[PATCH v2 0/4] Add support for crashkernel.default

In RHEL, kernel supports a `crashkernel=auto` param and when it's used, kernel will use its built-in default value as the crashkernel value. But upstream doesn't like this idea. [1] `crashkernel=auto` was introduced to provide user a default value, and make it possible to update the crashkernel value automatically as kernel package updates if user is using the default `auto` value. After more discussion, `crashkernel=auto` will be dropped. To track the default crashkernel value, kernel package will include a crashkernel.default file with it[2], and kexec-tools can make use of that file, update kernel's boot cmdline accordingly, and help user to reset the crashkernel value to default value. [1]: https://lore.kernel.org/linux-mm/20210507010432.IN24PudKT%25akpm@linux-fo... [2]: https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1171 Update from V1: - Add support for ostree - Add a crashkernel-howto.txt - Change crashkernel.conf to crashkernel.default Kairui Song (4): Revert "kdump-lib.sh: Remove is_atomic" kdumpctl: Add kdumpctl reset-crashkernel Add a new hook: 92-crashkernel.install Add a crashkernel-howto.conf doc 92-crashkernel.install | 131 +++++++++++++++++++++++++++++++++++++++++ crashkernel-howto.conf | 113 +++++++++++++++++++++++++++++++++++ kdump-lib.sh | 5 ++ kdumpctl | 41 ++++++++++++- kdumpctl.8 | 9 +++ kexec-tools.spec | 7 +++ 6 files changed, 304 insertions(+), 2 deletions(-) create mode 100755 92-crashkernel.install create mode 100644 crashkernel-howto.conf -- 2.31.1