#include <mach/boolean.h>
#include <mach/policy.h>
#include <mach/processor.h>
#include <mach/processor_info.h>
#include <mach/vm_param.h>
#include <kern/cpu_number.h>
#include <kern/host.h>
#include <kern/machine.h>
#include <kern/misc_protos.h>
#include <kern/processor.h>
#include <kern/sched.h>
#include <kern/task.h>
#include <kern/thread.h>
#include <kern/ipc_host.h>
#include <kern/ipc_tt.h>
#include <ipc/ipc_port.h>
#include <kern/kalloc.h>
#include <security/mac_mach_internal.h>
#if defined(CONFIG_XNUPOST)
#include <tests/xnupost.h>
#endif
#include <mach/mach_host_server.h>
#include <mach/processor_set_server.h>
struct processor_set pset0;
struct pset_node pset_node0;
decl_simple_lock_data(static, pset_node_lock);
lck_grp_t pset_lck_grp;
queue_head_t tasks;
queue_head_t terminated_tasks;
queue_head_t corpse_tasks;
int tasks_count;
int terminated_tasks_count;
queue_head_t threads;
int threads_count;
decl_lck_mtx_data(, tasks_threads_lock);
decl_lck_mtx_data(, tasks_corpse_lock);
processor_t processor_list;
unsigned int processor_count;
static processor_t processor_list_tail;
decl_simple_lock_data(, processor_list_lock);
uint32_t processor_avail_count;
uint32_t processor_avail_count_user;
processor_t master_processor;
int master_cpu = 0;
boolean_t sched_stats_active = FALSE;
processor_t processor_array[MAX_SCHED_CPUS] = { 0 };
#if defined(CONFIG_XNUPOST)
kern_return_t ipi_test(void);
extern void arm64_ipi_test(void);
kern_return_t
ipi_test()
{
#if __arm64__
processor_t p;
for (p = processor_list; p != NULL; p = p->processor_list) {
thread_bind(p);
thread_block(THREAD_CONTINUE_NULL);
kprintf("Running IPI test on cpu %d\n", p->cpu_id);
arm64_ipi_test();
}
thread_bind(PROCESSOR_NULL);
thread_block(THREAD_CONTINUE_NULL);
T_PASS("Done running IPI tests");
#else
T_PASS("Unsupported platform. Not running IPI tests");
#endif
return KERN_SUCCESS;
}
#endif
int sched_enable_smt = 1;
void
processor_bootstrap(void)
{
lck_grp_init(&pset_lck_grp, "pset", LCK_GRP_ATTR_NULL);
simple_lock_init(&pset_node_lock, 0);
pset_node0.psets = &pset0;
pset_init(&pset0, &pset_node0);
queue_init(&tasks);
queue_init(&terminated_tasks);
queue_init(&threads);
queue_init(&corpse_tasks);
simple_lock_init(&processor_list_lock, 0);
master_processor = cpu_to_processor(master_cpu);
processor_init(master_processor, master_cpu, &pset0);
}
void
processor_init(
processor_t processor,
int cpu_id,
processor_set_t pset)
{
spl_t s;
if (processor != master_processor) {
SCHED(processor_init)(processor);
}
assert(cpu_id < MAX_SCHED_CPUS);
processor->state = PROCESSOR_OFF_LINE;
processor->active_thread = processor->startup_thread = processor->idle_thread = THREAD_NULL;
processor->processor_set = pset;
processor_state_update_idle(processor);
processor->starting_pri = MINPRI;
processor->cpu_id = cpu_id;
timer_call_setup(&processor->quantum_timer, thread_quantum_expire, processor);
processor->quantum_end = UINT64_MAX;
processor->deadline = UINT64_MAX;
processor->first_timeslice = FALSE;
processor->processor_offlined = false;
processor->processor_primary = processor;
processor->processor_secondary = NULL;
processor->is_SMT = false;
processor->is_recommended = true;
processor->processor_self = IP_NULL;
processor_data_init(processor);
processor->processor_list = NULL;
processor->cpu_quiesce_state = CPU_QUIESCE_COUNTER_NONE;
processor->cpu_quiesce_last_checkin = 0;
processor->must_idle = false;
s = splsched();
pset_lock(pset);
bit_set(pset->cpu_bitmask, cpu_id);
bit_set(pset->recommended_bitmask, cpu_id);
bit_set(pset->primary_map, cpu_id);
bit_set(pset->cpu_state_map[PROCESSOR_OFF_LINE], cpu_id);
if (pset->cpu_set_count++ == 0) {
pset->cpu_set_low = pset->cpu_set_hi = cpu_id;
} else {
pset->cpu_set_low = (cpu_id < pset->cpu_set_low)? cpu_id: pset->cpu_set_low;
pset->cpu_set_hi = (cpu_id > pset->cpu_set_hi)? cpu_id: pset->cpu_set_hi;
}
pset_unlock(pset);
splx(s);
simple_lock(&processor_list_lock, LCK_GRP_NULL);
if (processor_list == NULL) {
processor_list = processor;
} else {
processor_list_tail->processor_list = processor;
}
processor_list_tail = processor;
processor_count++;
processor_array[cpu_id] = processor;
simple_unlock(&processor_list_lock);
}
void
processor_set_primary(
processor_t processor,
processor_t primary)
{
assert(processor->processor_primary == primary || processor->processor_primary == processor);
processor->processor_primary = primary;
assert(primary->processor_secondary == NULL || primary->processor_secondary == processor);
if (primary != processor) {
assert(processor->processor_secondary == NULL);
primary->processor_secondary = processor;
primary->is_SMT = TRUE;
processor->is_SMT = TRUE;
processor_set_t pset = processor->processor_set;
spl_t s = splsched();
pset_lock(pset);
bit_clear(pset->primary_map, processor->cpu_id);
pset_unlock(pset);
splx(s);
}
}
processor_set_t
processor_pset(
processor_t processor)
{
return processor->processor_set;
}
void
processor_state_update_idle(processor_t processor)
{
processor->current_pri = IDLEPRI;
processor->current_sfi_class = SFI_CLASS_KERNEL;
processor->current_recommended_pset_type = PSET_SMP;
processor->current_perfctl_class = PERFCONTROL_CLASS_IDLE;
processor->current_urgency = THREAD_URGENCY_NONE;
processor->current_is_NO_SMT = false;
processor->current_is_bound = false;
}
void
processor_state_update_from_thread(processor_t processor, thread_t thread)
{
processor->current_pri = thread->sched_pri;
processor->current_sfi_class = thread->sfi_class;
processor->current_recommended_pset_type = recommended_pset_type(thread);
processor->current_perfctl_class = thread_get_perfcontrol_class(thread);
processor->current_urgency = thread_get_urgency(thread, NULL, NULL);
#if DEBUG || DEVELOPMENT
processor->current_is_NO_SMT = (thread->sched_flags & TH_SFLAG_NO_SMT) || (thread->task->t_flags & TF_NO_SMT);
#else
processor->current_is_NO_SMT = (thread->sched_flags & TH_SFLAG_NO_SMT);
#endif
processor->current_is_bound = thread->bound_processor != PROCESSOR_NULL;
}
void
processor_state_update_explicit(processor_t processor, int pri, sfi_class_id_t sfi_class,
pset_cluster_type_t pset_type, perfcontrol_class_t perfctl_class, thread_urgency_t urgency)
{
processor->current_pri = pri;
processor->current_sfi_class = sfi_class;
processor->current_recommended_pset_type = pset_type;
processor->current_perfctl_class = perfctl_class;
processor->current_urgency = urgency;
}
pset_node_t
pset_node_root(void)
{
return &pset_node0;
}
processor_set_t
pset_create(
pset_node_t node)
{
if (SCHED(multiple_psets_enabled) == FALSE) {
return processor_pset(master_processor);
}
processor_set_t *prev, pset = kalloc(sizeof(*pset));
if (pset != PROCESSOR_SET_NULL) {
pset_init(pset, node);
simple_lock(&pset_node_lock, LCK_GRP_NULL);
prev = &node->psets;
while (*prev != PROCESSOR_SET_NULL) {
prev = &(*prev)->pset_list;
}
*prev = pset;
simple_unlock(&pset_node_lock);
}
return pset;
}
processor_set_t
pset_find(
uint32_t cluster_id,
processor_set_t default_pset)
{
simple_lock(&pset_node_lock, LCK_GRP_NULL);
pset_node_t node = &pset_node0;
processor_set_t pset = NULL;
do {
pset = node->psets;
while (pset != NULL) {
if (pset->pset_cluster_id == cluster_id) {
break;
}
pset = pset->pset_list;
}
} while ((node = node->node_list) != NULL);
simple_unlock(&pset_node_lock);
if (pset == NULL) {
return default_pset;
}
return pset;
}
void
pset_init(
processor_set_t pset,
pset_node_t node)
{
if (pset != &pset0) {
SCHED(pset_init)(pset);
SCHED(rt_init)(pset);
}
pset->online_processor_count = 0;
pset->load_average = 0;
pset->cpu_set_low = pset->cpu_set_hi = 0;
pset->cpu_set_count = 0;
pset->last_chosen = -1;
pset->cpu_bitmask = 0;
pset->recommended_bitmask = 0;
pset->primary_map = 0;
for (uint i = 0; i < PROCESSOR_STATE_LEN; i++) {
pset->cpu_state_map[i] = 0;
}
pset->pending_AST_URGENT_cpu_mask = 0;
pset->pending_AST_PREEMPT_cpu_mask = 0;
#if defined(CONFIG_SCHED_DEFERRED_AST)
pset->pending_deferred_AST_cpu_mask = 0;
#endif
pset->pending_spill_cpu_mask = 0;
pset_lock_init(pset);
pset->pset_self = IP_NULL;
pset->pset_name_self = IP_NULL;
pset->pset_list = PROCESSOR_SET_NULL;
pset->node = node;
pset->pset_cluster_type = PSET_SMP;
pset->pset_cluster_id = 0;
simple_lock(&pset_node_lock, LCK_GRP_NULL);
node->pset_count++;
simple_unlock(&pset_node_lock);
}
kern_return_t
processor_info_count(
processor_flavor_t flavor,
mach_msg_type_number_t *count)
{
switch (flavor) {
case PROCESSOR_BASIC_INFO:
*count = PROCESSOR_BASIC_INFO_COUNT;
break;
case PROCESSOR_CPU_LOAD_INFO:
*count = PROCESSOR_CPU_LOAD_INFO_COUNT;
break;
default:
return cpu_info_count(flavor, count);
}
return KERN_SUCCESS;
}
kern_return_t
processor_info(
processor_t processor,
processor_flavor_t flavor,
host_t *host,
processor_info_t info,
mach_msg_type_number_t *count)
{
int cpu_id, state;
kern_return_t result;
if (processor == PROCESSOR_NULL) {
return KERN_INVALID_ARGUMENT;
}
cpu_id = processor->cpu_id;
switch (flavor) {
case PROCESSOR_BASIC_INFO:
{
processor_basic_info_t basic_info;
if (*count < PROCESSOR_BASIC_INFO_COUNT) {
return KERN_FAILURE;
}
basic_info = (processor_basic_info_t) info;
basic_info->cpu_type = slot_type(cpu_id);
basic_info->cpu_subtype = slot_subtype(cpu_id);
state = processor->state;
if (state == PROCESSOR_OFF_LINE
#if defined(__x86_64__)
|| !processor->is_recommended
#endif
) {
basic_info->running = FALSE;
} else {
basic_info->running = TRUE;
}
basic_info->slot_num = cpu_id;
if (processor == master_processor) {
basic_info->is_master = TRUE;
} else {
basic_info->is_master = FALSE;
}
*count = PROCESSOR_BASIC_INFO_COUNT;
*host = &realhost;
return KERN_SUCCESS;
}
case PROCESSOR_CPU_LOAD_INFO:
{
processor_cpu_load_info_t cpu_load_info;
timer_t idle_state;
uint64_t idle_time_snapshot1, idle_time_snapshot2;
uint64_t idle_time_tstamp1, idle_time_tstamp2;
if (*count < PROCESSOR_CPU_LOAD_INFO_COUNT) {
return KERN_FAILURE;
}
cpu_load_info = (processor_cpu_load_info_t) info;
if (precise_user_kernel_time) {
cpu_load_info->cpu_ticks[CPU_STATE_USER] =
(uint32_t)(timer_grab(&PROCESSOR_DATA(processor, user_state)) / hz_tick_interval);
cpu_load_info->cpu_ticks[CPU_STATE_SYSTEM] =
(uint32_t)(timer_grab(&PROCESSOR_DATA(processor, system_state)) / hz_tick_interval);
} else {
uint64_t tval = timer_grab(&PROCESSOR_DATA(processor, user_state)) +
timer_grab(&PROCESSOR_DATA(processor, system_state));
cpu_load_info->cpu_ticks[CPU_STATE_USER] = (uint32_t)(tval / hz_tick_interval);
cpu_load_info->cpu_ticks[CPU_STATE_SYSTEM] = 0;
}
idle_state = &PROCESSOR_DATA(processor, idle_state);
idle_time_snapshot1 = timer_grab(idle_state);
idle_time_tstamp1 = idle_state->tstamp;
if (PROCESSOR_DATA(processor, current_state) != idle_state) {
cpu_load_info->cpu_ticks[CPU_STATE_IDLE] =
(uint32_t)(idle_time_snapshot1 / hz_tick_interval);
} else if ((idle_time_snapshot1 != (idle_time_snapshot2 = timer_grab(idle_state))) ||
(idle_time_tstamp1 != (idle_time_tstamp2 = idle_state->tstamp))) {
cpu_load_info->cpu_ticks[CPU_STATE_IDLE] =
(uint32_t)(idle_time_snapshot2 / hz_tick_interval);
} else {
idle_time_snapshot1 += mach_absolute_time() - idle_time_tstamp1;
cpu_load_info->cpu_ticks[CPU_STATE_IDLE] =
(uint32_t)(idle_time_snapshot1 / hz_tick_interval);
}
cpu_load_info->cpu_ticks[CPU_STATE_NICE] = 0;
*count = PROCESSOR_CPU_LOAD_INFO_COUNT;
*host = &realhost;
return KERN_SUCCESS;
}
default:
result = cpu_info(flavor, cpu_id, info, count);
if (result == KERN_SUCCESS) {
*host = &realhost;
}
return result;
}
}
kern_return_t
processor_start(
processor_t processor)
{
processor_set_t pset;
thread_t thread;
kern_return_t result;
spl_t s;
if (processor == PROCESSOR_NULL || processor->processor_set == PROCESSOR_SET_NULL) {
return KERN_INVALID_ARGUMENT;
}
if (processor == master_processor) {
processor_t prev;
prev = thread_bind(processor);
thread_block(THREAD_CONTINUE_NULL);
result = cpu_start(processor->cpu_id);
thread_bind(prev);
return result;
}
bool scheduler_disable = false;
if ((processor->processor_primary != processor) && (sched_enable_smt == 0)) {
if (cpu_can_exit(processor->cpu_id)) {
return KERN_SUCCESS;
}
scheduler_disable = true;
}
s = splsched();
pset = processor->processor_set;
pset_lock(pset);
if (processor->state != PROCESSOR_OFF_LINE) {
pset_unlock(pset);
splx(s);
return KERN_FAILURE;
}
pset_update_processor_state(pset, processor, PROCESSOR_START);
pset_unlock(pset);
splx(s);
if (processor->idle_thread == THREAD_NULL) {
result = idle_thread_create(processor);
if (result != KERN_SUCCESS) {
s = splsched();
pset_lock(pset);
pset_update_processor_state(pset, processor, PROCESSOR_OFF_LINE);
pset_unlock(pset);
splx(s);
return result;
}
}
if (processor->active_thread == THREAD_NULL &&
processor->startup_thread == THREAD_NULL) {
result = kernel_thread_create(processor_start_thread, NULL, MAXPRI_KERNEL, &thread);
if (result != KERN_SUCCESS) {
s = splsched();
pset_lock(pset);
pset_update_processor_state(pset, processor, PROCESSOR_OFF_LINE);
pset_unlock(pset);
splx(s);
return result;
}
s = splsched();
thread_lock(thread);
thread->bound_processor = processor;
processor->startup_thread = thread;
thread->state = TH_RUN;
thread->last_made_runnable_time = mach_absolute_time();
thread_unlock(thread);
splx(s);
thread_deallocate(thread);
}
if (processor->processor_self == IP_NULL) {
ipc_processor_init(processor);
}
result = cpu_start(processor->cpu_id);
if (result != KERN_SUCCESS) {
s = splsched();
pset_lock(pset);
pset_update_processor_state(pset, processor, PROCESSOR_OFF_LINE);
pset_unlock(pset);
splx(s);
return result;
}
if (scheduler_disable) {
assert(processor->processor_primary != processor);
sched_processor_enable(processor, FALSE);
}
ipc_processor_enable(processor);
return KERN_SUCCESS;
}
kern_return_t
processor_exit(
processor_t processor)
{
if (processor == PROCESSOR_NULL) {
return KERN_INVALID_ARGUMENT;
}
return processor_shutdown(processor);
}
kern_return_t
processor_start_from_user(
processor_t processor)
{
kern_return_t ret;
if (processor == PROCESSOR_NULL) {
return KERN_INVALID_ARGUMENT;
}
if (!cpu_can_exit(processor->cpu_id)) {
ret = sched_processor_enable(processor, TRUE);
} else {
ret = processor_start(processor);
}
return ret;
}
kern_return_t
processor_exit_from_user(
processor_t processor)
{
kern_return_t ret;
if (processor == PROCESSOR_NULL) {
return KERN_INVALID_ARGUMENT;
}
if (!cpu_can_exit(processor->cpu_id)) {
ret = sched_processor_enable(processor, FALSE);
} else {
ret = processor_shutdown(processor);
}
return ret;
}
kern_return_t
enable_smt_processors(bool enable)
{
if (machine_info.logical_cpu_max == machine_info.physical_cpu_max) {
return KERN_INVALID_ARGUMENT;
}
int ncpus = machine_info.logical_cpu_max;
for (int i = 1; i < ncpus; i++) {
processor_t processor = processor_array[i];
if (processor->processor_primary != processor) {
if (enable) {
processor_start_from_user(processor);
} else {
processor_exit_from_user(processor);
}
}
}
#define BSD_HOST 1
host_basic_info_data_t hinfo;
mach_msg_type_number_t count = HOST_BASIC_INFO_COUNT;
kern_return_t kret = host_info((host_t)BSD_HOST, HOST_BASIC_INFO, (host_info_t)&hinfo, &count);
if (kret != KERN_SUCCESS) {
return kret;
}
if (enable && (hinfo.logical_cpu != hinfo.logical_cpu_max)) {
return KERN_FAILURE;
}
if (!enable && (hinfo.logical_cpu != hinfo.physical_cpu)) {
return KERN_FAILURE;
}
return KERN_SUCCESS;
}
kern_return_t
processor_control(
processor_t processor,
processor_info_t info,
mach_msg_type_number_t count)
{
if (processor == PROCESSOR_NULL) {
return KERN_INVALID_ARGUMENT;
}
return cpu_control(processor->cpu_id, info, count);
}
kern_return_t
processor_set_create(
__unused host_t host,
__unused processor_set_t *new_set,
__unused processor_set_t *new_name)
{
return KERN_FAILURE;
}
kern_return_t
processor_set_destroy(
__unused processor_set_t pset)
{
return KERN_FAILURE;
}
kern_return_t
processor_get_assignment(
processor_t processor,
processor_set_t *pset)
{
int state;
if (processor == PROCESSOR_NULL) {
return KERN_INVALID_ARGUMENT;
}
state = processor->state;
if (state == PROCESSOR_SHUTDOWN || state == PROCESSOR_OFF_LINE) {
return KERN_FAILURE;
}
*pset = &pset0;
return KERN_SUCCESS;
}
kern_return_t
processor_set_info(
processor_set_t pset,
int flavor,
host_t *host,
processor_set_info_t info,
mach_msg_type_number_t *count)
{
if (pset == PROCESSOR_SET_NULL) {
return KERN_INVALID_ARGUMENT;
}
if (flavor == PROCESSOR_SET_BASIC_INFO) {
processor_set_basic_info_t basic_info;
if (*count < PROCESSOR_SET_BASIC_INFO_COUNT) {
return KERN_FAILURE;
}
basic_info = (processor_set_basic_info_t) info;
#if defined(__x86_64__)
basic_info->processor_count = processor_avail_count_user;
#else
basic_info->processor_count = processor_avail_count;
#endif
basic_info->default_policy = POLICY_TIMESHARE;
*count = PROCESSOR_SET_BASIC_INFO_COUNT;
*host = &realhost;
return KERN_SUCCESS;
} else if (flavor == PROCESSOR_SET_TIMESHARE_DEFAULT) {
policy_timeshare_base_t ts_base;
if (*count < POLICY_TIMESHARE_BASE_COUNT) {
return KERN_FAILURE;
}
ts_base = (policy_timeshare_base_t) info;
ts_base->base_priority = BASEPRI_DEFAULT;
*count = POLICY_TIMESHARE_BASE_COUNT;
*host = &realhost;
return KERN_SUCCESS;
} else if (flavor == PROCESSOR_SET_FIFO_DEFAULT) {
policy_fifo_base_t fifo_base;
if (*count < POLICY_FIFO_BASE_COUNT) {
return KERN_FAILURE;
}
fifo_base = (policy_fifo_base_t) info;
fifo_base->base_priority = BASEPRI_DEFAULT;
*count = POLICY_FIFO_BASE_COUNT;
*host = &realhost;
return KERN_SUCCESS;
} else if (flavor == PROCESSOR_SET_RR_DEFAULT) {
policy_rr_base_t rr_base;
if (*count < POLICY_RR_BASE_COUNT) {
return KERN_FAILURE;
}
rr_base = (policy_rr_base_t) info;
rr_base->base_priority = BASEPRI_DEFAULT;
rr_base->quantum = 1;
*count = POLICY_RR_BASE_COUNT;
*host = &realhost;
return KERN_SUCCESS;
} else if (flavor == PROCESSOR_SET_TIMESHARE_LIMITS) {
policy_timeshare_limit_t ts_limit;
if (*count < POLICY_TIMESHARE_LIMIT_COUNT) {
return KERN_FAILURE;
}
ts_limit = (policy_timeshare_limit_t) info;
ts_limit->max_priority = MAXPRI_KERNEL;
*count = POLICY_TIMESHARE_LIMIT_COUNT;
*host = &realhost;
return KERN_SUCCESS;
} else if (flavor == PROCESSOR_SET_FIFO_LIMITS) {
policy_fifo_limit_t fifo_limit;
if (*count < POLICY_FIFO_LIMIT_COUNT) {
return KERN_FAILURE;
}
fifo_limit = (policy_fifo_limit_t) info;
fifo_limit->max_priority = MAXPRI_KERNEL;
*count = POLICY_FIFO_LIMIT_COUNT;
*host = &realhost;
return KERN_SUCCESS;
} else if (flavor == PROCESSOR_SET_RR_LIMITS) {
policy_rr_limit_t rr_limit;
if (*count < POLICY_RR_LIMIT_COUNT) {
return KERN_FAILURE;
}
rr_limit = (policy_rr_limit_t) info;
rr_limit->max_priority = MAXPRI_KERNEL;
*count = POLICY_RR_LIMIT_COUNT;
*host = &realhost;
return KERN_SUCCESS;
} else if (flavor == PROCESSOR_SET_ENABLED_POLICIES) {
int *enabled;
if (*count < (sizeof(*enabled) / sizeof(int))) {
return KERN_FAILURE;
}
enabled = (int *) info;
*enabled = POLICY_TIMESHARE | POLICY_RR | POLICY_FIFO;
*count = sizeof(*enabled) / sizeof(int);
*host = &realhost;
return KERN_SUCCESS;
}
*host = HOST_NULL;
return KERN_INVALID_ARGUMENT;
}
kern_return_t
processor_set_statistics(
processor_set_t pset,
int flavor,
processor_set_info_t info,
mach_msg_type_number_t *count)
{
if (pset == PROCESSOR_SET_NULL || pset != &pset0) {
return KERN_INVALID_PROCESSOR_SET;
}
if (flavor == PROCESSOR_SET_LOAD_INFO) {
processor_set_load_info_t load_info;
if (*count < PROCESSOR_SET_LOAD_INFO_COUNT) {
return KERN_FAILURE;
}
load_info = (processor_set_load_info_t) info;
load_info->mach_factor = sched_mach_factor;
load_info->load_average = sched_load_average;
load_info->task_count = tasks_count;
load_info->thread_count = threads_count;
*count = PROCESSOR_SET_LOAD_INFO_COUNT;
return KERN_SUCCESS;
}
return KERN_INVALID_ARGUMENT;
}
kern_return_t
processor_set_max_priority(
__unused processor_set_t pset,
__unused int max_priority,
__unused boolean_t change_threads)
{
return KERN_INVALID_ARGUMENT;
}
kern_return_t
processor_set_policy_enable(
__unused processor_set_t pset,
__unused int policy)
{
return KERN_INVALID_ARGUMENT;
}
kern_return_t
processor_set_policy_disable(
__unused processor_set_t pset,
__unused int policy,
__unused boolean_t change_threads)
{
return KERN_INVALID_ARGUMENT;
}
kern_return_t
processor_set_things(
processor_set_t pset,
void **thing_list,
mach_msg_type_number_t *count,
int type)
{
unsigned int i;
task_t task;
thread_t thread;
task_t *task_list;
unsigned int actual_tasks;
vm_size_t task_size, task_size_needed;
thread_t *thread_list;
unsigned int actual_threads;
vm_size_t thread_size, thread_size_needed;
void *addr, *newaddr;
vm_size_t size, size_needed;
if (pset == PROCESSOR_SET_NULL || pset != &pset0) {
return KERN_INVALID_ARGUMENT;
}
task_size = 0;
task_size_needed = 0;
task_list = NULL;
actual_tasks = 0;
thread_size = 0;
thread_size_needed = 0;
thread_list = NULL;
actual_threads = 0;
for (;;) {
lck_mtx_lock(&tasks_threads_lock);
if (type == PSET_THING_THREAD) {
thread_size_needed = threads_count * sizeof(void *);
}
#if !CONFIG_MACF
else
#endif
task_size_needed = tasks_count * sizeof(void *);
if (task_size_needed <= task_size &&
thread_size_needed <= thread_size) {
break;
}
lck_mtx_unlock(&tasks_threads_lock);
if (task_size_needed > task_size) {
if (task_size != 0) {
kfree(task_list, task_size);
}
assert(task_size_needed > 0);
task_size = task_size_needed;
task_list = (task_t *)kalloc(task_size);
if (task_list == NULL) {
if (thread_size != 0) {
kfree(thread_list, thread_size);
}
return KERN_RESOURCE_SHORTAGE;
}
}
if (thread_size_needed > thread_size) {
if (thread_size != 0) {
kfree(thread_list, thread_size);
}
assert(thread_size_needed > 0);
thread_size = thread_size_needed;
thread_list = (thread_t *)kalloc(thread_size);
if (thread_list == 0) {
if (task_size != 0) {
kfree(task_list, task_size);
}
return KERN_RESOURCE_SHORTAGE;
}
}
}
if (type == PSET_THING_THREAD) {
for (thread = (thread_t)queue_first(&threads);
!queue_end(&threads, (queue_entry_t)thread);
thread = (thread_t)queue_next(&thread->threads)) {
#if defined(SECURE_KERNEL)
if (thread->task != kernel_task) {
#endif
thread_reference_internal(thread);
thread_list[actual_threads++] = thread;
#if defined(SECURE_KERNEL)
}
#endif
}
}
#if !CONFIG_MACF
else {
#endif
for (task = (task_t)queue_first(&tasks);
!queue_end(&tasks, (queue_entry_t)task);
task = (task_t)queue_next(&task->tasks)) {
#if defined(SECURE_KERNEL)
if (task != kernel_task) {
#endif
task_reference_internal(task);
task_list[actual_tasks++] = task;
#if defined(SECURE_KERNEL)
}
#endif
}
#if !CONFIG_MACF
}
#endif
lck_mtx_unlock(&tasks_threads_lock);
#if CONFIG_MACF
unsigned int j, used;
for (i = used = 0; i < actual_tasks; i++) {
if (mac_task_check_expose_task(task_list[i])) {
task_deallocate(task_list[i]);
continue;
}
task_list[used++] = task_list[i];
}
actual_tasks = used;
task_size_needed = actual_tasks * sizeof(void *);
if (type == PSET_THING_THREAD) {
for (i = used = 0; i < actual_threads; i++) {
boolean_t found_task = FALSE;
task = thread_list[i]->task;
for (j = 0; j < actual_tasks; j++) {
if (task_list[j] == task) {
found_task = TRUE;
break;
}
}
if (found_task) {
thread_list[used++] = thread_list[i];
} else {
thread_deallocate(thread_list[i]);
}
}
actual_threads = used;
thread_size_needed = actual_threads * sizeof(void *);
for (i = 0; i < actual_tasks; i++) {
task_deallocate(task_list[i]);
}
kfree(task_list, task_size);
task_size = 0;
actual_tasks = 0;
task_list = NULL;
}
#endif
if (type == PSET_THING_THREAD) {
if (actual_threads == 0) {
assert(task_size == 0);
if (thread_size != 0) {
kfree(thread_list, thread_size);
}
*thing_list = NULL;
*count = 0;
return KERN_SUCCESS;
}
size_needed = actual_threads * sizeof(void *);
size = thread_size;
addr = thread_list;
} else {
if (actual_tasks == 0) {
assert(thread_size == 0);
if (task_size != 0) {
kfree(task_list, task_size);
}
*thing_list = NULL;
*count = 0;
return KERN_SUCCESS;
}
size_needed = actual_tasks * sizeof(void *);
size = task_size;
addr = task_list;
}
if (size_needed < size) {
newaddr = kalloc(size_needed);
if (newaddr == 0) {
for (i = 0; i < actual_tasks; i++) {
if (type == PSET_THING_THREAD) {
thread_deallocate(thread_list[i]);
} else {
task_deallocate(task_list[i]);
}
}
if (size) {
kfree(addr, size);
}
return KERN_RESOURCE_SHORTAGE;
}
bcopy((void *) addr, (void *) newaddr, size_needed);
kfree(addr, size);
addr = newaddr;
size = size_needed;
}
*thing_list = (void **)addr;
*count = (unsigned int)size / sizeof(void *);
return KERN_SUCCESS;
}
kern_return_t
processor_set_tasks(
processor_set_t pset,
task_array_t *task_list,
mach_msg_type_number_t *count)
{
kern_return_t ret;
mach_msg_type_number_t i;
ret = processor_set_things(pset, (void **)task_list, count, PSET_THING_TASK);
if (ret != KERN_SUCCESS) {
return ret;
}
for (i = 0; i < *count; i++) {
(*task_list)[i] = (task_t)convert_task_to_port((*task_list)[i]);
}
return KERN_SUCCESS;
}
#if defined(SECURE_KERNEL)
kern_return_t
processor_set_threads(
__unused processor_set_t pset,
__unused thread_array_t *thread_list,
__unused mach_msg_type_number_t *count)
{
return KERN_FAILURE;
}
#elif defined(CONFIG_EMBEDDED)
kern_return_t
processor_set_threads(
__unused processor_set_t pset,
__unused thread_array_t *thread_list,
__unused mach_msg_type_number_t *count)
{
return KERN_NOT_SUPPORTED;
}
#else
kern_return_t
processor_set_threads(
processor_set_t pset,
thread_array_t *thread_list,
mach_msg_type_number_t *count)
{
kern_return_t ret;
mach_msg_type_number_t i;
ret = processor_set_things(pset, (void **)thread_list, count, PSET_THING_THREAD);
if (ret != KERN_SUCCESS) {
return ret;
}
for (i = 0; i < *count; i++) {
(*thread_list)[i] = (thread_t)convert_thread_to_port((*thread_list)[i]);
}
return KERN_SUCCESS;
}
#endif
kern_return_t
processor_set_policy_control(
__unused processor_set_t pset,
__unused int flavor,
__unused processor_set_info_t policy_info,
__unused mach_msg_type_number_t count,
__unused boolean_t change)
{
return KERN_INVALID_ARGUMENT;
}
#undef pset_deallocate
void pset_deallocate(processor_set_t pset);
void
pset_deallocate(
__unused processor_set_t pset)
{
return;
}
#undef pset_reference
void pset_reference(processor_set_t pset);
void
pset_reference(
__unused processor_set_t pset)
{
return;
}
#if CONFIG_SCHED_CLUTCH
pset_cluster_type_t
recommended_pset_type(thread_t thread)
{
(void)thread;
return PSET_SMP;
}
#else
pset_cluster_type_t
recommended_pset_type(thread_t thread)
{
(void)thread;
return PSET_SMP;
}
#endif