1. An device, comprising: a system memory of the device; a first processing element, comprising or coupled to the system memory; and a second processing element, coupled to the system memory, and configured to: generate or modify a real-time schedule of one or more real-time tasks, thereby creating a new real-time schedule; and write to a specified location in the system memory, thereby indicating that the new real-time schedule has been created; wherein the first processing element is configured to: monitor for a write to the specified location in the system memory; and execute the one or more real-time tasks in accordance with the new real-time schedule in response to detecting the write to the specified location in the system memory without invoking an interrupt service routine.