tools/power turbostat: correctly decode of ENERGY_PERFORMANCE_BIAS

When EPB is 0xF, turbosat was incorrectly describing it as "custom"
instead of calling it "powersave":

< cpu0: MSR_IA32_ENERGY_PERF_BIAS: 0x0000000f (custom)
> cpu0: MSR_IA32_ENERGY_PERF_BIAS: 0x0000000f (powersave)

Signed-off-by: Len Brown <len.brown@intel.com>

diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index 256a5e1de38155bb770c438478d576f6e2791ba6..f92211e9e70c3a2acfe3ede39d0024c8fc820047 100644 (file)
--- 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;