This is a note to let you know that I've just added the patch titled
cpupower: Fix turbo frequency reporting for pre-Sandy Bridge cores
to the 3.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
cpupower-fix-turbo-frequency-reporting-for-pre-sandy-bridge-cores.patch
and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 4cca0457686e4ee1677d69469e4ddfd94d389a80 Mon Sep 17 00:00:00 2001
From: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
Date: Tue, 11 Apr 2017 00:29:44 +0100
Subject: cpupower: Fix turbo frequency reporting for pre-Sandy Bridge cores
From: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
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@xxxxxxxxxxxxxxxxxxxx>
Tested-by: GSR <gsr.bugs@xxxxxxxxxxxxxxxxxxxx>
References: https://bugs.debian.org/859978
Fixes: 8fb2e440b223 (cpupower: Show Intel turbo ratio support via ...)
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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 */
case 0x3A: /* IVB */
Patches currently in stable-queue which might be from ben@xxxxxxxxxxxxxxx are
queue-3.18/cpupower-fix-turbo-frequency-reporting-for-pre-sandy-bridge-cores.patch