kernel/sysctl: add panic_print into sysctl
So that we can also runtime chose to print out the needed system info
for panic, other than setting the kernel cmdline.
Link: http://lkml.kernel.org/r/1543398842-19295-3-git-send-email-feng.tang@intel.com
Signed-off-by: Feng Tang <feng.tang@intel.com>
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 7f6c1a3..ba4d9e8 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -807,6 +807,13 @@
.mode = 0644,
.proc_handler = proc_dointvec,
},
+ {
+ .procname = "panic_print",
+ .data = &panic_print,
+ .maxlen = sizeof(unsigned long),
+ .mode = 0644,
+ .proc_handler = proc_doulongvec_minmax,
+ },
#if defined CONFIG_PRINTK
{
.procname = "printk",