Hi, This patch series introduces a new framework in the form of a driver probe-control, aimed at addressing the need for deferring the probes from built-in drivers in kernels where modules are not used. In such scenario, delaying the initialization of certain devices such as pcie based devices not needed during boot and giving user the control on probing these devices post boot, can help reduce overall boot time. This is achieved without modifying the driver code, simply by configuring the platform device tree. This patch series includes 2 patches: 1) dt-binding document for the probe-control driver This document explains how device tree of a platform can be configured to use probe-control devices for deferring the probes of certain devices. 2) probe-control driver implementation This provides actual driver implementation along with relevant ABI documentation for the sys interfaces that driver provides to the user: /sys/kernel/probe_control/trigger - For triggering the probes /sys/kernel/debug/probe_control_status - For checking current probe status TODO: * Fix changenotice warning related to MAINTAINERS file update based on community feedback for the patches proposed. Thanks, Nayeem Nayeemahmed Badebade (2): dt-bindings: probe-control: add probe control driver driver: core: add probe control driver .../ABI/testing/debugfs-probe-control | 14 + .../ABI/testing/sysfs-kernel-probe-control | 13 + .../probe-control/linux,probe-controller.yaml | 59 ++++ drivers/base/Makefile | 1 + drivers/base/probe_control.c | 275 ++++++++++++++++++ 5 files changed, 362 insertions(+) create mode 100644 Documentation/ABI/testing/debugfs-probe-control create mode 100644 Documentation/ABI/testing/sysfs-kernel-probe-control create mode 100644 Documentation/devicetree/bindings/probe-control/linux,probe-controller.yaml create mode 100644 drivers/base/probe_control.c base-commit: 47ac09b91befbb6a235ab620c32af719f8208399 -- 2.34.1
