x86: CPU: Fix up "cpu MHz" in /proc/cpuinfo

[sfrench/cifs-2.6.git] / arch / x86 / kernel / cpu / proc.c

diff --git a/arch/x86/kernel/cpu/proc.c b/arch/x86/kernel/cpu/proc.c
index 218f79825b3c802d9da17fd937320da3ce4456cc..4378a729b933508e806d28045401d99781587c84 100644 (file)
--- a/arch/x86/kernel/cpu/proc.c
+++ b/arch/x86/kernel/cpu/proc.c
@@ -1,7 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
 #include <linux/smp.h>
 #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.
@@ -75,9 +77,16 @@ 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 = arch_freq_get_on_cpu(cpu);
+
+               if (!freq)
+                       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)