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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-11-03 00:06:32 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-11-08 12:17:19 +0300 |
| commit | cce587de30c755abe0187c2639ac6154d38eef0e (patch) | |
| tree | 433529dd0a0dea1510d511b0a7e5068b1570602e /arch | |
| parent | 539954a756f7749bae8775bdaae3ff4d477fa1e7 (diff) | |
| download | linux-cce587de30c755abe0187c2639ac6154d38eef0e.tar.xz | |
Revert "x86: do not use cpufreq_quick_get() for /proc/cpuinfo "cpu MHz""
commit 890da9cf098364b11a7f7f5c22fa652531624d03 upstream.
This reverts commit 51204e0639c49ada02fd823782ad673b6326d748.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/cpu/proc.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/x86/kernel/cpu/proc.c b/arch/x86/kernel/cpu/proc.c index 218f79825b3c..6df621ae62a7 100644 --- a/arch/x86/kernel/cpu/proc.c +++ b/arch/x86/kernel/cpu/proc.c @@ -2,6 +2,7 @@ #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. @@ -75,9 +76,14 @@ 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) |