AcoSail/kernel_optimize_test
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Revert "x86: do not use cpufreq_quick_get() for /proc/cpuinfo "cpu MHz""

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This reverts commit 51204e0639.

There wasn't really any good reason for it, and people are complaining
(rightly) that it broke existing practice.

Cc: Len Brown <len.brown@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds 2017-11-02 14:06:32 -07:00
parent 6daa083923
commit 890da9cf09
1 changed files with 8 additions and 2 deletions
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10
arch/x86/kernel/cpu/proc.c
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@ -3,6 +3,7 @@
#include <linux/timex.h>
#include <linux/string.h>
#include <linux/seq_file.h>
#include <linux/cpufreq.h>
/*
* Get CPU information for use by the procfs.
@ -76,9 +77,14 @@ static int show_cpuinfo(struct seq_file *m, void *v)
if (c->microcode)
seq_printf(m, "microcode\t: 0x%x\n", c->microcode);
if (cpu_has(c, X86_FEATURE_TSC))
if (cpu_has(c, X86_FEATURE_TSC)) {
unsigned int freq = cpufreq_quick_get(cpu);
if (!freq)
freq = cpu_khz;
seq_printf(m, "cpu MHz\t\t: %u.%03u\n",
cpu_khz / 1000, (cpu_khz % 1000));
freq / 1000, (freq % 1000));
}
/* Cache size */
if (c->x86_cache_size >= 0)