Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756187Ab0FHUDv (ORCPT ); Tue, 8 Jun 2010 16:03:51 -0400 Received: from mail-px0-f174.google.com ([209.85.212.174]:37310 "EHLO mail-px0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755896Ab0FHUDt convert rfc822-to-8bit (ORCPT ); Tue, 8 Jun 2010 16:03:49 -0400 MIME-Version: 1.0 X-Originating-IP: [174.31.27.127] In-Reply-To: <20100608132144.GA4775@phenom.dumpdata.com> References: <20100607162817.GA13468@phenom.dumpdata.com> <20100608132144.GA4775@phenom.dumpdata.com> Date: Tue, 8 Jun 2010 13:03:49 -0700 Message-ID: Subject: Re: broadsheetfb and fbcon From: Robert Emanuele To: Konrad Rzeszutek Wilk Cc: linux-kernel@vger.kernel.org, jayakumar.lkml@gmail.com Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1376 Lines: 40 On Tue, Jun 8, 2010 at 6:21 AM, Konrad Rzeszutek Wilk wrote: > On Mon, Jun 07, 2010 at 10:19:27AM -0700, Robert Emanuele wrote: >> There are no module parameters for fbcon or broadsheetfb. >> >> On Mon, Jun 7, 2010 at 9:28 AM, Konrad Rzeszutek Wilk >> >> Are those kind of updates a limit of the broadsheet driver or fbcon? >> > >> > I thought there was an update value on how often it should redraw. Did >> > you do a modinfo on the driver? > > Please do not post your response on top. > > What I was thinking about is the delay variable: > > 1056 static struct fb_deferred_io broadsheetfb_defio = { > 1057 ? ? ? ? .delay ? ? ? ? ?= HZ/4, > 1058 ? ? ? ? .deferred_io ? ?= broadsheetfb_dpy_deferred_io, > 1059 }; > 1060 > > > Try changing that to a higher number and seeing if that fixes your > problem. If so, you and I can work on a patch that sets a parameter > for this. > Increasing the delay value to a larger value (more updates/sec) or a smaller value (fewer updates/sec) in the broadsheet driver does not affect the screen update rate. Does the fbcon used the deferred io handler? Thanks, Rob -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/