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MHI spec defines the interrupt moderation timer feature using which the host can limit the number of interrupts being raised for an event ring by the device. This feature allows the host to process multiple event ring elements by a single IRQ from the device, thereby eliminating the need to process IRQ for each element. The INTMODT field in the event context array provides the value to be used for delaying the IRQ generation from device. This value, along with the Block Event Interrupt (BEI) flag of the TRE defines how IRQ is generated to the host. Support for interrupt moderation timer is implemented using delayed workqueue in kernel. And a separate delayed work item is used for each event ring. Link: https://lore.kernel.org/r/20231026045513.12981-1-manivannan.sadhasivam@linaro.org Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.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.