[RFC PATCH 1/3] ARM: mcpm: Factor out logical-to-physical CPU translation
From: Dave.Martin@arm.com (Dave Martin)
Date: 2013-09-30 15:06:45
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
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> --- arch/arm/common/mcpm_platsmp.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-)
diff --git a/arch/arm/common/mcpm_platsmp.c b/arch/arm/common/mcpm_platsmp.c
index 1bc34c7..c0c3cd7 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);
--
1.7.9.5