lkml.org 
[lkml]   [2013]   [Jul]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v3 02/16] ARM: DT/kernel: define ARM specific arch_match_cpu_phys_id
On Mon, 22 Jul 2013, Sudeep KarkadaNagesha wrote:

> From: Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>
>
> OF/DT core library now provides architecture specific hook to match the
> logical cpu index with the corresponding physical identifier. Most of the
> cpu DT node parsing and initialisation is contained in devtree.c. So it's
> better to define ARM specific arch_match_cpu_phys_id there.
>
> This mainly helps to avoid replication of the code doing CPU node parsing
> and physical(MPIDR) to logical mapping.
>
> Cc: Russell King <linux@arm.linux.org.uk>
> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
> Acked-by: Rob Herring <rob.herring@calxeda.com>
> Signed-off-by: Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>

Acked-by: Nicolas Pitre <nico@linaro.org>


> ---
> arch/arm/kernel/devtree.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/arch/arm/kernel/devtree.c b/arch/arm/kernel/devtree.c
> index 5859c8b..2ee8a17 100644
> --- a/arch/arm/kernel/devtree.c
> +++ b/arch/arm/kernel/devtree.c
> @@ -169,6 +169,11 @@ void __init arm_dt_init_cpu_maps(void)
> }
> }
>
> +bool arch_match_cpu_phys_id(int cpu, u64 phys_id)
> +{
> + return (phys_id & MPIDR_HWID_BITMASK) == cpu_logical_map(cpu);
> +}
> +
> /**
> * setup_machine_fdt - Machine setup when an dtb was passed to the kernel
> * @dt_phys: physical address of dt blob
> --
> 1.8.1.2
>
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
>


\
 
 \ /
  Last update: 2013-07-22 17:41    [W:1.053 / U:0.328 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site