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The enable_and_queue_work() function is introduced to streamline the process of enabling and queuing a work item on a specific workqueue. This function combines the functionalities of enable_work() and queue_work() in a single call, providing a concise and convenient API for enabling and queuing work items. The function accepts a target workqueue and a work item as parameters. It first attempts to enable the work item using enable_work(). A successful enable operation means that the work item was previously disabled and is now marked as eligible for execution. If the enable operation is successful, the work item is then queued on the specified workqueue using queue_work(). The function returns true if the work item was successfully enabled and queued, and false otherwise. Note: This function may lead to unnecessary spurious wake-ups in cases where the work item is expected to be dormant but enable/disable are called frequently. Spurious wake-ups refer to the condition where worker threads are woken up without actual work to be done. Callers should be aware of this behavior and may need to employ additional synchronization mechanisms to avoid these overheads if such wake-ups are not desired. This addition aims to enhance code readability and maintainability by providing a unified interface for the common use case of enabling and queuing work items on a workqueue. tj: Made the function comment more compact. Signed-off-by: Allen Pais <allen.lkml@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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