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s390/cpuinfo: show maximum thread id 

Expose the maximum thread id with /proc/cpuinfo.
With the new line the output looks like this:

vendor_id       : IBM/S390
bogomips per cpu: 20325.00
max thread id   : 1

With this new interface it is possible to always tell the correct
number of cpu threads potentially being used by the kernel.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens 2016-06-27 13:19:22 +02:00 committed by Martin Schwidefsky
parent 25d539c9a9
commit 10f4954ae6
1 changed files with 1 additions and 0 deletions
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arch/s390/kernel/processor.c
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@ -104,6 +104,7 @@ static void show_cpu_summary(struct seq_file *m, void *v)
"bogomips per cpu: %lu.%02lu\n",
num_online_cpus(), loops_per_jiffy/(500000/HZ),
(loops_per_jiffy/(5000/HZ))%100);
seq_printf(m, "max thread id : %d\n", smp_cpu_mtid);
seq_puts(m, "features\t: ");
for (i = 0; i < ARRAY_SIZE(hwcap_str); i++)
if (hwcap_str[i] && (elf_hwcap & (1UL << i)))