s390/cmpxchg: Provide arch_try_cmpxchg()

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Since gcc 14 flag output operands are supported also for s390.

Provide an arch_try_cmpxchg() implementation so that all existing
try_cmpxchg() variants provide slightly better code, if compiled
with gcc 14 or newer.

Reviewed-by: Juergen Christ <jchrist@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

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Heiko Carstens 2024-11-06 11:03:07 +01:00

parent c8603d6928

commit 0b6de9aec2

2 changed files with 64 additions and 0 deletions

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12

arch/s390/include/asm/asm.h

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52

arch/s390/include/asm/cmpxchg.h

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