unbind newly created worker when manager is unbound. It just prepares, this code is useless until "we unbind/rebind without manager_mutex"
Signed-off-by: Lai Jiangshan <la...@cn.fujitsu.com> --- kernel/workqueue.c | 23 ++++++++++++++++++++++- 1 files changed, 22 insertions(+), 1 deletions(-) diff --git a/kernel/workqueue.c b/kernel/workqueue.c index e9fc065..223d128 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -74,6 +74,8 @@ enum { WORKER_NOT_RUNNING = WORKER_PREP | WORKER_UNBOUND | WORKER_CPU_INTENSIVE, + WORKER_COPY_FLAGS = WORKER_UNBOUND, + NR_WORKER_POOLS = 2, /* # worker pools per gcwq */ BUSY_WORKER_HASH_ORDER = 6, /* 64 pointers */ @@ -1820,6 +1822,25 @@ static void start_worker(struct worker *worker) } /** + * manager_start_worker - start a newly created worker by manager + * @worker: worker to start + * @manager: the manager + * + * Make the gcwq aware of @worker and start it. + * Fix the newly created worker's binding. + * + * CONTEXT: + * spin_lock_irq(gcwq->lock). + */ +static void manager_start_worker(struct worker *worker, struct worker *manager) +{ + start_worker(worker); + + /* copy the flags. also unbind the worker if the manager is unbound */ + worker->flags |= manager->flags & WORKER_COPY_FLAGS; +} + +/** * destroy_worker - destroy a workqueue worker * @worker: worker to be destroyed * @@ -1976,7 +1997,7 @@ restart: if (worker) { del_timer_sync(&pool->mayday_timer); spin_lock_irq(&gcwq->lock); - start_worker(worker); + manager_start_worker(worker, pool->manager); BUG_ON(need_to_create_worker(pool)); return true; } -- 1.7.4.4 -- 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/