static void fill_pcpu(struct pcpu ***pcpup, int* maxcpup) { struct pcpu **pcpu; int maxcpu, i; *pcpup = NULL; if (kd == NULL) return; maxcpu = kvm_getmaxcpu(kd); if (maxcpu < 0) errx(1, "kvm_getmaxcpu: %s", kvm_geterr(kd)); pcpu = calloc(maxcpu, sizeof(struct pcpu *)); if (pcpu == NULL) err(1, "calloc"); for (i = 0; i < maxcpu; i++) { pcpu[i] = kvm_getpcpu(kd, i); if (pcpu[i] == (struct pcpu *)-1) errx(1, "kvm_getpcpu: %s", kvm_geterr(kd)); } *maxcpup = maxcpu; *pcpup = pcpu; }
int kvm_getcptime(kvm_t *kd, long *cp_time) { struct pcpu *pc; int i, j, maxcpu; if (kd == NULL) { kvm_cp_time_cached = 0; return (0); } if (ISALIVE(kd)) return (getsysctl(kd, "kern.cp_time", cp_time, sizeof(long) * CPUSTATES)); if (!kd->arch->ka_native(kd)) { _kvm_err(kd, kd->program, "cannot read cp_time from non-native core"); return (-1); } if (kvm_cp_time_cached == 0) { if (_kvm_cp_time_init(kd) < 0) return (-1); } /* If this kernel has a "cp_time[]" symbol, then just read that. */ if (kvm_cp_time_nl[NL_CP_TIME].n_value != 0) { if (kvm_read(kd, kvm_cp_time_nl[NL_CP_TIME].n_value, cp_time, sizeof(long) * CPUSTATES) != sizeof(long) * CPUSTATES) { _kvm_err(kd, kd->program, "cannot read cp_time array"); return (-1); } return (0); } /* * If we don't have that symbol, then we have to simulate * "cp_time[]" by adding up the individual times for each CPU. */ maxcpu = kvm_getmaxcpu(kd); if (maxcpu < 0) return (-1); for (i = 0; i < CPUSTATES; i++) cp_time[i] = 0; for (i = 0; i < maxcpu; i++) { pc = kvm_getpcpu(kd, i); if (pc == NULL) continue; if (pc == (void *)-1) return (-1); for (j = 0; j < CPUSTATES; j++) cp_time[j] += pc->pc_cp_time[j]; free(pc); } return (0); }