f4af1db48b
This series includes shared code updates for mlx5 core driver for both netdev and rdma subsystems. By Saeed, First six patches of the series are meant to address a performance issue and should provide a performance boost for multi core IRQ interrupt hungry workloads. The issue is fixed in the first patch, all other patches are meant to refactor the code in light of this fix. The problem it comes to fix, is a shared spinlock accessed across all HCA IRQs which protects the CQ database. To solve this we simply move the CQ database and its spinlock to be per EQ (IRQ), thus per core. By Yonatan, Fragmented completion queue (CQ) for RDMA, core driver implementation to create fragmented CQ buffers rather than one large contiguous memory buffer, the implementation scheme already exist and used by the netdev CQs, the patch shares that code with the rdma CQ creation flow and makes use of the new API in mlx5_ib driver. Thanks, Saeed. -----BEGIN PGP SIGNATURE----- iQEcBAABAgAGBQJajcwxAAoJEEg/ir3gV/o+uJAIAICP2LBu5ANBgX7Z7/B0IZX4 Abkfk+IKR44v+3t0BBgEAZI2A9LcTQ8pwIOeLCDpcKd78665Y7rYQL1p31WuPKc5 1WwwBesjQLAmdiNLIjUnjW1fd3YyOmqLBcaMMYIeF0m4m4pCQue1kwtxesQrhdZV I7FBxxnQt/8o6hoh/5nmU4DzGyZaY+uR/4FxUCEreklfhNeI5M2DZKe1xQCmhsJ4 Tosh/cJ8kSBJfclH6hk1lh5eWGDYDltWCpY86KBWsYktl10VAE3P7LPmekn487ta e6cL1NPoEHbp+/UBThkNZMzUnA7wpoNeDbTTtVZrdcL1KivwColt1r3pmS1bqEQ= =DlfW -----END PGP SIGNATURE----- Merge tag 'mlx5-updates-2018-02-21' of git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux Saeed Mahameed says: ==================== mlx5-updates-2018-02-21 This series includes shared code updates for mlx5 core driver for both netdev and rdma subsystems. By Saeed, First six patches of the series are meant to address a performance issue and should provide a performance boost for multi core IRQ interrupt hungry workloads. The issue is fixed in the first patch, all other patches are meant to refactor the code in light of this fix. The problem it comes to fix, is a shared spinlock accessed across all HCA IRQs which protects the CQ database. To solve this we simply move the CQ database and its spinlock to be per EQ (IRQ), thus per core. By Yonatan, Fragmented completion queue (CQ) for RDMA, core driver implementation to create fragmented CQ buffers rather than one large contiguous memory buffer, the implementation scheme already exist and used by the netdev CQs, the patch shares that code with the rdma CQ creation flow and makes use of the new API in mlx5_ib driver. ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
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README
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.