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From: Vlad Buslov <vladbu@mellanox.com>
To: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Cc: netdev@vger.kernel.org, davem@davemloft.net, jhs@mojatatu.com,
	xiyou.wangcong@gmail.com, jiri@resnulli.us, pablo@netfilter.org,
	kadlec@blackhole.kfki.hu, fw@strlen.de, ast@kernel.org,
	daniel@iogearbox.net, edumazet@google.com, keescook@chromium.org,
	linux-kernel@vger.kernel.org, netfilter-devel@vger.kernel.org,
	coreteam@netfilter.org, kliteyn@mellanox.com
Subject: Re: [PATCH 02/14] net: sched: change type of reference and bind counters
Date: Sun, 20 May 2018 13:55:59 +0300	[thread overview]
Message-ID: <vbfsh6ma94w.fsf@reg-r-vrt-018-180.mtr.labs.mlnx> (raw)
In-Reply-To: <20180519210442.GA5488@localhost.localdomain>


On Sat 19 May 2018 at 21:04, Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> wrote:
> On Mon, May 14, 2018 at 05:27:03PM +0300, Vlad Buslov wrote:
>> Change type of action reference counter to refcount_t.
>>
>> Change type of action bind counter to atomic_t.
>> This type is used to allow decrementing bind counter without testing
>> for 0 result.
>
> ... and in what does not testing for 0 result helps?
>
>   Marcelo

Atomic operations don't WARN in this case.

  reply	other threads:[~2018-05-20 10:56 UTC|newest]

Thread overview: 86+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-14 14:27 [PATCH 00/14] Modify action API for implementing lockless actions Vlad Buslov
2018-05-14 14:27 ` [PATCH 01/14] net: sched: use rcu for action cookie update Vlad Buslov
2018-05-14 15:10   ` Jiri Pirko
2018-05-14 23:39   ` kbuild test robot
2018-05-14 14:27 ` [PATCH 02/14] net: sched: change type of reference and bind counters Vlad Buslov
2018-05-14 15:11   ` Jiri Pirko
2018-05-19 21:04   ` Marcelo Ricardo Leitner
2018-05-20 10:55     ` Vlad Buslov [this message]
2018-05-14 14:27 ` [PATCH 03/14] net: sched: add 'delete' function to action ops Vlad Buslov
2018-05-14 15:12   ` Jiri Pirko
2018-05-14 16:30     ` Jiri Pirko
2018-05-14 14:27 ` [PATCH 04/14] net: sched: implement unlocked action init API Vlad Buslov
2018-05-14 15:16   ` Jiri Pirko
2018-05-19 21:11     ` Marcelo Ricardo Leitner
2018-05-14 14:27 ` [PATCH 05/14] net: sched: always take reference to action Vlad Buslov
2018-05-14 16:23   ` Jiri Pirko
2018-05-14 18:49     ` Vlad Buslov
2018-05-15  8:58       ` Jiri Pirko
2018-05-15 11:52         ` Vlad Buslov
2018-05-15  1:38   ` kbuild test robot
2018-05-15  1:38   ` [RFC PATCH] net: sched: __tcf_idr_check() can be static kbuild test robot
2018-05-14 14:27 ` [PATCH 06/14] net: sched: implement reference counted action release Vlad Buslov
2018-05-14 16:28   ` Jiri Pirko
2018-05-14 16:47   ` Jiri Pirko
2018-05-14 19:07     ` Vlad Buslov
2018-05-15  9:03       ` Jiri Pirko
2018-05-15  9:16         ` Vlad Buslov
2018-05-19 21:43   ` Marcelo Ricardo Leitner
2018-05-20  6:22     ` Jiri Pirko
2018-05-20 10:59       ` Vlad Buslov
2018-05-14 14:27 ` [PATCH 07/14] net: sched: use reference counting action init Vlad Buslov
2018-05-15 11:24   ` Jiri Pirko
2018-05-15 11:32     ` Vlad Buslov
2018-05-15 11:39       ` Jiri Pirko
2018-05-15 11:41         ` Vlad Buslov
2018-05-15 11:57           ` Jiri Pirko
2018-05-15 12:00             ` Vlad Buslov
2018-05-14 14:27 ` [PATCH 08/14] net: sched: account for temporary action reference Vlad Buslov
2018-05-16  7:12   ` Jiri Pirko
2018-05-14 14:27 ` [PATCH 09/14] net: sched: don't release reference on action overwrite Vlad Buslov
2018-05-16  7:43   ` Jiri Pirko
2018-05-16  7:47     ` Vlad Buslov
2018-05-16  7:50       ` Jiri Pirko
2018-05-19 21:52   ` Marcelo Ricardo Leitner
2018-05-20 18:42     ` Vlad Buslov
2018-05-14 14:27 ` [PATCH 10/14] net: sched: extend act API for lockless actions Vlad Buslov
2018-05-16  7:50   ` Jiri Pirko
2018-05-16  8:16     ` Vlad Buslov
2018-05-16  8:56       ` Jiri Pirko
2018-05-16  9:39         ` Vlad Buslov
2018-05-19 22:17   ` Marcelo Ricardo Leitner
2018-05-14 14:27 ` [PATCH 11/14] net: core: add new/replace rate estimator lock parameter Vlad Buslov
2018-05-16  9:54   ` Jiri Pirko
2018-05-16 10:00     ` Vlad Buslov
2018-05-16 10:11       ` Jiri Pirko
2018-05-14 14:27 ` [PATCH 12/14] net: sched: retry action check-insert on concurrent modification Vlad Buslov
2018-05-16  9:59   ` Jiri Pirko
2018-05-16 11:55     ` Vlad Buslov
2018-05-16 12:26       ` Jiri Pirko
2018-05-16 12:43         ` Vlad Buslov
2018-05-16 13:21           ` Jiri Pirko
2018-05-16 13:52             ` Vlad Buslov
2018-05-16 14:13               ` Jiri Pirko
2018-05-16 14:26                 ` Vlad Buslov
2018-05-16 14:55                   ` Jiri Pirko
2018-05-19 22:35             ` Marcelo Ricardo Leitner
2018-05-14 14:27 ` [PATCH 13/14] net: sched: use unique idr insert function in unlocked actions Vlad Buslov
2018-05-16  9:50   ` Jiri Pirko
2018-05-16  9:54     ` Vlad Buslov
2018-05-19 22:20   ` Marcelo Ricardo Leitner
2018-05-20 21:13     ` Or Gerlitz
2018-05-20 21:33       ` Marcelo Ricardo Leitner
2018-05-20 21:40         ` Or Gerlitz
2018-05-20 22:43           ` Marcelo Ricardo Leitner
2018-05-14 14:27 ` [PATCH 14/14] net: sched: implement delete for all actions Vlad Buslov
2018-05-16  9:48   ` Jiri Pirko
2018-05-16  9:58     ` Vlad Buslov
2018-05-19 22:45       ` Marcelo Ricardo Leitner
2018-05-14 18:03 ` [PATCH 00/14] Modify action API for implementing lockless actions Jamal Hadi Salim
2018-05-14 20:46   ` Vlad Buslov
2018-05-15 18:25     ` Jamal Hadi Salim
2018-05-15 21:21       ` Vlad Buslov
2018-05-15  8:20   ` Jiri Pirko
2018-05-24 23:34 ` Cong Wang
2018-05-25 20:39   ` Vlad Buslov
2018-05-25 21:40     ` Cong Wang

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