Re: [PATCH V3 2/3] efi: Introduce efi_queue_work() to queue any efi_runtime_service() on efi_rts_wq

[Peter Zijlstra]

On Mon, May 21, 2018 at 08:13:03PM -0700, Sai Praneeth Prakhya wrote:
> +	/*								\
> +	 * queue_work() returns 0 if work was already on queue,         \
> +	 * _ideally_ this should never happen.                          \
> +	 */								\
> +	if (queue_work(efi_rts_wq, &efi_rts_work.work))			\
> +		flush_work(&efi_rts_work.work);				\

Since you're _always_ going to wait for it, it is _much_ cheaper to put
a completion in your actual work and wait for that.