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| author |   Yang Shi <yang.shi@linaro.org> | 2015-11-18 10:48:55 -0800 |
|---|---|---|
| committer |   Catalin Marinas <catalin.marinas@arm.com> | 2015-11-19 17:57:18 +0000 |
| commit | 92e788b749862ebe9920360513a718e5dd4da7a9 (patch) | |
| tree | d839587c92f23e6c2087705a9723ab1bddf26359 /arch | |
| parent | arm64: barriers: fix smp_load_acquire to work with const arguments (diff) | |
| download | linux-dev-92e788b749862ebe9920360513a718e5dd4da7a9.tar.xz linux-dev-92e788b749862ebe9920360513a718e5dd4da7a9.zip | |
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 326b16db9f69 ("arm64: delay: don't bother
reporting bogomips in /proc/cpuinfo"), but with some tweak due to
context change and without the pr_info().
Fixes: 326b16db9f69 ("arm64: delay: don't bother reporting bogomips in /proc/cpuinfo")
Signed-off-by: Yang Shi <yang.shi@linaro.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Cc: <stable@vger.kernel.org> # 3.12+
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/kernel/cpuinfo.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm64/kernel/cpuinfo.c b/arch/arm64/kernel/cpuinfo.c index 706679d0a0b4..212ae6361d8b 100644 --- a/arch/arm64/kernel/cpuinfo.c +++ b/arch/arm64/kernel/cpuinfo.c @@ -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) |