From: Emeltchenko Andrei <Andrei.Emeltchenko.news@gmail.com>
To: Ulisses Furquim <ulisses@profusion.mobi>
Cc: Marcel Holtmann <marcel@holtmann.org>, linux-bluetooth@vger.kernel.org
Subject: Re: [RFCv3 02/16] Bluetooth: Revert to mutexes from RCU list
Date: Fri, 10 Feb 2012 10:09:43 +0200 [thread overview]
Message-ID: <20120210080941.GA28197@aemeltch-MOBL1> (raw)
In-Reply-To: <CAA37ikYriwfbS9SQKwqnPn+X6z6OoU1AGvqVnqa1vvsUWptmkg@mail.gmail.com>
Hi Ulisses,
On Thu, Feb 09, 2012 at 03:54:44PM -0200, Ulisses Furquim wrote:
> Hi Andrei,
>
> On Thu, Feb 9, 2012 at 12:27 PM, Marcel Holtmann <marcel@holtmann.org> wrote:
> > Hi Andrei,
> >
> >> Usage of RCU list looks not reasonalbe for a number of reasons:
> >> our code sleep and we have to use socket spinlocks, some parts
> >> of code are updaters thus we need to use mutexes anyway.
> >>
> >> Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
> >> ---
> >> net/bluetooth/l2cap_core.c | 108 ++++++++++++++++++++++----------------------
> >> 1 files changed, 54 insertions(+), 54 deletions(-)
> >
> > I am fine with this, but I wanna get an ack from Ulisses as well.
>
> Please, refer to my previous review because it seems you haven't
> changed anything at all. For instance, l2cap_disconnect_rsp() is still
those changes are in other patch:
[RFCv3 09/16] Bluetooth: Use chan lock in L2CAP sig commands
I was thinking that this patch change RCU to mutex chan list locks
and the changes which change socket lock to chan lock are different.
> missing an unlock of chan_lock and I see no changes to l2cap_sock.c
> which are needed. Moreover, you need to use the unlocked versions of
> the chan lookup functions and check if we still need the locked ones.
I will check need for locking function but at least compiler did not warn
me about unused function.
Best regards
Andrei Emeltchenko
next prev parent reply other threads:[~2012-02-10 8:09 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-09 14:17 [RFCv3 00/16] Bluetooth: Change socket lock to l2cap_chan lock Emeltchenko Andrei
2012-02-09 14:17 ` [RFCv3 01/16] Bluetooth: trivial: Fix long line Emeltchenko Andrei
2012-02-09 14:26 ` Marcel Holtmann
2012-02-09 14:17 ` [RFCv3 02/16] Bluetooth: Revert to mutexes from RCU list Emeltchenko Andrei
2012-02-09 14:27 ` Marcel Holtmann
2012-02-09 17:54 ` Ulisses Furquim
2012-02-10 8:09 ` Emeltchenko Andrei [this message]
2012-02-09 18:37 ` Gustavo Padovan
2012-02-09 18:48 ` Ulisses Furquim
2012-02-09 14:17 ` [RFCv3 03/16] Bluetooth: Do not use sk lock in get_chan functions Emeltchenko Andrei
2012-02-09 14:28 ` Marcel Holtmann
2012-02-09 14:40 ` Emeltchenko Andrei
2012-02-09 18:08 ` Gustavo Padovan
2012-02-09 18:33 ` Ulisses Furquim
2012-02-10 8:16 ` Emeltchenko Andrei
2012-02-09 14:17 ` [RFCv3 04/16] Bluetooth: Add l2cap_chan_lock Emeltchenko Andrei
2012-02-09 19:24 ` Gustavo Padovan
2012-02-10 8:39 ` Emeltchenko Andrei
2012-02-09 14:17 ` [RFCv3 05/16] Bluetooth: Add locked and unlocked state_change Emeltchenko Andrei
2012-02-09 14:17 ` [RFCv3 06/16] Bluetooth: Add socket error function Emeltchenko Andrei
2012-02-09 14:30 ` Marcel Holtmann
2012-02-09 18:13 ` Gustavo Padovan
2012-02-10 8:46 ` Emeltchenko Andrei
2012-02-10 12:40 ` Gustavo Padovan
2012-02-09 14:17 ` [RFCv3 07/16] Bluetooth: Add unlocked __l2cap_chan_add function Emeltchenko Andrei
2012-02-09 14:31 ` Marcel Holtmann
2012-02-09 17:54 ` Ulisses Furquim
2012-02-10 8:53 ` Emeltchenko Andrei
2012-02-09 14:17 ` [RFCv3 08/16] Bluetooth: Use chan lock in timers Emeltchenko Andrei
2012-02-09 14:33 ` Marcel Holtmann
2012-02-09 14:17 ` [RFCv3 09/16] Bluetooth: Use chan lock in L2CAP sig commands Emeltchenko Andrei
2012-02-09 14:35 ` Marcel Holtmann
2012-02-09 14:17 ` [RFCv3 10/16] Bluetooth: Use chan lock in chan delete functions Emeltchenko Andrei
2012-02-09 14:36 ` Marcel Holtmann
2012-02-09 14:17 ` [RFCv3 11/16] Bluetooth: Use chan lock in L2CAP conn start Emeltchenko Andrei
2012-02-09 14:37 ` Marcel Holtmann
2012-02-09 14:17 ` [RFCv3 12/16] Bluetooth: Use chan lock in receiving data Emeltchenko Andrei
2012-02-09 14:38 ` Marcel Holtmann
2012-02-09 14:17 ` [RFCv3 13/16] Bluetooth: Change locking logic for conn/chan ready Emeltchenko Andrei
2012-02-09 14:39 ` Marcel Holtmann
2012-02-09 14:17 ` [RFCv3 14/16] Bluetooth: Change locking logic in security_cfm Emeltchenko Andrei
2012-02-09 14:40 ` Marcel Holtmann
2012-02-09 14:17 ` [RFCv3 15/16] Bluetooth: Use l2cap chan lock in socket connect Emeltchenko Andrei
2012-02-09 14:42 ` Marcel Holtmann
2012-02-09 18:25 ` Ulisses Furquim
2012-02-10 9:18 ` Emeltchenko Andrei
2012-02-10 18:31 ` Ulisses Furquim
2012-02-13 8:47 ` Emeltchenko Andrei
2012-02-14 1:12 ` Ulisses Furquim
2012-02-09 14:17 ` [RFCv3 16/16] Bluetooth: Remove socket lock check Emeltchenko Andrei
2012-02-09 14:43 ` Marcel Holtmann
2012-02-09 14:50 ` Emeltchenko Andrei
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