tree f2f46e3c8fce9463f661d2771c9388dfd0bdef53
parent 96d330aff7060f0882a5440ddb281cc3ab232d96
author Mark Rutland <mark.rutland@arm.com> 1621951333 +0100
committer Peter Zijlstra <peterz@infradead.org> 1622028050 +0200

locking/atomic: arc: move to ARCH_ATOMIC

We'd like all architectures to convert to ARCH_ATOMIC, as once all
architectures are converted it will be possible to make significant
cleanups to the atomics headers, and this will make it much easier to
generically enable atomic functionality (e.g. debug logic in the
instrumented wrappers).

As a step towards that, this patch migrates alpha to ARCH_ATOMIC. The
arch code provides arch_{atomic,atomic64,xchg,cmpxchg}*(), and common
code wraps these with optional instrumentation to provide the regular
functions.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210525140232.53872-15-mark.rutland@arm.com