On Mon, Jan 13, 2014 at 4:31 AM, Maarten Lankhorst maarten.lankhorst@canonical.com wrote:
The kernel fence implementation doesn't use event queues, but needs to perform the same wake up. The symbol is not exported, since the fence implementation is not built as a module.
Signed-off-by: Maarten Lankhorst maarten.lankhorst@canonical.com
include/linux/wait.h | 1 + kernel/sched/core.c | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/linux/wait.h b/include/linux/wait.h index eaa00b10abaa..c54e3ef50134 100644 --- a/include/linux/wait.h +++ b/include/linux/wait.h @@ -12,6 +12,7 @@ typedef struct __wait_queue wait_queue_t; typedef int (*wait_queue_func_t)(wait_queue_t *wait, unsigned mode, int flags, void *key); int default_wake_function(wait_queue_t *wait, unsigned mode, int flags, void *key); +int try_to_wake_up(struct task_struct *p, unsigned int state, int wake_flags);
struct __wait_queue { unsigned int flags; diff --git a/kernel/sched/core.c b/kernel/sched/core.c index a88f4a485c5e..f41d317042dd 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -1578,7 +1578,7 @@ static void ttwu_queue(struct task_struct *p, int cpu)
- Return: %true if @p was woken up, %false if it was already running.
- or @state didn't match @p's state.
*/ -static int +int try_to_wake_up(struct task_struct *p, unsigned int state, int wake_flags) { unsigned long flags;
wake_up_state is already available in linux/sched.h, can you use that?