lib/libkvm/kvm_pcpu.c

74 _kvm_pcpu_init(kvm_t *kd)
80 	if (kvm_nlist(kd, kvm_pcpu_nl) < 0)
83 		_kvm_err(kd, kd->program, "unable to find cpuid_to_pcpu");
87 		_kvm_err(kd, kd->program, "unable to find mp_maxcpus");
90 	if (kvm_read(kd, kvm_pcpu_nl[NL_MP_MAXCPUS].n_value, &max,
92 		_kvm_err(kd, kd->program, "cannot read mp_maxcpus");
96 		_kvm_err(kd, kd->program, "unable to find mp_ncpus");
99 	if (kvm_read(kd, kvm_pcpu_nl[NL_MP_NCPUS].n_value, &mp_ncpus,
101 		_kvm_err(kd, kd->program, "cannot read mp_ncpus");
107 		_kvm_err(kd, kd->program, "out of memory");
110 	if (kvm_read(kd, kvm_pcpu_nl[NL_CPUID_TO_PCPU].n_value, data, len) !=
112 		_kvm_err(kd, kd->program, "cannot read cpuid_to_pcpu array");
131 kvm_getpcpu(kvm_t *kd, int cpu)
135 	if (kd == NULL) {
141 		if (_kvm_pcpu_init(kd) < 0)
149 		_kvm_err(kd, kd->program, "out of memory");
152 	if (kvm_read(kd, (uintptr_t)pcpu_data[cpu], buf,
154 		_kvm_err(kd, kd->program, "unable to read per-CPU data");
162 kvm_getmaxcpu(kvm_t *kd)
165 	if (kd == NULL) {
171 		if (_kvm_pcpu_init(kd) < 0)
177 kvm_getncpus(kvm_t *kd)
181 		if (_kvm_pcpu_init(kd) < 0)
187 _kvm_dpcpu_setcpu(kvm_t *kd, u_int cpu, int report_error)
190 	if (!kd->dpcpu_initialized) {
192 			_kvm_err(kd, kd->program, "%s: not initialized",
196 	if (cpu >= kd->dpcpu_maxcpus) {
198 			_kvm_err(kd, kd->program, "%s: CPU %u too big",
202 	if (kd->dpcpu_off[cpu] == 0) {
204 			_kvm_err(kd, kd->program, "%s: CPU %u not found",
208 	kd->dpcpu_curcpu = cpu;
209 	kd->dpcpu_curoff = kd->dpcpu_off[cpu];
217 _kvm_dpcpu_init(kvm_t *kd)
239 	if (_kvm_nlist(kd, nl, 0) != 0)
241 	if (kvm_read(kd, nl[NLIST_MP_MAXCPUS].n_value, &dpcpu_maxcpus,
248 	if (kvm_read(kd, nl[NLIST_DPCPU_OFF].n_value, dpcpu_off_buf, len) !=
253 	kd->dpcpu_start = nl[NLIST_START_SET_PCPU].n_value;
254 	kd->dpcpu_stop = nl[NLIST_STOP_SET_PCPU].n_value;
255 	kd->dpcpu_maxcpus = dpcpu_maxcpus;
256 	kd->dpcpu_off = dpcpu_off_buf;
257 	kd->dpcpu_initialized = 1;
258 	(void)_kvm_dpcpu_setcpu(kd, 0, 0);
267 _kvm_dpcpu_initialized(kvm_t *kd, int intialize)
270 	if (kd->dpcpu_initialized || !intialize)
271 		return (kd->dpcpu_initialized);
273 	(void)_kvm_dpcpu_init(kd);
275 	return (kd->dpcpu_initialized);
283 _kvm_dpcpu_validaddr(kvm_t *kd, uintptr_t value)
289 	if (!kd->dpcpu_initialized)
292 	if (value < kd->dpcpu_start || value >= kd->dpcpu_stop)
295 	return (kd->dpcpu_curoff + value);
299 kvm_dpcpu_setcpu(kvm_t *kd, u_int cpu)
303 	if (!kd->dpcpu_initialized) {
304 		ret = _kvm_dpcpu_init(kd);
306 			_kvm_err(kd, kd->program, "%s: init failed",
312 	return (_kvm_dpcpu_setcpu(kd, cpu, 1));
319 kvm_read_zpcpu(kvm_t *kd, u_long base, void *buf, size_t size, int cpu)
322 	return (kvm_read(kd, (uintptr_t)(base + sizeof(struct pcpu) * cpu),
330 kvm_counter_u64_fetch(kvm_t *kd, u_long base)
335 		if (_kvm_pcpu_init(kd) < 0)
340 		if (kvm_read_zpcpu(kd, base, &c, sizeof(c), i) != sizeof(c))