netdev - Re: [PATCH net 00/15] netpoll: avoid capture effects for NAPI drivers

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Message-ID: <CANn89i+8mngtTLs8gzmEFjreW9ie64MPmZWaUDV+KRR7wgNfMA@mail.gmail.com>
Date:   Mon, 24 Sep 2018 08:30:33 -0700
From:   Eric Dumazet <edumazet@...gle.com>
To:     David Miller <davem@...emloft.net>
Cc:     netdev <netdev@...r.kernel.org>, michael.chan@...adcom.com,
        Ariel Elior <ariel.elior@...ium.com>,
        Eric Dumazet <eric.dumazet@...il.com>,
        Tariq Toukan <tariqt@...lanox.com>,
        Saeed Mahameed <saeedm@...lanox.com>,
        Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
        jakub.kicinski@...ronome.com, songliubraving@...com,
        Jay Vosburgh <j.vosburgh@...il.com>,
        Veaceslav Falico <vfalico@...il.com>,
        Andy Gospodarek <andy@...yhouse.net>
Subject: Re: [PATCH net 00/15] netpoll: avoid capture effects for NAPI drivers

On Sun, Sep 23, 2018 at 10:04 PM David Miller <davem@...emloft.net> wrote:
>
> Series applied, thanks Eric.

Thanks David.

Song, would you please this additional patch ?

diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 3219a2932463096566ce8ff336ecdf699422dd65..2ad45babe621b2c979ad5496b7df4342e4efbaa6
100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -150,13 +150,6 @@ static void poll_one_napi(struct napi_struct *napi)
 {
        int work = 0;

-       /* net_rx_action's ->poll() invocations and our's are
-        * synchronized by this test which is only made while
-        * holding the napi->poll_lock.
-        */
-       if (!test_bit(NAPI_STATE_SCHED, &napi->state))
-               return;
-
        /* If we set this bit but see that it has already been set,
         * that indicates that napi has been disabled and we need
         * to abort this operation