mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-05-05 20:33:49 -04:00
9bd9f72a74
Add the following netmem counterparts: * virt_to_netmem() -- simple page_to_netmem(virt_to_page()) wrapper; * netmem_is_pfmemalloc() -- page_is_pfmemalloc() for page-backed netmems, false otherwise; and the following "unsafe" versions: * __netmem_to_page() * __netmem_get_pp() * __netmem_address() They do the same as their non-underscored buddies, but assume the netmem is always page-backed. When working with header &page_pools, you don't need to check whether netmem belongs to the host memory and you can never get NULL instead of &page. Checks for the LSB, clearing the LSB, branches take cycles and increase object code size, sometimes significantly. When you're sure your PP is always host, you can avoid this by using the underscored counterparts. Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com> Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://patch.msgid.link/20241203173733.3181246-8-aleksander.lobakin@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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.