Merge branch 'add-resolve_btfids-support-for-__arena-kfunc-suffix'

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Kumar Kartikeya Dwivedi says:

====================
Add resolve_btfids support for __arena kfunc suffix

Use __arena/__arena__nullable suffixes to emit address_space(1)
annotations on kfunc definitions in vmlinux.h. See commits for details.

Changelog:
----------
v1 -> v2
v1: https://lore.kernel.org/bpf/20260809085155.3305519-1-memxor@gmail.com

 * Avoid enumerating all the ways resolve_btfids can emit the
   "address_space(1)" attribute in its header comment and in kfuncs.rst.
   (Ihor)
 * Drop the kfunc_has_arena_arg() helper: add_arena_tagged_proto()
   returns the original prototype when nothing needs tagging, so it can
   be invoked unconditionally for every kfunc. (Ihor)
 * Add resolve_btfids selftest cases with mixed tagged and untagged
   arguments, and a kfunc that combines the KF_ARENA_RET flag with
   suffixed arena arguments. (Ihor)
====================

Link: https://patch.msgid.link/20260812193842.2879226-1-memxor@gmail.com
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>

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This commit is contained in:

Eduard Zingerman 2026-08-12 18:28:49 -07:00

parent 108d44070e d7842e98ca

commit a88dbe13eb

4 changed files with 99 additions and 38 deletions

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4

Documentation/bpf/kfuncs.rst

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72

tools/bpf/resolve_btfids/main.c

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41

tools/testing/selftests/bpf/prog_tests/resolve_btfids.c

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20

tools/testing/selftests/bpf/progs/btf_data.c

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