Changes in sysfs-kernel-fadump

61c403b5 - Documentation/powerpc/fadump: add additional parameter feature details

Thu, 23 Jan 2025 11:42:54 +0000

Documentation/powerpc/fadump: add additional parameter feature detailsUpdate the fadump document to include details about the fadumpadditional parameter feature.The document includes the following:- Significance of the feature- How to use it- Feature restrictionsNo functional changes are introduced.Signed-off-by: Sourabh Jain Reviewed-by: Mahesh Salgaonkar Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20250123114254.200527-5-sourabhjain@linux.ibm.com List of files: /linux-6.15/Documentation/ABI/testing/sysfs-kernel-fadump

9dc14078 - powerpc/fadump: update documentation about bootargs_append

Fri, 10 May 2024 08:21:14 +0000

powerpc/fadump: update documentation about bootargs_appendUpdate ABI documentation about the introduction of the new sysfsentry bootargs_append. This sysfs entry will be used to setup theadditional parameters to be passed to dump capture kernel.Signed-off-by: Hari Bathini Signed-off-by: Michael Ellerman Link: https://msgid.link/20240510082114.561163-1-hbathini@linux.ibm.com List of files: /linux-6.15/Documentation/ABI/testing/sysfs-kernel-fadump

bc446c5a - powerpc/fadump: add hotplug_ready sysfs interface

Mon, 22 Apr 2024 19:59:31 +0000

powerpc/fadump: add hotplug_ready sysfs interfaceThe elfcorehdr describes the CPUs and memory of the crashed kernel tothe kernel that captures the dump, known as the second or fadump kernel.The elfcorehdr needs to be updated if the system's memory changes due tomemory hotplug or online/offline events.Currently, memory hotplug events are monitored in userspace by udevrules, and fadump is re-registered, which recreates the elfcorehdr withthe latest available memory in the system.However, the previous patch ("powerpc: make fadump resilient with memoryadd/remove events") moved the creation of elfcorehdr to the second orfadump kernel. This eliminates the need to regenerate the elfcorehdrduring memory hotplug or online/offline events.Create a sysfs entry at /sys/kernel/fadump/hotplug_ready to letuserspace know that fadump re-registration is not required for memoryadd/remove events.Signed-off-by: Sourabh Jain Signed-off-by: Michael Ellerman Link: https://msgid.link/20240422195932.1583833-3-sourabhjain@linux.ibm.com List of files: /linux-6.15/Documentation/ABI/testing/sysfs-kernel-fadump

d8e73458 - powerpc/fadump: sysfs for fadump memory reservation

Wed, 11 Dec 2019 16:09:10 +0000

powerpc/fadump: sysfs for fadump memory reservationAdd a sys interface to allow querying the memory reserved by FADump forsaving the crash dump.Also added Documentation/ABI for the new sysfs file.Signed-off-by: Sourabh Jain Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20191211160910.21656-7-sourabhjain@linux.ibm.com List of files: /linux-6.15/Documentation/ABI/testing/sysfs-kernel-fadump

d418b19f - powerpc/fadump: Reorganize /sys/kernel/fadump_* sysfs files

Wed, 11 Dec 2019 16:09:07 +0000

powerpc/fadump: Reorganize /sys/kernel/fadump_* sysfs filesAs the number of FADump sysfs files increases it is hard to manage allof them inside /sys/kernel directory. It's better to have all theFADump related sysfs files in a dedicated directory/sys/kernel/fadump. But in order to maintain backward compatibility asymlink has been added for every sysfs that has moved to new location.As the FADump sysfs files are now part of a dedicated directory thereis no need to prefix their name with fadump_, hence sysfs file namesare also updated. For example fadump_enabled sysfs file is nowreferred as enabled.Also consolidate ABI documentation for all the FADump sysfs files in asingle file Documentation/ABI/testing/sysfs-kernel-fadump.Signed-off-by: Sourabh Jain Tested-by: Michal Suchanek Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20191211160910.21656-4-sourabhjain@linux.ibm.com List of files: /linux-6.15/Documentation/ABI/testing/sysfs-kernel-fadump