drm/rockchip: vop: reject vlank control when vop is disabled

[firefly-linux-kernel-4.4.55.git] / kernel / cpu.c

diff --git a/kernel/cpu.c b/kernel/cpu.c
index 85ff5e26e23b45b34201120c758082599f995b7e..9ced7c7516481f05549c48e6b2d3ae1bf5f36f61 100644 (file)
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -24,6 +24,8 @@
 #include <linux/irq.h>
 #include <trace/events/power.h>
 
+#include <trace/events/sched.h>
+
 #include "smpboot.h"
 
 #ifdef CONFIG_SMP
@@ -425,6 +427,7 @@ static int _cpu_down(unsigned int cpu, int tasks_frozen)
 
 out_release:
        cpu_hotplug_done();
+       trace_sched_cpu_hotplug(cpu, err, 0);
        if (!err)
                cpu_notify_nofail(CPU_POST_DEAD | mod, hcpu);
        return err;
@@ -530,6 +533,7 @@ out_notify:
                __cpu_notify(CPU_UP_CANCELED | mod, hcpu, nr_calls, NULL);
 out:
        cpu_hotplug_done();
+       trace_sched_cpu_hotplug(cpu, ret, 1);
 
        return ret;
 }
@@ -623,6 +627,7 @@ void __weak arch_enable_nonboot_cpus_end(void)
 void enable_nonboot_cpus(void)
 {
        int cpu, error;
+       struct device *cpu_device;
 
        /* Allow everyone to use the CPU hotplug again */
        cpu_maps_update_begin();
@@ -640,6 +645,12 @@ void enable_nonboot_cpus(void)
                trace_suspend_resume(TPS("CPU_ON"), cpu, false);
                if (!error) {
                        pr_info("CPU%d is up\n", cpu);
+                       cpu_device = get_cpu_device(cpu);
+                       if (!cpu_device)
+                               pr_err("%s: failed to get cpu%d device\n",
+                                      __func__, cpu);
+                       else
+                               kobject_uevent(&cpu_device->kobj, KOBJ_ONLINE);
                        continue;
                }
                pr_warn("Error taking CPU%d up: %d\n", cpu, error);
@@ -827,3 +838,23 @@ void init_cpu_online(const struct cpumask *src)
 {
        cpumask_copy(to_cpumask(cpu_online_bits), src);
 }
+
+static ATOMIC_NOTIFIER_HEAD(idle_notifier);
+
+void idle_notifier_register(struct notifier_block *n)
+{
+       atomic_notifier_chain_register(&idle_notifier, n);
+}
+EXPORT_SYMBOL_GPL(idle_notifier_register);
+
+void idle_notifier_unregister(struct notifier_block *n)
+{
+       atomic_notifier_chain_unregister(&idle_notifier, n);
+}
+EXPORT_SYMBOL_GPL(idle_notifier_unregister);
+
+void idle_notifier_call_chain(unsigned long val)
+{
+       atomic_notifier_call_chain(&idle_notifier, val, NULL);
+}
+EXPORT_SYMBOL_GPL(idle_notifier_call_chain);