aboutsummaryrefslogtreecommitdiff
path: root/tools
diff options
context:
space:
mode:
authorThomas Renninger <trenn@suse.de>2011-07-21 11:54:53 +0200
committerDominik Brodowski <linux@dominikbrodowski.net>2011-07-29 19:37:25 +0200
commit8fb2e440b223b966f74a04a48f6f71f288fa671b (patch)
tree3a9f2c19c039072d0b2641385bf0e6897bed2361 /tools
parent76b659a31df5174d71832b7882ef31b32e1f8d59 (diff)
downloadvexpress-lsk-8fb2e440b223b966f74a04a48f6f71f288fa671b.tar.gz
cpupower: Show Intel turbo ratio support via ./cpupower frequency-info
This adds the last piece missing from turbostat (if called with -v). It shows on Intel machines supporting Turbo Boost how many cores have to be active/idle to enter which boost mode (frequency). Whether the HW really enters these boost modes can be verified via ./cpupower monitor. Signed-off-by: Thomas Renninger <trenn@suse.de> CC: lenb@kernel.org CC: linux@dominikbrodowski.net CC: cpufreq@vger.kernel.org Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'tools')
-rw-r--r--tools/power/cpupower/utils/cpufreq-info.c54
-rw-r--r--tools/power/cpupower/utils/helpers/cpuid.c29
-rw-r--r--tools/power/cpupower/utils/helpers/helpers.h13
-rw-r--r--tools/power/cpupower/utils/helpers/msr.c16
4 files changed, 95 insertions, 17 deletions
diff --git a/tools/power/cpupower/utils/cpufreq-info.c b/tools/power/cpupower/utils/cpufreq-info.c
index 8628644188c..5a1d25f056b 100644
--- a/tools/power/cpupower/utils/cpufreq-info.c
+++ b/tools/power/cpupower/utils/cpufreq-info.c
@@ -165,26 +165,56 @@ static int get_boost_mode(unsigned int cpu)
printf(_(" Supported: %s\n"), support ? _("yes") : _("no"));
printf(_(" Active: %s\n"), active ? _("yes") : _("no"));
- /* ToDo: Only works for AMD for now... */
-
if (cpupower_cpu_info.vendor == X86_VENDOR_AMD &&
cpupower_cpu_info.family >= 0x10) {
ret = decode_pstates(cpu, cpupower_cpu_info.family, b_states,
pstates, &pstate_no);
if (ret)
return ret;
- } else
- return 0;
- printf(_(" Boost States: %d\n"), b_states);
- printf(_(" Total States: %d\n"), pstate_no);
- for (i = 0; i < pstate_no; i++) {
- if (i < b_states)
- printf(_(" Pstate-Pb%d: %luMHz (boost state)\n"),
- i, pstates[i]);
+ printf(_(" Boost States: %d\n"), b_states);
+ printf(_(" Total States: %d\n"), pstate_no);
+ for (i = 0; i < pstate_no; i++) {
+ if (i < b_states)
+ printf(_(" Pstate-Pb%d: %luMHz (boost state)"
+ "\n"), i, pstates[i]);
+ else
+ printf(_(" Pstate-P%d: %luMHz\n"),
+ i - b_states, pstates[i]);
+ }
+ } else if (cpupower_cpu_info.caps & CPUPOWER_CAP_HAS_TURBO_RATIO) {
+ double bclk;
+ unsigned long long intel_turbo_ratio = 0;
+ unsigned int ratio;
+
+ /* Any way to autodetect this ? */
+ if (cpupower_cpu_info.caps & CPUPOWER_CAP_IS_SNB)
+ bclk = 100.00;
else
- printf(_(" Pstate-P%d: %luMHz\n"),
- i - b_states, pstates[i]);
+ bclk = 133.33;
+ intel_turbo_ratio = msr_intel_get_turbo_ratio(cpu);
+ dprint (" Ratio: 0x%llx - bclk: %f\n",
+ intel_turbo_ratio, bclk);
+
+ ratio = (intel_turbo_ratio >> 24) & 0xFF;
+ if (ratio)
+ printf(_(" %.0f MHz max turbo 4 active cores\n"),
+ ratio * bclk);
+
+ ratio = (intel_turbo_ratio >> 16) & 0xFF;
+ if (ratio)
+ printf(_(" %.0f MHz max turbo 3 active cores\n"),
+ ratio * bclk);
+
+ ratio = (intel_turbo_ratio >> 8) & 0xFF;
+ if (ratio)
+ printf(_(" %.0f MHz max turbo 2 active cores\n"),
+ ratio * bclk);
+
+ ratio = (intel_turbo_ratio >> 0) & 0xFF;
+ if (ratio)
+ printf(_(" %.0f MHz max turbo 1 active cores\n"),
+ ratio * bclk);
}
return 0;
}
diff --git a/tools/power/cpupower/utils/helpers/cpuid.c b/tools/power/cpupower/utils/helpers/cpuid.c
index 944b2c1659d..a97f091fcf2 100644
--- a/tools/power/cpupower/utils/helpers/cpuid.c
+++ b/tools/power/cpupower/utils/helpers/cpuid.c
@@ -130,10 +130,37 @@ out:
cpu_info->caps |= CPUPOWER_CAP_AMD_CBP;
}
- /* Intel's perf-bias MSR support */
if (cpu_info->vendor == X86_VENDOR_INTEL) {
+ /* Intel's perf-bias MSR support */
if (cpuid_level >= 6 && (cpuid_ecx(6) & (1 << 3)))
cpu_info->caps |= CPUPOWER_CAP_PERF_BIAS;
+
+ /* Intel's Turbo Ratio Limit support */
+ if (cpu_info->family == 6) {
+ switch (cpu_info->model) {
+ case 0x1A: /* Core i7, Xeon 5500 series
+ * Bloomfield, Gainstown NHM-EP
+ */
+ case 0x1E: /* Core i7 and i5 Processor
+ * Clarksfield, Lynnfield, Jasper Forest
+ */
+ case 0x1F: /* Core i7 and i5 Processor - Nehalem */
+ case 0x25: /* Westmere Client
+ * Clarkdale, Arrandale
+ */
+ case 0x2C: /* Westmere EP - Gulftown */
+ cpu_info->caps |= CPUPOWER_CAP_HAS_TURBO_RATIO;
+ case 0x2A: /* SNB */
+ case 0x2D: /* SNB Xeon */
+ cpu_info->caps |= CPUPOWER_CAP_HAS_TURBO_RATIO;
+ cpu_info->caps |= CPUPOWER_CAP_IS_SNB;
+ break;
+ case 0x2E: /* Nehalem-EX Xeon - Beckton */
+ case 0x2F: /* Westmere-EX Xeon - Eagleton */
+ default:
+ break;
+ }
+ }
}
/* printf("ID: %u - Extid: 0x%x - Caps: 0x%llx\n",
diff --git a/tools/power/cpupower/utils/helpers/helpers.h b/tools/power/cpupower/utils/helpers/helpers.h
index 048f065925c..9125a551ac1 100644
--- a/tools/power/cpupower/utils/helpers/helpers.h
+++ b/tools/power/cpupower/utils/helpers/helpers.h
@@ -52,10 +52,12 @@ extern int be_verbose;
enum cpupower_cpu_vendor {X86_VENDOR_UNKNOWN = 0, X86_VENDOR_INTEL,
X86_VENDOR_AMD, X86_VENDOR_MAX};
-#define CPUPOWER_CAP_INV_TSC 0x00000001
-#define CPUPOWER_CAP_APERF 0x00000002
-#define CPUPOWER_CAP_AMD_CBP 0x00000004
-#define CPUPOWER_CAP_PERF_BIAS 0x00000008
+#define CPUPOWER_CAP_INV_TSC 0x00000001
+#define CPUPOWER_CAP_APERF 0x00000002
+#define CPUPOWER_CAP_AMD_CBP 0x00000004
+#define CPUPOWER_CAP_PERF_BIAS 0x00000008
+#define CPUPOWER_CAP_HAS_TURBO_RATIO 0x00000010
+#define CPUPOWER_CAP_IS_SNB 0x00000011
#define MAX_HW_PSTATES 10
@@ -111,6 +113,7 @@ extern int write_msr(int cpu, unsigned int idx, unsigned long long val);
extern int msr_intel_set_perf_bias(unsigned int cpu, unsigned int val);
extern int msr_intel_get_perf_bias(unsigned int cpu);
+extern unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu);
extern int msr_intel_has_boost_support(unsigned int cpu);
extern int msr_intel_boost_is_active(unsigned int cpu);
@@ -157,6 +160,8 @@ static inline int msr_intel_set_perf_bias(unsigned int cpu, unsigned int val)
{ return -1; };
static inline int msr_intel_get_perf_bias(unsigned int cpu)
{ return -1; };
+static inline unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu)
+{ return 0; };
static inline int msr_intel_has_boost_support(unsigned int cpu)
{ return -1; };
diff --git a/tools/power/cpupower/utils/helpers/msr.c b/tools/power/cpupower/utils/helpers/msr.c
index 93d48bd56e5..7869ca64dfd 100644
--- a/tools/power/cpupower/utils/helpers/msr.c
+++ b/tools/power/cpupower/utils/helpers/msr.c
@@ -11,6 +11,7 @@
#define MSR_IA32_PERF_STATUS 0x198
#define MSR_IA32_MISC_ENABLES 0x1a0
#define MSR_IA32_ENERGY_PERF_BIAS 0x1b0
+#define MSR_NEHALEM_TURBO_RATIO_LIMIT 0x1ad
/*
* read_msr
@@ -79,6 +80,7 @@ int msr_intel_has_boost_support(unsigned int cpu)
ret = read_msr(cpu, MSR_IA32_MISC_ENABLES, &misc_enables);
if (ret)
return ret;
+
return (misc_enables >> 38) & 0x1;
}
@@ -119,4 +121,18 @@ int msr_intel_set_perf_bias(unsigned int cpu, unsigned int val)
return ret;
return 0;
}
+
+unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu)
+{
+ unsigned long long val;
+ int ret;
+
+ if (!(cpupower_cpu_info.caps & CPUPOWER_CAP_HAS_TURBO_RATIO))
+ return -1;
+
+ ret = read_msr(cpu, MSR_NEHALEM_TURBO_RATIO_LIMIT, &val);
+ if (ret)
+ return ret;
+ return val;
+}
#endif