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The ITR register expects to be programmed in units of 2 microseconds. Because of this, all of the drivers I40E_ITR_* constants are in terms of this 2 microsecond register. Unfortunately, the rx_itr_default value is expected to be programmed in microseconds. Effectively the driver defaults to an ITR value of half the expected value (in terms of minimum microseconds between interrupts). Fix this by changing the default values to be calculated using ITR_REG_TO_USEC macro which indicates that we're converting from the register units into microseconds. Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.