From: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
To: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Paolo Abeni <pabeni@redhat.com>,
netdev@vger.kernel.org, Cong Wang <xiyou.wangcong@gmail.com>,
Jiri Pirko <jiri@resnulli.us>,
Daniel Borkmann <daniel@iogearbox.net>,
Eyal Birger <eyal.birger@gmail.com>,
"David S. Miller" <davem@davemloft.net>
Subject: Re: [PATCH net-next v3 3/5] tc/act: remove unneeded RCU lock in action callback
Date: Wed, 25 Jul 2018 15:24:08 -0300 [thread overview]
Message-ID: <20180725182406.GD20383@localhost.localdomain> (raw)
In-Reply-To: <f140db13-471c-4753-82de-8522c635fa13@mojatatu.com>
On Wed, Jul 25, 2018 at 07:59:48AM -0400, Jamal Hadi Salim wrote:
> On 24/07/18 04:06 PM, Paolo Abeni wrote:
> > Each lockless action currently does its own RCU locking in ->act().
> > This is allows using plain RCU accessor, even if the context
> > is really RCU BH.
> >
> > This change drops the per action RCU lock, replace the accessors
> > with _bh variant, cleans up a bit the surronding code and documents
> > the RCU status in the relevant header.
> > No functional nor performance change is intended.
> >
> > The goal of this patch is clarifying that the RCU critical section
> > used by the tc actions extends up to the classifier's caller.
> >
>
> This and 2/5 seems to stand on their own merit.
So does 1/5, I think.
>
> cheers,
> jamal
next prev parent reply other threads:[~2018-07-25 19:37 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-24 20:06 [PATCH net-next v3 0/5] TC: refactor act_mirred packets re-injection Paolo Abeni
2018-07-24 20:06 ` [PATCH net-next v3 1/5] tc/act: user space can't use TC_ACT_REDIRECT directly Paolo Abeni
2018-07-25 11:55 ` Jamal Hadi Salim
2018-07-25 11:56 ` Jiri Pirko
2018-07-25 12:54 ` Paolo Abeni
2018-07-25 13:03 ` Jiri Pirko
2018-07-25 15:48 ` Paolo Abeni
2018-07-25 16:29 ` Paolo Abeni
2018-07-25 16:29 ` Daniel Borkmann
2018-07-26 7:43 ` Jiri Pirko
2018-07-27 2:48 ` Daniel Borkmann
2018-07-24 20:06 ` [PATCH net-next v3 2/5] net/sched: user-space can't set unknown tcfa_action values Paolo Abeni
2018-07-25 12:26 ` Jiri Pirko
2018-07-24 20:06 ` [PATCH net-next v3 3/5] tc/act: remove unneeded RCU lock in action callback Paolo Abeni
2018-07-25 11:59 ` Jamal Hadi Salim
2018-07-25 18:24 ` Marcelo Ricardo Leitner [this message]
2018-07-25 12:32 ` Jiri Pirko
2018-07-24 20:06 ` [PATCH net-next v3 4/5] net/tc: introduce TC_ACT_REINJECT Paolo Abeni
2018-07-24 20:38 ` Cong Wang
2018-07-24 20:50 ` Cong Wang
2018-07-25 8:29 ` Paolo Abeni
2018-07-25 12:27 ` Jamal Hadi Salim
2018-07-25 14:24 ` Paolo Abeni
2018-07-25 15:26 ` Jamal Hadi Salim
2018-07-25 16:48 ` Cong Wang
2018-07-25 17:09 ` Marcelo Ricardo Leitner
2018-07-26 12:52 ` Jamal Hadi Salim
2018-07-26 23:25 ` Cong Wang
2018-07-25 12:16 ` Jamal Hadi Salim
2018-07-25 12:59 ` Jiri Pirko
2018-07-25 13:55 ` Paolo Abeni
2018-07-25 12:57 ` Jiri Pirko
2018-07-24 20:06 ` [PATCH net-next v3 5/5] act_mirred: use TC_ACT_REINJECT when possible Paolo Abeni
2018-07-24 21:15 ` Cong Wang
2018-07-25 10:14 ` Paolo Abeni
2018-07-25 13:30 ` Jiri Pirko
2018-07-25 11:50 ` Jamal Hadi Salim
2018-07-25 13:52 ` Jiri Pirko
2018-07-25 14:04 ` Paolo Abeni
2018-07-25 14:30 ` Jiri Pirko
2018-07-25 11:53 ` [PATCH net-next v3 0/5] TC: refactor act_mirred packets re-injection Jiri Pirko
2018-07-25 12:07 ` Paolo Abeni
2018-07-25 12:17 ` Jiri Pirko
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