From: tglx@linutronix.de (Thomas Gleixner)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH 0/4] USB: HCD/EHCI: giveback of URB in tasklet context
Date: Wed, 12 Jun 2013 09:45:13 +0200 (CEST) [thread overview]
Message-ID: <alpine.LFD.2.02.1306120935320.22970@ionos> (raw)
In-Reply-To: <CACVXFVPRWxjXqyv-L6yU1OLXHFYCbe7cQxGnaFxqbEXwBK=hfQ@mail.gmail.com>
On Wed, 12 Jun 2013, Ming Lei wrote:
> On Wed, Jun 12, 2013 at 3:10 AM, Alan Stern <stern@rowland.harvard.edu> wrote:
> >> Also the tasklet running in CPU0 can handle the work which should
> >> have been done by the same tasket scheduled in CPU1, so we can
> >> avoid busy-waitting in CPU1 which may be introduced by tasklet_schedule()
> >> in CPU1.
> >
> > Or you could have a separate tasklet for each host controller.
>
> Yes, but I will compare tasklet with interrupt threaded handler first.
Yes, please. I read through the thread and I really recommend that you
get rid of the tasklet. tasklets are a complete disaster by design and
we really should make efforts to get rid of the last users instead of
trying to work around their semantical shortcomings.
Thanks,
tglx
next prev parent reply other threads:[~2013-06-12 7:45 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-09 15:18 [RFC PATCH 0/4] USB: HCD/EHCI: giveback of URB in tasklet context Ming Lei
2013-06-09 15:18 ` [RFC PATCH 1/4] USB: HCD: support " Ming Lei
2013-06-09 15:58 ` Alan Stern
2013-06-10 8:12 ` Ming Lei
2013-06-10 8:43 ` Oliver Neukum
2013-06-10 9:23 ` Ming Lei
2013-06-10 9:31 ` Oliver Neukum
2013-06-10 9:51 ` Ming Lei
2013-06-09 15:18 ` [RFC PATCH 2/4] USB: EHCI: don't release ehci->lock if URB giveback " Ming Lei
2013-06-09 16:06 ` Alan Stern
2013-06-10 9:10 ` Ming Lei
2013-06-09 15:18 ` [RFC PATCH 3/4] USB: EHCI: improve interrupt qh unlink Ming Lei
2013-06-09 15:18 ` [RFC PATCH 4/4] USB: EHCI: support running URB giveback in tasklet context Ming Lei
2013-06-09 15:48 ` [RFC PATCH 0/4] USB: HCD/EHCI: giveback of URB " Alan Stern
2013-06-10 6:05 ` Ming Lei
2013-06-10 14:03 ` Alan Stern
2013-06-10 14:12 ` Oliver Neukum
2013-06-10 15:33 ` Alan Stern
2013-06-10 15:37 ` Ming Lei
2013-06-10 17:36 ` Alan Stern
2013-06-10 18:52 ` Steven Rostedt
2013-06-10 20:47 ` Alan Stern
2013-06-10 20:54 ` Steven Rostedt
2013-06-11 8:40 ` Ming Lei
2013-06-10 20:51 ` Alan Stern
2013-06-11 6:19 ` Ming Lei
2013-06-11 5:40 ` Ming Lei
2013-06-11 7:18 ` Oliver Neukum
2013-06-11 8:14 ` Ming Lei
2013-06-11 8:49 ` Oliver Neukum
2013-06-11 9:27 ` Ming Lei
2013-06-11 10:51 ` Oliver Neukum
2013-06-11 11:19 ` Ming Lei
2013-06-11 19:10 ` Alan Stern
2013-06-12 2:43 ` Ming Lei
2013-06-12 6:41 ` Ming Lei
2013-06-12 7:45 ` Thomas Gleixner [this message]
2013-06-13 2:25 ` Ming Lei
2013-06-13 14:54 ` Alan Stern
2013-06-13 18:47 ` Greg Kroah-Hartman
2013-06-13 19:41 ` Alan Stern
2013-06-13 20:08 ` Steven Rostedt
2013-06-13 21:09 ` Alan Stern
2013-06-13 22:24 ` Steven Rostedt
2013-06-13 23:08 ` Alan Stern
2013-06-14 1:27 ` Ming Lei
2013-06-14 0:35 ` Greg Kroah-Hartman
2013-06-14 1:53 ` Ming Lei
2013-06-14 6:05 ` Greg Kroah-Hartman
2013-06-14 10:05 ` Ming Lei
2013-06-14 1:37 ` Ming Lei
2013-06-14 3:24 ` Ming Lei
2013-06-14 14:56 ` Alan Stern
2013-06-14 15:15 ` Ming Lei
2013-06-14 20:23 ` Alan Stern
2013-06-14 21:09 ` Thomas Gleixner
2013-06-15 1:49 ` Ming Lei
2013-06-14 2:03 ` Ming Lei
2013-06-12 14:35 ` Alan Stern
2013-06-12 15:10 ` Oliver Neukum
2013-06-13 3:41 ` Ming Lei
2013-06-13 15:05 ` Alan Stern
2013-06-12 9:11 ` Oliver Neukum
2013-06-12 10:11 ` Ming Lei
2013-06-12 10:19 ` Oliver Neukum
2013-06-12 11:33 ` Ming Lei
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