1 files changed, 98 insertions, 0 deletions
diff --git a/arch/s390/kernel/processor.c b/arch/s390/kernel/processor.c
new file mode 100644
index 00000000000..82c1872cfe8
--- /dev/null
+++ b/arch/s390/kernel/processor.c
@@ -0,0 +1,98 @@
+/*
+ *  arch/s390/kernel/processor.c
+ *
+ *  Copyright IBM Corp. 2008
+ *  Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
+ */
+
+#define KMSG_COMPONENT "cpu"
+#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/smp.h>
+#include <linux/seq_file.h>
+#include <linux/delay.h>
+
+#include <asm/elf.h>
+#include <asm/lowcore.h>
+#include <asm/param.h>
+
+void __cpuinit print_cpu_info(struct cpuinfo_S390 *cpuinfo)
+{
+	pr_info("Processor %d started, address %d, identification %06X\n",
+		cpuinfo->cpu_nr, cpuinfo->cpu_addr, cpuinfo->cpu_id.ident);
+}
+
+/*
+ * show_cpuinfo - Get information on one CPU for use by procfs.
+ */
+
+static int show_cpuinfo(struct seq_file *m, void *v)
+{
+	static const char *hwcap_str[8] = {
+		"esan3", "zarch", "stfle", "msa", "ldisp", "eimm", "dfp",
+		"edat"
+	};
+       struct cpuinfo_S390 *cpuinfo;
+       unsigned long n = (unsigned long) v - 1;
+       int i;
+
+       s390_adjust_jiffies();
+       preempt_disable();
+       if (!n) {
+	       seq_printf(m, "vendor_id       : IBM/S390\n"
+			  "# processors    : %i\n"
+			  "bogomips per cpu: %lu.%02lu\n",
+			  num_online_cpus(), loops_per_jiffy/(500000/HZ),
+			  (loops_per_jiffy/(5000/HZ))%100);
+	       seq_puts(m, "features\t: ");
+	       for (i = 0; i < 8; i++)
+		       if (hwcap_str[i] && (elf_hwcap & (1UL << i)))
+			       seq_printf(m, "%s ", hwcap_str[i]);
+	       seq_puts(m, "\n");
+       }
+
+       if (cpu_online(n)) {
+#ifdef CONFIG_SMP
+	       if (smp_processor_id() == n)
+		       cpuinfo = &S390_lowcore.cpu_data;
+	       else
+		       cpuinfo = &lowcore_ptr[n]->cpu_data;
+#else
+	       cpuinfo = &S390_lowcore.cpu_data;
+#endif
+	       seq_printf(m, "processor %li: "
+			  "version = %02X,  "
+			  "identification = %06X,  "
+			  "machine = %04X\n",
+			  n, cpuinfo->cpu_id.version,
+			  cpuinfo->cpu_id.ident,
+			  cpuinfo->cpu_id.machine);
+       }
+       preempt_enable();
+       return 0;
+}
+
+static void *c_start(struct seq_file *m, loff_t *pos)
+{
+	return *pos < NR_CPUS ? (void *)((unsigned long) *pos + 1) : NULL;
+}
+
+static void *c_next(struct seq_file *m, void *v, loff_t *pos)
+{
+	++*pos;
+	return c_start(m, pos);
+}
+
+static void c_stop(struct seq_file *m, void *v)
+{
+}
+
+const struct seq_operations cpuinfo_op = {
+	.start	= c_start,
+	.next	= c_next,
+	.stop	= c_stop,
+	.show	= show_cpuinfo,
+};
+