On 2021/3/17 2:41, Cong Wang wrote:
> On Mon, Mar 15, 2021 at 2:29 AM Yunsheng Lin wrote:
>>
>> Currently qdisc_lock(q) is taken before enqueuing and dequeuing
>> for lockless qdisc's skb_bad_txq/gso_skb queue, qdisc->seqlock is
>> also taken, which can provide the same protection as
On 2021/3/17 2:43, Cong Wang wrote:
> On Mon, Mar 15, 2021 at 4:42 PM David Miller wrote:
>>
>> From: Yunsheng Lin
>> Date: Mon, 15 Mar 2021 17:30:10 +0800
>>
>>> Currently qdisc_lock(q) is taken before enqueuing and dequeuing
>>> for lockless qdisc's skb_bad_txq/gso_skb queue, qdisc->seqlock is
On 2021/3/17 5:45, David Miller wrote:
> From: Yunsheng Lin
> Date: Tue, 16 Mar 2021 10:40:56 +0800
>
>> On 2021/3/16 7:41, David Miller wrote:
>>> From: Yunsheng Lin
>>
>> At least for the fast path, taking two locks for lockless qdisc hurts
>> performance when handling requeued skb,
From: Yunsheng Lin
Date: Tue, 16 Mar 2021 10:40:56 +0800
> On 2021/3/16 7:41, David Miller wrote:
>> From: Yunsheng Lin
>
> At least for the fast path, taking two locks for lockless qdisc hurts
> performance when handling requeued skb, especially if the lockless
> qdisc supports
On Mon, Mar 15, 2021 at 4:42 PM David Miller wrote:
>
> From: Yunsheng Lin
> Date: Mon, 15 Mar 2021 17:30:10 +0800
>
> > Currently qdisc_lock(q) is taken before enqueuing and dequeuing
> > for lockless qdisc's skb_bad_txq/gso_skb queue, qdisc->seqlock is
> > also taken, which can provide the
On Mon, Mar 15, 2021 at 2:29 AM Yunsheng Lin wrote:
>
> Currently qdisc_lock(q) is taken before enqueuing and dequeuing
> for lockless qdisc's skb_bad_txq/gso_skb queue, qdisc->seqlock is
> also taken, which can provide the same protection as qdisc_lock(q).
>
> This patch removes the unnecessay
On 2021/3/16 7:41, David Miller wrote:
> From: Yunsheng Lin
> Date: Mon, 15 Mar 2021 17:30:10 +0800
>
>> Currently qdisc_lock(q) is taken before enqueuing and dequeuing
>> for lockless qdisc's skb_bad_txq/gso_skb queue, qdisc->seqlock is
>> also taken, which can provide the same protection as
From: Yunsheng Lin
Date: Mon, 15 Mar 2021 17:30:10 +0800
> Currently qdisc_lock(q) is taken before enqueuing and dequeuing
> for lockless qdisc's skb_bad_txq/gso_skb queue, qdisc->seqlock is
> also taken, which can provide the same protection as qdisc_lock(q).
>
> This patch removes the
Currently qdisc_lock(q) is taken before enqueuing and dequeuing
for lockless qdisc's skb_bad_txq/gso_skb queue, qdisc->seqlock is
also taken, which can provide the same protection as qdisc_lock(q).
This patch removes the unnecessay qdisc_lock(q) protection for
lockless qdisc' skb_bad_txq/gso_skb
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