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authorLinus Torvalds <torvalds@linux-foundation.org>2015-05-31 11:39:25 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-05-31 11:39:25 -0700
commit50f5a1ee32ba2dd8f7221e4d841249edf81b9075 (patch)
treec5962d0c67a692793f893e69153ab0161faa862a
parentdae8f283bf30738593f6d2a4623945c5e6d7794e (diff)
parenta68c7c3ff0469d79993ee85e8e0a3a9a568ce350 (diff)
downloadlinux-stericsson-50f5a1ee32ba2dd8f7221e4d841249edf81b9075.tar.gz
Merge branch 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
Pull turbostat tool fixes from Len Brown: "Just one minor kernel dependency in this batch -- added a #define to msr-index.h" * 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: tools/power turbostat: update version number to 4.7 tools/power turbostat: allow running without cpu0 tools/power turbostat: correctly decode of ENERGY_PERFORMANCE_BIAS tools/power turbostat: enable turbostat to support Knights Landing (KNL) tools/power turbostat: correctly display more than 2 threads/core
-rw-r--r--arch/x86/include/uapi/asm/msr-index.h1
-rw-r--r--tools/power/x86/turbostat/turbostat.c224
2 files changed, 185 insertions, 40 deletions
diff --git a/arch/x86/include/uapi/asm/msr-index.h b/arch/x86/include/uapi/asm/msr-index.h
index c469490db4a8..3c6bb342a48f 100644
--- a/arch/x86/include/uapi/asm/msr-index.h
+++ b/arch/x86/include/uapi/asm/msr-index.h
@@ -140,6 +140,7 @@
#define MSR_CORE_C3_RESIDENCY 0x000003fc
#define MSR_CORE_C6_RESIDENCY 0x000003fd
#define MSR_CORE_C7_RESIDENCY 0x000003fe
+#define MSR_KNL_CORE_C6_RESIDENCY 0x000003ff
#define MSR_PKG_C2_RESIDENCY 0x0000060d
#define MSR_PKG_C8_RESIDENCY 0x00000630
#define MSR_PKG_C9_RESIDENCY 0x00000631
diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index bac98ca3d4ca..323b65edfc97 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -52,6 +52,7 @@ unsigned int skip_c0;
unsigned int skip_c1;
unsigned int do_nhm_cstates;
unsigned int do_snb_cstates;
+unsigned int do_knl_cstates;
unsigned int do_pc2;
unsigned int do_pc3;
unsigned int do_pc6;
@@ -91,6 +92,7 @@ unsigned int do_gfx_perf_limit_reasons;
unsigned int do_ring_perf_limit_reasons;
unsigned int crystal_hz;
unsigned long long tsc_hz;
+int base_cpu;
#define RAPL_PKG (1 << 0)
/* 0x610 MSR_PKG_POWER_LIMIT */
@@ -316,7 +318,7 @@ void print_header(void)
if (do_nhm_cstates)
outp += sprintf(outp, " CPU%%c1");
- if (do_nhm_cstates && !do_slm_cstates)
+ if (do_nhm_cstates && !do_slm_cstates && !do_knl_cstates)
outp += sprintf(outp, " CPU%%c3");
if (do_nhm_cstates)
outp += sprintf(outp, " CPU%%c6");
@@ -546,7 +548,7 @@ int format_counters(struct thread_data *t, struct core_data *c,
if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
goto done;
- if (do_nhm_cstates && !do_slm_cstates)
+ if (do_nhm_cstates && !do_slm_cstates && !do_knl_cstates)
outp += sprintf(outp, "%8.2f", 100.0 * c->c3/t->tsc);
if (do_nhm_cstates)
outp += sprintf(outp, "%8.2f", 100.0 * c->c6/t->tsc);
@@ -1018,14 +1020,17 @@ int get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p)
if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
return 0;
- if (do_nhm_cstates && !do_slm_cstates) {
+ if (do_nhm_cstates && !do_slm_cstates && !do_knl_cstates) {
if (get_msr(cpu, MSR_CORE_C3_RESIDENCY, &c->c3))
return -6;
}
- if (do_nhm_cstates) {
+ if (do_nhm_cstates && !do_knl_cstates) {
if (get_msr(cpu, MSR_CORE_C6_RESIDENCY, &c->c6))
return -7;
+ } else if (do_knl_cstates) {
+ if (get_msr(cpu, MSR_KNL_CORE_C6_RESIDENCY, &c->c6))
+ return -7;
}
if (do_snb_cstates)
@@ -1150,7 +1155,7 @@ dump_nhm_platform_info(void)
unsigned long long msr;
unsigned int ratio;
- get_msr(0, MSR_NHM_PLATFORM_INFO, &msr);
+ get_msr(base_cpu, MSR_NHM_PLATFORM_INFO, &msr);
fprintf(stderr, "cpu0: MSR_NHM_PLATFORM_INFO: 0x%08llx\n", msr);
@@ -1162,7 +1167,7 @@ dump_nhm_platform_info(void)
fprintf(stderr, "%d * %.0f = %.0f MHz base frequency\n",
ratio, bclk, ratio * bclk);
- get_msr(0, MSR_IA32_POWER_CTL, &msr);
+ get_msr(base_cpu, MSR_IA32_POWER_CTL, &msr);
fprintf(stderr, "cpu0: MSR_IA32_POWER_CTL: 0x%08llx (C1E auto-promotion: %sabled)\n",
msr, msr & 0x2 ? "EN" : "DIS");
@@ -1175,7 +1180,7 @@ dump_hsw_turbo_ratio_limits(void)
unsigned long long msr;
unsigned int ratio;
- get_msr(0, MSR_TURBO_RATIO_LIMIT2, &msr);
+ get_msr(base_cpu, MSR_TURBO_RATIO_LIMIT2, &msr);
fprintf(stderr, "cpu0: MSR_TURBO_RATIO_LIMIT2: 0x%08llx\n", msr);
@@ -1197,7 +1202,7 @@ dump_ivt_turbo_ratio_limits(void)
unsigned long long msr;
unsigned int ratio;
- get_msr(0, MSR_TURBO_RATIO_LIMIT1, &msr);
+ get_msr(base_cpu, MSR_TURBO_RATIO_LIMIT1, &msr);
fprintf(stderr, "cpu0: MSR_TURBO_RATIO_LIMIT1: 0x%08llx\n", msr);
@@ -1249,7 +1254,7 @@ dump_nhm_turbo_ratio_limits(void)
unsigned long long msr;
unsigned int ratio;
- get_msr(0, MSR_TURBO_RATIO_LIMIT, &msr);
+ get_msr(base_cpu, MSR_TURBO_RATIO_LIMIT, &msr);
fprintf(stderr, "cpu0: MSR_TURBO_RATIO_LIMIT: 0x%08llx\n", msr);
@@ -1296,11 +1301,72 @@ dump_nhm_turbo_ratio_limits(void)
}
static void
+dump_knl_turbo_ratio_limits(void)
+{
+ int cores;
+ unsigned int ratio;
+ unsigned long long msr;
+ int delta_cores;
+ int delta_ratio;
+ int i;
+
+ get_msr(base_cpu, MSR_NHM_TURBO_RATIO_LIMIT, &msr);
+
+ fprintf(stderr, "cpu0: MSR_NHM_TURBO_RATIO_LIMIT: 0x%08llx\n",
+ msr);
+
+ /**
+ * Turbo encoding in KNL is as follows:
+ * [7:0] -- Base value of number of active cores of bucket 1.
+ * [15:8] -- Base value of freq ratio of bucket 1.
+ * [20:16] -- +ve delta of number of active cores of bucket 2.
+ * i.e. active cores of bucket 2 =
+ * active cores of bucket 1 + delta
+ * [23:21] -- Negative delta of freq ratio of bucket 2.
+ * i.e. freq ratio of bucket 2 =
+ * freq ratio of bucket 1 - delta
+ * [28:24]-- +ve delta of number of active cores of bucket 3.
+ * [31:29]-- -ve delta of freq ratio of bucket 3.
+ * [36:32]-- +ve delta of number of active cores of bucket 4.
+ * [39:37]-- -ve delta of freq ratio of bucket 4.
+ * [44:40]-- +ve delta of number of active cores of bucket 5.
+ * [47:45]-- -ve delta of freq ratio of bucket 5.
+ * [52:48]-- +ve delta of number of active cores of bucket 6.
+ * [55:53]-- -ve delta of freq ratio of bucket 6.
+ * [60:56]-- +ve delta of number of active cores of bucket 7.
+ * [63:61]-- -ve delta of freq ratio of bucket 7.
+ */
+ cores = msr & 0xFF;
+ ratio = (msr >> 8) && 0xFF;
+ if (ratio > 0)
+ fprintf(stderr,
+ "%d * %.0f = %.0f MHz max turbo %d active cores\n",
+ ratio, bclk, ratio * bclk, cores);
+
+ for (i = 16; i < 64; i = i + 8) {
+ delta_cores = (msr >> i) & 0x1F;
+ delta_ratio = (msr >> (i + 5)) && 0x7;
+ if (!delta_cores || !delta_ratio)
+ return;
+ cores = cores + delta_cores;
+ ratio = ratio - delta_ratio;
+
+ /** -ve ratios will make successive ratio calculations
+ * negative. Hence return instead of carrying on.
+ */
+ if (ratio > 0)
+ fprintf(stderr,
+ "%d * %.0f = %.0f MHz max turbo %d active cores\n",
+ ratio, bclk, ratio * bclk, cores);
+ }
+}
+
+static void
dump_nhm_cst_cfg(void)
{
unsigned long long msr;
- get_msr(0, MSR_NHM_SNB_PKG_CST_CFG_CTL, &msr);
+ get_msr(base_cpu, MSR_NHM_SNB_PKG_CST_CFG_CTL, &msr);
#define SNB_C1_AUTO_UNDEMOTE (1UL << 27)
#define SNB_C3_AUTO_UNDEMOTE (1UL << 28)
@@ -1381,12 +1447,41 @@ int parse_int_file(const char *fmt, ...)
}
/*
- * cpu_is_first_sibling_in_core(cpu)
- * return 1 if given CPU is 1st HT sibling in the core
+ * get_cpu_position_in_core(cpu)
+ * return the position of the CPU among its HT siblings in the core
+ * return -1 if the sibling is not in list
*/
-int cpu_is_first_sibling_in_core(int cpu)
+int get_cpu_position_in_core(int cpu)
{
- return cpu == parse_int_file("/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
+ char path[64];
+ FILE *filep;
+ int this_cpu;
+ char character;
+ int i;
+
+ sprintf(path,
+ "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list",
+ cpu);
+ filep = fopen(path, "r");
+ if (filep == NULL) {
+ perror(path);
+ exit(1);
+ }
+
+ for (i = 0; i < topo.num_threads_per_core; i++) {
+ fscanf(filep, "%d", &this_cpu);
+ if (this_cpu == cpu) {
+ fclose(filep);
+ return i;
+ }
+
+ /* Account for no separator after last thread*/
+ if (i != (topo.num_threads_per_core - 1))
+ fscanf(filep, "%c", &character);
+ }
+
+ fclose(filep);
+ return -1;
}
/*
@@ -1412,25 +1507,31 @@ int get_num_ht_siblings(int cpu)
{
char path[80];
FILE *filep;
- int sib1, sib2;
- int matches;
+ int sib1;
+ int matches = 0;
char character;
+ char str[100];
+ char *ch;
sprintf(path, "/sys/devices/system/cpu/cpu%d/topology/thread_siblings_list", cpu);
filep = fopen_or_die(path, "r");
+
/*
* file format:
- * if a pair of number with a character between: 2 siblings (eg. 1-2, or 1,4)
- * otherwinse 1 sibling (self).
+ * A ',' separated or '-' separated set of numbers
+ * (eg 1-2 or 1,3,4,5)
*/
- matches = fscanf(filep, "%d%c%d\n", &sib1, &character, &sib2);
+ fscanf(filep, "%d%c\n", &sib1, &character);
+ fseek(filep, 0, SEEK_SET);
+ fgets(str, 100, filep);
+ ch = strchr(str, character);
+ while (ch != NULL) {
+ matches++;
+ ch = strchr(ch+1, character);
+ }
fclose(filep);
-
- if (matches == 3)
- return 2;
- else
- return 1;
+ return matches+1;
}
/*
@@ -1594,8 +1695,10 @@ restart:
void check_dev_msr()
{
struct stat sb;
+ char pathname[32];
- if (stat("/dev/cpu/0/msr", &sb))
+ sprintf(pathname, "/dev/cpu/%d/msr", base_cpu);
+ if (stat(pathname, &sb))
if (system("/sbin/modprobe msr > /dev/null 2>&1"))
err(-5, "no /dev/cpu/0/msr, Try \"# modprobe msr\" ");
}
@@ -1608,6 +1711,7 @@ void check_permissions()
cap_user_data_t cap_data = &cap_data_data;
extern int capget(cap_user_header_t hdrp, cap_user_data_t datap);
int do_exit = 0;
+ char pathname[32];
/* check for CAP_SYS_RAWIO */
cap_header->pid = getpid();
@@ -1622,7 +1726,8 @@ void check_permissions()
}
/* test file permissions */
- if (euidaccess("/dev/cpu/0/msr", R_OK)) {
+ sprintf(pathname, "/dev/cpu/%d/msr", base_cpu);
+ if (euidaccess(pathname, R_OK)) {
do_exit++;
warn("/dev/cpu/0/msr open failed, try chown or chmod +r /dev/cpu/*/msr");
}
@@ -1704,7 +1809,7 @@ int probe_nhm_msrs(unsigned int family, unsigned int model)
default:
return 0;
}
- get_msr(0, MSR_NHM_SNB_PKG_CST_CFG_CTL, &msr);
+ get_msr(base_cpu, MSR_NHM_SNB_PKG_CST_CFG_CTL, &msr);
pkg_cstate_limit = pkg_cstate_limits[msr & 0xF];
@@ -1753,6 +1858,21 @@ int has_hsw_turbo_ratio_limit(unsigned int family, unsigned int model)
}
}
+int has_knl_turbo_ratio_limit(unsigned int family, unsigned int model)
+{
+ if (!genuine_intel)
+ return 0;
+
+ if (family != 6)
+ return 0;
+
+ switch (model) {
+ case 0x57: /* Knights Landing */
+ return 1;
+ default:
+ return 0;
+ }
+}
static void
dump_cstate_pstate_config_info(family, model)
{
@@ -1770,6 +1890,9 @@ dump_cstate_pstate_config_info(family, model)
if (has_nhm_turbo_ratio_limit(family, model))
dump_nhm_turbo_ratio_limits();
+ if (has_knl_turbo_ratio_limit(family, model))
+ dump_knl_turbo_ratio_limits();
+
dump_nhm_cst_cfg();
}
@@ -1801,7 +1924,7 @@ 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;
@@ -1925,7 +2048,7 @@ double get_tdp(model)
unsigned long long msr;
if (do_rapl & RAPL_PKG_POWER_INFO)
- if (!get_msr(0, MSR_PKG_POWER_INFO, &msr))
+ if (!get_msr(base_cpu, MSR_PKG_POWER_INFO, &msr))
return ((msr >> 0) & RAPL_POWER_GRANULARITY) * rapl_power_units;
switch (model) {
@@ -1950,6 +2073,7 @@ rapl_dram_energy_units_probe(int model, double rapl_energy_units)
case 0x3F: /* HSX */
case 0x4F: /* BDX */
case 0x56: /* BDX-DE */
+ case 0x57: /* KNL */
return (rapl_dram_energy_units = 15.3 / 1000000);
default:
return (rapl_energy_units);
@@ -1991,6 +2115,7 @@ void rapl_probe(unsigned int family, unsigned int model)
case 0x3F: /* HSX */
case 0x4F: /* BDX */
case 0x56: /* BDX-DE */
+ case 0x57: /* KNL */
do_rapl = RAPL_PKG | RAPL_DRAM | RAPL_DRAM_POWER_INFO | RAPL_DRAM_PERF_STATUS | RAPL_PKG_PERF_STATUS | RAPL_PKG_POWER_INFO;
break;
case 0x2D:
@@ -2006,7 +2131,7 @@ void rapl_probe(unsigned int family, unsigned int model)
}
/* units on package 0, verify later other packages match */
- if (get_msr(0, MSR_RAPL_POWER_UNIT, &msr))
+ if (get_msr(base_cpu, MSR_RAPL_POWER_UNIT, &msr))
return;
rapl_power_units = 1.0 / (1 << (msr & 0xF));
@@ -2331,6 +2456,17 @@ int is_slm(unsigned int family, unsigned int model)
return 0;
}
+int is_knl(unsigned int family, unsigned int model)
+{
+ if (!genuine_intel)
+ return 0;
+ switch (model) {
+ case 0x57: /* KNL */
+ return 1;
+ }
+ return 0;
+}
+
#define SLM_BCLK_FREQS 5
double slm_freq_table[SLM_BCLK_FREQS] = { 83.3, 100.0, 133.3, 116.7, 80.0};
@@ -2340,7 +2476,7 @@ double slm_bclk(void)
unsigned int i;
double freq;
- if (get_msr(0, MSR_FSB_FREQ, &msr))
+ if (get_msr(base_cpu, MSR_FSB_FREQ, &msr))
fprintf(stderr, "SLM BCLK: unknown\n");
i = msr & 0xf;
@@ -2408,7 +2544,7 @@ int set_temperature_target(struct thread_data *t, struct core_data *c, struct pk
if (!do_nhm_platform_info)
goto guess;
- if (get_msr(0, MSR_IA32_TEMPERATURE_TARGET, &msr))
+ if (get_msr(base_cpu, MSR_IA32_TEMPERATURE_TARGET, &msr))
goto guess;
target_c_local = (msr >> 16) & 0xFF;
@@ -2541,6 +2677,7 @@ void process_cpuid()
do_c8_c9_c10 = has_hsw_msrs(family, model);
do_skl_residency = has_skl_msrs(family, model);
do_slm_cstates = is_slm(family, model);
+ do_knl_cstates = is_knl(family, model);
bclk = discover_bclk(family, model);
rapl_probe(family, model);
@@ -2755,13 +2892,9 @@ int initialize_counters(int cpu_id)
my_package_id = get_physical_package_id(cpu_id);
my_core_id = get_core_id(cpu_id);
-
- if (cpu_is_first_sibling_in_core(cpu_id)) {
- my_thread_id = 0;
+ my_thread_id = get_cpu_position_in_core(cpu_id);
+ if (!my_thread_id)
topo.num_cores++;
- } else {
- my_thread_id = 1;
- }
init_counter(EVEN_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
init_counter(ODD_COUNTERS, my_thread_id, my_core_id, my_package_id, cpu_id);
@@ -2785,13 +2918,24 @@ void setup_all_buffers(void)
for_all_proc_cpus(initialize_counters);
}
+void set_base_cpu(void)
+{
+ base_cpu = sched_getcpu();
+ if (base_cpu < 0)
+ err(-ENODEV, "No valid cpus found");
+
+ if (debug > 1)
+ fprintf(stderr, "base_cpu = %d\n", base_cpu);
+}
+
void turbostat_init()
{
+ setup_all_buffers();
+ set_base_cpu();
check_dev_msr();
check_permissions();
process_cpuid();
- setup_all_buffers();
if (debug)
for_all_cpus(print_epb, ODD_COUNTERS);
@@ -2870,7 +3014,7 @@ int get_and_dump_counters(void)
}
void print_version() {
- fprintf(stderr, "turbostat version 4.5 2 Apr, 2015"
+ fprintf(stderr, "turbostat version 4.7 27-May, 2015"
" - Len Brown <lenb@kernel.org>\n");
}