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e01cc1e8c2
Provide the generic sync_try_cmpxchg() function from the raw_ prefixed version, also adding explicit instrumentation. The patch amends existing scripts to generate sync_try_cmpxchg() locking primitive and its raw_sync_try_cmpxchg() fallback, while leaving existing macros from the try_cmpxchg() family unchanged. The target can define its own arch_sync_try_cmpxchg() to override the generic version of raw_sync_try_cmpxchg(). This allows the target to generate more optimal assembly than the generic version. Additionally, the patch renames two scripts to better reflect whet they really do. Signed-off-by: Uros Bizjak <ubizjak@gmail.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Will Deacon <will@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: linux-kernel@vger.kernel.org |
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