From mboxrd@z Thu Jan 1 00:00:00 1970 From: balbi@ti.com (Felipe Balbi) Date: Thu, 21 Aug 2014 16:48:40 -0500 Subject: [RFC PATCH 3/4] tty: omap-serial: use threaded interrupt handler In-Reply-To: <20140821214117.GA7076@ci00147.xsens-tech.local> References: <1406645577-18620-1-git-send-email-frans.klaver@xsens.com> <1408450488-4083-1-git-send-email-frans.klaver@xsens.com> <1408450488-4083-4-git-send-email-frans.klaver@xsens.com> <20140819185701.GC22003@saruman.home> <20140820064028.GC9319@ci00147.xsens-tech.local> <20140820160604.GH24500@saruman.home> <20140821214117.GA7076@ci00147.xsens-tech.local> Message-ID: <20140821214840.GU11146@saruman.home> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 819 bytes Desc: Digital signature URL: