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authorHeiko Carstens <hca@linux.ibm.com>2025-01-16 16:24:31 +0100
committerAlexander Gordeev <agordeev@linux.ibm.com>2025-01-26 17:24:07 +0100
commit884f0582b232f521333c8ad1899c977d580dd755 (patch)
tree55ac1a52f8aee4062da102e1ed69f558c8f1dcef /scripts/gdb/linux/utils.py
parentea5ae3a7f0a95cea70bd8afd165c95e19404a216 (diff)
s390/uaccess: Remove INLINE_COPY_FROM_USER and INLINE_COPY_TO_USER
The s390 implementations of raw_copy_from_user() and raw_copy_to_user() are never inlined. However INLINE_COPY_FROM_USER and INLINE_COPY_TO_USER are still set. This leads to the odd situation that only the error handling (memset to zero of the not copied bytes) of copy_from_user() is inlined, while the actual fast path code is out-of-line. This would make sense if raw_copy_from_user() and raw_copy_to_user() were implemented in assembler files, where inlining is not possible. But the current s390 setup does not make any sense. Address this by moving the raw uaccess copy inline assemblies to the uaccess header file, and remove INLINE_COPY_FROM_USER and INLINE_COPY_TO_USER definitions. This way the uaccess code, but now including error handling, is still out-of-line with the common code _copy_from_user() and _copy_to_user() variants, which inline the raw uaccess functions via _inline_copy_from_user() and _inline_copy_to_user(). This reduces the size of the kernel image by ~17kb. (defconfig, gcc 14.2.0) Acked-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Diffstat (limited to 'scripts/gdb/linux/utils.py')
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