diff options
| author | Feng Tang <feng.tang@linux.alibaba.com> | 2025-07-03 10:10:01 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-07-19 19:08:24 -0700 |
| commit | b76e89e50fc3693b7b8a443ed906320d8ccb93fd (patch) | |
| tree | d43d537583cad2a5e31e3cdaf7fb3964ac609eaa /include/linux/sys_info.h | |
| parent | 261743b0135d1d578cab407ba0cf226df30b43d8 (diff) | |
panic: generalize panic_print's function to show sys info
'panic_print' was introduced to help debugging kernel panic by dumping
different kinds of system information like tasks' call stack, memory,
ftrace buffer, etc. Actually this function could also be used to help
debugging other cases like task-hung, soft/hard lockup, etc. where user
may need the snapshot of system info at that time.
Extract system info dump function related code from panic.c to separate
file sys_info.[ch], for wider usage by other kernel parts for debugging.
Also modify the macro names about singulars/plurals.
Link: https://lkml.kernel.org/r/20250703021004.42328-3-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>
Cc: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/sys_info.h')
| -rw-r--r-- | include/linux/sys_info.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/linux/sys_info.h b/include/linux/sys_info.h new file mode 100644 index 000000000000..53b7e27dbf2a --- /dev/null +++ b/include/linux/sys_info.h @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _LINUX_SYS_INFO_H +#define _LINUX_SYS_INFO_H + +/* + * SYS_INFO_PANIC_CONSOLE_REPLAY is for panic case only, as it needs special + * handling which only fits panic case. + */ +#define SYS_INFO_TASKS 0x00000001 +#define SYS_INFO_MEM 0x00000002 +#define SYS_INFO_TIMERS 0x00000004 +#define SYS_INFO_LOCKS 0x00000008 +#define SYS_INFO_FTRACE 0x00000010 +#define SYS_INFO_PANIC_CONSOLE_REPLAY 0x00000020 +#define SYS_INFO_ALL_CPU_BT 0x00000040 +#define SYS_INFO_BLOCKED_TASKS 0x00000080 + +void sys_info(unsigned long si_mask); + +#endif /* _LINUX_SYS_INFO_H */ |