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The core atomic code has a number of macros where it elaborates architecture primitives into more functions. ARC uses arch_atomic64_cmpxchg() as it's architecture primitive which disable alot of the additional functions. Instead provide arch_cmpxchg64_relaxed() as the primitive and rely on the core macros to create arch_cmpxchg64(). The macros will also provide other functions, for instance, try_cmpxchg64_release(), giving a more complete implementation. Suggested-by: Mark Rutland <mark.rutland@arm.com> Link: https://lore.kernel.org/r/Z0747n5bSep4_1VX@J2N7QTR9R3 Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Vineet Gupta <vgupta@kernel.org> |
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