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authorLen Brown <len.brown@intel.com>2016-04-06 17:15:57 -0400
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-04-07 22:18:35 +0200
commite8efbc80db5e824ce2382d5e65429b6b493e71e2 (patch)
tree12b286bf50be919530d7b40fb4c2fc3c8fdcc888 /tools
parente4085d543e256aff6606ba99ed257f7c06685f3b (diff)
downloadlinux-sh-e8efbc80db5e824ce2382d5e65429b6b493e71e2.tar.gz
tools/power turbostat: decode BXT TSC frequency via CPUID
Hard-code BXT ART to 19200MHz, so turbostat --debug can fully enumerate TSC: CPUID(0x15): eax_crystal: 3 ebx_tsc: 186 ecx_crystal_hz: 0 TSC: 1190 MHz (19200000 Hz * 186 / 3 / 1000000) Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/power/x86/turbostat/turbostat.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index 96d8eafdd380..b15c84323b73 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -3278,7 +3278,10 @@ void process_cpuid()
switch(model) {
case 0x4E: /* SKL */
case 0x5E: /* SKL */
- crystal_hz = 24000000; /* 24 MHz */
+ crystal_hz = 24000000; /* 24.0 MHz */
+ break;
+ case 0x5C: /* BXT */
+ crystal_hz = 19200000; /* 19.2 MHz */
break;
default:
crystal_hz = 0;