not found] ` <200408160825.42889.vda@port.imtp.ilyichevsk.odessa.ua>
2004-08-16  5:58   ` Andrew Morton [this message]

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