Commit 92e788b7 authored by Yang Shi's avatar Yang Shi Committed by Catalin Marinas

arm64: restore bogomips information in /proc/cpuinfo

As previously reported, some userspace applications depend on bogomips
showed by /proc/cpuinfo. Although there is much less legacy impact on
aarch64 than arm, it does break libvirt.

This patch reverts commit 326b16db ("arm64: delay: don't bother
reporting bogomips in /proc/cpuinfo"), but with some tweak due to
context change and without the pr_info().

Fixes: 326b16db ("arm64: delay: don't bother reporting bogomips in /proc/cpuinfo")
Signed-off-by: default avatarYang Shi <>
Acked-by: default avatarWill Deacon <>
Cc: <> # 3.12+
Signed-off-by: default avatarCatalin Marinas <>
parent c139aa60
......@@ -30,6 +30,7 @@
#include <linux/seq_file.h>
#include <linux/sched.h>
#include <linux/smp.h>
#include <linux/delay.h>
* In case the boot CPU is hotpluggable, we record its initial state and
......@@ -112,6 +113,10 @@ static int c_show(struct seq_file *m, void *v)
seq_printf(m, "processor\t: %d\n", i);
seq_printf(m, "BogoMIPS\t: %lu.%02lu\n",
loops_per_jiffy / (500000UL/HZ),
loops_per_jiffy / (5000UL/HZ) % 100);
* Dump out the common processor features in a single line.
* Userspace should read the hwcaps with getauxval(AT_HWCAP)
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment