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| Filename | Latest commit message | Latest commit date |
|---|---|---|
8f0504a97e
As cpumap now batch consume xdp_frame's from the ptr_ring, it knows how many SKBs it need to allocate. Thus, lets bulk allocate these SKBs via kmem_cache_alloc_bulk() API, and use the previously introduced function build_skb_around(). Notice that the flag __GFP_ZERO asks the slab/slub allocator to clear the memory for us. This does clear a larger area than needed, but my micro benchmarks on Intel CPUs show that this is slightly faster due to being a cacheline aligned area is cleared for the SKBs. (For SLUB allocator, there is a future optimization potential, because SKBs will with high probability originate from same page. If we can find/identify continuous memory areas then the Intel CPU memset rep stos will have a real performance gain.) Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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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.
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.