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authorHeiko Carstens <heiko.carstens@de.ibm.com>2016-06-27 13:19:22 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2016-07-04 09:25:20 +0200
commit10f4954ae67b3be6dac3cdfb1e0057c3779542be (patch)
treead6fba21caee7e564946b7968c680453d9aac064
parents390/ptrace: clarify bits in the per_struct (diff)
downloadlinux-dev-10f4954ae67b3be6dac3cdfb1e0057c3779542be.tar.xz
linux-dev-10f4954ae67b3be6dac3cdfb1e0057c3779542be.zip
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>
-rw-r--r--arch/s390/kernel/processor.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/kernel/processor.c b/arch/s390/kernel/processor.c
index 6cf24b471b0c..81d0808085e6 100644
--- a/arch/s390/kernel/processor.c
+++ b/arch/s390/kernel/processor.c
@@ -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)))