From: Simon Horman <horms@verge.net.au>
To: linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 1/2] ARM: SH-Mobile: sh73a0: Secondary CPUs handle own SCU flags
Date: Fri, 14 Dec 2012 13:47:19 +0000 [thread overview]
Message-ID: <20121214134719.GK16382@verge.net.au> (raw)
In-Reply-To: <CANqRtoR-HeWVgWsL654aVEx9BuHKBpSVXzRYBZY9=1JZFi267g@mail.gmail.com>
On Fri, Dec 14, 2012 at 12:20:29PM +0900, Magnus Damm wrote:
> On Thu, Dec 6, 2012 at 9:08 PM, Bastian Hecht <hechtb@gmail.com> wrote:
> > From: Bastian Hecht <hechtb@gmail.com>
> >
> > When booting secondary CPUs we have used the main CPU to set up the
> > Snoop Control Unit flags of these CPUs. It is a cleaner approach
> > if every CPU takes care of its own flags. We avoid the need for
> > locking and the program logic is more concise. With this patch the file
> > headsmp-sh73a0.S is added that contains a startup vector for secondary CPUs
> > that sets up its own SCU flags.
> > Further in sh73a0_smp_prepare_cpus() we can rely on the generic ARM helper
> > scu_power_mode(). This is possible as we don't cross borders anymore (every
> > CPU handles its own flags) and need no locking. So we can throw out the
> > needless function modify_scu_cpu_psr().
> >
> > Signed-off-by: Bastian Hecht <hechtb+renesas@gmail.com>
>
> Acked-by: Magnus Damm <damm@opensource.se>
Hi Bastian,
could you please re-spin this series on top of the soc5 or next
branches of my renesas tree on kernel.org?
Feel free to include Magnus's Ack unless you make any
non-trivial changes.
Thanks:wq
next prev parent reply other threads:[~2012-12-14 13:47 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-06 12:08 [PATCH 1/2] ARM: SH-Mobile: sh73a0: Secondary CPUs handle own SCU flags Bastian Hecht
2012-12-06 12:08 ` [PATCH 2/2] ARM: SH-Mobile: sh73a0: Add CPU Hotplug Bastian Hecht
2012-12-14 3:21 ` Magnus Damm
2012-12-14 14:17 ` Rob Herring
2012-12-14 15:33 ` Bastian Hecht
2012-12-14 18:08 ` Rob Herring
2012-12-17 11:01 ` Bastian Hecht
2012-12-14 3:20 ` [PATCH 1/2] ARM: SH-Mobile: sh73a0: Secondary CPUs handle own SCU flags Magnus Damm
2012-12-14 13:47 ` Simon Horman [this message]
2012-12-14 14:06 ` Rob Herring
2012-12-14 15:07 ` Bastian Hecht
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