tools/power turbostat: correctly decode of ENERGY_PERFORMANCE_BIAS

lenb · lenb · commit e9be7dd62899 · 2015-05-27T18:04:00.000-04:00
When EPB is 0xF, turbosat was incorrectly describing it as "custom"
instead of calling it "powersave":

&lt; cpu0: MSR_IA32_ENERGY_PERF_BIAS: 0x0000000f (custom)
&gt; cpu0: MSR_IA32_ENERGY_PERF_BIAS: 0x0000000f (powersave)

Signed-off-by: Len Brown &lt;len.brown@intel.com&gt;
diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
@@ -1919,7 +1919,7 @@ int print_epb(struct thread_data *t, struct core_data *c, struct pkg_data *p)
 	if (get_msr(cpu, MSR_IA32_ENERGY_PERF_BIAS, &msr))
 		return 0;
 
-	switch (msr & 0x7) {
+	switch (msr & 0xF) {
 	case ENERGY_PERF_BIAS_PERFORMANCE:
 		epb_string = "performance";
 		break;
