sysrq: use show_stack_loglvl()

Show the stack trace on a CPU with the same log level as "CPU%d" header.

Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.com>
Link: http://lkml.kernel.org/r/20200418201944.482088-45-dima@arista.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c
index 477cdc1..7bd9353 100644 (file)
--- a/drivers/tty/sysrq.c
+++ b/drivers/tty/sysrq.c
@@ -235,7 +235,7 @@ static void showacpu(void *dummy)
 
        raw_spin_lock_irqsave(&show_lock, flags);
        pr_info("CPU%d:\n", smp_processor_id());
-       show_stack(NULL, NULL);
+       show_stack_loglvl(NULL, NULL, KERN_INFO);
        raw_spin_unlock_irqrestore(&show_lock, flags);
 }
 

diff --git a/include/linux/sched/debug.h b/include/linux/sched/debug.h
index 95fb9e0..373e4e3 100644 (file)
--- a/include/linux/sched/debug.h
+++ b/include/linux/sched/debug.h
@@ -31,6 +31,8 @@ extern void show_regs(struct pt_regs *);
  * trace (or NULL if the entire call-chain of the task should be shown).
  */
 extern void show_stack(struct task_struct *task, unsigned long *sp);
+extern void show_stack_loglvl(struct task_struct *task, unsigned long *sp,
+                             const char *loglvl);
 
 extern void sched_show_task(struct task_struct *p);