From: Felipe Balbi <balbi@ti.com>
To: Frans Klaver <frans.klaver@xsens.com>
Cc: Felipe Balbi <balbi@ti.com>, Tony Lindgren <tony@atomide.com>,
Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Kumar Gala <galak@codeaurora.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Alexey Pelykh <alexey.pelykh@gmail.com>,
Jiri Slaby <jslaby@suse.cz>, Frans Klaver <fransklaver@gmail.com>,
<linux-serial@vger.kernel.org>, <linux-omap@vger.kernel.org>,
<devicetree@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>
Subject: Re: [RFC PATCH 3/4] tty: omap-serial: use threaded interrupt handler
Date: Thu, 21 Aug 2014 16:48:40 -0500 [thread overview]
Message-ID: <20140821214840.GU11146@saruman.home> (raw)
In-Reply-To: <20140821214117.GA7076@ci00147.xsens-tech.local>
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Hi,
On Thu, Aug 21, 2014 at 11:41:17PM +0200, Frans Klaver wrote:
> On Wed, Aug 20, 2014 at 11:06:05AM -0500, Felipe Balbi wrote:
> > On Wed, Aug 20, 2014 at 08:40:28AM +0200, Frans Klaver wrote:
> > > On Tue, Aug 19, 2014 at 01:57:02PM -0500, Felipe Balbi wrote:
> > > > On Tue, Aug 19, 2014 at 02:14:47PM +0200, Frans Klaver wrote:
> > > > > At 3.6Mbaud, with slightly over 2Mbit/s data coming in, we see 1600 uart
> > > > > rx buffer overflows within 30 seconds. Threading the interrupt handling reduces
> > > > > this to about 170 overflows in 10 minutes.
> > > >
> > > > Can you try Sebastian Siewior's patches for 8250_omap and 8250 dma
> > > > support ? That should help you a lot.
> > >
> > > I'll have a look at that series. Thanks for pointing it out.
>
> I have had a look at Sebastian's series, but I'm not convinced
> yet that we should use it. So far the serial console seems to be
> missing data every now and then. I haven't gotten around to testing our
> high traffic application yet.
as any new driver, there are bugs to be fixed. How about reporting the
ones you found together with a way of reproducing them so they can be
fixed ?
cheers
--
balbi
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WARNING: multiple messages have this Message-ID (diff)
From: Felipe Balbi <balbi@ti.com>
To: Frans Klaver <frans.klaver@xsens.com>
Cc: Felipe Balbi <balbi@ti.com>, Tony Lindgren <tony@atomide.com>,
Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Kumar Gala <galak@codeaurora.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Alexey Pelykh <alexey.pelykh@gmail.com>,
Jiri Slaby <jslaby@suse.cz>, Frans Klaver <fransklaver@gmail.com>,
linux-serial@vger.kernel.org, linux-omap@vger.kernel.org,
devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH 3/4] tty: omap-serial: use threaded interrupt handler
Date: Thu, 21 Aug 2014 16:48:40 -0500 [thread overview]
Message-ID: <20140821214840.GU11146@saruman.home> (raw)
In-Reply-To: <20140821214117.GA7076@ci00147.xsens-tech.local>
[-- Attachment #1: Type: text/plain, Size: 1204 bytes --]
Hi,
On Thu, Aug 21, 2014 at 11:41:17PM +0200, Frans Klaver wrote:
> On Wed, Aug 20, 2014 at 11:06:05AM -0500, Felipe Balbi wrote:
> > On Wed, Aug 20, 2014 at 08:40:28AM +0200, Frans Klaver wrote:
> > > On Tue, Aug 19, 2014 at 01:57:02PM -0500, Felipe Balbi wrote:
> > > > On Tue, Aug 19, 2014 at 02:14:47PM +0200, Frans Klaver wrote:
> > > > > At 3.6Mbaud, with slightly over 2Mbit/s data coming in, we see 1600 uart
> > > > > rx buffer overflows within 30 seconds. Threading the interrupt handling reduces
> > > > > this to about 170 overflows in 10 minutes.
> > > >
> > > > Can you try Sebastian Siewior's patches for 8250_omap and 8250 dma
> > > > support ? That should help you a lot.
> > >
> > > I'll have a look at that series. Thanks for pointing it out.
>
> I have had a look at Sebastian's series, but I'm not convinced
> yet that we should use it. So far the serial console seems to be
> missing data every now and then. I haven't gotten around to testing our
> high traffic application yet.
as any new driver, there are bugs to be fixed. How about reporting the
ones you found together with a way of reproducing them so they can be
fixed ?
cheers
--
balbi
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WARNING: multiple messages have this Message-ID (diff)
From: balbi@ti.com (Felipe Balbi)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH 3/4] tty: omap-serial: use threaded interrupt handler
Date: Thu, 21 Aug 2014 16:48:40 -0500 [thread overview]
Message-ID: <20140821214840.GU11146@saruman.home> (raw)
In-Reply-To: <20140821214117.GA7076@ci00147.xsens-tech.local>
Hi,
On Thu, Aug 21, 2014 at 11:41:17PM +0200, Frans Klaver wrote:
> On Wed, Aug 20, 2014 at 11:06:05AM -0500, Felipe Balbi wrote:
> > On Wed, Aug 20, 2014 at 08:40:28AM +0200, Frans Klaver wrote:
> > > On Tue, Aug 19, 2014 at 01:57:02PM -0500, Felipe Balbi wrote:
> > > > On Tue, Aug 19, 2014 at 02:14:47PM +0200, Frans Klaver wrote:
> > > > > At 3.6Mbaud, with slightly over 2Mbit/s data coming in, we see 1600 uart
> > > > > rx buffer overflows within 30 seconds. Threading the interrupt handling reduces
> > > > > this to about 170 overflows in 10 minutes.
> > > >
> > > > Can you try Sebastian Siewior's patches for 8250_omap and 8250 dma
> > > > support ? That should help you a lot.
> > >
> > > I'll have a look at that series. Thanks for pointing it out.
>
> I have had a look at Sebastian's series, but I'm not convinced
> yet that we should use it. So far the serial console seems to be
> missing data every now and then. I haven't gotten around to testing our
> high traffic application yet.
as any new driver, there are bugs to be fixed. How about reporting the
ones you found together with a way of reproducing them so they can be
fixed ?
cheers
--
balbi
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next prev parent reply other threads:[~2014-08-21 21:49 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-29 14:52 [RFC PATCH 0/3] omap-serial high-speed fixes/improvements Frans Klaver
2014-07-29 14:52 ` Frans Klaver
2014-07-29 14:52 ` [PATCH 1/3] tty: omap-serial: prevent division by zero Frans Klaver
2014-07-29 15:00 ` Frans Klaver
2014-07-29 15:00 ` Frans Klaver
2014-07-29 14:52 ` [PATCH 2/3] tty: omap-serial: use threaded interrupt handler Frans Klaver
2014-07-29 14:52 ` [PATCH 3/3] tty: omap-serial: support setting of hardware flow control in dts Frans Klaver
2014-07-29 15:02 ` [RFC PATCH 0/3] omap-serial high-speed fixes/improvements Frans Klaver
2014-07-29 15:02 ` Frans Klaver
2014-07-29 15:02 ` [PATCH 1/3] tty: omap-serial: prevent division by zero Frans Klaver
2014-07-29 15:02 ` Frans Klaver
2014-07-29 15:02 ` [PATCH 2/3] tty: omap-serial: use threaded interrupt handler Frans Klaver
2014-07-29 15:02 ` Frans Klaver
2014-07-29 15:02 ` [PATCH 3/3] tty: omap-serial: support setting of hardware flow control in dts Frans Klaver
2014-07-29 15:02 ` Frans Klaver
2014-08-11 10:09 ` [RFC PATCH 0/3] omap-serial high-speed fixes/improvements Frans Klaver
2014-08-11 10:09 ` Frans Klaver
2014-08-18 13:45 ` Felipe Balbi
2014-08-18 13:45 ` Felipe Balbi
2014-08-18 14:45 ` Frans Klaver
2014-08-18 14:45 ` Frans Klaver
2014-08-19 12:14 ` [RFC PATCHv2 0/4] " Frans Klaver
2014-08-19 12:14 ` Frans Klaver
2014-08-19 12:14 ` Frans Klaver
2014-08-19 12:14 ` [PATCH 1/4] tty: omap-serial: pull out calculation from baud_is_mode16 Frans Klaver
2014-08-19 12:14 ` Frans Klaver
2014-08-19 12:14 ` Frans Klaver
2014-08-19 12:14 ` [PATCH 2/4] tty: omap-serial: prevent division by zero Frans Klaver
2014-08-19 12:14 ` Frans Klaver
2014-08-19 12:14 ` Frans Klaver
2014-08-19 12:14 ` [RFC PATCH 3/4] tty: omap-serial: use threaded interrupt handler Frans Klaver
2014-08-19 12:14 ` Frans Klaver
2014-08-19 12:14 ` Frans Klaver
2014-08-19 18:57 ` Felipe Balbi
2014-08-19 18:57 ` Felipe Balbi
2014-08-19 18:57 ` Felipe Balbi
2014-08-20 6:40 ` Frans Klaver
2014-08-20 6:40 ` Frans Klaver
2014-08-20 6:40 ` Frans Klaver
2014-08-20 16:06 ` Felipe Balbi
2014-08-20 16:06 ` Felipe Balbi
2014-08-20 16:06 ` Felipe Balbi
2014-08-21 21:41 ` Frans Klaver
2014-08-21 21:41 ` Frans Klaver
2014-08-21 21:41 ` Frans Klaver
2014-08-21 21:48 ` Felipe Balbi [this message]
2014-08-21 21:48 ` Felipe Balbi
2014-08-21 21:48 ` Felipe Balbi
2014-08-21 22:07 ` Frans Klaver
2014-08-21 22:07 ` Frans Klaver
2014-08-22 14:02 ` Frans Klaver
2014-08-22 14:02 ` Frans Klaver
2014-08-22 14:02 ` Frans Klaver
2014-08-19 12:14 ` [PATCH 4/4] tty: omap-serial: support setting of hardware flow control in dts Frans Klaver
2014-08-19 12:14 ` Frans Klaver
2014-08-19 12:14 ` Frans Klaver
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