Re: [PATCH 2/2] net/mana: fix Rx interrupt enable failing on lock contention

[Stephen Hemminger]

On Mon,  9 Nov 2026 14:02:07 +0000
Orgad Shaneh <org...@gmail.com> wrote:

> static int
> mana_reset_lock(struct mana_priv *priv)
> {
>       while (pthread_mutex_trylock(&priv->reset_ops_lock)) {
>               if (rte_atomic_load_explicit(&priv->dev_state,
>                   rte_memory_order_relaxed) != MANA_DEV_ACTIVE)
>                       return -EBUSY;
>               rte_pause();
>       }

You need to use pthread_yield(), rte_pause only generates a CPU rep nop
which yields to other hyper thread if it is another process need
to cause yield in cpu scheduler. 

> 
>       if (rte_atomic_load_explicit(&priv->dev_state,
>           rte_memory_order_acquire) != MANA_DEV_ACTIVE) {
>               pthread_mutex_unlock(&priv->reset_ops_lock);
>               return -EBUSY;
>       }
>       return 0;
> }