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Wed, 1 Feb 2023 06:38:48 +0000 (GMT) Received: from smtpav04.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 702F72004B; Wed, 1 Feb 2023 06:38:46 +0000 (GMT) Received: from li-4f5ba44c-27d4-11b2-a85c-a08f5b49eada.ibm.com.com (unknown [9.43.109.52]) by smtpav04.fra02v.mail.ibm.com (Postfix) with ESMTP; Wed, 1 Feb 2023 06:38:46 +0000 (GMT) From: Sourabh Jain To: linuxppc-dev@ozlabs.org, mpe@ellerman.id.au Subject: [PATCH v8 2/8] powerpc/crash hp: introduce a new config option CRASH_HOTPLUG Date: Wed, 1 Feb 2023 12:08:35 +0530 Message-Id: <20230201063841.965316-3-sourabhjain@linux.ibm.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230201063841.965316-1-sourabhjain@linux.ibm.com> References: <20230201063841.965316-1-sourabhjain@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: AELjHUX4EhuFHV5SxPFH2scW34GgrbwN X-Proofpoint-ORIG-GUID: atahs6EZRJHil5zkF2O3Og8z-1aZ7BV6 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.930,Hydra:6.0.562,FMLib:17.11.122.1 definitions=2023-02-01_02,2023-01-31_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 impostorscore=0 priorityscore=1501 lowpriorityscore=0 adultscore=0 spamscore=0 mlxscore=0 suspectscore=0 mlxlogscore=999 phishscore=0 clxscore=1015 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2302010056 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: eric.devolder@oracle.com, bhe@redhat.com, mahesh@linux.vnet.ibm.com, kexec@lists.infradead.org, ldufour@linux.ibm.com, hbathini@linux.ibm.com Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" The config option CRASH_HOTPLUG enables in kernel update to kexec segments due to CPU/Memory hotplug events. By default it is disabled. Signed-off-by: Sourabh Jain --- arch/powerpc/Kconfig | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index b8c4ac56bddc5..57d18cc5d27c5 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -668,6 +668,18 @@ config CRASH_DUMP The same kernel binary can be used as production kernel and dump capture kernel. +config CRASH_HOTPLUG + bool "Update crash capture system on CPU/Memory hotplug event" + default n + depends on CRASH_DUMP && (HOTPLUG_CPU || MEMORY_HOTPLUG) + help + In kernel update to relevant kexec segments due to change + in system configuration, rather reloading all the kexec + segments again from userspace by monitoring CPU/Memory + hotplug event in userspace using udev. + + If unsure, say Y. + config FA_DUMP bool "Firmware-assisted dump" depends on PPC64 && (PPC_RTAS || PPC_POWERNV)