Hello Petr,
On 08/08/24 16:54, Petr Tesařík wrote:
Hi Sourabh,
sorry for late reply, was on vacation and then catching up...
On Mon, 5 Aug 2024 10:38:29 +0530
Sourabh Jain <sourabhjain@xxxxxxxxxxxxx> wrote:
Commit 79365026f869 ("crash: add a new kexec flag for hotplug support")
generalizes the crash hotplug support to allow architectures to update
multiple kexec segments on CPU/Memory hotplug and not just elfcorehdr.
Therefore, update the relevant kernel documentation to reflect the same.
No functional change.
Cc: Petr Tesarik <petr@xxxxxxxxxxx>
Cc: Hari Bathini <hbathini@xxxxxxxxxxxxx>
Cc: kexec@xxxxxxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Cc: linuxppc-dev@xxxxxxxxxxxxxxxx
Cc: x86@xxxxxxxxxx
Signed-off-by: Sourabh Jain <sourabhjain@xxxxxxxxxxxxx>
---
Discussion about the documentation update:
https://lore.kernel.org/all/68d0328d-531a-4a2b-ab26-c97fd8a12e8b@xxxxxxxxxxxxx/
---
.../ABI/testing/sysfs-devices-memory | 6 ++--
.../ABI/testing/sysfs-devices-system-cpu | 6 ++--
.../admin-guide/mm/memory-hotplug.rst | 5 ++--
Documentation/core-api/cpu_hotplug.rst | 10 ++++---
kernel/crash_core.c | 29 ++++++++++++-------
5 files changed, 33 insertions(+), 23 deletions(-)
diff --git a/Documentation/ABI/testing/sysfs-devices-memory b/Documentation/ABI/testing/sysfs-devices-memory
index a95e0f17c35a..421acc8e2c6b 100644
--- a/Documentation/ABI/testing/sysfs-devices-memory
+++ b/Documentation/ABI/testing/sysfs-devices-memory
@@ -115,6 +115,6 @@ What: /sys/devices/system/memory/crash_hotplug
Date: Aug 2023
Contact: Linux kernel mailing list <linux-kernel@xxxxxxxxxxxxxxx>
Description:
- (RO) indicates whether or not the kernel directly supports
- modifying the crash elfcorehdr for memory hot un/plug and/or
- on/offline changes.
+ (RO) indicates whether or not the kernel update of kexec
+ segments on memory hot un/plug and/or on/offline events,
+ avoiding the need to reload kdump kernel.
This sentence somehow lacks a verb. My suggestion:
(RO) indicates whether or not the kernel updates relevant kexec
segments on memory hot un/plug and/or on/offline events, avoiding the
need to reload kdump kernel.
Thanks for the review. I will update the document as suggested.
- Sourabh Jain
diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu
index 325873385b71..f4ada1cd2f96 100644
--- a/Documentation/ABI/testing/sysfs-devices-system-cpu
+++ b/Documentation/ABI/testing/sysfs-devices-system-cpu
@@ -703,9 +703,9 @@ What: /sys/devices/system/cpu/crash_hotplug
Date: Aug 2023
Contact: Linux kernel mailing list <linux-kernel@xxxxxxxxxxxxxxx>
Description:
- (RO) indicates whether or not the kernel directly supports
- modifying the crash elfcorehdr for CPU hot un/plug and/or
- on/offline changes.
+ (RO) indicates whether or not the kernel update of kexec
+ segments on CPU hot un/plug and/or on/offline events,
+ avoiding the need to reload kdump kernel.
Same as above.
Otherwise LGTM.
Petr T
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