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

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

Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Dave Martin 2013-10-01 19:57:28 +01:00 • committed by Russell King
parent 49649cad34
commit 1e5660999a
1 changed files with 14 additions and 5 deletions
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19
arch/arm/common/mcpm_platsmp.c
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@ -19,14 +19,23 @@
#include <asm/smp.h> #include <asm/smp.h>
#include <asm/smp_plat.h> #include <asm/smp_plat.h>
static int mcpm_boot_secondary(unsigned int cpu, struct task_struct *idle) static void cpu_to_pcpu(unsigned int cpu,
unsigned int *pcpu, unsigned int *pcluster)
{ {
unsigned int mpidr, pcpu, pcluster, ret; unsigned int mpidr;
extern void secondary_startup(void);
mpidr = cpu_logical_map(cpu); mpidr = cpu_logical_map(cpu);
pcpu = MPIDR_AFFINITY_LEVEL(mpidr, 0); *pcpu = MPIDR_AFFINITY_LEVEL(mpidr, 0);
pcluster = MPIDR_AFFINITY_LEVEL(mpidr, 1); *pcluster = MPIDR_AFFINITY_LEVEL(mpidr, 1);
}
static int mcpm_boot_secondary(unsigned int cpu, struct task_struct *idle)
{
unsigned int pcpu, pcluster, ret;
extern void secondary_startup(void);
cpu_to_pcpu(cpu, &pcpu, &pcluster);
pr_debug("%s: logical CPU %d is physical CPU %d cluster %d\n", pr_debug("%s: logical CPU %d is physical CPU %d cluster %d\n",
__func__, cpu, pcpu, pcluster); __func__, cpu, pcpu, pcluster);