From: Mathias Nyman <mathias.nyman@linux.intel.com>
To: Suwan Kim <suwan.kim027@gmail.com>
Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
gregkh@linuxfoundation.org
Subject: Re: [PATCH v2] usb: host: xhci: Support running urb giveback in tasklet context
Date: Wed, 8 May 2019 15:04:33 +0300 [thread overview]
Message-ID: <0529be1d-57d6-18b8-6f62-49f4b3931e1a@linux.intel.com> (raw)
In-Reply-To: <20190507160219.GB2427@localhost.localdomain>
On 7.5.2019 19.02, Suwan Kim wrote:
> On Mon, Apr 01, 2019 at 11:16:11PM +0900, Suwan Kim wrote:
>> Patch "USB: HCD: support giveback of URB in tasklet context"[1]
>> introduced giveback of urb in tasklet context. [1] This patch was
>> applied to ehci but not xhci. [2] This patch significantly reduces
>> the hard irq time of xhci. Especially for uvc driver, the hard irq
>> including the uvc completion function runs quite long but applying
>> this patch reduces the hard irq time of xhci.
>>
>
> I sent this patch a month ago but got no answer.
> Is there any feedback for this?
> Please let me know if there are any faults or it needs more tests.
>
I'll add this to a internal tree first, and let it sit there for a few
weeks, trying to catch possible bugs this change could expose.
-Mathias
next prev parent reply other threads:[~2019-05-08 12:02 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-01 14:16 Suwan Kim
2019-04-01 14:43 ` Alan Stern
2019-04-04 12:18 ` Suwan Kim
2019-04-04 20:54 ` Alan Stern
2019-04-08 14:26 ` Suwan Kim
2019-05-07 16:02 ` Suwan Kim
2019-05-08 12:04 ` Mathias Nyman [this message]
2019-05-08 14:40 ` Suwan Kim
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