static GObject * cpufreq_monitor_libcpufreq_constructor (GType type, guint n_construct_properties, GObjectConstructParam *construct_params) { GObject *object; gulong max_freq, min_freq; guint cpu; object = G_OBJECT_CLASS ( cpufreq_monitor_libcpufreq_parent_class)->constructor (type, n_construct_properties, construct_params); g_object_get (G_OBJECT (object), "cpu", &cpu, NULL); if (cpufreq_get_hardware_limits (cpu, &min_freq, &max_freq) != 0) { g_warning ("Error getting CPUINFO_MAX\n"); max_freq = -1; } g_object_set (G_OBJECT (object), "max-frequency", max_freq, NULL); return object; }
int set_process_cpu_and_freq(const unsigned int cpu_index) { // set the core-affinity cpu_set_t cpu_set; CPU_ZERO(&cpu_set); CPU_SET(cpu_index, &cpu_set); sched_setaffinity(0, sizeof(cpu_set), &cpu_set); // set CPU governor unsigned long cpu_max = 0; unsigned long cpu_min = 0; unsigned long cpu_cur = 0; if (cpufreq_cpu_exists(cpu_index) != 0) { printf("Invalid CPU index!\n"); return -1; } if (cpufreq_get_hardware_limits(cpu_index, &cpu_min, &cpu_max) != 0) { printf("Unable to get hardware limits!\n"); return -1; } if (cpufreq_set_frequency(cpu_index, cpu_max) != 0) { printf("Unable to set frequency(%luMHz) Are u root?\n", cpu_max / 1000); return -1; } cpu_cur = (cpufreq_get_freq_kernel(cpu_index) / 1000); printf("Current CPU %u Frequency: %lu MHz\n\n", cpu_index, cpu_cur); return 0; }
int single_freq_init (actuator_t *act) { int err; struct cpufreq_policy *policy; struct cpufreq_available_frequencies *freq_list; freq_scaler_data_t *data; unsigned long freq_min, freq_max; act->data = data = malloc(sizeof(freq_scaler_data_t)); fail_if(!data, "cannot allocate freq data block"); err = cpufreq_get_hardware_limits(act->core, &freq_min, &freq_max); fail_if(err, "cannot get cpufreq hardware limits"); act->min = freq_min; act->max = freq_max; policy = cpufreq_get_policy(act->core); fail_if(!policy, "cannot get cpufreq policy"); if (strcmp(policy->governor, "userspace") != 0) { err = cpufreq_modify_policy_governor(act->core, "userspace"); policy = cpufreq_get_policy(act->core); fail_if (strcmp(policy->governor, "userspace") != 0, "cannot set cpufreq policy to userspace"); } freq_list = cpufreq_get_available_frequencies(act->core); data->freq_count = create_freq_array(freq_list, &data->freq_array); fail_if(data->freq_count < 1, "cannot get frequency list"); act->value = act->set_value = cpufreq_get_freq_kernel(act->core); data->cur_index = get_freq_index(data, act->value); return 0; fail: return -1; }
static int get_hardware_limits(unsigned int cpu) { if (cpufreq_get_hardware_limits(cpu, &min, &max)) return -EINVAL; printf("Your frequency limits is:\n"); printf("MIN: %luMHZ and MAX:%luMHZ\n", min,max); return 0; }
GkrellmMonitor* gkrellm_init_plugin(void) { /* If this next call is made, the background and krell images for this plugin can be custom themed by putting bg_meter.png or krell.png in the subdirectory STYLE_NAME of the theme directory. Text colors (and other things) can also be specified for the plugin with gkrellmrc lines like: StyleMeter STYLE_NAME.textcolor orange black shadow If no custom theming has been done, then all above calls using style_id will be equivalent to style_id = DEFAULT_STYLE_ID. */ pGK = gkrellm_ticks(); style_id = gkrellm_add_meter_style(&plugin_mon, STYLE_NAME); monitor = &plugin_mon; /* determine number of cpus */ for( ncpu = 0; cpufreq_get_freq_kernel(ncpu)>0; ++ncpu ) ; ncpu = ncpu > NCPU_MAX ? NCPU_MAX : ncpu; /* determine maximal frequency */ unsigned int cpu; for ( cpu = 0; cpu<ncpu; ++cpu) { unsigned long khz_min = 0; unsigned long khz_max_i = 0; cpufreq_get_hardware_limits( cpu, &khz_min, &khz_max_i ); khz_max = khz_max < khz_max_i ? khz_max_i : khz_max; } read_khz(); strcpy(empty, ""); if (gov_enable_current) { read_governors(); } else { for ( cpu=0; cpu<ncpu; ++cpu ) { strcpy(governor[cpu], ""); } } return &plugin_mon; }
JNIEXPORT jint JNICALL Java_platforms_x86_X86_1DVFS_getHardwareLimits (JNIEnv *env, jobject obj, jint cpu) { unsigned long min, max; jclass cls; jfieldID fid; int ret; ret = cpufreq_get_hardware_limits((unsigned int)cpu, &min, &max); if (ret < 0) return ret; cls = (*env)->GetObjectClass(env, obj); fid = (*env)->GetFieldID(env, cls, "minFreq", "J"); (*env)->SetLongField(env, obj, fid, min); fid = (*env)->GetFieldID(env, cls, "maxFreq", "J"); (*env)->SetLongField(env, obj, fid, max); (*env)->DeleteLocalRef(env, cls); return ret; }
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); }
int main(int argc, char *argv[]) { struct timespec ts,ts1; int i,ncpu; int idcpu; unsigned long freq[8]; XEvent event; char gov[20]; char drv[20],*ptr,*endptr; char prg[LN_PATH]; ts.tv_sec=0; ts.tv_nsec=DELAY; prg[0]=0; idcpu=0; for(i=0;i<MAX_CPU;i++) freq[i]=0; if(argc >1) { for (i=1; i<=argc; i++) { if (!strcmp(argv[i], "-v")) { printf(WMCPUFREQ_VERSION); exit(0); } if (!strcmp(argv[i], "-exe")) { if(strlen(argv[i+1]) < LN_PATH ) strcpy(prg,argv[i+1]); break; } if (!strcmp(argv[i], "-cpuid")) { if(strlen(argv[i+1]) < LN_PATH ) idcpu=strtol(argv[i+1],&endptr,0); printf("cpuid= %d \n",idcpu); break; } printf("only -v, -exe, -cpuid supported \n"); exit(0); } } /* basic checks */ if ( idcpu < 0 ) { printf("cpuid < 0 \n"); exit(-1); } /* get driver name (guess all cpu have the same driver) */ ptr=cpufreq_get_driver(cpu); if(!ptr) { printf("no driver found \n"); exit(-1); } strcpy(drv,ptr); cpufreq_put_driver(ptr); /* get number of cpu (0=cpu0, 1=cpu1 ...) */ ncpu=-1; for(i=0;i<MAX_CPU;i++) { if( cpufreq_cpu_exists(idcpu+i) ==0) { printf("cpuid %d found\n",idcpu+i); ncpu=i; } } switch ( ncpu ) { case -1: printf("no cpuid found \n"); exit(-1); case 0: wm_xpm=wmcpufreq_master_xpm_1; wm_bits=wmcpufreq_mask_bits_1; break; case 1: wm_xpm=wmcpufreq_master_xpm_2; wm_bits=wmcpufreq_mask_bits_2; break; case 2: wm_xpm=wmcpufreq_master_3; wm_bits=wmcpufreq_mask_3_bits; break; case 3: wm_xpm=wmcpufreq_master_3; wm_bits=wmcpufreq_mask_3_bits; break; default: printf("no yet implemented: cpuid %d \n",ncpu); exit(-1); break; } /* guess every cpu has the same limits */ if(cpufreq_get_hardware_limits(cpu, &f_min, &f_max)) { printf("can't determine hardware limits \n"); exit(-1); } openXwindow(argc,argv, wm_xpm, (char*)wm_bits, wmcpufreq_mask_width, wmcpufreq_mask_height); while(1) { /* Process any pending X events */ while(XPending(display)) { XNextEvent(display, &event); switch(event.type) { case Expose: RedrawWindow(); break; case ButtonPress: if(strlen(prg)) execCommand(prg); break; case ButtonRelease: break; } } RedrawWindow(); /* get info */ for(i=0;i<=ncpu;i++) freq[i]=cpufreq_get_freq_kernel(i+idcpu); policy=cpufreq_get_policy(cpu); strcpy(gov,policy->governor); max=policy->max; min=policy->min; cpufreq_put_policy(policy); /* show info */ show_mhz(freq,ncpu); if (ncpu==0) show_driver(drv); show_governor(gov); /* delay */ nanosleep(&ts,&ts1); } }