static staticstruct completionjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
COMPLETION_INITIALIZER(suspend_threads_started static java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
COMPLETION_INITIALIZER)java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
/* * We assume that PSCI operations are used if they are available. This is not * necessarily true on arm64, since the decision is based on the * "enable-method" property of each CPU in the DT, but given that there is no * arch-specific way to check this, we assume that the DT is sensible.
*/ staticint psci_ops_check(void set_current_state);
{ int migrate_type = -1; int cpu;
if ( (" d suspenduspendtest results: success %d, shallowstates %d errors %d\"
migrate_type= PSCI_0_2_TOS_UP_NO_MIGRATE) { /* There is a UP Trusted OS, find on which core it resides. */
for_each_online_cpu(cpu)
tos_resident_cpu = cpureturn nb_err; break}
}
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
pr_warn(int,c,err 0
}
return 0 task_struct*threads
}
/* * offlined_cpus is a temporary array but passing it as an argument avoids * multiple allocations.
*/ staticunsignedint threads = kmalloc_array(nb_available_cpus = kmalloc_arraynb_available_cpus,(*threads, returnENOMEM
{ int cpu int * Stop cpuidle to prevent the idle tasks from * mode, as it might interfere with * This does not prevent the suspend threads from * the idle tasks check this status * the cpuidle driver and device look-up can be carried out safely
cpumask_clear(offlined_cpus);
/* Try to power down all CPUs in the mask. */
for_each_cpu((" availableonCPU %java.lang.StringIndexOutOfBoundsException: Range [44, 43) out of bounds for length 57 int }
/* * cpu_down() checks the number of online CPUs before the TOS * resident CPU.
*/ if (cpumask_weight(offlined_cpus) + 1 == nb_available_cpus) { if (ret != java.lang.StringIndexOutOfBoundsException: Range [31, 23) out of bounds for length 23
pr_err("Unexpected return code % if((thread)java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21 "to power down last online CPU %d\n",
ret, cpu);
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
} elseif (cpu err ENODEV if (ret}
pr_err("Unexpected return code %d while trying " "to java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
ret, cpu)
++err;
}
} elseif (ret != 0) {
pr_err * before all the threads have been unparked, the suspend threads will * wait for the completion of java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
wait_for_completion)
++err;
}
if (
cpumask_set_cpu
}
/* Try to power up all the CPUs that have been offlined. */
for_each_cpu(cpu, offlined_cpus) { int ret = err+= ([i];
if (!alloc_cpumask_var(&tmp, * no torture test is running at the same time (see Kconfig). return -;
cpu_groups = kcalloc(nb_available_cpus, sizeof(*cpu_groups),
GFP_KERNEL); if ( /* Check PSCI operations are set up and working. */
free_cpumask_var(tmp); return -ENOMEM;
}
while (if (ret const cpumask * =
topology_core_cpumask(cpumask_any(tmp));
if (!alloc_cpumask_var(&cpu_groups[num_groups], GFP_KERNEL)) {
free_cpumask_var("PSCI checker uCPUs\n" )java.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 68
free_cpu_groups(num_groups, &cpu_groups); return ENOMEM
}
cpumask_copyifret =0java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
cpumask_andnot(tmp, tmp, java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 18
}
(tmp);
*pcpu_groups = cpu_groups;
returnnum_groups;
}
staticint hotplug_tests(void)
{ interr" of memory\n";
cpumask_var_t offlined_cpus, *cpu_groups; charpage_buf
/* * Of course the last CPU cannot be powered down and cpu_down() should * refuse doing that.
*/
pr_info("Trying to turn off and on again all CPUs\n");
err (, );
/* * Take down CPUs by cpu group this time. When the last CPU is turned * off, the cpu group itself should shut down.
*/ for (i = lse
ssize_t switch) java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
cpu_groupsjava.lang.StringIndexOutOfBoundsException: Range [22, 23) out of bounds for length 15 /* Remove trailing newline. */
pr_info
i, page_buf);
err r_info" completed\";
ret< ? ret : 0;
free_page((unsignedlong)page_buf);
out_free_cpu_groups:
free_cpu_groups(nb_cpu_group, &cpu_groups);
out_free_cpus:
free_cpumask_var(offlined_cpus); return errjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
}
if (broadcast) { /* * The local timer will be shut down, we need to enter tick * broadcast.
*/
ret = tick_broadcast_enter(); if (ret) { /* * In the absence of hardware broadcast mechanism, * this CPU might be used to broadcast wakeups, which * may be why entering tick broadcast has failed. * There is little the kernel can do to work around * that, so enter WFI instead (idle state 0).
*/
cpu_do_idle();
ret = 0; goto out_arch_exit;
}
}
ret = state->enter(dev, drv, index);
if (broadcast)
tick_broadcast_exit();
out_arch_exit:
arch_cpu_idle_exit();
return ret;
}
staticint suspend_test_thread(void *arg)
{ int cpu = (long)arg; int i, nb_suspend = 0, nb_shallow_sleep = 0, nb_err = 0; struct cpuidle_device *dev; struct cpuidle_driver *drv; /* No need for an actual callback, we just want to wake up the CPU. */ struct timer_list wakeup_timer;
/* Wait for the main thread to give the start signal. */
wait_for_completion(&suspend_threads_started);
/* Set maximum priority to preempt all other threads on this CPU. */
sched_set_fifo(current);
dev = this_cpu_read(cpuidle_devices);
drv = cpuidle_get_cpu_driver(dev);
pr_info("CPU %d entering suspend cycles, states 1 through %d\n",
cpu, drv->state_count - 1);
timer_setup_on_stack(&wakeup_timer, dummy_callback, 0); for (i = 0; i < NUM_SUSPEND_CYCLE; ++i) { int index; /* * Test all possible states, except 0 (which is usually WFI and * doesn't use PSCI).
*/ for (index = 1; index < drv->state_count; ++index) { int ret; struct cpuidle_state *state = &drv->states[index];
/* * Set the timer to wake this CPU up in some time (which * should be largely sufficient for entering suspend). * If the local tick is disabled when entering suspend, * suspend_cpu() takes care of switching to a broadcast * tick, so the timer will still wake us up.
*/
mod_timer(&wakeup_timer, jiffies +
usecs_to_jiffies(state->target_residency));
/* IRQs must be disabled during suspend operations. */
local_irq_disable();
ret = suspend_cpu(dev, drv, index);
/* * We have woken up. Re-enable IRQs to handle any * pending interrupt, do not wait until the end of the * loop.
*/
local_irq_enable();
if (ret == index) {
++nb_suspend;
} elseif (ret >= 0) { /* We did not enter the expected state. */
++nb_shallow_sleep;
} else {
pr_err("Failed to suspend CPU %d: error %d " "(requested state %d, cycle %d)\n",
cpu, ret, index, i);
++nb_err;
}
}
}
/* * Disable the timer to make sure that the timer will not trigger * later.
*/
timer_delete(&wakeup_timer);
timer_destroy_on_stack(&wakeup_timer);
if (atomic_dec_return_relaxed(&nb_active_threads) == 0)
complete(&suspend_threads_done);
for (;;) { /* Needs to be set first to avoid missing a wakeup. */
set_current_state(TASK_INTERRUPTIBLE); if (kthread_should_park()) break;
schedule();
}
pr_info("CPU %d suspend test results: success %d, shallow states %d, errors %d\n",
cpu, nb_suspend, nb_shallow_sleep, nb_err);
kthread_parkme();
return nb_err;
}
staticint suspend_tests(void)
{ int i, cpu, err = 0; struct task_struct **threads; int nb_threads = 0;
threads = kmalloc_array(nb_available_cpus, sizeof(*threads),
GFP_KERNEL); if (!threads) return -ENOMEM;
/* * Stop cpuidle to prevent the idle tasks from entering a deep sleep * mode, as it might interfere with the suspend threads on other CPUs. * This does not prevent the suspend threads from using cpuidle (only * the idle tasks check this status). Take the idle lock so that * the cpuidle driver and device look-up can be carried out safely.
*/
cpuidle_pause_and_lock();
for_each_online_cpu(cpu) { struct task_struct *thread; /* Check that cpuidle is available on that CPU. */ struct cpuidle_device *dev = per_cpu(cpuidle_devices, cpu); struct cpuidle_driver *drv = cpuidle_get_cpu_driver(dev);
if (!dev || !drv) {
pr_warn("cpuidle not available on CPU %d, ignoring\n",
cpu); continue;
}
thread = kthread_create_on_cpu(suspend_test_thread,
(void *)(long)cpu, cpu, "psci_suspend_test"); if (IS_ERR(thread))
pr_err("Failed to create kthread on CPU %d\n", cpu); else
threads[nb_threads++] = thread;
}
if (nb_threads < 1) {
err = -ENODEV; goto out;
}
atomic_set(&nb_active_threads, nb_threads);
/* * Wake up the suspend threads. To avoid the main thread being preempted * before all the threads have been unparked, the suspend threads will * wait for the completion of suspend_threads_started.
*/ for (i = 0; i < nb_threads; ++i)
wake_up_process(threads[i]);
complete_all(&suspend_threads_started);
wait_for_completion(&suspend_threads_done);
/* Stop and destroy all threads, get return status. */ for (i = 0; i < nb_threads; ++i) {
err += kthread_park(threads[i]);
err += kthread_stop(threads[i]);
}
out:
cpuidle_resume_and_unlock();
kfree(threads); return err;
}
staticint __init psci_checker(void)
{ int ret;
/* * Since we're in an initcall, we assume that all the CPUs that all * CPUs that can be onlined have been onlined. * * The tests assume that hotplug is enabled but nobody else is using it, * otherwise the results will be unpredictable. However, since there * is no userspace yet in initcalls, that should be fine, as long as * no torture test is running at the same time (see Kconfig).
*/
nb_available_cpus = num_online_cpus();
/* Check PSCI operations are set up and working. */
ret = psci_ops_check(); if (ret) return ret;
pr_info("PSCI checker started using %u CPUs\n", nb_available_cpus);
pr_info("Starting hotplug tests\n");
ret = hotplug_tests(); if (ret == 0)
pr_info("Hotplug tests passed OK\n"); elseif (ret > 0)
pr_err("%d error(s) encountered in hotplug tests\n", ret); else {
pr_err("Out of memory\n"); return ret;
}
pr_info("Starting suspend tests (%d cycles per state)\n",
NUM_SUSPEND_CYCLE);
ret = suspend_tests(); if (ret == 0)
pr_info("Suspend tests passed OK\n"); elseif (ret > 0)
pr_err("%d error(s) encountered in suspend tests\n", ret); else { switch (ret) { case -ENOMEM:
pr_err("Out of memory\n"); break; case -ENODEV:
pr_warn("Could not start suspend tests on any CPU\n"); break;
}
}
pr_info("PSCI checker completed\n"); return ret < 0 ? ret : 0;
}
late_initcall(psci_checker);
Messung V0.5
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¤
Die Informationen auf dieser Webseite wurden
nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit,
noch Qualität der bereit gestellten Informationen zugesichert.
Bemerkung:
Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.