Re: [PATCH 1/2] softmmu/cpus: Check if the cpu work list is empty atomically

[Richard Henderson]

On 1/14/22 11:43 AM, Idan Horowitz wrote:
> Instead of taking the lock of the cpu work list in order to check if it's
> empty, we can just read the head pointer atomically. This decreases
> cpu_work_list_empty's share from 5% to 1.3% in a profile of icount-enabled
> aarch64-softmmu.
>
> Signed-off-by: Idan Horowitz<idan.horowitz@gmail.com>
> ---
>   softmmu/cpus.c | 7 +------
>   1 file changed, 1 insertion(+), 6 deletions(-)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

Queued to tcg-next.


r~