From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C43F0C2D0C6 for ; Wed, 11 Dec 2019 16:09:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A2F5920836 for ; Wed, 11 Dec 2019 16:09:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388957AbfLKQJb (ORCPT ); Wed, 11 Dec 2019 11:09:31 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:51084 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388444AbfLKQJ2 (ORCPT ); Wed, 11 Dec 2019 11:09:28 -0500 Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id xBBG7f0a064751 for ; Wed, 11 Dec 2019 11:09:26 -0500 Received: from e06smtp01.uk.ibm.com (e06smtp01.uk.ibm.com [195.75.94.97]) by mx0a-001b2d01.pphosted.com with ESMTP id 2wtfbxm554-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Wed, 11 Dec 2019 11:09:25 -0500 Received: from localhost by e06smtp01.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 11 Dec 2019 16:09:22 -0000 Received: from b06cxnps4075.portsmouth.uk.ibm.com (9.149.109.197) by e06smtp01.uk.ibm.com (192.168.101.131) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Wed, 11 Dec 2019 16:09:18 -0000 Received: from b06wcsmtp001.portsmouth.uk.ibm.com (b06wcsmtp001.portsmouth.uk.ibm.com [9.149.105.160]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id xBBG9GQ735389666 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 11 Dec 2019 16:09:16 GMT Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 69801A405F; Wed, 11 Dec 2019 16:09:16 +0000 (GMT) Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 5C95FA4054; Wed, 11 Dec 2019 16:09:14 +0000 (GMT) Received: from localhost.localdomain.com (unknown [9.85.74.172]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with ESMTP; Wed, 11 Dec 2019 16:09:14 +0000 (GMT) From: Sourabh Jain To: mpe@ellerman.id.au Cc: mahesh@linux.vnet.ibm.com, hbathini@linux.ibm.com, linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org, corbet@lwn.net, linux-doc@vger.kernel.org, gregkh@linuxfoundation.org, Sourabh Jain Subject: [PATCH v6 0/6] reorganize and add FADump sysfs files Date: Wed, 11 Dec 2019 21:39:04 +0530 X-Mailer: git-send-email 2.17.2 X-TM-AS-GCONF: 00 x-cbid: 19121116-4275-0000-0000-0000038E019B X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19121116-4276-0000-0000-000038A1B827 Message-Id: <20191211160910.21656-1-sourabhjain@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95,18.0.572 definitions=2019-12-11_04:2019-12-11,2019-12-11 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 spamscore=0 mlxlogscore=999 malwarescore=0 phishscore=0 priorityscore=1501 bulkscore=0 adultscore=0 mlxscore=0 lowpriorityscore=0 clxscore=1015 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1912110136 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Currently, FADump sysfs files are present inside /sys/kernel directory. But as the number of FADump sysfs file increases it is not a good idea to push all of them in /sys/kernel directory. It is better to have separate directory to keep all the FADump sysfs files. Patch series reorganizes the FADump sysfs files and avail all the existing FADump sysfs files present inside /sys/kernel into a new directory /sys/kernel/fadump. The backward compatibility is maintained by adding a symlink for every sysfs file that has moved to new location. Also a new FADump sys interface is added to get the amount of memory reserved by FADump for saving the crash dump. Changelog: v1 -> v5: - https://lists.ozlabs.org/pipermail/linuxppc-dev/2019-December/201642.html v5 -> v6 - Unregister FADump if fadump group creation fails. - Remove fadump_enabled symlink if fadump_registered symlink creation fails. - Removed CREATE_SYMLINK macro. Sourabh Jain (6): Documentation/ABI: add ABI documentation for /sys/kernel/fadump_* sysfs: wrap __compat_only_sysfs_link_entry_to_kobj function to change the symlink name powerpc/fadump: reorganize /sys/kernel/fadump_* sysfs files powerpc/powernv: move core and fadump_release_opalcore under new kobject Documentation/ABI: mark /sys/kernel/fadump_* sysfs files deprecated powerpc/fadump: sysfs for fadump memory reservation .../ABI/obsolete/sysfs-kernel-fadump_enabled | 9 ++ .../obsolete/sysfs-kernel-fadump_registered | 10 ++ .../obsolete/sysfs-kernel-fadump_release_mem | 10 ++ .../sysfs-kernel-fadump_release_opalcore | 9 ++ Documentation/ABI/testing/sysfs-kernel-fadump | 40 ++++++ .../powerpc/firmware-assisted-dump.rst | 28 +++- arch/powerpc/kernel/fadump.c | 127 +++++++++++++----- arch/powerpc/platforms/powernv/opal-core.c | 55 +++++--- fs/sysfs/group.c | 28 +++- include/linux/sysfs.h | 12 ++ 10 files changed, 270 insertions(+), 58 deletions(-) create mode 100644 Documentation/ABI/obsolete/sysfs-kernel-fadump_enabled create mode 100644 Documentation/ABI/obsolete/sysfs-kernel-fadump_registered create mode 100644 Documentation/ABI/obsolete/sysfs-kernel-fadump_release_mem create mode 100644 Documentation/ABI/removed/sysfs-kernel-fadump_release_opalcore create mode 100644 Documentation/ABI/testing/sysfs-kernel-fadump -- 2.17.2