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dfc4ff6446
We recently refactored i40e_do_reset() and its friends to be able to hold the RTNL lock only for the portions that actually need to be protected. However, a separate refactoring added several new callers of these functions during the PCIe error recovery and suspend/resume cycles. When merging the changes together, it was not noticed that we could reduce the RTNL scope by letting the reset function handle the lock itself, as previously it was not possible. Fix this by replacing these call sites to indicate that the reset function should handle its own lock. This enables multiple PFs to reset or resume simultaneously without serializing the resets via the RTNL lock. The end result is that on systems with lots of PFs and VFs the resets don't stall waiting for each other to finish. It is probable that we can also do the same for i40e_do_reset_safe, but this author did not research that change carefully enough to be confident. 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> |
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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.