A fairly low overhead debug tool that may be useful to anyone developing a device driver that uses managed resources. It allows limited inspection from userspace of managed resources currently allocated to devices. When building the kernel, setting flag DEVRES_DEBUGFS adds debug code that causes a directory to be created in the debugfs file system which will contain a file for each device that uses managed resources. When read, this file returns some basic debug information about all the managed resources currently allocated to that device. It is possible to trivially identify resources such as GPIOs, IRQs and memory allocated using devm_kmalloc() without the use of intrusive debug tools. Rob Jones (1): Managed Devices devres_debugfs file system Documentation/driver-model/devres-debugfs.txt | 140 +++++++++ drivers/base/Kconfig | 18 ++ drivers/base/devres.c | 387 +++++++++++++++++++++++++ 3 files changed, 545 insertions(+) create mode 100644 Documentation/driver-model/devres-debugfs.txt -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
