From 121b48bb77187cf2ed3053e147d2e6c1e864083c Mon Sep 17 00:00:00 2001 From: "Chrzaniuk, Hubert" Date: Wed, 10 Feb 2016 16:35:17 +0100 Subject: [PATCH] tools/power turbostat: Intel Xeon x200: fix erroneous bclk value x200 does not enable any way to programmatically obtain bus clock speed. Bclk for the architecture has a fixed value of 100 MHz. At the same time x200 cannot be included in has_snb_msrs since it does not support C7 idle state. prior to this patch, MHz values reported on this chip were erroneously calculated using bclk of 133MHz, causing MHz values to be reported 33% higher than actual. Signed-off-by: Hubert Chrzaniuk Signed-off-by: Len Brown --- tools/power/x86/turbostat/turbostat.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c index e411cc435137..652d08df5d12 100644 --- a/tools/power/x86/turbostat/turbostat.c +++ b/tools/power/x86/turbostat/turbostat.c @@ -2697,7 +2697,7 @@ double slm_bclk(void) double discover_bclk(unsigned int family, unsigned int model) { - if (has_snb_msrs(family, model)) + if (has_snb_msrs(family, model) || is_knl(family, model)) return 100.00; else if (is_slm(family, model)) return slm_bclk();