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The device supports two event queues. EQ0 is used for command interface completion events. EQ1 is used for completion events of RDQ or SDQ. Currently, for each EQE (event queue element), we check the queue number and handle accordingly. More than that, for each interrupt we schedule tasklets for both EQs. This is really ineffective, especially because of the fact that EQ0 is used only as part of driver init/fini, when EMADs are not available. There is no point to schedule the tasklet for it and check each EQE. A previous patch changed the code to poll command interface for each use of it. It means that now there is no real reason to use EQ0, as we poll the command interface. Initialize only one event queue and use it as EQ1 (this is determined by queue number). Then, for each interrupt we can schedule the tasklet only for one queue and we do not have to check the queue number. This simplifies the code and should improve performance. Note that polling command interface is ok as we use it only as part of driver init/fini. Signed-off-by: Amit Cohen <amcohen@nvidia.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: Petr Machata <petrm@nvidia.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://lore.kernel.org/r/23d764f5c032e4c363b98590b746a4b32d2bf900.1712062203.git.petrm@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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| ipc | ||
| kernel | ||
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| COPYING | ||
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| Kbuild | ||
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| README | ||
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 reStructuredText 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.