| From | Ben Hutchings <> | Date | Sun, 16 Jul 2017 14:56:38 +0100 | Subject | [PATCH 3.2 78/95] cpupower: Fix turbo frequency reporting for pre-Sandy Bridge cores |
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3.2.91-rc1 review patch. If anyone has any objections, please let me know.
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From: Ben Hutchings <ben@decadent.org.uk>
commit 4cca0457686e4ee1677d69469e4ddfd94d389a80 upstream.
The switch that conditionally sets CPUPOWER_CAP_HAS_TURBO_RATIO and CPUPOWER_CAP_IS_SNB flags is missing a break, so all cores get both flags set and an assumed base clock of 100 MHz for turbo values.
Reported-by: GSR <gsr.bugs@infernal-iceberg.com> Tested-by: GSR <gsr.bugs@infernal-iceberg.com> References: https://bugs.debian.org/859978 Fixes: 8fb2e440b223 (cpupower: Show Intel turbo ratio support via ...) Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> --- tools/power/cpupower/utils/helpers/cpuid.c | 1 + 1 file changed, 1 insertion(+)
--- a/tools/power/cpupower/utils/helpers/cpuid.c +++ b/tools/power/cpupower/utils/helpers/cpuid.c @@ -156,6 +156,7 @@ out: */ case 0x2C: /* Westmere EP - Gulftown */ cpu_info->caps |= CPUPOWER_CAP_HAS_TURBO_RATIO; + break; case 0x2A: /* SNB */ case 0x2D: /* SNB Xeon */ cpu_info->caps |= CPUPOWER_CAP_HAS_TURBO_RATIO;
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