fs/btrfs/inode.c: remove unnecessary new_valid_dev() check

[karo-tx-linux.git] / kernel / cpu.c

diff --git a/kernel/cpu.c b/kernel/cpu.c
index 82cf9dff4295eaa82305fe04a43cecb0c8a4c27e..85ff5e26e23b45b34201120c758082599f995b7e 100644 (file)
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -102,19 +102,6 @@ void get_online_cpus(void)
 }
 EXPORT_SYMBOL_GPL(get_online_cpus);
 
-bool try_get_online_cpus(void)
-{
-       if (cpu_hotplug.active_writer == current)
-               return true;
-       if (!mutex_trylock(&cpu_hotplug.lock))
-               return false;
-       cpuhp_lock_acquire_tryread();
-       atomic_inc(&cpu_hotplug.refcount);
-       mutex_unlock(&cpu_hotplug.lock);
-       return true;
-}
-EXPORT_SYMBOL_GPL(try_get_online_cpus);
-
 void put_online_cpus(void)
 {
        int refcount;
@@ -304,8 +291,8 @@ static inline void check_for_tasks(int dead_cpu)
 {
        struct task_struct *g, *p;
 
-       read_lock_irq(&tasklist_lock);
-       do_each_thread(g, p) {
+       read_lock(&tasklist_lock);
+       for_each_process_thread(g, p) {
                if (!p->on_rq)
                        continue;
                /*
@@ -320,8 +307,8 @@ static inline void check_for_tasks(int dead_cpu)
 
                pr_warn("Task %s (pid=%d) is on cpu %d (state=%ld, flags=%x)\n",
                        p->comm, task_pid_nr(p), dead_cpu, p->state, p->flags);
-       } while_each_thread(g, p);
-       read_unlock_irq(&tasklist_lock);
+       }
+       read_unlock(&tasklist_lock);
 }
 
 struct take_cpu_down_param {
@@ -344,7 +331,7 @@ static int take_cpu_down(void *_param)
        /* Give up timekeeping duties */
        tick_handover_do_timer();
        /* Park the stopper thread */
-       kthread_park(current);
+       stop_machine_park((long)param->hcpu);
        return 0;
 }