Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752857AbdI0NUX (ORCPT ); Wed, 27 Sep 2017 09:20:23 -0400 Received: from mail-wr0-f175.google.com ([209.85.128.175]:47165 "EHLO mail-wr0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751959AbdI0NUV (ORCPT ); Wed, 27 Sep 2017 09:20:21 -0400 X-Google-Smtp-Source: AOwi7QBsk6DIq+5S7S0EctlXw1tRSwvXM3YsWhTycDwfG2t3UjG548cRNbx5U25H2hC7ccWYdHQUJQ== From: Benjamin Gaignard To: labbott@redhat.com, sumit.semwal@linaro.org, gregkh@linuxfoundation.org, arve@android.com, riandrews@android.com, broonie@kernel.org, dan.carpenter@oracle.com Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-api@vger.kernel.org, Benjamin Gaignard Subject: [PATCH v5 0/2] staging: ion: get one device per heap Date: Wed, 27 Sep 2017 15:20:07 +0200 Message-Id: <1506518409-16887-1-git-send-email-benjamin.gaignard@linaro.org> X-Mailer: git-send-email 2.7.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1439 Lines: 38 version 5: - create a configuration flag to keep legacy Ion misc device version 4: - add a configuration flag to switch between legacy Ion misc device and one device per heap version. This change has been suggested after Laura talks at XDC 2017. version 3: - change ion_device_add_heap prototype to return a possible error. version 2: - simplify ioctl check like propose by Dan - make sure that we don't register more than ION_DEV_MAX heaps. Until now all ion heaps are addressing using the same device "/dev/ion". This way of working doesn't allow to give access rights (for example with SElinux rules) per heap. This series propose to have one device "/dev/ionX" per heap. Query heaps informations will be possible on each device node but allocation request will only be possible if heap_mask_id match with device minor number. Using legacy Ion misc device is still by setting ION_LEGACY_DEVICE_API configuration flag. Benjamin Gaignard (2): staging: ion: simplify ioctl args checking function staging: ion: create one device entry per heap drivers/staging/android/TODO | 1 - drivers/staging/android/ion/Kconfig | 7 +++++++ drivers/staging/android/ion/ion-ioctl.c | 29 +++++++++++++++++++++-------- drivers/staging/android/ion/ion.c | 31 ++++++++++++++++++++++++++++++- drivers/staging/android/ion/ion.h | 15 +++++++++++++-- 5 files changed, 71 insertions(+), 12 deletions(-) -- 2.7.4