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| Filename | Latest commit message | Latest commit date |
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2c4a2f7d82
Since when XDP was introduced, drop counter has been able to be updated much more frequently than before, as XDP_DROP increments the counter. Thus for performance analysis per-queue drop counter would be useful. Also this avoids cache contention and race on updating the counter. It is currently racy because napi handlers read-modify-write it without any locks. There are more counters in dev->stats that are racy, but I left them per-device, because they are rarely updated and does not worth being per-queue counters IMHO. To fix them we need atomic ops or some kind of locks. Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp> Signed-off-by: David S. Miller <davem@davemloft.net> |
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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 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.