1 files changed, 84 insertions, 0 deletions
diff --git a/arch/s390/include/asm/topology.h b/arch/s390/include/asm/topology.h
new file mode 100644
index 00000000..0837de80
--- /dev/null
+++ b/arch/s390/include/asm/topology.h
@@ -0,0 +1,84 @@
+#ifndef _ASM_S390_TOPOLOGY_H
+#define _ASM_S390_TOPOLOGY_H
+
+#include <linux/cpumask.h>
+#include <asm/sysinfo.h>
+
+struct cpu;
+
+#ifdef CONFIG_SCHED_BOOK
+
+extern unsigned char cpu_core_id[NR_CPUS];
+extern cpumask_t cpu_core_map[NR_CPUS];
+
+static inline const struct cpumask *cpu_coregroup_mask(int cpu)
+{
+	return &cpu_core_map[cpu];
+}
+
+#define topology_core_id(cpu)		(cpu_core_id[cpu])
+#define topology_core_cpumask(cpu)	(&cpu_core_map[cpu])
+#define mc_capable()			(1)
+
+extern unsigned char cpu_book_id[NR_CPUS];
+extern cpumask_t cpu_book_map[NR_CPUS];
+
+static inline const struct cpumask *cpu_book_mask(int cpu)
+{
+	return &cpu_book_map[cpu];
+}
+
+#define topology_book_id(cpu)		(cpu_book_id[cpu])
+#define topology_book_cpumask(cpu)	(&cpu_book_map[cpu])
+
+int topology_cpu_init(struct cpu *);
+int topology_set_cpu_management(int fc);
+void topology_schedule_update(void);
+void store_topology(struct sysinfo_15_1_x *info);
+void topology_expect_change(void);
+
+#else /* CONFIG_SCHED_BOOK */
+
+static inline void topology_schedule_update(void) { }
+static inline int topology_cpu_init(struct cpu *cpu) { return 0; }
+static inline void topology_expect_change(void) { }
+
+#endif /* CONFIG_SCHED_BOOK */
+
+#define POLARIZATION_UNKNOWN	(-1)
+#define POLARIZATION_HRZ	(0)
+#define POLARIZATION_VL		(1)
+#define POLARIZATION_VM		(2)
+#define POLARIZATION_VH		(3)
+
+extern int cpu_polarization[];
+
+static inline void cpu_set_polarization(int cpu, int val)
+{
+#ifdef CONFIG_SCHED_BOOK
+	cpu_polarization[cpu] = val;
+#endif
+}
+
+static inline int cpu_read_polarization(int cpu)
+{
+#ifdef CONFIG_SCHED_BOOK
+	return cpu_polarization[cpu];
+#else
+	return POLARIZATION_HRZ;
+#endif
+}
+
+#ifdef CONFIG_SCHED_BOOK
+void s390_init_cpu_topology(void);
+#else
+static inline void s390_init_cpu_topology(void)
+{
+};
+#endif
+
+#define SD_BOOK_INIT	SD_CPU_INIT
+
+#include <asm-generic/topology.h>
+
+#endif /* _ASM_S390_TOPOLOGY_H */