ARM: 8130/1: cpuidle/cpuidle-big_little: fix reading cpu id part number

[pandora-kernel.git] / arch / arm / include / asm / smp_plat.h

diff --git a/arch/arm/include/asm/smp_plat.h b/arch/arm/include/asm/smp_plat.h
index a252c0b..0ad7d49 100644 (file)
--- a/arch/arm/include/asm/smp_plat.h
+++ b/arch/arm/include/asm/smp_plat.h
@@ -8,6 +8,7 @@
 #include <linux/cpumask.h>
 #include <linux/err.h>
 
+#include <asm/cpu.h>
 #include <asm/cputype.h>
 
 /*
@@ -25,6 +26,20 @@ static inline bool is_smp(void)
 #endif
 }
 
+/**
+ * smp_cpuid_part() - return part id for a given cpu
+ * @cpu:       logical cpu id.
+ *
+ * Return: part id of logical cpu passed as argument.
+ */
+static inline unsigned int smp_cpuid_part(int cpu)
+{
+       struct cpuinfo_arm *cpu_info = &per_cpu(cpu_data, cpu);
+
+       return is_smp() ? cpu_info->cpuid & ARM_CPU_PART_MASK :
+                         read_cpuid_part();
+}
+
 /* all SMP configurations have the extended CPUID registers */
 #ifndef CONFIG_MMU
 #define tlb_ops_need_broadcast()       0