netdev - Re: [PATCH net-next] net: allow to call netif_reset_xps_queues() under cpu_read

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Date:   Tue, 07 Aug 2018 13:15:06 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     avagin@...nvz.org
Cc:     netdev@...r.kernel.org, virtualization@...ts.linux-foundation.org,
        avagin@...il.com, amritha.nambiar@...el.com, mst@...hat.com,
        jasowang@...hat.com
Subject: Re: [PATCH net-next] net: allow to call netif_reset_xps_queues()
 under cpu_read_lock

From: Andrei Vagin <avagin@...nvz.org>
Date: Mon,  6 Aug 2018 21:14:54 -0700

> This patch adds an ability to call __netif_set_xps_queue under
> cpu_read_lock().

Please don't add conditional locking using a boolean argument.

Simply wrap calls to __netif_set_xps_queue() with cpu read
lock held by the caller or similar.