RDMA/nes: Bump the version number of nes driver

[cascardo/linux.git] / kernel / cpu.c

diff --git a/kernel/cpu.c b/kernel/cpu.c
index 14d3258..f560598 100644 (file)
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -280,12 +280,13 @@ static int __ref _cpu_down(unsigned int cpu, int tasks_frozen)
                                __func__, cpu);
                goto out_release;
        }
+       smpboot_park_threads(cpu);
 
        err = __stop_machine(take_cpu_down, &tcd_param, cpumask_of(cpu));
        if (err) {
                /* CPU didn't die: tell everyone.  Can't complain. */
+               smpboot_unpark_threads(cpu);
                cpu_notify_nofail(CPU_DOWN_FAILED | mod, hcpu);
-
                goto out_release;
        }
        BUG_ON(cpu_online(cpu));
@@ -354,6 +355,10 @@ static int __cpuinit _cpu_up(unsigned int cpu, int tasks_frozen)
                goto out;
        }
 
+       ret = smpboot_create_threads(cpu);
+       if (ret)
+               goto out;
+
        ret = __cpu_notify(CPU_UP_PREPARE | mod, hcpu, -1, &nr_calls);
        if (ret) {
                nr_calls--;
@@ -368,6 +373,9 @@ static int __cpuinit _cpu_up(unsigned int cpu, int tasks_frozen)
                goto out_notify;
        BUG_ON(!cpu_online(cpu));
 
+       /* Wake the per cpu threads */
+       smpboot_unpark_threads(cpu);
+
        /* Now call notifier in preparation. */
        cpu_notify(CPU_ONLINE | mod, hcpu);
 
@@ -439,14 +447,6 @@ EXPORT_SYMBOL_GPL(cpu_up);
 #ifdef CONFIG_PM_SLEEP_SMP
 static cpumask_var_t frozen_cpus;
 
-void __weak arch_disable_nonboot_cpus_begin(void)
-{
-}
-
-void __weak arch_disable_nonboot_cpus_end(void)
-{
-}
-
 int disable_nonboot_cpus(void)
 {
        int cpu, first_cpu, error = 0;
@@ -458,7 +458,6 @@ int disable_nonboot_cpus(void)
         * with the userspace trying to use the CPU hotplug at the same time
         */
        cpumask_clear(frozen_cpus);
-       arch_disable_nonboot_cpus_begin();
 
        printk("Disabling non-boot CPUs ...\n");
        for_each_online_cpu(cpu) {
@@ -474,8 +473,6 @@ int disable_nonboot_cpus(void)
                }
        }
 
-       arch_disable_nonboot_cpus_end();
-
        if (!error) {
                BUG_ON(num_online_cpus() > 1);
                /* Make sure the CPUs won't be enabled by someone else */