Re: [RFC v2 1/7] atomics: Add test for atomic operations with _relaxed variants

From: Will Deacon
Date: Mon Oct 12 2015 - 05:30:44 EST


On Wed, Sep 16, 2015 at 04:49:29PM +0100, Boqun Feng wrote:
> Some atomic operations now have _{relaxed, acquire, release} variants,
> this patch then adds some trivial tests for two purpose:
>
> 1. test the behavior of these new operations in single-CPU
> environment.
> 2. make their code generated before we actually use them somewhere,
> so that we can examine their assembly code.
>
> Signed-off-by: Boqun Feng <boqun.feng@xxxxxxxxx>
> ---
> lib/atomic64_test.c | 91 ++++++++++++++++++++++++++++++++++-------------------
> 1 file changed, 59 insertions(+), 32 deletions(-)

FWIW: this was useful to me whilst developing the arm64 relaxed atomic
implementation. Could you extend it to include the recently queued inc/dec
variants too?

Will
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