perfetto/ftrace: Introduce device_pm_callback_[start|end] ftrace events This event logs the start and end of device power management (PM) callback invocation and is useful for analyzing system suspend / resume latency in the kernel. Device in this context is any hardware component managed by a Linux kernel driver. Bug: 330333710 Change-Id: Ifd46f940ec82095fd6fa867d0560b0ed79a9750f
Perfetto is a production-grade open-source stack for performance instrumentation and trace analysis. It offers services and libraries and for recording system-level and app-level traces, native + java heap profiling, a library for analyzing traces using SQL and a web-based UI to visualize and explore multi-GB traces.
See https://perfetto.dev/docs or the /docs/ directory for documentation.