Re: [PATCH bpf-next v1 07/22] rqspinlock: Add support for timeouts

[Peter Zijlstra]

On Tue, Jan 07, 2025 at 05:59:49AM -0800, Kumar Kartikeya Dwivedi wrote:
> +struct rqspinlock_timeout {
> +	u64 timeout_end;
> +	u64 duration;
> +	u16 spin;
> +};

> +#define RES_CHECK_TIMEOUT(ts, ret)                    \
> +	({                                            \
> +		if (!((ts).spin++ & 0xffff))          \

Per the above spin is a u16, this mask is pointless.

> +			(ret) = check_timeout(&(ts)); \
> +		(ret);                                \
> +	})