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uapi: wrap compiler_types.h in an ifdef instead of the implicit strip

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The uAPI stddef header includes compiler_types.h, a kernel-only
header, to make sure that kernel definitions of annotations
like __counted_by() take precedence.

There is a hack in scripts/headers_install.sh which strips includes
of compiler.h and compiler_types.h when installing uAPI headers.
While explicit handling makes sense for compiler.h, which is included
all over the uAPI, compiler_types.h is only included by stddef.h
(within the uAPI, obviously it's included in kernel code a lot).

Remove the stripping from scripts/headers_install.sh and wrap
the include of compiler_types.h in #ifdef __KERNEL__ instead.
This should be equivalent functionally, but is easier to understand
to a casual reader of the code. It also makes it easier to work
with kernel headers directly from under tools/

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250825201828.2370083-1-kuba@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Jakub Kicinski
2025-08-25 13:18:28 -07:00
committed by Andrii Nakryiko
parent 367798a9cf
commit 1f098bc568
1 changed files with 2 additions and 0 deletions
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2
include/uapi/linux/stddef.h
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@@ -2,7 +2,9 @@
#ifndef _LINUX_STDDEF_H
#define _LINUX_STDDEF_H
#ifdef __KERNEL__
#endif
#ifndef __always_inline
#define __always_inline inline