diff options
| author | Yang Shi <yang.shi@linaro.org> | 2015-11-18 10:48:55 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-01-28 21:57:16 -0800 |
| commit | 5fb9b4fd3ad23e7b6007f9375de2f1f2ded5af79 (patch) | |
| tree | 0b77ecb896197267808e1c9e8e06e14f699b1754 | |
| parent | 89423dbc3dde05fbf49a8e67aa42b628d166fe01 (diff) | |
| download | lwn-5fb9b4fd3ad23e7b6007f9375de2f1f2ded5af79.tar.gz lwn-5fb9b4fd3ad23e7b6007f9375de2f1f2ded5af79.zip | |
arm64: restore bogomips information in /proc/cpuinfo
commit 92e788b749862ebe9920360513a718e5dd4da7a9 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/arm64/kernel/setup.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c index 1e01d80a1165..01eb88863960 100644 --- a/arch/arm64/kernel/setup.c +++ b/arch/arm64/kernel/setup.c @@ -446,6 +446,10 @@ static int c_show(struct seq_file *m, void *v) seq_printf(m, "processor\t: %d\n", i); #endif + 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) |