2 * arch/s390/kernel/processor.c
4 * Copyright IBM Corp. 2008
5 * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
8 #define KMSG_COMPONENT "cpu"
9 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
11 #include <linux/kernel.h>
12 #include <linux/init.h>
13 #include <linux/smp.h>
14 #include <linux/seq_file.h>
15 #include <linux/delay.h>
18 #include <asm/lowcore.h>
19 #include <asm/param.h>
21 void __cpuinit print_cpu_info(void)
23 pr_info("Processor %d started, address %d, identification %06X\n",
24 S390_lowcore.cpu_nr, S390_lowcore.cpu_addr,
25 S390_lowcore.cpu_id.ident);
29 * show_cpuinfo - Get information on one CPU for use by procfs.
32 static int show_cpuinfo(struct seq_file *m, void *v)
34 static const char *hwcap_str[9] = {
35 "esan3", "zarch", "stfle", "msa", "ldisp", "eimm", "dfp",
39 unsigned long n = (unsigned long) v - 1;
42 s390_adjust_jiffies();
45 seq_printf(m, "vendor_id : IBM/S390\n"
47 "bogomips per cpu: %lu.%02lu\n",
48 num_online_cpus(), loops_per_jiffy/(500000/HZ),
49 (loops_per_jiffy/(5000/HZ))%100);
50 seq_puts(m, "features\t: ");
51 for (i = 0; i < 9; i++)
52 if (hwcap_str[i] && (elf_hwcap & (1UL << i)))
53 seq_printf(m, "%s ", hwcap_str[i]);
59 lc = (smp_processor_id() == n) ?
60 &S390_lowcore : lowcore_ptr[n];
64 seq_printf(m, "processor %li: "
66 "identification = %06X, "
68 n, lc->cpu_id.version,
76 static void *c_start(struct seq_file *m, loff_t *pos)
78 return *pos < NR_CPUS ? (void *)((unsigned long) *pos + 1) : NULL;
81 static void *c_next(struct seq_file *m, void *v, loff_t *pos)
84 return c_start(m, pos);
87 static void c_stop(struct seq_file *m, void *v)
91 const struct seq_operations cpuinfo_op = {