Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760801Ab3JPQAo (ORCPT ); Wed, 16 Oct 2013 12:00:44 -0400 Received: from mga02.intel.com ([134.134.136.20]:52002 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756018Ab3JPQAn (ORCPT ); Wed, 16 Oct 2013 12:00:43 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.93,508,1378882800"; d="scan'208";a="420085810" Date: Wed, 16 Oct 2013 20:37:32 +0530 From: Vinod Koul To: Greg KH , "Williams, Dan J" Cc: "Shevchenko, Andriy" , Youquan Song , "Song, Youquan" , "Westerberg, Mika" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH 1/2] dma: Add interface to calculate data transferred Message-ID: <20131016150732.GY2954@intel.com> References: <1381527738-9339-2-git-send-email-youquan.song@intel.com> <20131011133343.GB32689@kroah.com> <20131013152633.GM2954@intel.com> <20131015183142.GA12494@linux-youquan.bj.intel.com> <20131016053857.GV2954@intel.com> <1381912571.29062.135.camel@smile> <20131016075702.GW2954@intel.com> <1381914782.29062.137.camel@smile> <20131016141247.GB17567@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20131016141247.GB17567@kroah.com> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1544 Lines: 37 On Wed, Oct 16, 2013 at 07:12:47AM -0700, Greg KH wrote: > On Wed, Oct 16, 2013 at 09:13:20AM +0000, Shevchenko, Andriy wrote: > > On Wed, 2013-10-16 at 13:27 +0530, Vinod Koul wrote: > > > On Wed, Oct 16, 2013 at 02:06:30PM +0530, Shevchenko, Andriy wrote: > > > > On Wed, 2013-10-16 at 11:08 +0530, Vinod Koul wrote: > > > > [] > > > > > > > Well am going to take it a bit further and ask you why do we need the > > > > > /sys/class/dma? I have never used it for slave work. > > > > > > > > How user (who, f.e., would like to run dmatest) will know names of the > > > > channels provided? > > > Ok dmatest requires this, I overlooked that part > > > > > > > How could we see what channels of certain dma controller are requested / > > > > busy from userspace? > > > But do end user care or need to know about this? > > > > The idea is to have some test cases. So, end user probably doesn't > > really need this. > > So could this just be debugfs files instead? Yes I was thinking on same lines and would agree with you on that. This _really_ doesn't need sysfs unless Dan some async usage dependent on it. While at it we can review the fields and remove the ones which are not required... Dan, let me know if you are okay with it, I will try to get that done over the weekend... -- ~Vinod -- 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/