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71dc371993
The logic for dynamic ITR update is confusing at best as there were odd paths chosen for how to find the rings associated with a given queue based on the vector index and other inconsistencies throughout the code. This patch is an attempt to clean up the logic so that we can more easily understand what is going on. Specifically if there is a Rx or Tx ring that is enabled in dynamic mode on the q_vector it is allowed to override the other side of the interrupt moderation. While it isn't correct all this patch is doing is cleaning up the logic for now so that when we come through and fix it we can more easily identify that this is wrong. The other big change made here is that we replace references to: vsi->rx_rings[q_vector->v_idx]->itr_setting with: q_vector->rx.ring->itr_setting The general idea is we can avoid the long pointer chase since just accessing q_vector->rx.ring is a single pointer access versus having to chase down vsi->rx_rings, and then finding the pointer in the array, and finally chasing down the itr_setting from there. Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Tested-by: Andrew Bowers <andrewx.bowers@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> |
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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.