clang -Wunused-function found one remaining function that was
apparently meant to be removed in a recent code cleanup:
kernel/cpu.c:565:20: warning: unused function 'check_for_tasks'
[-Wunused-function]
Fixes: 530e9b76ae8f ("cpu/hotplug: Remove obsolete cpu hotplug
register/unregister functions")
Signed-off-by: Arnd Bergmann <a...@arndb.de>
---
kernel/cpu.c | 24 ------------------------
1 file changed, 24 deletions(-)
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 7435ffc6163b..d0f5f54aa087 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -562,30 +562,6 @@ void clear_tasks_mm_cpumask(int cpu)
rcu_read_unlock();
}
-static inline void check_for_tasks(int dead_cpu)
-{
- struct task_struct *g, *p;
-
- read_lock(&tasklist_lock);
- for_each_process_thread(g, p) {
- if (!p->on_rq)
- continue;
- /*
- * We do the check with unlocked task_rq(p)->lock.
- * Order the reading to do not warn about a task,
- * which was running on this cpu in the past, and
- * it's just been woken on another cpu.
- */
- rmb();
- if (task_cpu(p) != dead_cpu)
- continue;
-
- 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);
- }
- read_unlock(&tasklist_lock);
-}
-
/* Take this CPU down. */
static int take_cpu_down(void *_param)
{
--
2.9.0
