+ panic-add-panic_sys_info=-setup-option-for-kernel-cmdline.patch added to mm-nonmm-unstable branch

+ panic-add-panic_sys_info=-setup-option-for-kernel-cmdline.patch added to mm-nonmm-unstable branch

[Andrew Morton]

The patch titled
     Subject: panic: add 'panic_sys_info=' setup option for kernel cmdline
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     panic-add-panic_sys_info=-setup-option-for-kernel-cmdline.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/panic-add-panic_sys_info=-setup-option-for-kernel-cmdline.patch

This patch will later appear in the mm-nonmm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Feng Tang <feng.tang@linux.alibaba.com>
Subject: panic: add 'panic_sys_info=' setup option for kernel cmdline
Date: Thu, 3 Jul 2025 10:10:03 +0800

'panic_sys_info=' sysctl interface is already added for runtime setting. 
Add counterpart kernel cmdline option for boottime setting.

Link: https://lkml.kernel.org/r/20250703021004.42328-5-feng.tang@linux.alibaba.com
Signed-off-by: Feng Tang <feng.tang@linux.alibaba.com>
Suggested-by: Petr Mladek <pmladek@suse.com>
Cc: John Ogness <john.ogness@linutronix.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Lance Yang <lance.yang@linux.dev>
Cc: "Paul E . McKenney" <paulmck@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 Documentation/admin-guide/kernel-parameters.txt |   15 ++++++++++++++
 kernel/panic.c                                  |    9 ++++++++
 2 files changed, 24 insertions(+)

--- a/Documentation/admin-guide/kernel-parameters.txt~panic-add-panic_sys_info=-setup-option-for-kernel-cmdline
+++ a/Documentation/admin-guide/kernel-parameters.txt
@@ -4563,6 +4563,21 @@
 			Use this option carefully, maybe worth to setup a
 			bigger log buffer with "log_buf_len" along with this.
 
+	panic_sys_info= A comma separated list of extra information to be dumped
+                        on panic.
+                        Format: val[,val...]
+                        Where @val can be any of the following:
+
+                        tasks:          print all tasks info
+                        mem:            print system memory info
+			timers:         print timers info
+                        locks:          print locks info if CONFIG_LOCKDEP is on
+                        ftrace:         print ftrace buffer
+                        all_bt:         print all CPUs backtrace (if available in the arch)
+                        blocked_tasks:  print only tasks in uninterruptible (blocked) state
+
+                        This is a human readable alternative to the 'panic_print' option.
+
 	parkbd.port=	[HW] Parallel port number the keyboard adapter is
 			connected to, default is 0.
 			Format: <parport#>
--- a/kernel/panic.c~panic-add-panic_sys_info=-setup-option-for-kernel-cmdline
+++ a/kernel/panic.c
@@ -143,6 +143,15 @@ static __init int kernel_panic_sysctls_i
 late_initcall(kernel_panic_sysctls_init);
 #endif
 
+/* The format is "panic_sys_info=tasks,mem,locks,ftrace,..." */
+static int __init setup_panic_sys_info(char *buf)
+{
+	/* There is no risk of race in kernel boot phase */
+	panic_print = sys_info_parse_param(buf);
+	return 1;
+}
+__setup("panic_sys_info=", setup_panic_sys_info);
+
 static atomic_t warn_count = ATOMIC_INIT(0);
 
 #ifdef CONFIG_SYSFS
_

Patches currently in -mm which might be from feng.tang@linux.alibaba.com are

panic-clean-up-code-for-console-replay.patch
panic-generalize-panic_prints-function-to-show-sys-info.patch
panic-add-panic_sys_info-sysctl-to-take-human-readable-string-parameter.patch
panic-add-panic_sys_info=-setup-option-for-kernel-cmdline.patch
panic-add-note-that-panic_print-sysctl-interface-is-deprecated.patch