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| author | Dave Martin <dave.martin@linaro.org> | 2013-10-01 19:57:28 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-10-29 11:06:34 +0000 |
| commit | 1e5660999aa7703654ec345caaf06b83415dbdff (patch) | |
| tree | 56e734297369033a9c3d217f853a9501042caa72 /arch/arm/common/mcpm_platsmp.c | |
| parent | 49649cad34c29dc26ed928191425e6677ca07918 (diff) | |
| download | op-kernel-dev-1e5660999aa7703654ec345caaf06b83415dbdff.zip op-kernel-dev-1e5660999aa7703654ec345caaf06b83415dbdff.tar.gz | |
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.c | 17 |
1 files 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); |
