From: Tejun Heo <htejun@gmail.com>
To: Shaohua Li <shaohua.li@intel.com>,
Andrew Morton <akpm@linux-foundation.org>
Cc: Sam Ravnborg <sam@ravnborg.org>,
lkml <linux-kernel@vger.kernel.org>,
"hpa@zytor.com" <hpa@zytor.com>,
"eric.dumazet@gmail.com" <eric.dumazet@gmail.com>
Subject: Re: [patch 2/3] add new macros to make percpu readmostly section correctly align
Date: Tue, 28 Dec 2010 12:13:32 +0100 [thread overview]
Message-ID: <20101228111332.GE488@htj.dyndns.org> (raw)
In-Reply-To: <1293496017.10593.26.camel@sli10-conroe>
Hello,
On Tue, Dec 28, 2010 at 08:26:57AM +0800, Shaohua Li wrote:
> Subject: make readmostly section correctly align
>
> readmostly section should end at cache line aligned address, otherwise the last
> several data might share cachline with other data and make the readmostly data
> still have cache bounce.
> For example, in ia64, secpath_cachep is the last readmostly data, and it shares
> cacheline with init_uts_ns.
> a000000100e80480 d secpath_cachep
> a000000100e80488 D init_uts_ns
>
> Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Yeap, this looks good to me.
Acked-by: Tejun Heo <tj@kernel.org>
I can route this through percpu tree but think -mm is the better fit.
Andrew, can you please take this one?
Thank you.
--
tejun
prev parent reply other threads:[~2010-12-28 11:13 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-02 2:02 Shaohua Li
2010-12-10 15:14 ` Tejun Heo
2010-12-13 0:41 ` Shaohua Li
2010-12-13 9:47 ` Tejun Heo
2010-12-14 1:08 ` Shaohua Li
2010-12-14 9:58 ` Tejun Heo
2010-12-15 1:57 ` Shaohua Li
2010-12-15 14:08 ` Tejun Heo
2010-12-15 14:49 ` Tejun Heo
2010-12-16 0:55 ` Shaohua Li
2010-12-16 0:53 ` Shaohua Li
2010-12-16 5:46 ` Sam Ravnborg
2010-12-16 5:56 ` Shaohua Li
2010-12-16 9:50 ` Tejun Heo
2010-12-20 1:28 ` Shaohua Li
2010-12-20 15:55 ` Tejun Heo
2010-12-23 2:38 ` Shaohua Li
2010-12-27 12:14 ` Tejun Heo
2010-12-28 0:26 ` Shaohua Li
2010-12-28 11:13 ` Tejun Heo [this message]
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