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The purpose of system event handler is to handle system interrupts. Such interrupts are raised to CPU from system programmable logic devices, upon specific system wide changes, like line card activation and deactivation. The purpose is to create an alternative to trap mechanism, which delivers these events to driver over PCI bus, but not available for the driver working over I2C bus. Mechanism is system dependent and applicable only for the systems equipped with programmable devices with custom logic. Add APIs for event handler registration and un-registration and API which should be invoked from the registered callbacks when system interrupt is raised to CPU. Signed-off-by: Vadim Pasternak <vadimp@nvidia.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.