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authorMark Rutland <mark.rutland@arm.com>2023-06-05 08:01:10 +0100
committerPeter Zijlstra <peterz@infradead.org>2023-06-05 09:57:18 +0200
commit7c7084f3ba4031a9c2858afed696a577fcfe41d2 (patch)
treed6b4070796a62ab554b54a584755e6e69223910e /tools/perf/scripts/python/export-to-postgresql.py
parent5bef003538ae8621c95ac6ebfd37324373fae37d (diff)
locking/atomic: xtensa: add preprocessor symbols
Some atomics can be implemented in several different ways, e.g. FULL/ACQUIRE/RELEASE ordered atomics can be implemented in terms of RELAXED atomics, and ACQUIRE/RELEASE/RELAXED can be implemented in terms of FULL ordered atomics. Other atomics are optional, and don't exist in some configurations (e.g. not all architectures implement the 128-bit cmpxchg ops). Subsequent patches will require that architectures define a preprocessor symbol for any atomic (or ordering variant) which is optional. This will make the fallback ifdeffery more robust, and simplify future changes. Add the required definitions to arch/xtensa. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20230605070124.3741859-14-mark.rutland@arm.com
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