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Commit f0057310 authored by Len Brown's avatar Len Brown
Browse files

tools/power turbostat: Decode MSR_MISC_PWR_MGMT 



This MSR is helpful to show if P-state HW coordination
is enabled or disabled.

Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 7f5c258e

tools/power/x86/turbostat/turbostat.c

+23 −0
Original line number Diff line number Diff line
@@ -2783,6 +2783,26 @@ void decode_misc_enable_msr(void) 
			msr & (1 << 18) ? "MONITOR" : "");

}



/*

 * Decode MSR_MISC_PWR_MGMT

 *

 * Decode the bits according to the Nehalem documentation

 * bit[0] seems to continue to have same meaning going forward

 * bit[1] less so...

 */

void decode_misc_pwr_mgmt_msr(void)

{

	unsigned long long msr;



	if (!do_nhm_platform_info)

		return;



	if (!get_msr(base_cpu, MSR_MISC_PWR_MGMT, &msr))

		fprintf(stderr, "cpu%d: MSR_MISC_PWR_MGMT: 0x%08llx (%sable-EIST_Coordination %sable-EPB)\n",

			base_cpu, msr,

			msr & (1 << 0) ? "DIS" : "EN",

			msr & (1 << 1) ? "EN" : "DIS");

}



void process_cpuid()

{
@@ -2936,6 +2956,9 @@ void process_cpuid() 
	do_slm_cstates = is_slm(family, model);

	do_knl_cstates  = is_knl(family, model);



	if (debug)

		decode_misc_pwr_mgmt_msr();



	rapl_probe(family, model);

	perf_limit_reasons_probe(family, model);