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ea85a20cd5
Lower IOps performance with write operations. Perf tool shows lock contention in dma_pool_alloc and dma_pool_free related to the txrdy_payload_pool. The allocations are for dma buffers for XFER_RDY's, which actually are not needed for the FCP_TRECEIVE command as the command contents are used by the adapter to generate the IU. Remove the allocations and the associated buffer pool. Rather than leaving NULLs in buffer pointer locations, set command and sgl to indicate skipped SGLE indexes. Link: https://lore.kernel.org/r/20191018211832.7917-10-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
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.