diff options
Diffstat (limited to 'kernel/kthread.c')
| -rw-r--r-- | kernel/kthread.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/kernel/kthread.c b/kernel/kthread.c index 85fc068f0083..31b072e8d427 100644 --- a/kernel/kthread.c +++ b/kernel/kthread.c @@ -88,13 +88,12 @@ static inline struct kthread *to_kthread(struct task_struct *k) /* * Variant of to_kthread() that doesn't assume @p is a kthread. * - * Per construction; when: + * When "(p->flags & PF_KTHREAD)" is set the task is a kthread and will + * always remain a kthread. For kthreads p->worker_private always + * points to a struct kthread. For tasks that are not kthreads + * p->worker_private is used to point to other things. * - * (p->flags & PF_KTHREAD) && p->worker_private - * - * the task is both a kthread and struct kthread is persistent. However - * PF_KTHREAD on it's own is not, kernel_thread() can exec() (See umh.c and - * begin_new_exec()). + * Return NULL for any task that is not a kthread. */ static inline struct kthread *__to_kthread(struct task_struct *p) { @@ -894,6 +893,7 @@ out: return ret; } +EXPORT_SYMBOL_GPL(kthread_affine_preferred); /* * Re-affine kthreads according to their preferences |