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Rings enabled state change occurs in control path only, and is always followed by a napi_sychronize(), so that following NAPIs read the new value. This read does not need to be atomic. The RQ auto-moderation bit is not set/cleared in data-path. No need for atomic read, a regular read operation is sufficient. In RQ creation time as well, there's no multiple threads trying to access it yet, hence a regular read can be used. Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.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.