Re: [RFC PATCH] compiler.h: Introduce ptr_eq() to preserve address dependency

[Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx>]

On 2024-09-27 22:33, Mathieu Desnoyers wrote:
[...]

> ---
>   include/linux/compiler.h | 62 ++++++++++++++++++++++++++++++++++++++++
>   1 file changed, 62 insertions(+)

I'm wondering if this really belongs in compiler.h, or if it's so
RCU/HP specific that it should be implemented in rcupdate.h ?

[... ]
> +static __always_inline
> +int ptr_eq(const volatile void *a, const volatile void *b)

And perhaps rename this to rcu_ptr_eq() ?

Thanks,

Mathieu

> +{
> +	OPTIMIZER_HIDE_VAR(a);
> +	OPTIMIZER_HIDE_VAR(b);
> +	return a == b;
> +}
> +



--
Mathieu Desnoyers
EfficiOS Inc.
https://www.efficios.com