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 000000000000..82c1872cfe80
--- /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,
+};
+