From: Sourabh Jain <sourabhjain@linux.ibm.com>
To: linuxppc-dev@ozlabs.org, mpe@ellerman.id.au
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
Subject: [PATCH v8 2/8] powerpc/crash hp: introduce a new config option CRASH_HOTPLUG
Date: Wed, 1 Feb 2023 12:08:35 +0530 [thread overview]
Message-ID: <20230201063841.965316-3-sourabhjain@linux.ibm.com> (raw)
In-Reply-To: <20230201063841.965316-1-sourabhjain@linux.ibm.com>
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 <sourabhjain@linux.ibm.com>
---
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)
--
2.39.1
next prev parent reply other threads:[~2023-02-01 6:40 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-01 6:38 [PATCH v8 0/8] In kernel handling of CPU hotplug events for crash kernel Sourabh Jain
2023-02-01 6:38 ` [PATCH v8 1/8] powerpc/kexec: turn some static helper functions public Sourabh Jain
2023-02-01 6:38 ` Sourabh Jain [this message]
2023-02-01 6:38 ` [PATCH v8 3/8] powerpc/crash: update kimage_arch struct Sourabh Jain
2023-02-01 6:38 ` [PATCH v8 4/8] crash: add phdr for possible CPUs in elfcorehdr Sourabh Jain
2023-02-02 15:37 ` Eric DeVolder
2023-02-02 21:01 ` Eric DeVolder
2023-02-06 6:36 ` Sourabh Jain
2023-02-06 5:52 ` Sourabh Jain
2023-02-06 5:56 ` Sourabh Jain
2023-02-01 6:38 ` [PATCH v8 5/8] crash: pass hotplug action type to arch crash hotplug handler Sourabh Jain
2023-02-01 6:38 ` [PATCH v8 6/8] powerpc/crash: add crash CPU hotplug support Sourabh Jain
2023-02-01 6:38 ` [PATCH v8 7/8] crash: forward memory_notify args to arch crash hotplug handler Sourabh Jain
2023-02-01 6:38 ` [PATCH v8 8/8] powerpc/kexec: add crash memory hotplug support Sourabh Jain
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