These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / arch / arm64 / include / asm / smp_plat.h

diff --git a/kernel/arch/arm64/include/asm/smp_plat.h b/kernel/arch/arm64/include/asm/smp_plat.h
index 8dcd61e..af58dcd 100644 (file)
--- a/kernel/arch/arm64/include/asm/smp_plat.h
+++ b/kernel/arch/arm64/include/asm/smp_plat.h
@@ -19,6 +19,8 @@
 #ifndef __ASM_SMP_PLAT_H
 #define __ASM_SMP_PLAT_H
 
+#include <linux/cpumask.h>
+
 #include <asm/types.h>
 
 struct mpidr_hash {
@@ -39,7 +41,19 @@ static inline u32 mpidr_hash_size(void)
  */
 extern u64 __cpu_logical_map[NR_CPUS];
 #define cpu_logical_map(cpu)    __cpu_logical_map[cpu]
-
-void __init do_post_cpus_up_work(void);
+/*
+ * Retrieve logical cpu index corresponding to a given MPIDR.Aff*
+ *  - mpidr: MPIDR.Aff* bits to be used for the look-up
+ *
+ * Returns the cpu logical index or -EINVAL on look-up error
+ */
+static inline int get_logical_index(u64 mpidr)
+{
+       int cpu;
+       for (cpu = 0; cpu < nr_cpu_ids; cpu++)
+               if (cpu_logical_map(cpu) == mpidr)
+                       return cpu;
+       return -EINVAL;
+}
 
 #endif /* __ASM_SMP_PLAT_H */