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SubjectRe: [PATCH v9 09/13] ARM: SoC: convert highbank to SoC descriptor
On 09/12/2012 09:58 AM, Arnd Bergmann wrote:
> From: Marc Zyngier <marc.zyngier@arm.com>
>
> Convert the highbank platform to use the SoC descriptor to provide
> its SMP and CPU hotplug operations.
>
> Cc: Rob Herring <rob.herring@calxeda.com>
> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---

Thanks for picking this up.

Acked-by: Rob Herring <rob.herring@calxeda.com>

Rob

> arch/arm/mach-highbank/core.h | 3 +++
> arch/arm/mach-highbank/highbank.c | 1 +
> arch/arm/mach-highbank/hotplug.c | 16 +---------------
> arch/arm/mach-highbank/platsmp.c | 18 ++++++++++++++----
> 4 files changed, 19 insertions(+), 19 deletions(-)
>
> diff --git a/arch/arm/mach-highbank/core.h b/arch/arm/mach-highbank/core.h
> index 141ed51..598ee78 100644
> --- a/arch/arm/mach-highbank/core.h
> +++ b/arch/arm/mach-highbank/core.h
> @@ -9,3 +9,6 @@ static inline void highbank_lluart_map_io(void) {}
> #endif
>
> extern void highbank_smc1(int fn, int arg);
> +extern void highbank_cpu_die(unsigned int cpu);
> +
> +extern struct smp_operations highbank_smp_ops;
> diff --git a/arch/arm/mach-highbank/highbank.c b/arch/arm/mach-highbank/highbank.c
> index d75b0a7..709bd72 100644
> --- a/arch/arm/mach-highbank/highbank.c
> +++ b/arch/arm/mach-highbank/highbank.c
> @@ -162,6 +162,7 @@ static const char *highbank_match[] __initconst = {
> };
>
> DT_MACHINE_START(HIGHBANK, "Highbank")
> + .smp = smp_ops(highbank_smp_ops),
> .map_io = highbank_map_io,
> .init_irq = highbank_init_irq,
> .timer = &highbank_timer,
> diff --git a/arch/arm/mach-highbank/hotplug.c b/arch/arm/mach-highbank/hotplug.c
> index 977cebb..1277da3 100644
> --- a/arch/arm/mach-highbank/hotplug.c
> +++ b/arch/arm/mach-highbank/hotplug.c
> @@ -24,16 +24,11 @@
>
> extern void secondary_startup(void);
>
> -int platform_cpu_kill(unsigned int cpu)
> -{
> - return 1;
> -}
> -
> /*
> * platform-specific code to shutdown a CPU
> *
> */
> -void platform_cpu_die(unsigned int cpu)
> +void highbank_cpu_die(unsigned int cpu)
> {
> flush_cache_all();
>
> @@ -45,12 +40,3 @@ void platform_cpu_die(unsigned int cpu)
> /* We should never return from idle */
> panic("highbank: cpu %d unexpectedly exit from shutdown\n", cpu);
> }
> -
> -int platform_cpu_disable(unsigned int cpu)
> -{
> - /*
> - * CPU0 should not be shut down via hotplug. cpu_idle can WFI
> - * or a proper shutdown or hibernate should be used.
> - */
> - return cpu == 0 ? -EPERM : 0;
> -}
> diff --git a/arch/arm/mach-highbank/platsmp.c b/arch/arm/mach-highbank/platsmp.c
> index d01364c..fa9560e 100644
> --- a/arch/arm/mach-highbank/platsmp.c
> +++ b/arch/arm/mach-highbank/platsmp.c
> @@ -25,12 +25,12 @@
>
> extern void secondary_startup(void);
>
> -void __cpuinit platform_secondary_init(unsigned int cpu)
> +static void __cpuinit highbank_secondary_init(unsigned int cpu)
> {
> gic_secondary_init(0);
> }
>
> -int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
> +static int __cpuinit highbank_boot_secondary(unsigned int cpu, struct task_struct *idle)
> {
> gic_raise_softirq(cpumask_of(cpu), 0);
> return 0;
> @@ -40,7 +40,7 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
> * Initialise the CPU possible map early - this describes the CPUs
> * which may be present or become present in the system.
> */
> -void __init smp_init_cpus(void)
> +static void __init highbank_smp_init_cpus(void)
> {
> unsigned int i, ncores;
>
> @@ -61,7 +61,7 @@ void __init smp_init_cpus(void)
> set_smp_cross_call(gic_raise_softirq);
> }
>
> -void __init platform_smp_prepare_cpus(unsigned int max_cpus)
> +static void __init highbank_smp_prepare_cpus(unsigned int max_cpus)
> {
> int i;
>
> @@ -76,3 +76,13 @@ void __init platform_smp_prepare_cpus(unsigned int max_cpus)
> for (i = 1; i < max_cpus; i++)
> highbank_set_cpu_jump(i, secondary_startup);
> }
> +
> +struct smp_operations highbank_smp_ops __initdata = {
> + .smp_init_cpus = highbank_smp_init_cpus,
> + .smp_prepare_cpus = highbank_smp_prepare_cpus,
> + .smp_secondary_init = highbank_secondary_init,
> + .smp_boot_secondary = highbank_boot_secondary,
> +#ifdef CONFIG_HOTPLUG_CPU
> + .cpu_die = highbank_cpu_die,
> +#endif
> +};
>



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