Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751677AbaJPRJH (ORCPT ); Thu, 16 Oct 2014 13:09:07 -0400 Received: from mail-qg0-f50.google.com ([209.85.192.50]:54267 "EHLO mail-qg0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751289AbaJPRJF (ORCPT ); Thu, 16 Oct 2014 13:09:05 -0400 MIME-Version: 1.0 In-Reply-To: <20141016124741.GA3832@kroah.com> References: <20141016124741.GA3832@kroah.com> Date: Thu, 16 Oct 2014 10:09:04 -0700 Message-ID: Subject: Re: [PATCH] staging: android: binder: move to the "real" part of the kernel From: John Stultz To: Greg Kroah-Hartman Cc: lkml , devel@driverdev.osuosl.org, Linux API , Santosh Shilimkar , =?UTF-8?B?QXJ2ZSBIasO4bm5ldsOlZw==?= , Sumit Semwal , Rebecca Schultz Zavin , Christoffer Dall , Anup Patel Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Oct 16, 2014 at 5:47 AM, Greg Kroah-Hartman wrote: > From: Greg Kroah-Hartman > > The Android binder code has been "stable" for many years now. No matter Well, ignoring the ABI break that landed in the last year. :) > what comes in the future, we are going to have to support this API, so > might as well move it to the "real" part of the kernel as there's no > real work that needs to be done to the existing code. > > Signed-off-by: Greg Kroah-Hartman > --- > > This was discussed in the Android miniconf at the Plumbers conference. > If anyone has any objections to this, please let me know, otherwise I'm > queueing this up for 3.19-rc1 So my main concerns/thoughts here are: Who is going to maintain this? Has Arve agreed? Are the Android guys comfortable with the ABI stability rules they'll now face? Currently in the android space no one but libbinder should use the kernel interface. Can we enforce that no one use this interface out-side of android (To ensure its one of those "if the abi breaks and no one notices..." edge cases)? I'm still hopeful that a libbinder over kdbus will eventually pan out. I still see having two core IPC mechanisms (even if the use cases are different in style) as a negative, and I worry this might reduce motivation to unify things at the lower level. Granted, such work can still continue, but the incentives do change. thanks -john -- 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/