linux-kernel - Re: [PATCH v5 1/3] arm: introduce psci_smp

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Message-ID: <20130402164638.GG6608@mudshark.cambridge.arm.com>
Date:	Tue, 2 Apr 2013 17:46:38 +0100
From:	Will Deacon <will.deacon@....com>
To:	Stefano Stabellini <stefano.stabellini@...citrix.com>
Cc:	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"arnd@...db.de" <arnd@...db.de>,
	"nicolas.pitre@...aro.org" <nicolas.pitre@...aro.org>,
	"rob.herring@...xeda.com" <rob.herring@...xeda.com>,
	Marc Zyngier <Marc.Zyngier@....com>,
	"linux@....linux.org.uk" <linux@....linux.org.uk>,
	"nico@...aro.org" <nico@...aro.org>
Subject: Re: [PATCH v5 1/3] arm: introduce psci_smp_ops

On Tue, Apr 02, 2013 at 05:16:12PM +0100, Stefano Stabellini wrote:
> Rename virt_smp_ops to psci_smp_ops and move them to arch/arm/kernel/psci_smp.c.
> Remove mach-virt/platsmp.c, now unused.
> Compile psci_smp if CONFIG_ARM_PSCI and CONFIG_SMP.
> 
> Add a cpu_die smp_op based on psci_ops.cpu_off.
> 
> Initialize PSCI before setting smp_ops in setup_arch.
> Use psci_smp_ops if the platform doesn't provide its own smp_ops.
> 
> 
> Changes in v5:
> - document psci_operations;
> - psci_init returns NULL.
> 
> 
> Signed-off-by: Stefano Stabellini <stefano.stabellini@...citrix.com>
> Acked-by: Nicolas Pitre <nico@...aro.org>
> Acked-by: Rob Herring <rob.herring@...xeda.com>
> 
> CC: will.deacon@....com
> CC: arnd@...db.de
> CC: marc.zyngier@....com
> CC: linux@....linux.org.uk
> CC: nico@...aro.org
> ---
>  arch/arm/include/asm/psci.h  |   29 ++++++++++++++++++
>  arch/arm/kernel/Makefile     |    5 ++-
>  arch/arm/kernel/psci.c       |    7 ++--
>  arch/arm/kernel/psci_smp.c   |   67 ++++++++++++++++++++++++++++++++++++++++++
>  arch/arm/kernel/setup.c      |    7 ++++-
>  arch/arm/mach-virt/Makefile  |    1 -
>  arch/arm/mach-virt/platsmp.c |   58 ------------------------------------
>  arch/arm/mach-virt/virt.c    |    3 --
>  8 files changed, 109 insertions(+), 68 deletions(-)
>  create mode 100644 arch/arm/kernel/psci_smp.c
>  delete mode 100644 arch/arm/mach-virt/platsmp.c

Reviewed-by: Will Deacon <will.deacon@....com>

Will
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