mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-05-02 13:23:35 -04:00
5556bacaa5
Denis Salopek says: ==================== This patch series extends the existing bpf_map_lookup_and_delete_elem() functionality with 4 more map types: - BPF_MAP_TYPE_HASH, - BPF_MAP_TYPE_PERCPU_HASH, - BPF_MAP_TYPE_LRU_HASH and - BPF_MAP_TYPE_LRU_PERCPU_HASH. Patch 1 adds most of its functionality and logic as well as documentation. As it was previously limited to only stacks and queues which do not support the BPF_F_LOCK flag, patch 2 enables its usage by adding a new libbpf API bpf_map_lookup_and_delete_elem_flags() based on the existing bpf_map_lookup_elem_flags(). Patch 3 adds selftests for lookup_and_delete_elem(). Changes in patch 1: v7: Minor formating nits, add Acked-by. v6: Remove unneeded flag check, minor code/format fixes. v5: Split patch to 3 patches. Extend BPF_MAP_LOOKUP_AND_DELETE_ELEM documentation with this changes. v4: Fix the return value for unsupported map types. v3: Add bpf_map_lookup_and_delete_elem_flags() and enable BPF_F_LOCK flag, change CHECKs to ASSERT_OKs, initialize variables to 0. v2: Add functionality for LRU/per-CPU, add test_progs tests. Changes in patch 2: v7: No change. v6: Add Acked-by. v5: Move to the newest libbpf version (0.4.0). Changes in patch 3: v7: Remove ASSERT_GE macro which is already added in some other commit, change ASSERT_OK to ASSERT_OK_PTR, add Acked-by. v6: Remove PERCPU macros, add ASSERT_GE macro to test_progs.h, remove leftover code. v5: Use more appropriate macros. Better check for changed value. ==================== Signed-off-by: Andrii Nakryiko <andrii@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 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.