From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752792AbcGYEOH (ORCPT ); Mon, 25 Jul 2016 00:14:07 -0400 Received: from mailx.hitachi.co.jp ([133.145.228.49]:56133 "EHLO mailx.hitachi.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750817AbcGYEN3 (ORCPT ); Mon, 25 Jul 2016 00:13:29 -0400 From: Nobuhiro Iwamatsu To: Anton Vorontsov , Colin Cross , Kees Cook , Tony Luck Cc: linux-kernel@vger.kernel.org, Nobuhiro Iwamatsu Subject: [PATCH v2 0/5] pstore: ramoops: support multiple pmsg instances Date: Mon, 25 Jul 2016 12:56:54 +0900 Message-Id: <1469419019-4820-1-git-send-email-nobuhiro.iwamatsu.kw@hitachi.com> X-Mailer: git-send-email 2.8.1.windows.1 X-TM-AS-GCONF: 00 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The following series implements multiple pmsg. This feature allows userspace program to control individual content aging or priority. If a pstore backend module(e.g. ramoops) requires the multiple pmsg instances when registering itself to pstore, multiple /dev/pmsg[ID] are created. Writes to each /dev/pmsg[ID] are isolated each other. After reboot, the contents are available in /sys/fs/pstore/pmsg-[backend]-[ID]. In addition, we add multiple pmsg support for ramoops. We can specify multiple pmsg area size by its module parameter as follows. pmsg_size=0x1000,0x2000,... I did check the operation of this feature on CycloneV (socfpga) Helio board. v2: Rebase to v4.7. Fix compile error by ramoops_free_przs function. Hiraku Toyooka (5): ramoops: use persistent_ram_free() instead of kfree() for freeing prz ramoops: introduce generic init/free functions for prz pstore: support multiple pmsg instances ramoops: support multiple pmsg instances selftests/pstore: add testcases for multiple pmsg instances Documentation/ramoops.txt | 22 +++ fs/pstore/pmsg.c | 20 +- fs/pstore/ram.c | 215 ++++++++++++++++----- include/linux/pstore.h | 1 + include/linux/pstore_ram.h | 8 +- tools/testing/selftests/pstore/common_tests | 21 +- .../selftests/pstore/pstore_post_reboot_tests | 27 +-- tools/testing/selftests/pstore/pstore_tests | 16 +- 8 files changed, 257 insertions(+), 73 deletions(-) -- 2.8.1