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authorDave Martin <dave.martin@linaro.org>2013-10-01 19:57:28 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2013-10-29 11:06:34 +0000
commit1e5660999aa7703654ec345caaf06b83415dbdff (patch)
tree56e734297369033a9c3d217f853a9501042caa72 /arch/arm/common/mcpm_platsmp.c
parent49649cad34c29dc26ed928191425e6677ca07918 (diff)
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: Dave Martin <Dave.Martin@arm.com> Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/common/mcpm_platsmp.c')
-rw-r--r--arch/arm/common/mcpm_platsmp.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/arch/arm/common/mcpm_platsmp.c b/arch/arm/common/mcpm_platsmp.c
index 1bc34c7567fd..c0c3cd799ccc 100644
--- a/arch/arm/common/mcpm_platsmp.c
+++ b/arch/arm/common/mcpm_platsmp.c
@@ -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);