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488253ce49
The Extended Translation Facility 3 (ETF3) added instructions which allow conversions between different unicode character maps (UTF-8, UTF-32 ...). These instructions got enhanced with a later version of the ETF3 allowing malformed multibyte chars to be recognized and reported correctly. The attached patch reserves bit 8 in the elf hwcaps vector for the enhanced version of ETF3. The bit corresponds to the stfle bits 22 and 30 and will only be set if both of the stfle bits are set. Signed-off-by: Andreas Krebbel <krebbel@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
98 lines
2.1 KiB
C
98 lines
2.1 KiB
C
/*
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* arch/s390/kernel/processor.c
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*
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* Copyright IBM Corp. 2008
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* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
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*/
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#define KMSG_COMPONENT "cpu"
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#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/smp.h>
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#include <linux/seq_file.h>
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#include <linux/delay.h>
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#include <asm/elf.h>
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#include <asm/lowcore.h>
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#include <asm/param.h>
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void __cpuinit print_cpu_info(void)
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{
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pr_info("Processor %d started, address %d, identification %06X\n",
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S390_lowcore.cpu_nr, S390_lowcore.cpu_addr,
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S390_lowcore.cpu_id.ident);
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}
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/*
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* show_cpuinfo - Get information on one CPU for use by procfs.
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*/
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static int show_cpuinfo(struct seq_file *m, void *v)
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{
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static const char *hwcap_str[9] = {
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"esan3", "zarch", "stfle", "msa", "ldisp", "eimm", "dfp",
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"edat", "etf3eh"
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};
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struct _lowcore *lc;
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unsigned long n = (unsigned long) v - 1;
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int i;
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s390_adjust_jiffies();
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preempt_disable();
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if (!n) {
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seq_printf(m, "vendor_id : IBM/S390\n"
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"# processors : %i\n"
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"bogomips per cpu: %lu.%02lu\n",
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num_online_cpus(), loops_per_jiffy/(500000/HZ),
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(loops_per_jiffy/(5000/HZ))%100);
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seq_puts(m, "features\t: ");
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for (i = 0; i < 9; i++)
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if (hwcap_str[i] && (elf_hwcap & (1UL << i)))
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seq_printf(m, "%s ", hwcap_str[i]);
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seq_puts(m, "\n");
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}
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if (cpu_online(n)) {
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#ifdef CONFIG_SMP
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lc = (smp_processor_id() == n) ?
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&S390_lowcore : lowcore_ptr[n];
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#else
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lc = &S390_lowcore;
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#endif
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seq_printf(m, "processor %li: "
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"version = %02X, "
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"identification = %06X, "
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"machine = %04X\n",
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n, lc->cpu_id.version,
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lc->cpu_id.ident,
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lc->cpu_id.machine);
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}
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preempt_enable();
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return 0;
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}
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static void *c_start(struct seq_file *m, loff_t *pos)
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{
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return *pos < NR_CPUS ? (void *)((unsigned long) *pos + 1) : NULL;
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}
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static void *c_next(struct seq_file *m, void *v, loff_t *pos)
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{
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++*pos;
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return c_start(m, pos);
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}
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static void c_stop(struct seq_file *m, void *v)
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{
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}
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const struct seq_operations cpuinfo_op = {
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.start = c_start,
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.next = c_next,
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.stop = c_stop,
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.show = show_cpuinfo,
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};
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