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Commit fcd17211 authored by Len Brown's avatar Len Brown
Browse files

tools/power turbostat: dump MSR_TURBO_RATIO_LIMIT2 



and up to 18 cores of turbo ratio limit
when using the turbostat --debug option.

Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 12bb43c6

tools/power/x86/turbostat/turbostat.c

+105 −36
Original line number Diff line number Diff line
@@ -65,8 +65,6 @@ unsigned int units = 1000000; /* MHz etc */ 
unsigned int genuine_intel;

unsigned int has_invariant_tsc;

unsigned int do_nhm_platform_info;

unsigned int do_nhm_turbo_ratio_limit;

unsigned int do_ivt_turbo_ratio_limit;

unsigned int extra_msr_offset32;

unsigned int extra_msr_offset64;

unsigned int extra_delta_offset32;
@@ -1078,14 +1076,12 @@ int slv_pkg_cstate_limits[8] = {PCL__0, PCL__1, PCLRSV, PCLRSV, PCL__4, PCLRSV, 
int amt_pkg_cstate_limits[8] = {PCL__0, PCL__1, PCL__2, PCLRSV, PCLRSV, PCLRSV, PCL__6, PCL__7};

int phi_pkg_cstate_limits[8] = {PCL__0, PCL__2, PCL_6N, PCL_6R, PCLRSV, PCLRSV, PCLRSV, PCLUNL};



void dump_system_config_info(void)

static void

dump_nhm_platform_info(void)

{

	unsigned long long msr;

	unsigned int ratio;



	if (!do_nhm_platform_info)

		return;



	get_msr(0, MSR_NHM_PLATFORM_INFO, &msr);



	fprintf(stderr, "cpu0: MSR_NHM_PLATFORM_INFO: 0x%08llx\n", msr);
@@ -1102,8 +1098,36 @@ void dump_system_config_info(void) 
	fprintf(stderr, "cpu0: MSR_IA32_POWER_CTL: 0x%08llx (C1E auto-promotion: %sabled)\n",

		msr, msr & 0x2 ? "EN" : "DIS");



	if (!do_ivt_turbo_ratio_limit)

		goto print_nhm_turbo_ratio_limits;

	return;

}



static void

dump_hsw_turbo_ratio_limits(void)

{

	unsigned long long msr;

	unsigned int ratio;



	get_msr(0, MSR_TURBO_RATIO_LIMIT2, &msr);



	fprintf(stderr, "cpu0: MSR_TURBO_RATIO_LIMIT2: 0x%08llx\n", msr);



	ratio = (msr >> 8) & 0xFF;

	if (ratio)

		fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 18 active cores\n",

			ratio, bclk, ratio * bclk);



	ratio = (msr >> 0) & 0xFF;

	if (ratio)

		fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 17 active cores\n",

			ratio, bclk, ratio * bclk);

	return;

}



static void

dump_ivt_turbo_ratio_limits(void)

{

	unsigned long long msr;

	unsigned int ratio;



	get_msr(0, MSR_TURBO_RATIO_LIMIT1, &msr);
@@ -1148,26 +1172,14 @@ void dump_system_config_info(void) 
	if (ratio)

		fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 9 active cores\n",

			ratio, bclk, ratio * bclk);



print_nhm_turbo_ratio_limits:

	get_msr(0, MSR_NHM_SNB_PKG_CST_CFG_CTL, &msr);



#define SNB_C1_AUTO_UNDEMOTE              (1UL << 27)

#define SNB_C3_AUTO_UNDEMOTE              (1UL << 28)



	fprintf(stderr, "cpu0: MSR_NHM_SNB_PKG_CST_CFG_CTL: 0x%08llx", msr);



	fprintf(stderr, " (%s%s%s%s%slocked: pkg-cstate-limit=%d: %s)\n",

		(msr & SNB_C3_AUTO_UNDEMOTE) ? "UNdemote-C3, " : "",

		(msr & SNB_C1_AUTO_UNDEMOTE) ? "UNdemote-C1, " : "",

		(msr & NHM_C3_AUTO_DEMOTE) ? "demote-C3, " : "",

		(msr & NHM_C1_AUTO_DEMOTE) ? "demote-C1, " : "",

		(msr & (1 << 15)) ? "" : "UN",

		(unsigned int)msr & 7,

		pkg_cstate_limit_strings[pkg_cstate_limit]);



	if (!do_nhm_turbo_ratio_limit)

	return;

}



static void

dump_nhm_turbo_ratio_limits(void)

{

	unsigned long long msr;

	unsigned int ratio;



	get_msr(0, MSR_TURBO_RATIO_LIMIT, &msr);
@@ -1212,7 +1224,30 @@ print_nhm_turbo_ratio_limits: 
	if (ratio)

		fprintf(stderr, "%d * %.0f = %.0f MHz max turbo 1 active cores\n",

			ratio, bclk, ratio * bclk);

	return;

}



static void

dump_nhm_cst_cfg(void)

{

	unsigned long long msr;



	get_msr(0, MSR_NHM_SNB_PKG_CST_CFG_CTL, &msr);



#define SNB_C1_AUTO_UNDEMOTE              (1UL << 27)

#define SNB_C3_AUTO_UNDEMOTE              (1UL << 28)



	fprintf(stderr, "cpu0: MSR_NHM_SNB_PKG_CST_CFG_CTL: 0x%08llx", msr);



	fprintf(stderr, " (%s%s%s%s%slocked: pkg-cstate-limit=%d: %s)\n",

		(msr & SNB_C3_AUTO_UNDEMOTE) ? "UNdemote-C3, " : "",

		(msr & SNB_C1_AUTO_UNDEMOTE) ? "UNdemote-C1, " : "",

		(msr & NHM_C3_AUTO_DEMOTE) ? "demote-C3, " : "",

		(msr & NHM_C1_AUTO_DEMOTE) ? "demote-C1, " : "",

		(msr & (1 << 15)) ? "" : "UN",

		(unsigned int)msr & 7,

		pkg_cstate_limit_strings[pkg_cstate_limit]);

	return;

}



void free_all_buffers(void)
@@ -1625,12 +1660,49 @@ int has_ivt_turbo_ratio_limit(unsigned int family, unsigned int model) 


	switch (model) {

	case 0x3E:	/* IVB Xeon */

	case 0x3F:	/* HSW Xeon */

		return 1;

	default:

		return 0;

	}

}

int has_hsw_turbo_ratio_limit(unsigned int family, unsigned int model)

{

	if (!genuine_intel)

		return 0;



	if (family != 6)

		return 0;



	switch (model) {

	case 0x3F:	/* HSW Xeon */

		return 1;

	default:

		return 0;

	}

}



static void

dump_cstate_pstate_config_info(family, model)

{

	if (!do_nhm_platform_info)

		return;



	dump_nhm_platform_info();



	if (has_hsw_turbo_ratio_limit(family, model))

		dump_hsw_turbo_ratio_limits();



	if (has_ivt_turbo_ratio_limit(family, model))

		dump_ivt_turbo_ratio_limits();



	if (has_nhm_turbo_ratio_limit(family, model))

		dump_nhm_turbo_ratio_limits();



	dump_nhm_cst_cfg();

}





/*

 * print_epb()

 * Decode the ENERGY_PERF_BIAS MSR
@@ -2238,7 +2310,7 @@ guess: 


	return 0;

}

void check_cpuid()

void process_cpuid()

{

	unsigned int eax, ebx, ecx, edx, max_level;

	unsigned int fms, family, model, stepping;
@@ -2314,15 +2386,15 @@ void check_cpuid() 
	do_slm_cstates = is_slm(family, model);

	bclk = discover_bclk(family, model);



	do_nhm_turbo_ratio_limit = do_nhm_platform_info && has_nhm_turbo_ratio_limit(family, model);

	do_ivt_turbo_ratio_limit = has_ivt_turbo_ratio_limit(family, model);

	rapl_probe(family, model);

	perf_limit_reasons_probe(family, model);



	if (debug)

		dump_cstate_pstate_config_info();



	return;

}





void help()

{

	fprintf(stderr,
@@ -2560,13 +2632,10 @@ void turbostat_init() 
{

	check_dev_msr();

	check_permissions();

	check_cpuid();

	process_cpuid();



	setup_all_buffers();



	if (debug)

		dump_system_config_info();



	if (debug)

		for_all_cpus(print_epb, ODD_COUNTERS);
@@ -2644,7 +2713,7 @@ int get_and_dump_counters(void) 
}



void print_version() {

	fprintf(stderr, "turbostat version 4.1 10-Feb, 2015"

	fprintf(stderr, "turbostat version 4.2 23 Mar, 2015"

		" - Len Brown <lenb@kernel.org>\n");

}