JNIEXPORT jlong JNICALL Java_platforms_x86_X86_1DVFS_getTransitionLatency
(JNIEnv *env, jobject obj, jint cpu)
{
return (jlong) cpufreq_get_transition_latency((unsigned long)cpu);
}
static void cpu_desc_summary (struct cpu_desc *cpudesc)
{
printf ("-= CPU Characteristics =-\n");
print_s("Architecture:", cpu_desc_get_architecture (cpudesc));
int cpu_mode = cpu_desc_get_mode (cpudesc);
if (cpu_mode)
{
char mbuf[32], *p = mbuf;
if (cpu_mode & MODE_32BIT)
{
strcpy (p, "32-bit, ");
p += 8;
}
if (cpu_mode & MODE_64BIT)
{
strcpy (p, "64-bit, ");
p += 8;
}
*(p - 2) = '\0';
print_s("CPU op-mode(s):", mbuf);
}
#if !defined(WORDS_BIGENDIAN)
print_s("Byte Order:", "Little Endian");
#else
print_s("Byte Order:", "Big Endian");
#endif
int cpu, ncpus = cpu_desc_get_ncpus (cpudesc);
print_d("CPU(s):", ncpus);
unsigned int nsockets, ncores, nthreads;
get_cputopology_read (&nsockets, &ncores, &nthreads);
print_u("Thread(s) per core:", nthreads);
print_u("Core(s) per socket:", ncores);
print_u("Socket(s):", nsockets);
print_s("Vendor ID:", cpu_desc_get_vendor (cpudesc));
print_s("CPU Family:", cpu_desc_get_family (cpudesc));
print_s("Model:", cpu_desc_get_model (cpudesc));
print_s("Model name:", cpu_desc_get_model_name (cpudesc));
for (cpu = 0; cpu < ncpus; cpu++)
{
printf ("-CPU%d-\n", cpu);
bool cpu_hot_pluggable = get_processor_is_hot_pluggable (cpu);
int cpu_online = get_processor_is_online (cpu);
print_s ("CPU is Hot Pluggable:", cpu_hot_pluggable ?
(cpu_online ? "yes (online)" : "yes (offline)") : "no");
unsigned long latency = cpufreq_get_transition_latency (cpu);
if (latency)
print_s("Maximum Transition Latency:",
cpufreq_duration_to_string (latency));
unsigned long freq_kernel = cpufreq_get_freq_kernel (cpu);
if (freq_kernel > 0)
print_s("Current CPU Frequency:", cpufreq_freq_to_string (freq_kernel));
struct cpufreq_available_frequencies *cpufreqs, *curr;
cpufreqs = curr = cpufreq_get_available_freqs (cpu);
if (curr)
{
print_key_s("Available CPU Frequencies:");
while (curr)
{
printf ("%s ",
cpufreq_freq_to_string
(cpufreq_get_available_freqs_value (curr)));
curr = cpufreq_get_available_freqs_next (curr);
}
printf ("\n");
cpufreq_available_frequencies_unref(cpufreqs);
}
unsigned long freq_min, freq_max;
if (0 == cpufreq_get_hardware_limits (cpu, &freq_min, &freq_max))
{
char *min_s = cpufreq_freq_to_string (freq_min),
*max_s = cpufreq_freq_to_string (freq_max);
print_range_s("Hardware Limits:", min_s, max_s);
free (min_s);
free (max_s);
}
char *freq_governor = cpufreq_get_governor (cpu);
if (freq_governor)
{
print_s ("CPU Freq Current Governor:", freq_governor);
free (freq_governor);
}
char *freq_governors = cpufreq_get_available_governors (cpu);
if (freq_governors)
{
print_s ("CPU Freq Available Governors:", freq_governors);
free (freq_governors);
}
char *freq_driver = cpufreq_get_driver (cpu);
if (freq_driver)
{
print_s ("CPU Freq Driver:", freq_driver);
free (freq_driver);
}
}
char *cpu_virtflag = cpu_desc_get_virtualization_flag (cpudesc);
if (cpu_virtflag)
print_s("Virtualization:", cpu_virtflag);
}