Hi, The kthread park/unpark facility is not used in the kernel, so one would assume that it's made for kernel modules. This patch should definitely help most modules. Patch untested, at your own risks... Regards,
Jean Signed-off-by: Jean Tourrilhes <j...@hpl.hp.com> diff -u -p linux-3.18.17/kernel/kthread.j2.c linux-3.18.17/kernel/kthread.c --- linux-3.18.17/kernel/kthread.j2.c 2015-07-08 17:01:39.010554169 -0700 +++ linux-3.18.17/kernel/kthread.c 2015-07-08 17:09:13.016096189 -0700 @@ -97,6 +97,7 @@ bool kthread_should_park(void) { return test_bit(KTHREAD_SHOULD_PARK, &to_kthread(current)->flags); } +EXPORT_SYMBOL(kthread_should_park); /** * kthread_freezable_should_stop - should this freezable kthread return now? @@ -171,6 +172,7 @@ void kthread_parkme(void) { __kthread_parkme(to_kthread(current)); } +EXPORT_SYMBOL(kthread_parkme); static int kthread(void *_create) { @@ -411,6 +413,7 @@ void kthread_unpark(struct task_struct * if (kthread) __kthread_unpark(k, kthread); } +EXPORT_SYMBOL(kthread_unpark); /** * kthread_park - park a thread created by kthread_create(). @@ -441,6 +444,7 @@ int kthread_park(struct task_struct *k) } return ret; } +EXPORT_SYMBOL(kthread_park); /** * kthread_stop - stop a thread created by kthread_create(). -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/