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Commit 1e566099 authored by Dave Martin's avatar Dave Martin Committed by Russell King
Browse files

ARM: 7847/1: mcpm: Factor out logical-to-physical CPU translation 



This patch factors the logical-to-physical CPU translation out of
mcpm_boot_secondary(), so that it can be reused elsewhere.

Signed-off-by: default avatarDave Martin <Dave.Martin@arm.com>
Acked-by: default avatarNicolas Pitre <nico@linaro.org>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 49649cad

arch/arm/common/mcpm_platsmp.c

+13 −4
Original line number Diff line number Diff line
@@ -19,14 +19,23 @@ 
#include <asm/smp.h>

#include <asm/smp_plat.h>



static void cpu_to_pcpu(unsigned int cpu,

			unsigned int *pcpu, unsigned int *pcluster)

{

	unsigned int mpidr;



	mpidr = cpu_logical_map(cpu);

	*pcpu = MPIDR_AFFINITY_LEVEL(mpidr, 0);

	*pcluster = MPIDR_AFFINITY_LEVEL(mpidr, 1);

}



static int mcpm_boot_secondary(unsigned int cpu, struct task_struct *idle)

{

	unsigned int mpidr, pcpu, pcluster, ret;

	unsigned int pcpu, pcluster, ret;

	extern void secondary_startup(void);



	mpidr = cpu_logical_map(cpu);

	pcpu = MPIDR_AFFINITY_LEVEL(mpidr, 0);

	pcluster = MPIDR_AFFINITY_LEVEL(mpidr, 1);

	cpu_to_pcpu(cpu, &pcpu, &pcluster);



	pr_debug("%s: logical CPU %d is physical CPU %d cluster %d\n",

		 __func__, cpu, pcpu, pcluster);