libbpf: Avoid inline hint definition from 'linux/stddef.h'

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Linux headers might pull 'linux/stddef.h' which defines
'__always_inline' as the following:

   #ifndef __always_inline
   #define __always_inline inline
   #endif

This becomes an issue if the program picks up the 'linux/stddef.h'
definition as the macro now just hints inline to clang.

This change now enforces the proper definition for BPF programs
regardless of the include order.

Signed-off-by: Pedro Tammela <pctammela@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210314173839.457768-1-pctammela@gmail.com

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Pedro Tammela 2021-03-14 18:38:38 +01:00 • committed by Andrii Nakryiko

parent 6503b9f29a

commit 0205e9de42

1 changed files with 3 additions and 2 deletions

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tools/lib/bpf/bpf_helpers.h

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