[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <alpine.DEB.2.02.1401261308070.26515@chino.kir.corp.google.com>
Date: Sun, 26 Jan 2014 13:08:37 -0800 (PST)
From: David Rientjes <rientjes@...gle.com>
To: Yinghai Lu <yinghai@...nel.org>
cc: Ingo Molnar <mingo@...nel.org>, "H. Peter Anvin" <hpa@...or.com>,
Toshi Kani <toshi.kani@...com>,
Thomas Gleixner <tglx@...utronix.de>,
Andrew Morton <akpm@...ux-foundation.org>,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] x86, mm: Avoid duplicated pxm_to_node() calling.
On Sun, 26 Jan 2014, Yinghai Lu wrote:
> In slit init code, more pxm_to_node() calling are added.
>
> We can store from_node/to_node instead of keep calling pxm_to_node().
>
> After this patch: pxm_to_node() is called n*(1+n)
> Before this patch: pxm_to_node() is called n*(1+n*3)
>
> for 8 socket, it will be 72 instead of 200.
> for 32 socket, it will be 1056 instead of 3104.
>
> -v2: update title and change log according to Ingo.
> move from_node/to_node in loop and change to const according to
> David Rientjes.
>
> Signed-off-by: Yinghai Lu <yinghai@...nel.org>
Acked-by: David Rientjes <rientjes@...gle.com>
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists