From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1031698AbbKECgs (ORCPT ); Wed, 4 Nov 2015 21:36:48 -0500 Received: from mail9.hitachi.co.jp ([133.145.228.44]:42369 "EHLO mail9.hitachi.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030363AbbKECgr (ORCPT ); Wed, 4 Nov 2015 21:36:47 -0500 Subject: [PATCH 0/5] pstore: ramoops: support multiple pmsg instances From: Hiraku Toyooka To: linux-kernel@vger.kernel.org Cc: Tony Luck , Kees Cook , Anton Vorontsov , Mark Salyzyn , Colin Cross , Seiji Aguchi Date: Thu, 05 Nov 2015 11:36:44 +0900 Message-ID: <20151105023644.3367.94795.stgit@arietta> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit 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,... --- 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 | 213 +++++++++++++++----- 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(+), 71 deletions(-) -- Hiraku Toyooka