From mboxrd@z Thu Jan 1 00:00:00 1970 From: Felipe Balbi Subject: Re: [RFC PATCH 3/4] tty: omap-serial: use threaded interrupt handler Date: Thu, 21 Aug 2014 16:48:40 -0500 Message-ID: <20140821214840.GU11146@saruman.home> 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> Reply-To: Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="OFtM20PmL5gDcvsL" Return-path: Content-Disposition: inline In-Reply-To: <20140821214117.GA7076@ci00147.xsens-tech.local> Sender: linux-serial-owner@vger.kernel.org To: Frans Klaver Cc: Felipe Balbi , Tony Lindgren , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Greg Kroah-Hartman , Alexey Pelykh , Jiri Slaby , Frans Klaver , 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 List-Id: devicetree@vger.kernel.org --OFtM20PmL5gDcvsL Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable 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 16= 00 uart > > > > > rx buffer overflows within 30 seconds. Threading the interrupt ha= ndling reduces > > > > > this to about 170 overflows in 10 minutes. > > > >=20 > > > > Can you try Sebastian Siewior's patches for 8250_omap and 8250 dma > > > > support ? That should help you a lot. > > >=20 > > > I'll have a look at that series. Thanks for pointing it out. >=20 > 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 --=20 balbi --OFtM20PmL5gDcvsL Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJT9mk4AAoJEIaOsuA1yqREHVMP/1Da6QLV+OxT2cDkntSGLpWl +bK8eDxazQMJMru7oH67z1Rc2ABUymwQkAuv5ohi8Qsi5svBQaiF4HsGmlxR39UN C/zp6T5KkVCL1kJPbRVrw7maHJN71Ugm7MRUJF23cgklXjLhcvkmIje8f4oCbYCA 07MQvEEEf8zcqiRXz+6grBi4CVQONxBDcy+61srDNbXqkDekoRmT3ihfFujqw8hM DXlvBb+FI4f2IxwLN5h29PPrwuino1A623PRtbqiDu2nIwEaLwjFw9N60h2+cI22 lgJZXSIAouxy6M99vbOHNJTfvs6bJ+B8tlN/GFwVRUxxzb+8vK5DJ+nIkFnXA3mu mz6CETc8YArlxrTmvXTEx4P67kunGCXtO34FfLJ3H57yKpb4LMo+cHouN12W1RkY U6Bim8ByUwqReN+W5kuZfrRyn24V6lHdq9YNXh564bpIdzZhtm1bSU/9eVNzK5p6 iMBW9xrA/QYJ0f9AUOu3Pw7XoHIC2PLUb0PIhOtw8B+RIydbDUtdrpgSAPSUNtVO WH9PjlaBh1kL3JUV0ZNTjFvmHLKNqOCXZrCplZtCXs2K9QuGyONwRmdXxojcSuG7 i2i8zxd8/g2uuN4/Wfq6T6gXeS/vJAED8/A8SO3uBnmHoTOtZHblG56D/d5Q2apX yOmbT0Vzb5CkLxCtSX2S =XFUR -----END PGP SIGNATURE----- --OFtM20PmL5gDcvsL--