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um: Add cmpxchg8b_emu and checksum functions to asm-prototypes.h

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[ Upstream commit 674d03f6bd6b0f8327f1a4920ff5893557facfbd ]

With CONFIG_GENDWARFKSYMS, um builds fail due to missing prototypes
in asm/asm-prototypes.h. Add declarations for cmpxchg8b_emu and the
exported checksum functions, including csum_partial_copy_generic as
it's also exported.

Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: linux-kbuild@vger.kernel.org
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202503251216.lE4t9Ikj-lkp@intel.com/
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Link: https://patch.msgid.link/20250326190500.847236-2-samitolvanen@google.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Sami Tolvanen
2025-03-26 19:05:00 +00:00
committed by Greg Kroah-Hartman
parent 462215a2a3
commit 265ca17410
2 changed files with 8 additions and 0 deletions
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5
arch/um/include/asm/asm-prototypes.h
View File

@@ -1 +1,6 @@
#include <asm-generic/asm-prototypes.h>
#include <asm/checksum.h>
#ifdef CONFIG_UML_X86
extern void cmpxchg8b_emu(void);
#endif

3
arch/x86/um/asm/checksum.h
View File

@@ -20,6 +20,9 @@
*/
extern __wsum csum_partial(const void *buff, int len, __wsum sum);
/* Do not call this directly. Declared for export type visibility. */
extern __visible __wsum csum_partial_copy_generic(const void *src, void *dst, int len);
/**
* csum_fold - Fold and invert a 32bit checksum.
* sum: 32bit unfolded sum