From: Philipp Zabel <p.zabel@pengutronix.de>
To: Ezequiel Garcia <ezequiel@collabora.com>,
linux-media@vger.kernel.org,
Hans Verkuil <hverkuil-cisco@xs4all.nl>
Cc: kernel@collabora.com
Subject: Re: [PATCH 4/5] media: coda: Remove pic_run_work worker
Date: Fri, 26 Apr 2019 10:11:46 +0200 [thread overview]
Message-ID: <1556266306.3664.5.camel@pengutronix.de> (raw)
In-Reply-To: <20190425183546.16244-5-ezequiel@collabora.com>
On Thu, 2019-04-25 at 15:35 -0300, Ezequiel Garcia wrote:
> There isn't any reason to run the mem2mem job on a separate worker,
> because the mem2mem framework guarantees that device_run will never
> run in interrupt context.
The purpose of the workqueue is to serialize BIT processor commands,
currently the PIC_RUN commands issued by the mem2mem framework (as well
as SEQ_INIT, SET_FRAME_BUF, and ENCODE_HEADER) against the SEQ_END
command issued directly from the STREAMOFF ioctl.
Further, to fully support the stateful decoder API we'll have to move
SEQ_INIT out of the mem2mem device_run as well, since that should be
called on queued OUTPUT buffers before the CAPTURE side is even
streaming.
regards
Philipp
next prev parent reply other threads:[~2019-04-26 8:11 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-25 18:35 [PATCH 0/5] Assorted CODA fixes Ezequiel Garcia
2019-04-25 18:35 ` [PATCH 1/5] media: coda: Print a nicer device registered message Ezequiel Garcia
2019-04-25 18:39 ` Hans Verkuil
2019-04-25 18:35 ` [PATCH 2/5] media: coda: Remove unbalanced and unneeded mutex unlock Ezequiel Garcia
2019-04-26 7:58 ` Philipp Zabel
2019-04-25 18:35 ` [PATCH 3/5] media: coda: Replace the threaded interrupt with a hard interrupt Ezequiel Garcia
2019-04-26 7:59 ` Philipp Zabel
2019-04-26 9:16 ` Philipp Zabel
2019-04-26 17:56 ` Ezequiel Garcia
2019-04-29 9:13 ` Philipp Zabel
2019-04-25 18:35 ` [PATCH 4/5] media: coda: Remove pic_run_work worker Ezequiel Garcia
2019-04-26 8:11 ` Philipp Zabel [this message]
2019-04-26 18:19 ` Ezequiel Garcia
2019-04-29 9:55 ` Philipp Zabel
2019-04-25 18:35 ` [PATCH 5/5] media: coda: Clear the interrupt reason Ezequiel Garcia
2019-04-26 8:12 ` Philipp Zabel
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