From: Sam Ravnborg <sam@ravnborg.org>
To: Tim Abbott <tabbott@MIT.EDU>,
Christoph Lameter <cl@linux-foundation.org>
Cc: linux-mips@linux-mips.org, linux-m68k@vger.kernel.org,
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Linus Torvalds <torvalds@linux-foundation.org>,
"David S. Miller" <davem@davemloft.net>
Subject: Re: [PATCH 6/6] Add support for __read_mostly to linux/cache.h
Date: Fri, 1 May 2009 11:44:07 +0200 [thread overview]
Message-ID: <20090501094407.GD18326@uranus.ravnborg.org> (raw)
In-Reply-To: <1241119956-31453-7-git-send-email-tabbott@mit.edu>
On Thu, Apr 30, 2009 at 03:32:36PM -0400, Tim Abbott wrote:
> Signed-off-by: Tim Abbott <tabbott@mit.edu>
> ---
> include/linux/cache.h | 6 ++++++
> 1 files changed, 6 insertions(+), 0 deletions(-)
>
> diff --git a/include/linux/cache.h b/include/linux/cache.h
> index 97e2488..99d8a6f 100644
> --- a/include/linux/cache.h
> +++ b/include/linux/cache.h
> @@ -13,7 +13,13 @@
> #endif
>
> #ifndef __read_mostly
> +#ifdef CONFIG_HAVE_READ_MOSTLY_DATA
> +#define __read_mostly __attribute__((__section__(".data.read_mostly")))
> +#define __READ_MOSTLY .section ".data.read_mostly", "aw"
> +#else
> #define __read_mostly
> +#define __READ_MOSTLY
> +#endif /* CONFIG_HAVE_READ_MOSTLY_DATA */
> #endif
Are there any specific reason why we do not support read_mostly on all
architectures?
read_mostly is about grouping rarely written data together
so what is needed is to introduce this section in the remaining
archtectures.
Christoph - git log says you did the inital implmentation.
Do you agree?
Sam
next prev parent reply other threads:[~2009-05-01 9:42 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-30 19:32 [PATCH 0/6] macros for section name cleanup Tim Abbott
2009-04-30 19:32 ` [PATCH 1/6] Add new macros for page-aligned data and bss sections Tim Abbott
2009-04-30 19:32 ` [PATCH 2/6] Add new NOSAVE_DATA linker script macro Tim Abbott
2009-04-30 19:32 ` [PATCH 3/6] Add new CACHELINE_ALIGNED_DATA " Tim Abbott
2009-04-30 19:32 ` [PATCH 4/6] Add new INIT_TASK_DATA() " Tim Abbott
2009-04-30 19:32 ` [PATCH 5/6] Add new READ_MOSTLY_DATA(align) " Tim Abbott
2009-04-30 19:32 ` [PATCH 6/6] Add support for __read_mostly to linux/cache.h Tim Abbott
2009-05-01 9:44 ` Sam Ravnborg [this message]
2009-05-01 13:52 ` Christoph Lameter
2009-05-01 21:47 ` [microblaze-uclinux] " Edgar E. Iglesias
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