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Date: Fri, 17 Aug 2018 12:34:41 -0400
From: Calvin Walton <calvin.walton@...stin.ca>
To: Len Brown <lenb@...nel.org>, linux-pm@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: Calvin Walton <calvin.walton@...stin.ca>
Subject: [PATCH v3 1/2] tools/power turbostat: Add support for AMD Fam 17h (Zen) RAPL
Based on the Open-Source Register Reference for AMD Family 17h
Processors Models 00h-2Fh:
https://support.amd.com/TechDocs/56255_OSRR.pdf
These processors report RAPL support in bit 14 of CPUID 0x80000007 EDX,
and the following MSRs are present:
0xc0010299 (RAPL_PWR_UNIT), like Intel's RAPL_POWER_UNIT
0xc001029a (CORE_ENERGY_STAT), kind of like Intel's PP0_ENERGY_STATUS
0xc001029b (PKG_ENERGY_STAT), like Intel's PKG_ENERGY_STATUS
A notable difference from the Intel implementation is that AMD reports
the "Cores" energy usage separately for each core, rather than a
per-package total. The code has been adjusted to handle either case in a
generic way.
I haven't yet enabled collection of package power, due to being unable
to test it on multi-node systems (TR, EPYC).
Signed-off-by: Calvin Walton <calvin.walton@...stin.ca>
---
tools/power/x86/turbostat/turbostat.c | 159 +++++++++++++++++++++-----
1 file changed, 130 insertions(+), 29 deletions(-)
diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index 6837a65409ba..89d4e2e75774 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -44,6 +44,7 @@
#include <cpuid.h>
#include <linux/capability.h>
#include <errno.h>
+#include <math.h>
char *proc_stat = "/proc/stat";
FILE *outf;
@@ -141,9 +142,21 @@ unsigned int first_counter_read = 1;
#define RAPL_CORES_ENERGY_STATUS (1 << 9)
/* 0x639 MSR_PP0_ENERGY_STATUS */
+#define RAPL_PER_CORE_ENERGY (1 << 10)
+ /* Indicates cores energy collection is per-core,
+ * not per-package. */
+#define RAPL_AMD_F17H (1 << 11)
+ /* 0xc0010299 MSR_RAPL_PWR_UNIT */
+ /* 0xc001029a MSR_CORE_ENERGY_STAT */
+ /* 0xc001029b MSR_PKG_ENERGY_STAT */
#define RAPL_CORES (RAPL_CORES_ENERGY_STATUS | RAPL_CORES_POWER_LIMIT)
#define TJMAX_DEFAULT 100
+/* MSRs that are not yet in the kernel-provided header. */
+#define MSR_RAPL_PWR_UNIT 0xc0010299
+#define MSR_CORE_ENERGY_STAT 0xc001029a
+#define MSR_PKG_ENERGY_STAT 0xc001029b
+
#define MAX(a, b) ((a) > (b) ? (a) : (b))
/*
@@ -187,6 +200,7 @@ struct core_data {
unsigned long long c7;
unsigned long long mc6_us; /* duplicate as per-core for now, even though per module */
unsigned int core_temp_c;
+ unsigned int core_energy; /* MSR_CORE_ENERGY_STAT */
unsigned int core_id;
unsigned long long counter[MAX_ADDED_COUNTERS];
} *core_even, *core_odd;
@@ -680,6 +694,14 @@ void print_header(char *delim)
if (DO_BIC(BIC_CoreTmp))
outp += sprintf(outp, "%sCoreTmp", (printed++ ? delim : ""));
+ if (do_rapl && !rapl_joules) {
+ if (DO_BIC(BIC_CorWatt) && (do_rapl & RAPL_PER_CORE_ENERGY))
+ outp += sprintf(outp, "%sCorWatt", (printed++ ? delim : ""));
+ } else if (do_rapl && rapl_joules) {
+ if (DO_BIC(BIC_Cor_J) && (do_rapl & RAPL_PER_CORE_ENERGY))
+ outp += sprintf(outp, "%sCor_J", (printed++ ? delim : ""));
+ }
+
for (mp = sys.cp; mp; mp = mp->next) {
if (mp->format == FORMAT_RAW) {
if (mp->width == 64)
@@ -734,7 +756,7 @@ void print_header(char *delim)
if (do_rapl && !rapl_joules) {
if (DO_BIC(BIC_PkgWatt))
outp += sprintf(outp, "%sPkgWatt", (printed++ ? delim : ""));
- if (DO_BIC(BIC_CorWatt))
+ if (DO_BIC(BIC_CorWatt) && !(do_rapl & RAPL_PER_CORE_ENERGY))
outp += sprintf(outp, "%sCorWatt", (printed++ ? delim : ""));
if (DO_BIC(BIC_GFXWatt))
outp += sprintf(outp, "%sGFXWatt", (printed++ ? delim : ""));
@@ -747,7 +769,7 @@ void print_header(char *delim)
} else if (do_rapl && rapl_joules) {
if (DO_BIC(BIC_Pkg_J))
outp += sprintf(outp, "%sPkg_J", (printed++ ? delim : ""));
- if (DO_BIC(BIC_Cor_J))
+ if (DO_BIC(BIC_Cor_J) && !(do_rapl & RAPL_PER_CORE_ENERGY))
outp += sprintf(outp, "%sCor_J", (printed++ ? delim : ""));
if (DO_BIC(BIC_GFX_J))
outp += sprintf(outp, "%sGFX_J", (printed++ ? delim : ""));
@@ -808,6 +830,7 @@ int dump_counters(struct thread_data *t, struct core_data *c,
outp += sprintf(outp, "c6: %016llX\n", c->c6);
outp += sprintf(outp, "c7: %016llX\n", c->c7);
outp += sprintf(outp, "DTS: %dC\n", c->core_temp_c);
+ outp += sprintf(outp, "Joules: %0X\n", c->core_energy);
for (i = 0, mp = sys.cp; mp; i++, mp = mp->next) {
outp += sprintf(outp, "cADDED [%d] msr0x%x: %08llX\n",
@@ -1033,6 +1056,20 @@ int format_counters(struct thread_data *t, struct core_data *c,
}
}
+ /*
+ * If measurement interval exceeds minimum RAPL Joule Counter range,
+ * indicate that results are suspect by printing "**" in fraction place.
+ */
+ if (interval_float < rapl_joule_counter_range)
+ fmt8 = "%s%.2f";
+ else
+ fmt8 = "%6.0f**";
+
+ if (DO_BIC(BIC_CorWatt) && (do_rapl & RAPL_PER_CORE_ENERGY))
+ outp += sprintf(outp, fmt8, (printed++ ? delim : ""), c->core_energy * rapl_energy_units / interval_float);
+ if (DO_BIC(BIC_Cor_J) && (do_rapl & RAPL_PER_CORE_ENERGY))
+ outp += sprintf(outp, fmt8, (printed++ ? delim : ""), c->core_energy * rapl_energy_units);
+
/* print per-package data only for 1st core in package */
if (!(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
goto done;
@@ -1085,18 +1122,9 @@ int format_counters(struct thread_data *t, struct core_data *c,
if (DO_BIC(BIC_SYS_LPI))
outp += sprintf(outp, "%s%.2f", (printed++ ? delim : ""), 100.0 * p->sys_lpi / 1000000.0 / interval_float);
- /*
- * If measurement interval exceeds minimum RAPL Joule Counter range,
- * indicate that results are suspect by printing "**" in fraction place.
- */
- if (interval_float < rapl_joule_counter_range)
- fmt8 = "%s%.2f";
- else
- fmt8 = "%6.0f**";
-
if (DO_BIC(BIC_PkgWatt))
outp += sprintf(outp, fmt8, (printed++ ? delim : ""), p->energy_pkg * rapl_energy_units / interval_float);
- if (DO_BIC(BIC_CorWatt))
+ if (DO_BIC(BIC_CorWatt) && !(do_rapl & RAPL_PER_CORE_ENERGY))
outp += sprintf(outp, fmt8, (printed++ ? delim : ""), p->energy_cores * rapl_energy_units / interval_float);
if (DO_BIC(BIC_GFXWatt))
outp += sprintf(outp, fmt8, (printed++ ? delim : ""), p->energy_gfx * rapl_energy_units / interval_float);
@@ -1104,7 +1132,7 @@ int format_counters(struct thread_data *t, struct core_data *c,
outp += sprintf(outp, fmt8, (printed++ ? delim : ""), p->energy_dram * rapl_dram_energy_units / interval_float);
if (DO_BIC(BIC_Pkg_J))
outp += sprintf(outp, fmt8, (printed++ ? delim : ""), p->energy_pkg * rapl_energy_units);
- if (DO_BIC(BIC_Cor_J))
+ if (DO_BIC(BIC_Cor_J) && !(do_rapl & RAPL_PER_CORE_ENERGY))
outp += sprintf(outp, fmt8, (printed++ ? delim : ""), p->energy_cores * rapl_energy_units);
if (DO_BIC(BIC_GFX_J))
outp += sprintf(outp, fmt8, (printed++ ? delim : ""), p->energy_gfx * rapl_energy_units);
@@ -1249,6 +1277,8 @@ delta_core(struct core_data *new, struct core_data *old)
old->core_temp_c = new->core_temp_c;
old->mc6_us = new->mc6_us - old->mc6_us;
+ DELTA_WRAP32(new->core_energy, old->core_energy);
+
for (i = 0, mp = sys.cp; mp; i++, mp = mp->next) {
if (mp->format == FORMAT_RAW)
old->counter[i] = new->counter[i];
@@ -1391,6 +1421,7 @@ void clear_counters(struct thread_data *t, struct core_data *c, struct pkg_data
c->c7 = 0;
c->mc6_us = 0;
c->core_temp_c = 0;
+ c->core_energy = 0;
p->pkg_wtd_core_c0 = 0;
p->pkg_any_core_c0 = 0;
@@ -1473,6 +1504,8 @@ int sum_counters(struct thread_data *t, struct core_data *c,
average.cores.core_temp_c = MAX(average.cores.core_temp_c, c->core_temp_c);
+ average.cores.core_energy += c->core_energy;
+
for (i = 0, mp = sys.cp; mp; i++, mp = mp->next) {
if (mp->format == FORMAT_RAW)
continue;
@@ -1845,6 +1878,12 @@ int get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
c->core_temp_c = tcc_activation_temp - ((msr >> 16) & 0x7F);
}
+ if (do_rapl & RAPL_AMD_F17H) {
+ if (get_msr(cpu, MSR_CORE_ENERGY_STAT, &msr))
+ return -14;
+ c->core_energy = msr & 0xFFFFFFFF;
+ }
+
for (i = 0, mp = sys.cp; mp; i++, mp = mp->next) {
if (get_mp(cpu, mp, &c->counter[i]))
return -10;
@@ -3738,7 +3777,7 @@ int print_perf_limit(struct thread_data *t, struct core_data *c, struct pkg_data
#define RAPL_POWER_GRANULARITY 0x7FFF /* 15 bit power granularity */
#define RAPL_TIME_GRANULARITY 0x3F /* 6 bit time granularity */
-double get_tdp(unsigned int model)
+double get_tdp_intel(unsigned int model)
{
unsigned long long msr;
@@ -3755,6 +3794,16 @@ double get_tdp(unsigned int model)
}
}
+double get_tdp_amd(unsigned int family)
+{
+ switch (family) {
+ case 0x17:
+ default:
+ /* This is the max stock TDP of HEDT/Server Fam17h chips */
+ return 250.0;
+ }
+}
+
/*
* rapl_dram_energy_units_probe()
* Energy units are either hard-coded, or come from RAPL Energy Unit MSR.
@@ -3776,21 +3825,12 @@ rapl_dram_energy_units_probe(int model, double rapl_energy_units)
}
}
-
-/*
- * rapl_probe()
- *
- * sets do_rapl, rapl_power_units, rapl_energy_units, rapl_time_units
- */
-void rapl_probe(unsigned int family, unsigned int model)
+void rapl_probe_intel(unsigned int family, unsigned int model)
{
unsigned long long msr;
unsigned int time_unit;
double tdp;
- if (!genuine_intel)
- return;
-
if (family != 6)
return;
@@ -3920,13 +3960,66 @@ void rapl_probe(unsigned int family, unsigned int model)
rapl_time_units = 1.0 / (1 << (time_unit));
- tdp = get_tdp(model);
+ tdp = get_tdp_intel(model);
+
+ rapl_joule_counter_range = 0xFFFFFFFF * rapl_energy_units / tdp;
+ if (!quiet)
+ fprintf(outf, "RAPL: %.0f sec. Joule Counter Range, at %.0f Watts\n", rapl_joule_counter_range, tdp);
+}
+
+void rapl_probe_amd(unsigned int family, unsigned int model)
+{
+ unsigned long long msr;
+ unsigned int eax, ebx, ecx, edx;
+ unsigned int has_rapl = 0;
+ double tdp;
+
+ if (max_extended_level >= 0x80000007) {
+ __cpuid(0x80000007, eax, ebx, ecx, edx);
+ /* RAPL (Fam 17h) */
+ has_rapl = edx & (1 << 14);
+ }
+
+ if (!has_rapl)
+ return;
+
+ switch (family) {
+ case 0x17: /* Zen, Zen+ */
+ do_rapl = RAPL_AMD_F17H | RAPL_PER_CORE_ENERGY;
+ if (rapl_joules)
+ BIC_PRESENT(BIC_Cor_J);
+ else
+ BIC_PRESENT(BIC_CorWatt);
+ break;
+ default:
+ return;
+ }
+
+ if (get_msr(base_cpu, MSR_RAPL_PWR_UNIT, &msr))
+ return;
+
+ rapl_time_units = ldexp(1.0, -(msr >> 16 & 0xf));
+ rapl_energy_units = ldexp(1.0, -(msr >> 8 & 0x1f));
+ rapl_power_units = ldexp(1.0, -(msr & 0xf));
+
+ tdp = get_tdp_amd(model);
rapl_joule_counter_range = 0xFFFFFFFF * rapl_energy_units / tdp;
if (!quiet)
fprintf(outf, "RAPL: %.0f sec. Joule Counter Range, at %.0f Watts\n", rapl_joule_counter_range, tdp);
+}
- return;
+/*
+ * rapl_probe()
+ *
+ * sets do_rapl, rapl_power_units, rapl_energy_units, rapl_time_units
+ */
+void rapl_probe(unsigned int family, unsigned int model)
+{
+ if (genuine_intel)
+ rapl_probe_intel(family, model);
+ if (authentic_amd)
+ rapl_probe_amd(family, model);
}
void perf_limit_reasons_probe(unsigned int family, unsigned int model)
@@ -4032,6 +4125,7 @@ void print_power_limit_msr(int cpu, unsigned long long msr, char *label)
int print_rapl(struct thread_data *t, struct core_data *c, struct pkg_data *p)
{
unsigned long long msr;
+ const char *msr_name;
int cpu;
if (!do_rapl)
@@ -4047,10 +4141,17 @@ int print_rapl(struct thread_data *t, struct core_data *c, struct pkg_data *p)
return -1;
}
- if (get_msr(cpu, MSR_RAPL_POWER_UNIT, &msr))
- return -1;
+ if (do_rapl & RAPL_AMD_F17H) {
+ msr_name = "MSR_RAPL_PWR_UNIT";
+ if (get_msr(cpu, MSR_RAPL_PWR_UNIT, &msr))
+ return -1;
+ } else {
+ msr_name = "MSR_RAPL_POWER_UNIT";
+ if (get_msr(cpu, MSR_RAPL_POWER_UNIT, &msr))
+ return -1;
+ }
- fprintf(outf, "cpu%d: MSR_RAPL_POWER_UNIT: 0x%08llx (%f Watts, %f Joules, %f sec.)\n", cpu, msr,
+ fprintf(outf, "cpu%d: %s: 0x%08llx (%f Watts, %f Joules, %f sec.)\n", cpu, msr_name, msr,
rapl_power_units, rapl_energy_units, rapl_time_units);
if (do_rapl & RAPL_PKG_POWER_INFO) {
--
2.18.0
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